wk series - sec of america · foreword wk iv emc(electro-magnetic compatibility) the emc of wk...
TRANSCRIPT
MANUAL NO. 20101E2.6 Published in Jul. 2001 Revised in Aug. 2008
WK SERIES
WK- 142 K 2-WIRE VIBRATION TRANSMITTER
INSTRUCTION MANUAL
SAFETY CONVENTIONS WK
i
For Use in Safety..... Thank you for your using our WK Series Transmitter.
SHINKAWA Sensor Technology applies strict quality control and inspections to ensure the high reliability of
its products.
The WK Series Transmitter Instruction Manual contains descriptive information , specifications, principle of
operation, installation procedures and field wiring.
Please study contents of this manual and related manuals thoroughly before installing or operating the
equipment, and keep it handy for future reference.
! CAUTION 1. If insulation resistance (Megger) test is made on the signal cable between transmitter and
other equipment, disconnect the cable from transmitter and other equipment.
Be sure to discharge the charged electric load before connecting the cable to the transmitter.
If this caution is not adhered to, the transmitter and other equipment could be damaged.
2. The connector connecting the sensor cable and the extension cable shall be insulated with
the attached insulation sleeve (transparent shrink tube) or fluoro resin insulation tape.
The vinyl-insulating tape shall not be used, which may cause the wiring trouble in the case of
the temperature more than 80°C.
3. Do not measure insulation resistance and withstand voltage other than those at places
specified.
If measured, transmitter damage may result.
4. Before collecting data to check output characteristics, set gap, etc., warm up the transmitter
for more than 5 minutes to stabilize the output after the power is turned on.
5. Do not remodel this unit without permission. Otherwise the guarantee can not be made.
6. This unit is designed for use by specialists or persons thoroughly familiar with the field.
7. Make sure that the end user receives the Instruction Manual delivered with this unit.
8. Imput impedansce of test equipment which is connected to gap out terminal should be more than 1 MΩ.
9. To connect a grounding type equipment to gap out terminal directly my cause false output.
FOREWORD WK
ii
Make it a rule to follow the instructions given in this manual. This manual contains important information designed to prevent personal injury and property damage, and
ensure safe operation of the equipment.
Familiarize yourself with the signs and symbols explained below before proceeding to read the manual, and
observe the instructions given.
Explanation of signs
Symbols Explanation
WARNINGIndicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to permit for property-damage-only accidents.
◊ "Serious injury" refers to such injuries as loss of eyesight, injuries, burns (due to heat or cold), electric
shock, fractures, and poisoning, that have permanent aftereffects and require hospitalization or long-term
outpatient treatment.
◊ "Moderate or minor injury" refers to such injuries as burns and electric shock that do not require
hospitalization or long-term outpatient treatment. "Property-damage-only accidents" refers to
consequential damage related to destruction of property and damage to the equipment.
Explanation of symbols
Symbols Explanation
Indicates a prohibited action. Details are given in the text next to the symbol.
Indicates a mandatory action. Details are given in the text next to the symbol.
FOREWORD WK
iii
To ensure safe use of this equipment, strictly observe the safety precautions provided in this manual, as well
as installation methods and methods of use stipulated by laws and regulations. SHINKAWA Sensor
Technology will not be liable for damage, etc. due to methods of use contravening to the instructions provided
here.
Safe use
WARNING
Make sure to ground. May cause electric shock or malfunction.
Make sure to turn the power off before any wiring work. Will cause electric shock.
CAUTION
Make sure that the supply connected to the Power / Output terminal has the specified voltage. Will cause damage and malfunction of the instrument.
The equipment is a precision instrument. Take care not to expose it to excessive shock or vibration.
Do not change the parameter settings during operation. May cause unexpected alarm output.
Do not measure insulation resistance and dielectric strength other than those at places specified. Will cause damage to the instrument.
Do not remodel this monitor unit without permission. Otherwise the guarantee can not be made.
PROHIBITION
Connect earth wire
PROHIBITION
MANDATORY
PROHIBITION
PROHIBITION
PROHIBITION
FOREWORD WK
iv
EMC(Electro-magnetic compatibility) The EMC of WK series transmitter is evaluated by various noise tests.
However, its characteristics may vary with on environmental conditions such as the magnitude of noise,
ambient temperature, humidity and the arrangement of equipment.
For the above reason, when operating the system, please observe the following CAUTION.
CAUTION
The transmitter should be operated by specialists or people who have its knowledge. When a shielded cable is used, the length of the unshielded cable section should be less than 100mm (3.937in REF.). For each relay used near this system, devices related to this system or signal cables connecting the system and these devices, install a surge killer.
The transmitter should be put into the EMC shield enclosure, if the transmitter is installed at noisy surroundings. And the enclosure should be grounded for EMC shield grounding. The signal transmitter cable, sensor cable and extension cable should be lay into the metal conduit, if the cable passes through noisy surroundings. And the conduit should be grounded for EMC shield grounding. In order to prevent the system from its malfunction when the system fails, provide the systematic interlock function.
Do not wire signal transmitter cables, sensor cable and extension cable in parallel with control and power cables. It is recommended that separated wire ducts be used for these cables.
Do not use any radio equipment near the system.
MANDATORY
MANDATORY
MANDATORY
MANDATORY
MANDATORY
PROHIBITION
PROHIBITION
MANDATORY
FOREWORD WK
v
Noise filter Noise transmitted through in each cable may be rejected to some extent by inserting a ferrite core in the cable
(note 1).
If the cable passes through noisy surroundings, it is recommended that such a noise prevention device is used.
(note 1) ZCAT3050-1330 : TDK
TABLE OF CONTENTS WK
vi
FOREWORD 1. GENERAL INFORMATION
1.1 GENERAL -------------------------------------------------------------------------------------- 1 1.2 RECEIVING INSPECTION ------------------------------------------------------------------ 1 1.3 STORING ---------------------------------------------------------------------------------------- 1
2. SPECIFICATIONS 2.1 STANDARD SPECIFICATIONS ---------------------------------------------------------- 2 2.2 OUTLINE DRAWING AND MODEL CODE --------------------------------------------- 3
3. INSTALLATION 3.1 SYSTEM COMBINATION ------------------------------------------------------------------ 5 3.2 SENSOR INSTALLATION CONSIDERATIONS ------------------------------------- 5 3.3 RELATION BETWEENTARBGET SHAPE AND SENSOR------------------------- 6 3.4 EFFECT OF INSTALLING CONDITIONS----------------------------------------------- 6 3.5 WK TRANSMITTER INSTALLATION --------------------------------------------------- 8
4. INTERCONNECTION 4.1 INTERCONNECTION OF SYSTEM COMPOSITION PARTS -------------------- 9 4.2 CONNECTOR INSTALLATION ------------------------------------------------------------ 9 4.3 CONNECTION OF SIGNAL TRANSMITTER CABLE-------------------------------- 10 4.4 WIRING------------------------------------------------------------------------------------------- 11
5. CALIBRATION 5.1 CALIBRATION---------------------------------------------------------------------------------- 13
6. MAINTENANCE/INSPECTION 6.1 PERIODIC INSPECTION -------------------------------------------------------------------- 14 6.2 TROUBLESHOOTING------------------------------------------------------------------------ 15
7. CHARACTERISTICS DATA
7.1 STANDARD STATIC CHARACTERISTICS -------------------------------------------- 16
1. GENERAL INFORMATION WK
-1-
1.1 GENERAL
Model WK-142K 2-Wire Vibration Transmitter is most suitable measuring system for shaft vibration of rotating machinery and the system consists of WL sensor, WW extension cable and WK transmitter. It detects displacement (gap) between sensor and observed material (target) precisely without physical contact with target by the eddy current principle, and outputs voltage proportioned to gap from gap out terminal and BNC connector. Vibration amplitude can be measured by 4 to 20 mA output as consumption of current loop.
1.2 RECEIVING INSPECTION When the unit is received, inspect it for damage suffered in transport and check whether it is the item you ordered. In the unlikely event that it was damaged in transport or does not function according to specifications, please contact the SHINKAWA Office or dealer nearest you.
1.3 STORING Store the unit under the ambient conditions given in the specification. Avoid places where it is exposed to high humidity or corrosive gases.
2. SPECIFICATIONS WK
-2-
2.1 STANDARD SPECIFICATIONS
Current Output
4 to 20mA OUTPUT RANGE
0 to 100µm pk-pk 0 to 125µm pk-pk 0 to 200µm pk-pk 0 to 250µm pk-pk 0 to 400µm pk-pk
4 to 20mA OUTPUT CONVERSION ACCURACY
±1.5 % of Full Scale Range (From test signal input pin to current output)
MAX. LOAD REGISTANCE
43.5 × (Vps-12) ( (Vps=Power supply voltage)
NOT-OK FUNCTION Current output : 3.6mA or less. Not-OK condition : Open or short of sensor, Outside of linear range. Delay time to resume ; 2 to 3 seconds after Not-OK condition is removed.
GAP Output (Wave form output)
CALIBRATION MATERIAL
JIS SCM440 FLAT (AISI 4140 equivalent )
LINEAR RANGE* 1.4mm (Gap : 0.3 to 1.7mm) SCALE FACTOR* 7.87mV/µm SCALE FACTOR ERROR*
7.87mV/µm±6.5% typ. (including interchangeability errors) Step : 200µm, Target : 30 mm dia.
OUTPUT IMPEDANCE*
10kΩ (It is calibrated load impedance at 10MΩ)
System
1. CALIBRATION MATERIAL MODEL WK-142K 2-wire Vibration Transmitters are calibrated with JIS SCM440 (AISI 4140 equivalent) flat surface (more than 15 mm dia.). It is not calibrated with any other target.
2. CONNECTOR ISOLATION, etc. The connector connecting the sensor cable and the extension cable shall be insulated with the attached insulation sleeve (transparent shrink tube) or fluoro resin insulation tape. The vinyl-insulating tape shall not be used, which may cause the wiring trouble in the case of the temperature more than 80°C. The connector shall not be located in the oil environment. The oil penetration to cable through the connector may cause the sensitivity change, due to the change of the cable capacitance.
3. MEGGER TEST OF SIGNAL CABLE If megger test is made on the signal cable (2-wire shielded cable), be sure to discharge the charged electric load before connecting the cable to transmitter. If this caution is not adhered the transmitter could be damaged.
4. WIRING BETWEEN GAP OUT TERMINAL AND EQUIPMENT a). Non-grounding type equipment Connect directly with coaxial cable within 3 meters long. b). Grounding type equipment Use an isolator between the transmitter and the equipment. Use coaxial cable within 3 meters long between the transmitter and the isolator.
5. SENSOR INSTALLATION Not available for rainwater at out door use. It may cause the sensitivity change and insulation down.
FREQUENCY RESPONSE*
5Hz to 6,000Hz (+0dB, -3dB) at 900µm Gap
TEMPERATURE RANGE OF TRANSMITTER
Operating : 0 to 70°C(32 to 158°F) Storage : -34 to +100°C(-29 to +212°F)
TEMPERATURE RANGE OF SENSOR AND EXTENSION CABLE
Operating : -34 to +177°C (-29 to +350°F) (Connector : Max. 125°C (257°F)) Storage : -34 to +177°C (-29 to +350°F) (Connector : Max. 125°C (257°F))
RANGE OF TEMPERATURE AT EXPLOSION PROOF CONSTRUCTION
CSA,ATEX : 0 to +70°C (Sensor, Ext. Cable & Transmitter)
RELATIVE HUMIDITY 95%RH (non condensing) POWER SUPPLY VOLTAGE
12 to 35VDC
SENSOR TIP DIAMETER
Approx. 5.5mm (0.217 inch) dia.
CABLE DIAMETER Approx. 2.7mm (0.106 inch) dia. CONNECTOR DIAMETER
Approx. 7.1mm (0.280 inch) dia.
SYSTEM CABLE LENGTH
5m or 7m
TRANSMITTER SIZE (L) 100mm × (W) 74 mm × (H) 50 mm (3.94 in) (2.91 in) (1.97 in) Mass : Approx. 530g (1.2 lb)
*The above specifications apply at 25°C with 24VDC power supply and SCM440 (AISI 4140 equivalent) steel flat target.
Other
SPECIFICATIONS NOTICE
CONFIGURATION
WL Sensor WW Extension Cable
WK Transmitter
Connector
System Cable Length : 5m or 7m
30101E1.9
2. SPECIFICATIONS WK
-3-
2.2 OUTLINE DRAWING AND MODEL CODE 2.2.1 WL SENSOR
1) OUTLINE DRAWING
2) MODEL CODE
2.2.2 WW EXTENSION CABLE 1) OUTLINE DRAWING
2) MODEL CODE
WL-142K05 - / NB1
Armor Thread size Unthreaded length* (L1) Case length* (L2) Cable length (L3) Non-incendive
M1 M8 X 1 1 0.5m 1
CSA:Class Ⅰ Div.2
Gr.A,B,C,D ATEX:EEx nAⅡ
T6 M2 M10 X 1
10mm step, 0 to 230mm e.g.) 06=60mm, L1≤L2-20mm
10mm step, 20 to 250mm e.g.) 25=250mm
2 1.0m
A With
(Without Fluoro resin coating)
U1 1/4-28 UNF-2A 3 5.0m U2 3/8-24 UNF-2A
0.1 in step, 0 to 9.2in e.g.) 04=0.4in, L1≤L2-0.7in
0.1in step, 0.8 to 9.9in e.g.) 35=3.5in 4 7.0m
T With
(With Fluoro resin coating)
* inch for UNF-2A thread mm for M thread
L Without
Dimensions : mm (inch)
3.0
L1 3.2 5.0
L2 L3 +30%
- 0%
φ 7.
1
φ 5.
5
Sensor tip
Jam nut
Thread
Wrench flat.
Flexible armor
Coaxial cable
φ 2.
7
Coaxial connector
Model code Serial No.
Sensor side
φ 2.
7
φ 6.
8
φ 8.
0
φ 7.
1
Transmitter side
L +30% - 0%
Coaxial cable
Coaxial connector Coaxial connector
Flexible armor
Dimensions : mm (inch)
(0.2
2)
(0.1
1)
(0.2
8)
(0.20)
(0.12)
(0.13)
(0.2
8)
(0.2
7)
(0.3
1)
(0.1
1)
WW-142K
Armor Extension cable length Non-incendive
A With (Without Fluoro resin coating) 1 4.0m 1CSA:Class ⅠDiv.2 Gr.A,B,C,D
ATEX:EEx nAⅡT6 T With (With Fluoro resin coating) 2 4.5m L Without 3 6.0m 4 6.5m
- / NB1
2. SPECIFICATIONS WK
-4-
2.2.3 WK TRANSMITTER
1) OUTLINE DRAWING
2) MODEL CODE
3) NAME PLATE
4) SIDE LABEL
A) Model code B) 4 to 20mA Output range C) System length D) Serial number E) Tag. Number (Option)
ZERO SPAN
TEST PIN
(Front) (Reverse)
!
GAP OUT 2-wire Transmitter Remove label for ZERO and SPAN adjust
CAUTION Grounded AC powered equipment can cause false alarm. Do not connect it to GAP OUT.
SENSOR
74
63.5
Logo
Sensor Input Connector
70 (2.76)
Name plate
Power / Output
Gap out
4-φ 4.3 Model code and Ser.No. 9 (0.354)
(2.9
1)
(2.5
0)
(0.169)
Gap out
100 (3.94)
25.5
50
(1.9
7)
(1.0
0)
Insulator Dimensions:mm (inch)DIN Mounting Clips(Option)
C) WK-142K1 - 2
5m system Vibration:0-125µm pk-pk Ser.No. AV01234 Tag.No. 1234-01
D) E)
A) B)
/ NB1 /DNC/ CEM WK-142K
System Cable length Output Range Non-incendive With DIN Mounting Clips CE marking
1 5m 1 0 to 100µmpk-pk 1CSA:Class ⅠDiv.2 Gr.A,B,C,D
ATEX:EEx nAⅡT6
2 7m 2 0 to 125µmpk-pk 3 0 to 200µmpk-pk 4 0 to 250µmpk-pk 5 0 to 400µmpk-pk
-
3. INSTALLATION WK
-5-
3.1 SYSTEM COMBINATION
WL Sensor WW Ex. Cable System length WK Transmitter
0.5m 4.5m 5m WK-142K1
0.5m 6.5m 7m WK-142K2
1.0m 4.0m 5m WK-142K1
1.0m 6.0m 7m WK-142K2
5.0m None 5m WK-142K1
WK-142K System Combination
7.0m None 7m WK-142K2
3.2 SENSOR INSTALLATION CONSIDERATIONS
The system provides a linear range of 1.4 mm (a gap of 0.3 to 1.7 mm between sensor and target) and is calibrated for JIS SCM440 (AISI 4140 equivalent) as a standard target material. The system can measure the gap in the linear range. Recommended standard setting gap is 0.9 mm.
! CAUTION 1. Install and fix the sensor to keep the gap within the linear range to
prevent contact with target or out of linear range. 2. Be careful not to damage or scratch the sensor tip and target
surface with thickness gauge.
Take care the effect for output characteristics by the relation between target shape and sensor or installing condition with reference to 3.3 and 3.4.
! CAUTION 1. The existence of other metals than the target near the installed
sensor and/or inadequate sensor installing position may impede correct measurement.
WL Sensor WW Extension WK Transmitter
3. INSTALLATION WK
-6-
3.3 RELATION BETWEEN TARGET SHAPE AND SENSOR a)
b) c)
3.4 EFFECT OF INSTALLING CONDITIONS a) b)
c) d)
e) f)
g) h)
5 mm
Distance X>8mm
No effect and best installation.
Distance X>8mm
Y>15mm
No effect and best installation.
Same as b). Such
Insulating material as
Resin is filled
in the slant line section.
No effect
Distance X<8mm
There is effect.
When the sensor
Neighborhood is
Countersunk.
There is effect
Distance Y<15mm
There is effect.
Gap X<0.3mm
Too close to measure
because of dead zone.Gap X1 Gap X2
There is effect.
X
Target
Mounting Plate
XY
Mounting Plate
Target
Mounting Plate
Target
X
Target
Mounting Plate
Mounting Plate
Target Y
Mounting Plate
Target
X
Target
Mounting Plate
X2
X1
Mounting Plate
Target
d>15mm no effect
X>7.5mm no effect
Mounting Plate
d x
d>50mm no effect X>7.5mm no effectMounting Plate
X
Casing
Target
d Target
3. INSTALLATION WK
-7-
The installing effect are as shown below. As the above results show, it is most preferable to install the sensor as shown in a) to c). However if the sensor is required to be installed as shown in d) to f), calibration in installed conditions is necessary. Also, the dead zone as shown in the above should be noted.
! CAUTION The following conditions must be met to ensure accurate vibration detection. 1. The target surface must be more than 3 times the sensor tip diameter (fig.
3.1(a)). 2. There must not be any conductive materials within a range of 3 times the
sensor tip diameter (fig. 3.1(b)). 3. To avoid mutual interference between sensors, a minimum distance
corresponding to 5 times the sensor tip diameter must be maintained between sensors (fig. 3.1(c)).
4. Use a sufficiently rigid installation method to prevent vibration of the sensor itself (fig. 3.1.(d))
5mm
25mm
25mm
15mm
(a)
(c)
15mm
(b)
(d)
Fig.3-1
Distance(µm)
d) to f)
a) to c)
h)
Dead zone
Output(V)
3. INSTALLATION WK
-8-
3.5 WK TRANSMITTER INSTALLAION
• Make sure to install and fix the transmitter. When installing the transmitter, avoid a place with high vibration, instability, high temperature and much moisture as well as high-density corrosive materials.
3.5.1 INSTALLATION WITH SCREWS Install and fix with screws using each hole at the four corners as shown in dextral figure. • Do not use screws other than attached as standard accessories, Or the transmitter may be influenced of the noise because of grounding the body. Tightening Torque 1.18N･m (12kgf･cm) or less
3.5.2 DIN Mounting Clips (When fixing DIN mounting clips by user.) When user fixes DIN mounting clips before using, screw up and fix the DIN mounting clips on the bottom surface of WK transmitter with insulation bushings and screws as shown below.
! CAUTION
Use the insulation bushing and washers to prevent earth fault via DIN rail. Make sure to use the insulation bushing and washers.
3.5.3 INSTALLATION ON DIN RAIL Refer to following figures to mount on and remove from DIN rail.
Screw
1
2 1
2
Mounting on DIN rail Removing from DIN rail
DIN mounting clip
Insulator
Screw
Insulation convexity bushing
Insulation flat washer
4. INTERCONNECTION WK
-9-
4.1 INTERCONNECTION OF SYSTEM COMPOSITION PARTS
! CAUTION 1. Before tightening the connector, the connector internal should be checked to confirm
that there is no foreign particle, which may cause the bad characteristics due to the imperfect contact.
2. As the connector needs to be firmly tightened to avoid looseness after being tightened, it is recommended that the connector be tightened by the following torque. Tightening torque : 0.92N･m ± 0.1N･m (9kgf･cm ± 1kgf･cm)
3. Beware not to apply the excessive force on the thread part of the connector, which may cause the damage.
4. After tightening connector, make sure that the cable torque does not cause the connector to loosen again. If the installation conditions cannot be changed to prevent this force acing on the connector, the force should acts in the tightening direction of the connector. If the installation direction of the extension cable is such that a force acts in loosening direction of the connector, twist the extension cable lightly in the direction of that the resulting repulsive force acts to tighten the connector. Then connect the connector and tighten. (SHINKAWA Electric recommends to take up the surplus length of the extension cable by winding it into a cable box. If the excessive extension cable needs to be accommodated in the housing for some unavoidable reasons, do not push it forcibly in the housing, and also do not cut it.)
4.2 CONNECTOR INSTALLATION
When installing sensor and extension cables, cover coaxial connector with insulation sleeve (transparent shrink tube) for ground insulation and insulation to flexible armor (option).
Step 1) Pass connector through insulation sleeve. Step 2) Connect connector.
(1) Check that no foreign substance is present in the connector. (2) Insert connector male connector into female connector. (3) Tighten the collar by fingers.
Step 3) Cover connector with insulation sleeve. Step 4) Carefully apply heat to shrink insulation sleeve.
• If insulation sleeve tubing is not available, wrap the connector with insulating material such as fluoro resin tape.
! CAUTION The vinyl-insulating tape shall not be used, which may cause the wiring trouble in the case of the temperature more than 80°C (176°F).
Insulation sleeve
4. INTERCONNECTION WK
-10-
4.3 CONNECTION OF SIGNAL TRANSMITTER CABLE
• For interconnection between the WK transmitter and other equipment, make sure to use 2-core shielded cables or pair shielded standard 2-wire instrument cables, since the signal transmitted is weak.
! CAUTION Do not use unshielded cables or non-pair shielded multicore cables as the measured values could be affected by external noise.
4.3.1 RECOMMENDED CABLES
Cable Recommended Note
2-core shielded cable
EXCELLENT
Normal : Silver plated braid. Recommended: Copper tape shield. (Core wire : Soft copper wire) Use conduit pipe (cable rack) for wiring.
Instrument cable
GOOD
Vibration and displacement signals can exit in one instrument cable. A high amplitude vibration signal exerts injurious influence over other displacement and vibration signals in a common cable. Therefore, separate cables must be used. Recommended: Outside shield of aluminum or copper tape.
! CAUTION 1. For cable wiring for pulse signals (phase marker, revolution) separate them from cables for
vibration transmitter signals. 2. Avoid running signal transmission cables together with control and power cables. 3. Install all cables in conduit pipes or on cable racks. 4. After the megger test of the signal cable, discharge the charged electric load before
connecting the cable. If this caution is not adhered to, the transmitter and connecting equipment could be damaged.
Conduit pipe
Shield wire
Conduit pipe
Shield wire
Outside shield
4. INTERCONNECTION WK
-11-
4.4 WIRING
The loop resistance is the total resistance of the power supply output, the receiver, field wiring, and any other devices placed in the loop. Use following equation to determine the maximum loop resistance:
Operation outside of the operating region shown above may result in erratic system behavior.
Use the following wiring diagrams to connect the field wiring between the transmitter and the monitoring instruments.
Rec
eive
r R
ecei
ver
1000
500
0Max
imum
Loo
p R
esis
tanc
e
Power Supply Voltage
353025 20 1512(VPS)
(Ω) OPERATING REGION
RLOOP = 43.5 x (VPS-12) Ω max.
+
++ Cable Shield *
Power Supply VPS = 17 to 35 VDC
Rec
eive
r +
++
Cable Shield *
Power Supply VPS = 17 to 35 VDC
Rec
eive
r
+
+
Cable Shield * +
Power Supply VPS = 17 to 35 VDC
+
* Recommended wiring is shielded. Twisted pair. 1.0 mm2 (18 AWG) (ordered separately)Max. length = 1 km (0.62 miles)
Common (Ground)
Common (Ground)
Common (Ground)
4. INTERCONNECTION WK
-12-
Use the following wiring diagrams to connect to the GAP OUT terminals,
Rec
eive
r
+
+ Cable Shield *
Common (Ground)
Rec
eive
r
+
++ Cable Shield *
Power Supply VPS = 17 to 35 VDC
Battery Powered Test Equipment (Non-grounding type equipment) With 1 MΩ Min. Isolated Input.
(Output will drop approximately 1 % down.)
Isolator
Grounding type Equipment
Common (Ground)
Battery Powered Test Equipment (Non-grounding type equipment) With 1 MΩ Min. Isolated Input.
(Output will drop approximately 1 % down.)
* Recommended wiring is shielded. Twisted pair. 1.0 mm2 (18 AWG) (ordered separately)Max. length = 1 km (0.62 miles)
5. CALIBRAION WK
-13-
5.1 CALIBRATION
5.1.1 ADJUST ZERO POTENTIOMETER
1) Set a gap between sensor and target in 1.0 milimeters. 2) Adjust zero potentiometer with no test signal.
5.1.2 ADJUST SPAN POTENTIOMETER
1) Set a gap between sensor and target in 1.0 milimeters. 2) Connect a oscillator output to test signal input pin and COM terminal of output terminal block. 3) Adjust span potentiometer with full scale test signal.
! CAUTION Oscillator does not connect to ground.
Test Signal
none 4 mA 1 V
F.S. Test signal* (OSC. Output)
100 µm 787 mV pk-pk 125 µm 984 mV pk-pk 200 µm 1,574 mV pk-pk 250 µm 1,968 mV pk-pk 400 µm 3,148 mV pk-pk
20 mA 5 V
SPAN Adjust Potentiometer Refer to 5.1.2
ZERO Adjust Potentiometer Refer to 5.1.1
Test Signal Input Pin Refer to 5.1.2
Do not change. Manufacturer use only. Remove name plate.
TAR
GE
T
1 mm
V
A 250 Ω
1 mm
TAR
GE
T
V
A 250 Ω
OSCILLATOR
A V
A V
* Sin. wave =300 Hz
6. MAINTENANCE / INSPECTION WK
-14-
The following is a description of maintenance and inspection procedures for this unit.
6.1 PERIODIC INSPECTION
In order to maintain the performance and secure system stability of this unit, carry out the periodic inspection
once a year.
The following is the inspection items.
6.1.1 GAP VOLTAGE VALUES CONFIRMATION.
Check the gap voltage values using the following procedure.
1) Turn the power ON.
2) In order to stabilize output, warm up for 5 minutes. (Leave alone for 5 minutes.)
Warm up is performed in order to correct accurate data.
3) Connect the voltmeter to GAP OUT - COM terminal on the transmitter terminal block, read the voltage.
The voltmeter to connect GAP OUT - COM terminal is portable equipment (battery powered non-grounding type equipment). Therefore, please use the voltmeter which is more than 1MΩ input impedance.
4) Refer to "7.1 Standard static characteristic"(P16), and make sure that the desired set gap voltage is gained.
Data indicated in "7.1 Standard static characteristic" are measured for a JIS SCM440 (AISI 4140 equivalent)
flat target (diameter more than 15mm).
When the target material or shapes differ, the output characteristics will differ.
6.1.2 SENSOR APPEARANCE CONFIRMATION.
Dismount the sensor, and confirm scratch or wear mark of the sensor tip which is the part of black resin.
When the sensor tip has scratch or wear mark, please replace it.
6.1.3 CONVERSION OUTPUT (4 to 20mA output) CONFIRMATION.
Refer to "5.1 Calibration" (P13), and confirm conversion output (4 to 20mA output) by inputting test signal.
Voltmeter : Battery Powerrd Test Equipment (Non-grounding type Equipment)
With 1MΩ Min. Isolated input impedance. (Output will drop approximatery 1%.)
Power Supply Vps= 17 to 35 Vdc
Target
6. MAINTENANCE / INSPECTION WK
-15-
6.2 TROUBLESHOOTING
No. TROUBLE PROBABLE CAUSE CHECK COUNTERMEASURES1) Power is not supplied.
1) Measure power supply
voltage. 1) Supply power.
1 Gap output is zero and
no change. 2) Faulty transmitter. 2) Replace. 1) Sensor is too close to
target. 1) Measure distance.
1) Adjust.
2) Short circuit in sensor.
2) Measure resistance. (Normally approx. 4Ω + 0.22 Ω/m)
2) Replace.
3) Short or open circuit in extension cable.
3) Measure resistance. Normally; Inner conductor Approx. 0.3 Ω/m Outer conductor Approx. 0 Ω/m Between inner and outer conductors ∞
3) Replace.
4)Faulty transmitter. 4) Replace.
2 Gap output does not change from approx. 0.2V.
5) A foreign substance is included in a connector.
5) To remove the foreign
substance.
1) Far distance between target and sensor.
1) Measure distance.
1) Adjust.
2) Open circuit in sensor.
2) Measure resistance. (Normally approx. 4Ω + 0.22 Ω/m)
2) Replace.
3) Faulty transmitter. 3) Replace.
3 Gap output does not change from approx. 16V.
4) Is connector securely connected. 4) Connect securely.
1) Power is not supplied.
1) Measure power supply
voltage. 1) Supply power.
4 Current output is zero
and no change. 2) Faulty transmitter. 2) Replace. 1) Sensor is too close to
target. 1) Measure distance.
1) Adjust.
2) Short circuit or Open
circuit in sensor.
2) Measure resistance. (Normally approx. 4Ω + 0.22 Ω/m)
2) Replace.
3) Short or open circuit in extension cable.
3) Measure resistance. Normally; Inner conductor Approx. 0.3 Ω/m Outer conductor Approx. 0 Ω/m Between inner and outer conductors ∞
3) Replace.
4) Faulty transmitter. 4) Replace.
5 Current ouput does not change from approx. 3.6mA.
5) A foreign substance is included in a connector.
5) To remove the foreign
substance.
7. CHARACTERISTICS DATA WK
-16-
7.1 STANDARD STATIC CHARACTERISTICS
Target material: JIS SCM440 flat (dia. 15mm or more)
0
2
4
6
8
10
12
14
16
0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00GAP(mm)
Outpu
t (V)
-15
-10
-5
0
5
10
15
0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00GAP(mm)
SCF
Error
(%)
Warranty
The warranty conditions for this unit are as follows. 1. Warranty conditions for newly delivered products.
The warranty period for the delivered product is 3 years (1 year for special products and software) from the time of shipment from our factory. If a failure occurs in the delivered product due to our fault during this warranty period, we will take responsibility for the replacement/repair of that product. Also, if it becomes necessary to dispatch an engineer within the warranty period, traveling expenses based on our company regulations will be charged. The repair cost at this time will be covered by our company. If one of the following conditions applies, the failure will not be covered by this warranty.
(1) Improper handling or use by the customer. (2) If the cause of the problem is due to a reason other than by the fault of our company. (3) If there were modifications or repairs made by a party other than our company or
persons specified by our company. (4) Handling, storage, or usage under severe environments exceeding design
specification conditions. (5) Problems caused by fires, floods, earthquakes, lightning strikes and other natural
disasters. (6) Consumable parts. (7) Other failures that are not at the fault of our company.
The warranty here covers the delivered product only, and we will not take responsibility for any direct or indirect damages caused by the malfunction of the delivered product. Warranty periods and coverage of warranties for devices manufactured by those other than our company will be at the responsibilities and conditions of those respective manufacturers, regardless of this document.
2. Warranty conditions for repaired products
The Warranty period for repaired items will be 6 months after the date of repairs for that item. Other conditions will be as 1. above.
Hiroshima Factory 4-22 Yoshikawa kogyodanchi, Higashihiroshima 739-0153 Japan Tel. +81-82-429-1118 (representative) Fax. +81-82-429-0804 [Service department] Email [email protected]