operating instructions temperature transmitter · 2019. 10. 9. · warning alarm failure 1 drift...
TRANSCRIPT
Operating instructions Temperature transmitter
TADx81 TADx91
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Contents1 Preliminary note ���������������������������������������������������������������������������������������������������3
1�1 Symbols used ������������������������������������������������������������������������������������������������32 Safety instructions �����������������������������������������������������������������������������������������������33 Getting started �����������������������������������������������������������������������������������������������������44 Functions and features ����������������������������������������������������������������������������������������55 Function ���������������������������������������������������������������������������������������������������������������5
5�1 IO-Link �����������������������������������������������������������������������������������������������������������65�2 Analogue function ������������������������������������������������������������������������������������������65�3 Diagnostic function ����������������������������������������������������������������������������������������8
5�3�1 Drift monitoring ������������������������������������������������������������������������������������85�3�2 Sensor backup (redundancy switching) ������������������������������������������������95�3�3 Diagnostic cases ��������������������������������������������������������������������������������105�3�4 Diagnostic function in 2-wire operation �����������������������������������������������105�3�5 Diagnostic function in 3-wire operation ����������������������������������������������� 115�3�6 Process data transmission in IO-Link operation ���������������������������������13
6 Installation ���������������������������������������������������������������������������������������������������������146�1 Units with G1 / Aseptoflex Vario process connection����������������������������������14
6�1�1 Installation using an adapter with sealing ring (hygiene-compliant) ��146�1�2 Installation using a welding adapter with sealing ring (hygiene-compliant) �����������������������������������������������������������������������������������������������������146�1�3 Installation using a process adapter with metal-to-metal seal ������������156�1�4 Installation to G 1 flange ���������������������������������������������������������������������15
6�2 Units with process connection G ½ sealing cone ����������������������������������������156�3 Use in hygienic areas to 3-A ������������������������������������������������������������������������156�4 Use in hygienic areas to EHEDG ����������������������������������������������������������������16
7 Electrical connection ������������������������������������������������������������������������������������������178 Parameter setting ����������������������������������������������������������������������������������������������17
8�1 Adjustable parameters ���������������������������������������������������������������������������������189 Operation �����������������������������������������������������������������������������������������������������������1910 Technical data ��������������������������������������������������������������������������������������������������19
10�1 Setting range for drW / drA ������������������������������������������������������������������������19
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1 Preliminary noteTechnical data, approvals, accessories and further information at www�ifm�com�
1.1 Symbols used
► Instructions> Reaction, result[…] Designation of keys, buttons or indications→ Cross-reference
Important note Non-compliance may result in malfunction or interference�Information Supplementary note�
2 Safety instructions• The device described is a subcomponent for integration into a system�
- The manufacturer of the system is responsible for the safety of the system� - The system manufacturer undertakes to perform a risk assessment and to create a documentation in accordance with legal and normative requirements to be provided to the operator and user of the system� This documentation must contain all necessary information and safety instructions for the operator, the user and, if applicable, for any service personnel authorised by the manufacturer of the system�
• Read this document before setting up the product and keep it during the entire service life�
• The product must be suitable for the corresponding applications and environmental conditions without any restrictions�
11 Fault correction ������������������������������������������������������������������������������������������������2112 Factory setting �������������������������������������������������������������������������������������������������22
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• Only use the product for its intended purpose (→ 4 Functions and features)�• Only use the product for permissible media (→ 10 Technical data)� • If the operating instructions or the technical data are not adhered to, personal
injury and/or damage to property may occur� • The manufacturer assumes no liability or warranty for any consequences
caused by tampering with the product or incorrect use by the operator�• Installation, electrical connection, set-up, operation and maintenance of the
product must be carried out by qualified personnel authorised by the machine operator�
• Protect units and cables against damage�
3 Getting started
Detailed description under → 8 Parameter setting�
1� Connect unit to PC to set the parameters via the IO-Link interface�2� Set the standard unit of measurement�
- [Uni]: °C or °F3� Set analogue signal�
- [OU2]: I = 4���20 mA or I neg = 20���4 mA - [ASP] and [AEP]: scaling of the measuring range�
4� Set drift monitoring� - [drW]: drift threshold from which the unit signals "warning"� - [drA]: drift threshold from which the unit signals "alarm"� - [ddr]: delay time of the drift detection�
5� Select diagnostic cases that should be signalled (→ 5.3.3)� - [drEd]: ON = only diagnostic cases of category "failure" ONdr = diagnostic cases of categories "alarm" + "failure" OFF = diagnostic cases of categories "warning" + "alarm" + "failure"
6� Configure analogue signal for diagnostic case - [FOU2]: On = 21�5 mA or OFF = 3�5 mA
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7� Configure switching signal for diagnostic case (only 3-wire operation without IO-Link) - [dOU1]: Output opens / closes / pulsates; according to setting Table 3 → 5.3.5�
8� Configure output logic for diagnostic output (only 3-wire operation without IO-Link) - [P-n]: pnp or npn
9� Finish parameter setting, install (→ 6), connect (→ 7) and set up unit�
4 Functions and featuresThe unit detects the medium temperature and provides the measured value via an analogue or a digital signal�The unit features an integrated diagnostic function and a drift monitoring� The diagnostic messages are provided via an analogue signal in 2-wire operation, in addition via a switching signal or as a digital communication signal via the IO-Link interface in 3-wire operation� The switching output can be used for diagnostics�
5 Function• The unit has an IO-Link interface� This offers the following additional functions:
- Remote parameter setting of the unit� - Transmission of the set parameter values to other sensors� - Simultaneous reading of all process values (mean value of both sensor elements, Pt 1000 sensor element, NTC sensor element) and the binary switching signal�
- Comprehensive display of error and event messages� - Display of minimum and maximum temperature values�
• The unit is designed for two or three-wire operation� Depending on the operating mode the following output signals are provided:
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Operating mode
Output signals
2 wires OUT: - Analogue signal for temperature measurement and diagnostics
3 wires OUT1: - Switching signal for diagnosticsor
- IO-Link signal for temperature measurement and diagnostics
OUT2: - Analogue signal for temperature measurement and diagnostics
5.1 IO-LinkThis unit has an IO-Link communication interface which enables direct access to process and diagnostic data� In addition it is possible to set the parameters of the unit while it is in operation� Operation of the unit via an IO-Link interface requires an IO-Link master�With a PC, suitable IO-Link software and an IO-Link adapter cable communication is possible when the system is not in operation�The IODDs necessary for the configuration of the unit, detailed information about process data structure, diagnostic information, parameter addresses and the necessary information about the required IO-Link hardware and software can be found at www�ifm�com�
5.2 Analogue functionThe unit converts the measured temperature value into a temperature-proportional analogue signal�In addition the analogue output is used for diagnostics (→ 5.3 Diagnostic function): The transfer of the measured temperature value is interrupted for diagnostic messages depending on the operating mode and the setting of drEd and an analogue signal according to NE43 of 3�5 mA (FOU2 = OFF) or 21�5 mA (FOU2 = On) is provided�Depending on the parameter setting (→ 8.1) the analogue signal is within the measuring range�
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4���20 mA with setting [OU2] = I or 20���4 mA with setting [OU2] = Ineg�The measuring range is scalable:• [ASP] defines at which measured temperature value the analogue signal is
4 mA (OU2 = I) or 20 mA (OU2 = Ineg)�• [AEP] defines at which measured temperature value the analogue signal is
20 mA (OU2 = I) or 4 mA (OU2 = Ineg)�Minimum distance between [ASP] and [AEP] = 5 K�
If the measured temperature value is outside the scaled measuring range, the analogue signal is 20...20.5 mA or 3.8...4 mA (→ Figure 1). When the measured temperature value continues to increase or decrease, case of diagnostic 5 occurs (→ 5.3.3)�
160
20
4
3.5
21.5
FOU = OFF
FOU = On20.5
3.8
I [mA]
-25 0 150MEWMAW ASP AEP
T [°C]
1
2
Figure 1: Output characteristics analogue output with factory setting1 Setting [OU2] = I2 Setting [OU2] = Ineg
MAW = initial value of the measuring range, MEW = final value of the measuring range, ASP = analogue start point, AEP = analogue end point
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5.3 Diagnostic functionBy measuring with two different, thermically coupled sensor elements (NTC, PT 1000) the unit automatically detects drifts and errors during temperature measurement� A mean average value is formed from the measured individual NTC and Pt 1000 values� This mean value is the basis for the provided measured temperature value and also the basis for the diagnostic messages with the drift monitoring (→ 5.3.1)�Besides temperature drift other errors can be detected� Via the parameter drEd you set which of the diagnostic cases is signalled�The diagnostic message cases are provided by an analogue signal in 2-wire operation, in addition by a switching signal or IO-Link diagnostic data in 3-wire operation�5.3.1 Drift monitoring For drift monitoring the unit compares the temperature deviation of sensor element 1 (NTC) and sensor element 2 (Pt 1000) from the mean value� The permissible temperature deviation is defined by the parameters drW = warning threshold and drA = alarm threshold� Based on the alarm threshold drA the drift failure threshold drF is automatically calculated (drF = drA + 3 K)� Setting drA = OFF automatically results in: drF = 8 K�When values exceed these thresholds, the unit identifies it as a diagnostic case�
t
T [°K]
3
2
1
drWdrA
drF = drA + 3 K
Figure 2: Drift monitoringExample: NTC sensor element (1) measures 65 °C, Pt 1000 sensor element (2) measures 60 °C� The mean value (3) is 62�5 °C, i�e� both elements deviate by 2�5 K� With setting drW = 2 °C and drA = 5 °C a warning message would be provided if drEd = OFF�
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There would not be an alarm message�
Setting range for drW / drA → 10.1
Due to the usual manufacturing tolerances a temperature difference of max� 0�1 K can also occur with new sensor elements� This does not affect the drift monitoring function�
In case of high temperature changes in the measured medium (e�g� filling a hot medium into a cold vessel) there may be a short-term difference between the measured temperature values of both sensor elements� To avoid short-term drift warnings:
► increase delay time ddr�
5.3.2 Sensor backup (redundancy switching)If one of the two sensor elements fails (= diagnostic case 4), it is possible to continue to measure the temperature with the other sensor element that is still operational� However, drift monitoring is not possible any more�
In 2-wire operation the setting [drEd] = ON must be selected so that the measured temperature value can be continued to be transferred�
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5.3.3 Diagnostic cases
Diagnostic case Diagnostic messages
Warning Alarm Failure
1 Drift warning threshold [drW] exceeded ●
2 Limit temperature internal electronics exceeded (+125°C) ●
3 Drift alarm threshold [drA] exceeded ●
4 Failure of one of the two sensor elements ●
5 Measured temperature value far outside the measuring range ●
6 Supply voltage outside the operating range* ●
7 Drift failure threshold [drF] exceeded (→ 5.3.1) ●
8 Error during parameter setting via IO-Link ●
9Failure of both sensor elements orgeneral electronics problems
●
Table 1: Diagnostic cases for 2-wire operation and 3-wire operation*Exception: For 2-wire operation no diagnostic message is provided in case of undervoltage� 5.3.4 Diagnostic function in 2-wire operationIn 2-wire operation the analogue output is used for temperature measurement and diagnostics� With [drEd] the diagnostic cases to be signalled can be set via the analogue output:
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Diagnostic messages Diagnostic cases
(→ 5.3.3)[drEd] Warning Alarm Failure
= ON ● 6���9= ONdr ● ● 3���9= OFF ● ● ● 1���9
Table 2: Setting of diagnostic cases to be signalled (2-wire operation) - Setting [drEd] = ON provides maximum availability since the transmission of the measured temperature value is only interrupted for the diagnostic message in diagnostic cases of category "failure"�
- Setting [drEd] = OFF provides maximum reliability of error detection since a diagnostic message is provided for every diagnostic case�
To signal a diagnostic case the transfer of the measured temperature data is interrupted and provided by the following analogue signal depending on the setting of [FOU]:[FOU2] = On: 21�5 mA[FOU2] = OFF: 3�5 mA
In the event of undervoltage (diagnostic case 6 → 5.3.3) no diagnostic message is provided in 2-wire operation�
5.3.5 Diagnostic function in 3-wire operationIn 3-wire operation the analogue output OUT2 is used for temperature measurement and diagnostics� In addition a switching output is used via OUT1 for diagnostics�
When the IO-Link interface is used, all diagnostic cases are always provided via OUT1� In addition, a signal is provided that corresponds to the behaviour of the physical switching output�
With [drEd] the diagnostic cases to be signalled can be set via the current output:Diagnostic messages Diagnos-
tic cases (→ 5.3.3)[drEd] Output Warning Alarm Failure
= ON Analogue output ● 6���9Switching output* ● 6���9
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Diagnostic messages Diagnos-tic cases (→ 5.3.3)[drEd] Output Warning Alarm Failure
= ONdr Analogue output ● 6���9Switching output* ● ● 3���9
= OFF Analogue output ● 6���9Switching output* ● ● ● 1���9
Table 3: Setting of diagnostic cases to be signalled (3-wire operation)* physical switching output as well as a switching output simulated via IO-Link�
Since all diagnostic cases can be signalled via the switching output in 3-wire operation, the analogue output only leaves its measured temperature value in diagnostic case of category "failure"� This ensures maximum use of the analogue output�
The parameter [dOU1] is used to define how the diagnostic output reacts to diagnostic messages:
NormalDiagnostic message
[dOU1] Warning Alarm Failure= ncnormally closed= nc+normally closed, extended
2 Hz
= no+normally open, extended
2 Hz
= Hbheartbeat
4 Hz 2 Hz
Table 4: Switching signal in diagnostic case
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5.3.6 Process data transmission in IO-Link operationIn 3-wire operation when the IO-Link interface is used, all diagnostic cases are described in the IODD of the unit are transmitted� Depending on the setting of drEd and dOU1 a signal is provided that corresponds to the physical switching output� In addition to the diagnostic message the IO-Link interface provides 3 process values: (1) Mean value from the individual values of both sensor elements(2) Measured value of the Pt 1000 sensor element(3) Measured value of the NTC sensor elementIn case of an event the process value transmission is interrupted according to table 5:
Process value Normal operation
drW ex-ceeded
drA ex-ceeded
Failure of a sensor element
Defect of the unit
(1) Temperature ● ● ● ● x(2) Temperature Pt ● ● ● — x(3) Temperature NTC ● ● ● — x
Table 5: Process value transmission via IO-Link
● Measured value is displayed� (If one sensor element fails: temperature = measured value of the remaining sensor element�)
— Measured value of the remaining sensor element continues to be provided� For the failed element, "NoData" is displayed instead of the measured value�
x "Invalid" is provided instead of the measured value�
List of all diagnostic cases readable via IO-Link (events and errors) → IO Device Decription (IODD) at www.ifm.com.
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6 Installation ► Before installing and removing the unit make sure that no pressure is applied to the system and there is no medium in the pipe�
► Note dangers related to extreme machine / medium temperatures�
6.1 Units with G1 / Aseptoflex Vario process connectionThe unit can be fixed to different process connections�
► Insert the unit with process adapter into the process connection and tighten using a spanner�
Information about available adapters at www�ifm�com� ► Observe the instructions of the adapter� ► Use a lubricating paste which is suitable and approved for the application�
► Recommended tightening torque 35 Nm�
6.1.1 Installation using an adapter with sealing ring (hygiene-compliant) Order no� E332xx / E333xx�
► To meet the hygiene regulations use a process adapter with leakage port� The adapters are supplied with EPDM O-ring (order no� E30054)� More sealing rings are available as accessories:• FKM O-ring (order no� E30123) • PEEK sealing ring (order no� E30124)� The PEEK sealing ring is long-term
stable and maintenance-free� When you replace the PEEK sealing ring or change from a PEEK sealing ring to an O-ring the process adapter also needs to be replaced with a new equivalent adapter�
6.1.2 Installation using a welding adapter with sealing ring (hygiene-compliant)
► To meet the hygiene regulations use a process adapter with leakage port� ► Make sure that the process adapter does not warp during welding�
The adapter is supplied with EPDM O-ring (order no� E30054)� Another sealing ring is available as accessory:• FKM O-ring (order no� E30123)�
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6.1.3 Installation using a process adapter with metal-to-metal sealOrder no� E337xx / E338xxA long-term stable and maintenance-free fitting without bug traps in the metal-to-metal seal is only valid for once-only mounting�If the sealing has to be installed several times, use a new adapter�
6.1.4 Installation to G 1 flangeThe process is sealed with the sealing ring at the back of the sensor�The sealing area at the flange must be flush with the tapped hole and have a surface characteristic of min� Rz = 6�3�
6.2 Units with process connection G ½ sealing coneFitting to the process connection: Installation using an adapter with metal-to-metal sealRecommended tightening torque: 30���50 Nm�
6.3 Use in hygienic areas to 3-AThe following applies to units with 3-A certification:
► Only use adapters with 3-A certification for the process connection�
► Do not install the unit at the lowest point of the pipe or tank (→ position 5) in order that the medium can run off the area of the measuring element�
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6.4 Use in hygienic areas to EHEDGThe sensor is suited for CIP (cleaning in process) when installed correctly�
► Observe the application limits (temperature and material resistance) according to the data sheet�
► Make sure that the sensor is integrated into the system according to EHEDG: ► Use self-draining installation� ► Only use process adapters permitted according to EHEDG with special seals required by the EHEDG position paper�
The gasket of the system interface must not be in contact with the sealing point of the sensor�
► In case of structures in a tank, the installation must be flush mount� If not possible then direct water jet cleaning and cleaning of dead spaces must be possible�
► Leakage ports must be clearly visible and must be installed facing downwards for vertical pipes�
1
Dd
L
► To avoid dead space adhere to the dimensions: L < (D - d)�
1: leakage port
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7 Electrical connectionThe unit must be connected by a qualified electrician�The national and international regulations for the installation of electrical equipment must be adhered to�Voltage supply to EN 50178, SELV, PELV / "supply class 2" to cULus�
► Disconnect power� ► Connect the unit as follows:
2-wire operation 3-wire operation
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2 1 L+BN1
WH2 OUT
BN
WH
BK
BU
4
1
3
2 OUT2
L+
L
OUT1
Colours to DIN EN 60947-5-2BK: black, BN: brown, BU: blue, WH: white
Operation as 2-wire unit Operation as 3-wire unitPin 2 = OUT
• analogue signal for temperature and diagnostics
= OUT2• analogue signal for temperature and
diagnostics
Pin 4 = OUT1• switching signal for diagnostics• IO-Link signal for temperature and
diagnostics
8 Parameter settingUsing an IO-Link capable parameter setting tool, the following options are available:
- Reading current process values� - Reading, changing and saving current parameter settings and transmitting them to other units of the same type�
- Read saved diagnostic information (→ 11)�
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► Connect the unit via the IO-Link interface to a PC or PLC with suitable parameter setting software�
IO-Link interface for connection of the sensor to a PC → www.ifm.com.
8.1 Adjustable parameters
Uni Setting of the standard unit of measurement: °C or °F�OU2 Configuration of the analogue signal: I = 4���20 mA or Ineg = 20���4 mAASP Analogue start point for measured temperature valueAEP Analogue end point for measured temperature valuedrW Drift warning threshold: If this value of the temperature deviation is exceeded, a
diagnostic message of the category "warning" is provided with setting [drEd] = OFF� °C/°F = Maximum permitted temperature deviation of both sensor elements from
the mean value� Setting range → 10.1�OFF = Drift warning deactivated�
drA Drift alarm threshold: If this value of the temperature deviation is exceeded, a diagnostic message of the category "alarm" is provided with setting [drEd] = ONdr or OFF� °C/°F = Maximum permitted temperature deviation of both sensor elements from
the mean value� Setting range → 10.1�OFF = Drift alarm deactivated�
drF Drift failure threshold: [drF] = drA + 3 K; if this value of the temperature deviation is exceeded, a diagnostic message of the category "failure" is provided�
• drF cannot be set but results from the setting of drA�• Setting drA = OFF automatically results in: drF = 8 K
ddr Delay of the drift detection�ddr = Time span (0�5���300 min) for which a drift value must be above the
warning threshold drW or alarm threshold drA so that a diagnostic signal is provided�
drEd Setting of the diagnostic cases (→ 5.3.3) for which diagnostic messages are provided� ON = Diagnostic cases of the category "failure" are signalled�ONdr = Diagnostic cases of the categories "alarm" and "failure" are signalled�OFF = Diagnostic cases of the categories "warning", "alarm" and "failure" are
signalled�
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FOU2 Response of the analogue signal when a diagnostic case is signalled: > Instead of the measured temperature value a defined current value according
to Namur NE43 is provided (On: 21�5 mA; OFF: 3�5 mA)dOU1 Response of the diagnostic switching output when a diagnostic case is signalled:
> Output opens / closes / pulsates depending on the category of the diagnostic case�
Setting options see Table 4 → 5.3.5P-n Switching logic for the diagnostic switching output: pnp or npn�HI Read max� value of the temperature measured in the process�LO Read min� value of the temperature measured in the process�Fnr Read fault number → 11 Fault correction�rES Restoring the factory settings�
It is recommended to note down your own settings before carrying out a reset (→ 12 Factory setting)�
9 OperationWhen the supply voltage is applied, the unit is in the RUN mode after a power-on delay time of 8 s (= normal operating mode)� It carries out its measurement and evaluation functions and provides output signals according to the set parameters�
10 Technical dataTechnical data and scale drawing at www�ifm�com�
10.1 Setting range for drW / drAMedium temperature Setting range-10���100 °C 14���212 °F 0�2���5 K-25���0 °C -13���32 °F 0�3���5 K> 100 °C > 212 °F x...5 K (→ chart)
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0,2
0,3
0,4
0,5
0,6
0,7
0,8
105
100
110
115
120
125
130
135
140
145
150
155
160
[K]
[°C]
221
212
230
239
248
257
266
275
284
293
302
311
320 [°F]
1
2
1: x = minimum value for drW and drA2: Medium temperature
If the value that has been set for drW or drA is lower than the value x, the sensor will change it automatically to the value x� In case of operation in gaseous media the value should be greater than 0�35 °C / 0�6 °F�
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11 Fault correctionIn case of faults or anomalies:
► Connect the unit to a PC and read [Fnr] via the IO-Link interface� ► Read [Fnr]�
Fnr Type of fault Corrective measures0 No fault, no anomaly occurred� -/-20 Internal malfunction in the sensor
electronics� ► Replace the unit�
21 Backup function of the sensor activated, e�g� a sensor element has failed (diagnostic case 4 → 5.3.3)
► Replace the unit� ► Continue measurement with only one sensor element (backup function):
- In 2-wire operation set [drEd] = ON so that the measured temperature value can be continued to be transferred� Then the analogue output only provides diagnostic cases of the category "failure"�
- In 3-wire operation all diagnostic cases can be signalled via the diagnostic switching output except those used for drift monitoring (diagnostic cases 1, 3, 7 → 5.3.3)�
30 Wiring fault ► Check wiring�42 Analogue signal 21�5 mA (FOU2 = On)
or 3�5 mA (FOU2 = OFF) > The switch point is clearly outside
the measuring range�
► Check measuring range� ► Adapt [ASP] value and [AEP] vaule to the operating conditions�
71 Detected sensor drift exceeds warning level [drW]
First indication of drift detected� ► Check whether the parameter [drW] is programmed correctly�
► Prepare replacement of the unit�72 Detected sensor drift exceeds alarm
level [drA]Drift exceeds alarm threshold�Temperature measurement with reduced accuracy possible�
► Check whether the parameter [drA] is programmed correctly�
► Replace the unit�
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Fnr Type of fault Corrective measures91 Supply voltage outside the operating
voltage range� ► Check the supply voltage; ensure a correct voltage supply�
92 Operating temperature of the electronics outside the specified range�
► Check the temperature of the upper part of the unit�
► Adhere to the specified temperature range�
100 Error during parameter setting via IO-Link (set value of a parameter outside the valid range)�
► Repeat parameter setting with admissible parameter values or make a reset (reset all parameters to the factory setting)�
SP = analogue start point; AEP = analogue end point
12 Factory setting
Parameter Factory setting User settingOU2 IASP 0 °CAEP 150 °CdrW 0�2 °CdrA 0�5 °Cddr 30 mindrEd OndrdOU1 nc+FOU2 Onp-n PnPUni °C