operating manual capacitive high and low level sensors ... · rope sensor 1m 16m rod sensor 0.5m 4m...

Agromatic AG, Goldingerstr. 30, 8637 Laupen, Switzerland, Tel:+41(0)552562100, www.agromatic.com page 1 of 28

Operating Manual

Capacitive High and Low Level Sensors

24VDC / 230VAC

ACC2

ACC3

ACC4

Agromatic AG

Goldingerstrasse 30

CH-8637 Laupen

Phone: +41 (0) 55 256 21 00

Fax: +41 (0) 55 256 21 11

E-Mail: [email protected]

www.agromatic.com

mailto:[email protected]


Table of contents

1. Safety ............................................................................................................ 4

2. Overview ....................................................................................................... 5

2.1. System overview capacitive high / low level sensors ........................................ 5

2.2. Overview high / low level sensors 24VDC / 230VAC ............................................... 5

3. Installation and commissioning ................................................................. 6

3.1. Mechanical installation rod / rope sensor ........................................................... 6 3.1.1. Preparation of the sensor for installation ............................................................................. 6

3.1.1.1. Mounting with zone separation .................................................................................... 7

3.2. Mechanical installation of plate sensor ............................................................... 8 3.2.1. Mechanical installation .......................................................................................................... 8

3.2.1.1. Outside installation ....................................................................................................... 8 3.2.1.2. Inside installation .......................................................................................................... 8 3.2.1.3. Preparation (outside and inside installation) ............................................................... 8 3.2.1.4. Installation of the sensor .............................................................................................. 9

3.3. Electrical installation ........................................................................................... 10

3.4. Commissioning .................................................................................................... 11 3.4.1. First switching-on ................................................................................................................ 11 3.4.2. Adjustment ........................................................................................................................... 11

3.4.2.1. Empty adjustment / Empty Border ............................................................................. 12 3.4.2.2. Full adjustment / Full Border ...................................................................................... 13 3.4.2.3. Delete adjustment ....................................................................................................... 14

4. Functionality .............................................................................................. 15

4.1. General ................................................................................................................. 15 4.1.1. User-interface on the module ............................................................................................. 15 4.1.2. Windows program ACC116 Com-Interface ....................................................................... 15 4.1.3. Remote adjustment via sensor output ............................................................................... 15

4.2. Measurement mode ............................................................................................. 16

4.3. Setup mode .......................................................................................................... 17

4.4. Error operation .................................................................................................... 18

5. Operation .................................................................................................... 19

5.1. Functions of the buttons and LED’s .................................................................. 19

5.2. Measurement mode ............................................................................................. 19 5.2.1. Operating modes ................................................................................................................. 19

5.2.1.1. Measurement mode without adjustment ................................................................... 19 5.2.2. Adjustment ........................................................................................................................... 20

5.2.2.1. Measuring mode with one-sided adjustment ............................................................ 20 5.2.2.2. Measuring mode with two-sided adjustment ............................................................. 20

5.3. Setup mode .......................................................................................................... 20 5.3.1. Setup mode 1: Adjustment ................................................................................................. 20 5.3.2. Setup mode 2: Output switching delay .............................................................................. 20 5.3.3. Setup Level 3: Sensitivity.................................................................................................... 21 5.3.4. Setup mode 4: Select output level ..................................................................................... 21 5.3.5. Setup mode 5: Advanced setup ......................................................................................... 21

5.4. Error mode ........................................................................................................... 22 5.4.1. Display of error messages .................................................................................................. 22


5.4.2. Error message «internal error» .......................................................................................... 22 5.4.3. Error message «user error» ............................................................................................... 22 5.4.4. Error message «shortcut» .................................................................................................. 22 5.4.5. Acknowledging an error ...................................................................................................... 23

5.5. Maintenance ......................................................................................................... 23 5.5.1. General ................................................................................................................................ 23 5.5.2. Cleaning ............................................................................................................................... 23 5.5.3. Re-adjustment ..................................................................................................................... 23

6. Troubleshooting – Error messages ......................................................... 24

7. Label ........................................................................................................... 24

8. Variants, accessories and spare parts .................................................... 25

9. Copyrights / Disclaimers ........................................................................... 26

10. Declaration of conformity ......................................................................... 26

11. Revision history ......................................................................................... 26

Technical data ACC2/ACC3/ACC4 ............................................................ 27

Safety


1. Safety

General safety instructions

Please read this manual carefully before use. This device was developed

and manufactured at the factory for its intended purpose. A misuse may re-

sult in destruction or malfunction. For any resulting damage to people, prop-

erty and the device Agromatic rejects any liability or warranty claim. Strong

electromagnetic emissions (such as unshielded frequency converter leads)

may temporarily affect the operation of the device. Protect the device

against moisture, vibrations, extreme temperature effects, dirt and impact.

When using peripheral device and accessory parts, only use types sug-

gested by Agromatic. The device must not be used or stored in rooms

where pesticides / gases are used. The device may only be installed and

maintained by trained professionals. During installation, the country-specific

regulations must be observed.

Safety instructions for the use of the device in the Ex area

These operating instructions apply both to types of this device which may be

used in potentially explosive areas and to types which do not have Ex ap-

proval. In order to assess whether the device in question is a type with Ex

approval, the label must be considered. Ex-relevant information is marked in

the operating instructions with the Ex symbol.

Devices without Ex approval on the label must not be used in Ex areas!

Devices with Ex approval on the label may only be operated in the zones

declared in the Ex marking.

The requirements of EN 60079-31, in particular with regard to dust deposits

and temperatures, must be observed.

Safety instructions for installation

Incorrectly installed components can cause serious damage to conveyors or

other equipment and persons in silo facilities. During installation or mainte-

nance, only accessories approved by Agromatic may be used. The installa-

tion instructions are to be followed strictly. The device may only be opened

when it is switched off.

Safety instructions for connection to the power supply

The present device is a device according to protection class I / protective

conductor. The sensor must be connected to a circuit during installation,

which is protected by a suitable RCCB. The protective conductor connection

of the sensor must be connected to the protective conductor of the power

supply. The country-specific regulations must be observed.

Overview


2. Overview 2.1. System overview capacitive high / low level sensors

2.2. Overview high / low level sensors 24VDC / 230VAC

Installation and commissioning


3. Installation and commissioning

Attention: The mounting of a sensor in the Ex area must only be carried

out according to the country-specific explosion protection regulations.

The installation may only be carried out by trained specialist personnel.

The country-specific explosion protection regulations must be observed.

3.1. Mechanical installation rod / rope sensor 3.1.1. Preparation of the sensor for installation The capacitive high and low level sensors are delivered as

standard in two parts:

I.) Sensor head (complete sensor without rope/rod)

II.) Rope or rod

The two parts must be connected to each other. To secure the

rod / rope, some Loctite 262 must be applied to the connection

thread. Otherwise, it is possible that the rope / the rod will un-

screw from the thread due to the product in the silo.

If extensions or surface enlargements are used with a rod

probe, the connections must also be secured with Loctite 262.

A torque of 28-32 Nm should be applied when screwing together

sensor head and cable / rod or rod extensions.

The length of the probe can be selected according to the function of the sensor (high/low level

sensor) and system-specific parameters (e.g. rest amount of elevator after switch off). It must be

expected that the sensor will change state as soon as the overflow at the sensor end is 0-50cm,

depending on the material.

The sensor lengths are limited to the following parameters:

sensor type minimum length maximum length

rope sensor 1m 16m

rod sensor 0.5m 4m

When installing, make sure that the probe is sufficiently far away from the

silo wall or other permanently installed objects in the silo:

sensor type length minimum distance

rope sensor 1m-3m 0.8m

>3m-8m 1.5m

>8m-16m 2.5m

rod sensor 0.5m-1m 0.3m

>1m-2.5m 0.5m

>2.5m-4m 0.8m



3.1.1.1. Mounting with zone separation

For installation directly through the silo roof, a 11/2 " gas thread is availa-

ble as process connection. In this case, the sensor must be approved as

Type Ex II 1/2D Ex ta/tb IIIC T85°C Da/Db

In this type of mounting, the sensor head is operated in zone 21 at most,

but the cable or rod protrudes into zone 20.

In this type of mounting, the 11/2 " process connection and the overlying seal in contact with the mounting flange form the zone separation. The following points must be observed to ensure explosion protection:

The tightness between silo and flange plate is the sole responsibility of the operator.

It is mandatory to use the prescribed gasket to 11/2 " gas thread / ATEX to

ensure zone separation.

The sensor must be earthed via the equipotential bonding conductor. This has to be done at the earthing point.

If a roof duct has to be realized, the shrink tubing intended for this purpose can optionally be used. The sensor must then be installed in such a way that process-related electrostatic charges on the shrink tubing, e.g. due to pass-ing media, are excluded. When the shrink tube is attached to the rod or rope, make sure that it is not in contact with the product.



3.2. Mechanical installation of plate sensor 3.2.1. Mechanical installation The sensor probe can be mounted in the silo in two different ways:

either outside or inside.

3.2.1.1. Outside installation

This type of installation is easier because no access to the interior of

the silo is required for assembly. The sensor is screwed to the outside

of the silo wall.

3.2.1.2. Inside installation

Agromatic recommends installation inside the silo, as this prevents the ac-

cumulation of disturbing material in the area of the sensor head. However,

access to the cell is required in order to mount the sensor on the inside.

3.2.1.3. Preparation (outside and inside installation)

The recesses in the silo wall are the same regardless of whether the

plate probe is mounted on the inside or the outside. The recess in the

center must be 165-175mm. For mounting, eight holes for M8 screws are

drilled outside the recess in a radius of 205mm (9mm hole diameter).

With this type of installation, it is important to

note that the wall thickness of the silo should

not exceed 6mm. Otherwise, material accu-

mulations may form which impair the function

of the sensor.



3.2.1.4. Installation of the sensor

When mounting the sensor, the marked points must especially be observed:

Outside installation Inside installation

In this type of mounting, the overlap between sensor and silo wall forms the zone separation. The following points must be observed to ensure explosion protection:

The tightness between silo and sensor plate is the sole responsibility of the operator.

The prescribed o-ring gasket (part of scope of delivery) must be used to en-sure zone separation.

The sensor must be earthed via the equipotential bonding conductor. The grounding has to be realized on one of the mounting holes of the sensor plate.

No screws should protrude from the inside of the silo, or the excess height should be reduced to a minimum. Otherwise, accumulations of material can form which impair the function of the sensor.



3.3. Electrical installation After mounting the sensor, the wiring of the sensor has to be done. The shield of the connection

cable must be connected to the earth point in the housing of the sensor. This is used as a protec-

tive conductor. The equipotential bonding conductor must be connected to the earth connection

outside the housing.

The electrical connection is made via six-pole terminal in accordance with the information below:

The sensor signal is evaluated via contacts C, NO, NC. These contacts are the taps of the output

relay on the sensor. In the default setting, the contact C is closed to NO when the sensor indicates

empty (relay is energized in this case, fail save). Thus, as soon as the current to the sensor is in-

terrupted, a full signal is applied on the output of the sensor.

Depending on whether the sensor is operated with 230VAC or 24VDC, the volt-

age selector switch on the basic PCB must be set to the respective position.

Otherwise, the sensor will be destroyed after switching on the power supply!

The power supply of the sensor must be equipped with a fuse which is speci-

fied with at least 10kA separation current.

The potential-free switching contacts have a maximum switching capacity of

10A. If the evaluation system is far away from the sensor (wiring to the control

system in the other building / part of the building), the bridge between L1 and

C must be removed. As a result, the voltage supply of the sensor and the

evaluation / control system are galvanically isolated at the sensor.

Please note that these cables must not be laid in parallel with power cables

(high voltage / high current) or with cables which operate converter-controlled

machines or motors.

(minimum distance: 20 cm)

clamp 24VDC operation 230VAC operation

earth / equipotential bonding

N GND neutral conductor

L1 +24VDC phase / 230VAC

C switching output common contact

NO switching output normally open

NC switching output normally closed



3.4. Commissioning

The switch position (24VDC or 230VAC) must necessarily be checked before

switching on for the first time.

3.4.1. First switching-on

Each time the sensor is started, the sensor performs a «light test».

As soon as the voltage is switched on, each LED lights up first in red,

then briefly in green.

If the sensor is switched on for the first time after delivery from the

factory, only one LED lights up after the «light test». The color of this

LED indicates the switching state. Green is «empty», red is «full».

The sensor is already functional, but not yet adjusted to the environ-

ment. For more information on operation without adjustment, see

chapter 5.2.1.1 Measurement mode without adjustment.

Please note that operation without adjustment in most applications does not

make sense. The sensor should always be adjusted to the ambient condi-

tions. To do this, perform one of the adjustment methods in the chapter

3.4.2 Adjustment.

3.4.2. Adjustment Sensors with a capacitive measuring principle must be set to the ambient conditions so that they

function correctly. With an adjustment, the sensor is given a condition such as «full» or «empty»

for a specific capacity value.

Differentiation of the operating modes

The sensor basically has three operating modes: one-sided adjustment,

two-sided adjustment, without adjustment.

Standard is always the one-sided adjustment.

The three operating modes are described in the chapter 5.2.1 Operating

modes.

The adjustment method should be selected depending on the location of

the sensor:

If the sensor is used as high level sensor, it should be optimally calibrated

in an empty state, i.e. an empty adjustment should be performed.

If the sensor is used as low level sensor, it should optimally be calibrated

in the full state, i.e. a full adjustment should be performed.



3.4.2.1. Empty adjustment / Empty Border

An empty adjustment can always be made when the sensor is free of material. If the sensor is op-

erated as high level sensor (sensor is mounted at the top of the silo and controls the shutdown of

the feeding device), this is the standard adjustment variant. After the empty adjustment is made

for a sensor, the LED «Empty Border» lights up orange.

Switch to «Setup mode: Adjustment»

Before calibration: Sensor is in «Measurement mode». The

LED «Mode» does not flash, at least one LED lights up and

indicates the current status «full/empty». The LEDs «Empty

Border» and «Full Border» light up, depending on whether

these barriers have already been adjusted once.

Press «Mode» button.

The sensor changes from «Measurement mode» to «Setup

mode». This is visualized by the LED «Mode» flashing once

every three seconds.

Adjust empty-border

Pressing the «- or Empty»-button triggers an empty adjust-

ment.

The sensor confirms a successful empty adjustment by flash-

ing twice the LED «D5/Empty Border».

The sensor will leave setup mode and switch in normal oper-

ation automatically.



3.4.2.2. Full adjustment / Full Border

A full adjustment can be made when the sensor is covered with material. If the sensor is operated

as low level sensor (sensor is mounted in the silo outlet and reports when the cell is empty), this is

the standard adjustment variant. After the full adjustment is made on a sensor, the LED «Full Bor-

der» lights up orange.

Switch to «Setup mode: Adjustment»



indicates the current status «full/empty». The LEDs «Empty







Adjust full-border

Pressing the «+ or Full» button triggers a full adjustment.

The sensor confirms a successful full adjustment by flashing

twice the LED «D0 / Full Border».





3.4.2.3. Delete adjustment

If the sensor has already been adjusted (LED Full-Border, Empty Border or both active), it makes

sense to delete the previous adjustment values for a new adjustment. If the sensor is used in a

new location, changes are made to the installation (especially at grounding) or wrong settings

have been made, it is absolutely necessary to delete the previous adjustment values.

Switch to «Setup mode: adjustment»



indicates the current status «full / empty». The LEDs «Empty







Delete border

Pressing the «- or Empty» and «+ or Full» buttons simultane-

ously deletes both barriers. The sensor is then unadjusted. In

order to readjust the sensor, the setup menu must be quit and

reopened.



Functionality


4. Functionality 4.1. General The function of the sensor is controlled via settings on the ACC116 module. Settings on the sen-

sor module can be made via the following interfaces:

4.1.1. User-interface on the module

Using three buttons, the important settings for op-

eration can be made directly on the ACC116 mod-

ule, without the need for further tools. The settings

are visualized on the eight two-color LEDs.

The functions of the keys and LEDs are printed on

the label of the sensor module. The functions are

described individually beginning from chapter

4.2 Measurement mode.

4.1.2. Windows program ACC116 Com-Interface

A cable can be connected via the 10-pole plug on

the ACC116 module to connect the module to a

PC. The program ACC116 Com-Interface must be

installed on the PC for this purpose. On the one

hand, settings of the sensor can be read out via

this program, or the settings of the sensor can be

redefined directly. It is also possible to log sensor

data and events with the program. The program is

particularly useful for service technicians who often

work with the sensor.

4.1.3. Remote adjustment via sensor output The switching output of the ACC2/3/4 types has a potential separation. Therefore, no remote ad-

justment can be performed on this type.

plug

Functionality


The sensor basically has two operating modes: measurement mode or setup mode.

4.2. Measurement mode When the sensor is in measurement mode, all

LEDs are in static state (not flashing). In this opera

ting mode, the upper part of the labels on the sen-

sor module applies. The «Empty Border» LED in-

dicates whether an empty adjustment of the sen-

sor has been made, and the «Full Border» LED in-

dicates whether a full adjustment has been made.

The third active LED indicates the level: red is full,

green is empty

➔ See chapter 5.1 Functions of the buttons

and LED’s

If the LED mode does not flash

red, the sensor is in measurement

mode.

This is the default mode. In this

operating mode, the sensor

measures the level of the silo and

switches the output according to

the parameterized settings.

LED static state

(normal state)

blinking state red/green (de-

layed output switch)

Mode red: level is higher than full-

border

level is higher than full border, output

switching delay is running.

D0 red: full border has been ad-

justed

D1 red: level is full, triggered by

the ramp detection

green: level is empty, trig-

gered by the ramp detection

Output change detected, output

switching delay is running.

D2

D3

D4

D5 red: empty border has been

adjusted

D6 green: level is lower than the

empty border

Level is lower than empty border, out-

put switching delay is running.

Empty border adjusted when LED orange

Full border adjusted when LED orange

level indicator

Functionality


4.3. Setup mode

When the sensor is in setup mode, the LED

«Mode» flashes red. In this case, the lower part of

the label applies. The LED «Mode» indicates which

setup mode the sensor is in, and the LEDs D0-D6

light statically green to show the parameters of the

mode.

➔ See chapter 5.3 Setup mode

In setup mode, the sensor settings can be configured. The individual functions are described in

more detail in chapter 5 Operation under 5.3 Setup mode. The following table gives an overview

of the settings in the setup menu:

LED Setup Level 1:

Adjustment

Setup Level 2:

Output switching

delay

Setup Level 3:

Sensitivity

Setup Level 4:

high / low level

sensor

Setup Level 5:

Advanced Setup

Mode flashes 1x/ level flashes 2x flashes 3x flashes 4x flashes 5x

D0 level full no output delay D0= lowest sensiti-

vity (default)

D0+D1 = medium

sensitivity

D0+D1+D2: high

sensitivity

D0+D1+D2+D3:

highest sensitivity

green steady: high level

sensor

firmware version

number

D1 red steady: full

border is set.

red flashing 2x:

confirmation of

successful full ad-

justment

1 second

D2 level 5 seconds

D3 level 10 seconds

D4 level 30 seconds

D5 red steady: full

border is set.

red flashing 2x:

confirmation of

successful empty-

adjustment

1 minute

D6 level empty 2 minutes green steady: low level

sensor

Functionality


4.4. Error operation

In the event of an error, the sensor changes to

a third operating mode: In this mode, the LED

«Mode» and the LED «D6» flash alternately in

red. The LEDs «D0-D5» indicate the error that

has occurred.

➔ See chapter 5.4 Error mode

If an error occurs at the sensor, the sensor changes to error mode. The sensor indicates the fault

by alternating flashing of «D0/D6». With the LEDs «D1-D5» the error message is displayed. The

following table shows the different errors:

LED Steady state «Mode» red/off, «D6» off/red

Mode Error display alternating with «D6»

D0 Internal Error

D1 User Error

D2 Shortcut

D3

D4

D5

D6 Error display alternating with LED «mode»

LED’s flashing alternately

Operation


5. Operation 5.1. Functions of the buttons and LED’s «Mode» button: Use this button to set the

sensor to setup mode or to switch through

the individual menus in the setup.

If «Mode» is pressed in the last configura-

tion menu, the sensor returns to normal

measuring mode.

«+ / Full» button: With this button, param-

eters can be increased or a full adjustment

can be performed.

«- / Empty» button: With this button, pa-

rameters can be reduced or an empty ad-

justment can be performed.

5.2. Measurement mode 5.2.1. Operating modes In measurement mode, the sensor has three different operating modes: measurement mode with-

out adjustment, measurement mode with one-sided adjustment and measurement mode with two-

sided adjustment

5.2.1.1. Measurement mode without adjustment

If the sensor is operated without adjustment, only one LED on the

ACC116 module lights up. The color of the LED visualizes the

level, where green means empty and red full. The position of the

LED varies depending on the measured capacity. For safe opera-

tion, the sensor needs sufficient measurement reserve. This is en-

sured when the level is in the range of the LEDs «D1 to D4». If the

level is in the range «D5/6» or «Mode» / «D0», the sensor cannot

operate in this operating mode.

In this measurement mode, the sensor measures the change in ca-

pacity and evaluates the so-called «ramps».

We would like to point out that operation without calibration is not useful in

most applications. The sensor should always be adjusted to the ambient

conditions. For this purpose, perform one of the adjustment methods of

chapter 3.4.2 Adjustment.

Exception: The operation mode without adjustment allows the use in

strongly changing environments. If, for example, the humidity of the product

varies extremely, or very large product differences occur, such as in wheat

bran and oats, this operating mode may offer advantages.

Operation


5.2.2. Adjustment Sensors with a capacitive measuring principle must be set to the ambient conditions so that they

function correctly. With an adjustment, the sensor is given a condition such as «full» or «empty»

for a specific capacity value.

The adjustment procedure is explained in detail in the chapter

3.4.2 Adjustment.

5.2.2.1. Measuring mode with one-sided adjustment

If a full / empty barrier has been read in at the sensor (but not both), the sensor is considered ad-

justed. The software of the sensor automatically calculates the switching points to detect the filling

level as optimally as possible.

This operating mode should normally be used. In this setting, the sensor

is the least dependent on variable parameters such as product, humidity,

etc.

High level sensors should be adjusted by default in an empty silo.

(Empty-adjustment, free of material)

Low level sensors should be adjusted by default in a full silo.

(Full-adjustment, covered with material)

5.2.2.2. Measuring mode with two-sided adjustment

This operating mode should only be selected if the operation with one-

sided adjustment does not work well in practice. It should be noted that

for this mode of operation the product should be as constant as possible

and no extreme temperature changes should occur. In this operating

mode, the sensor is very sensitive.

5.3. Setup mode 5.3.1. Setup mode 1: Adjustment If the sensor is in setup mode 1, the LED «Mode» flashes once. In this mode, the sensor can be

adjusted (set full / empty limits). The adjustment is described in chapter 3.4.2 Adjustment.

5.3.2. Setup mode 2: Output switching delay If the sensor is in setup mode 2, the LED «Mode» flashes twice. The set delay time is displayed

with the LEDs D0-D6. There are seven different delay times, from 0 seconds (no delay) to two

minutes. The selectable switching delays are listed in the table below.

By default, the sensor is set to 0 seconds switching delay when delivered. For most applications,

this is also the setting that should be used.

Operation


Selectable output switching delays

If LED «Dx» lights green delay remarks

D0 no delay default-setting

D1 1 second

D2 5 second

D3 10 second

D4 30 second

D5 1 minute

D6 2 minutes

5.3.3. Setup Level 3: Sensitivity If the sensor is in setup mode 3, the LED «Mode» flashes 3 times. The LEDs «D0-D3» show the

set sensitivity. Four different sensitivity levels can be selected.

LED’s sensitivity remarks

D0 low sensitivity default-setting

D1 medium sensitivity

D2 high sensitivity

D3 highest sensitivity

Remark: LED «D4-D6» are always off in this mode.

The sensor automatically adjusts the sensitivity when adjusting the

full/empty border. High sensitivities are selected by the sensor only when

a blank and a full barrier are set. In this case, the sensor becomes very

sensitive and must be readjusted in the event of changes in environmen-

tal conditions (such as changing the product). Sensitivity should only be

increased for products with a very low permittivity value. Normally you

should work with the sensitivity automatically determined by the sensor.

5.3.4. Setup mode 4: Select output level If the sensor is in setup level 4, the LED «Mode» flashes 4 times. LED «D0» and LED «D6» indi-

cate whether the sensor works as high / low level sensor.

If LED Dx lights green output remarks

D0 high level sensor default-setting

D1-D5 (not active in this function)

D6 low level sensor

5.3.5. Setup mode 5: Advanced setup If the sensor is in setup level 5, the LED «Mode» flashes 5 times. LED «D0-D6» indicate the

firmware version.

In Advanced setup, extended functions for diagnostics are available. These functions are only

used by Agromatic.

Operation


5.4. Error mode 5.4.1. Display of error messages If an error has occurred that the sensor cannot solve by itself, the sensor switches to error mode.

The error mode is indicated by flashing the LED «Mode» and the LED «D6» (the two outermost

LEDs).

5.4.2. Error message «internal error»

If an unexpected error occurs in the sensor, the sensor

switches to error mode and indicates an internal error with LED

«D0» (Internal Error). As long as this error is active, the sensor

output changes its state every 3 seconds, so that the error can

be detected at the connected evaluation. Typically, this is a

hardware defect.

5.4.3. Error message «user error»

If the technician makes an error while setting the sensor, which

triggers an inadmissible operating state in the sensor, the sen-

sor switches to error mode and indicates an operator error with

LED «D1» (user error). As long as this error is active, the sen-

sor output changes its state every 3 seconds, so that the error

can be detected at the connected evaluation. Typically, the er-

ror will occur if the barriers are misconfigured (if an empty ad-

justment is performed on an overflow sensor and then full ad-

justment is performed if the sensor is free of material).

5.4.4. Error message «shortcut»

If the output of the sensor is short-circuited, the sensor detects

this after a short time. The sensor then switches to error mode

and displays the error message «shortcut» with LED «D2». In

this operating mode, the sensor changes to the state «high im-

pedance» to avoid damage. The sensor output no longer sup-

plies power in this case. The sensor remains in this state until

the power is interrupted. In this operating mode, the sensor out-

put changes to the state «high impedance» in order to avoid

damage.

Operation


5.4.5. Acknowledging an error

The error mode can only be left by restarting the sensor. To restart the sen-

sor, press the «- or Empty» button and the «+ or Full» button simultaneously

while the sensor is in error mode. The sensor then performs a reset.

5.5. Maintenance 5.5.1. General The sensor basically requires no maintenance. However, the sensor should be cleaned from dust

cyclically in case of heavy dust accumulations.

5.5.2. Cleaning If dust or dirt has formed or even encrusted between the measuring electrode and the silo, it

should be removed.

After the sensor has been cleaned from dust or dirt, it should be readjusted.

5.5.3. Re-adjustment If the environmental conditions of the sensor change considerably (eg use of the sensor in another

silo, change of the product with a significantly different permittivity value, etc.), it may be neces-

sary to readjust the sensor. Proceed as described in chapter 3.4.2 Adjustment.

Make sure that after adjustment, neither the lower nor the upper boundary has an old adjustment

value. It is recommended to delete the old values of full adjustment and empty adjustment first.

Troubleshooting – Error messages


6. Troubleshooting – Error messages

Error message Action to perform

No LED lights up on the sensor 1) Check power supply: The supply voltage has to be

within 10-30VDC.

2) Check wiring: See chapter 3 Installation and com-

missioning section 3.3 Electrical installation.

3) Sensor is defective. Send sensor to Agromatic.

LED left and right blinks alter-

nately red. Additional, LED D0

lights green.

The sensor has detected an internal error during the

self-test. Send sensor to Agromatic.



lights green.

During adjustment, incorrect values were set. Switch off

the sensor and switch it on again. After that, perform

the adjustment procedure correctly.



lights green.

There was a short-circuit at the sensor output. The sen-

sor has switched the output to high impedance for

safety reasons. The wiring should be checked. Then

switch off the sensor and switch it on again.

Sensor output changes status


The sensor signals an error to the control system. Un-

screw sensor and read off the displayed error.

7. Label

ACC2 Rope sensor ATEX

(Art. 3010058)

ACC2 Rope sensor zone-free

(Art. 3010059)

ACC3 Rod sensor ATEX

(Art. 3010060)

ACC3 Rod sensor zone-free

(Art. 3010061)

ACC4 Plate sensor ATEX

(Art. 3010062)

ACC4 Plate sensor zone-free

(Art. 3010063)

Variants, accessories and spare parts


8. Variants, accessories and spare parts Variants

Article number Description

3010058 Capacitive Rope Probe ACC2 24VDC / 230VAC ATEX

3010059 Capacitive Rope Probe ACC2 24VDC / 230VAC

3010060 Capacitive Rod Probe ACC3 24VDC / 230VAC ATEX

3010061 Capacitive Rod Probe ACC3 24VDC / 230VAC

3010062 Capacitive Plate Probe ACC4 24VDC / 230VAC ATEX

3010063 Capacitive Plate Probe ACC4 24VDC / 230VAC

Accessories


Mechanical accessories

0003172 Rope extension ACC x meter ATEX with weight

0003201 Extension for Rod Probe ACC 1m

0003203 Area extension for Rod Probe ACC in V2A

0003227 Gasket for 1½ “ gas thread / ATEX

0003223 Locknut 1 ½ “

3080005 Mounting bracket set for ACC-Sensors

Electronic accessories

0440011 ACC-ComInterface – PC program

3080028 Agro STM32 Programming Interface

Electrical installation accessories (for sensors without combination with temperature meas-

urement)

0240112 Control cable 5x0.75 with copper braid shield

Spare parts


3010041 Electronic module for capacitive sensor ACC116 / ATEX

3010045 Sensor head ACC2 / 3 24VDC / 230VAC ATEX

3010046 Sensor head ACC2 / 3 24VDC / 230VAC

Copyrights / Disclaimers


9. Copyrights / Disclaimers Agromatic products and services, including images, text and software downloads ("Content"), are

owned either by Agromatic AG or by third parties who have given Agromatic the permission to use

its content. Agromatic cannot give you permission for content that belongs to third parties. You

may not copy, modify, distribute, display, license, or sell any content except as provided in the End

User License Agreement (EULA) or in the license terms associated with the content or as pro-

vided in the following policies; expressly issued a permit. For more information, contact a lawyer

specializing in copyright law.

10. Declaration of conformity

For ATEX / CE

Subject of the declaration: High / low level sensor 24VDC / 230VAC

Origin Agromatic AG, Goldingerstrasse 30, CH-8637 Laupen

Switzerland

Types ACC2 / ACC3 / ACC4

Agromatic AG declares under its sole responsibility that the product to which the declaration re-

lates complies with the following standard (s) or normative document (s).

According to the provisions of the guidelines:

Low Voltage Directive; LVD 2014/35/EU

Electromagnetic compatibility; EMC 2014/30/EU

Equipment for explosive atmospheres; ATEX 2014/34/EU

Applied standards: DIN EN 61010-1:2011-07

EN 60529:1991 + A1:2000 + A2:2013

EN 60079-0:2012 + A11:2013

EN 60079-11:2012

EN 60079-25:2010 + AC:2013

EN 60079-31:2014

EN 61000-6-2:2005 + AC:2005

EN 61000-6-4:2007 + A1:2011

Agromatic AG,

Goldingerstrasse 30,

CH-8637 Laupen Switzerland

Laupen, 21.06.2019 T. Diener

11. Revision history

Doc-Version: Doc-Name: Created: Autor: 1.3 E_BA_ACC234-cap-highlowlevel24VDC-230VAC_V1-3 4.7.2019 MB/AD

Agromatic AG, Goldingerstr. 30, 8637 Laupen, Switzerland, Tel:+41(0)552562100, www.agromatic.com

Technical data

ACC2/ACC3/ACC4

Article ACC2 Rope probe 24VDC/230VAC ACC3 Rod probe 24VDC/230VAC ACC4 Plate probe 24VDC/230VAC

Article number 3010058 (ATEX)

3010059 (zonefree)

3010060 (ATEX)

3010061 (zonefree)

3010062 ATEX

3010063 (zonefree)

application purpose Level measurement, configurable as high or low level sensor

Functional data

Principle of operation capacitive

Rope / rod length 0.5 – 16m 0.3 – 4m

Sensitivity > permittivity value 2

Overflow height for trig-

gering

0.1m if rope is <=1m

0.5m if rope is <=6m

0.8m if rope is >6m

0.1m if rod is <=1m

0.5m if rod is >1m

Process connection 1½ ̎gas thread 165 – 175mm recess, according to di-

mension

Process pressure 0.8 – 1.1 bar

Detection Adjustable full border, adjustable empty border, autodetection without adjustment (can be disabled)

Features - temperature compensation

- configurable switching delay on output

- configurable sensitivity with auto-adjustment

- output level can be inverted

- shortcut detection

- error monitoring via output toggling

- PC software for service technicians

- log functionality over UART

Agromatic AG, Goldingerstr. 30, 8637 Laupen, Switzerland, Tel:+41(0)552562100, www.agromatic.com

Electrical data

Supply voltage 24VDC / 230VAC

Sensor output Relais, potential free contact NC + NO

Switching current output 2A

Max. power consump-

tion 2VA

Connection data for in-

trinsically safe systems

Ui = xx V

Ci = xx uF

Li = xx nH

Pi = xx VA

Temperature range

Ambient -20°C to +60°C -20°C to +60°C

Process -20°C to +120°C -20°C to +60°C

Storage -20°C to +40°C -20°C to +40°C

Safety relevant data

Protection class Protection class I

IP protection class IP 67

ATEX certification Ex II 1D Ex ta IIIC T85°C Da

Ex II 1/2D Ex ta/tb IIIC T85°C Da/Db

Dimensioning

operating manual capacitive high and low level sensors ... · rope sensor 1m 16m rod sensor 0.5m 4m...

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