11 Fault correction ������������������������������������������������������������������������������������������������21 12 Factory setting �������������������������������������������������������������������������������������������������22 1 Preliminary note Technical 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�...
• 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 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 function The unit converts the measured temperature value into a temperature-proportional analogue signal�...
Page 7
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)� •...
5.3 Diagnostic function By 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 (→...
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�...
5.3.3 Diagnostic cases Diagnostic messages Diagnostic case Warning Alarm Failure ● 1 Drift warning threshold [drW] exceeded Limit temperature internal electronics ● exceeded (+125°C) ● 3 Drift alarm threshold [drA] exceeded Failure of one of the two sensor ● elements Measured temperature value far ●...
Diagnostic messages Diagnostic cases [drEd] Warning Alarm Failure (→ 5.3.3) ● = 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"�...
Page 12
Diagnostic messages Diagnos- tic cases [drEd] Output Warning Alarm Failure (→ 5.3.3) ● = ONdr Analogue output 6���9 ● ● Switching output* 3���9 ● = OFF Analogue output 6���9 ● ● ● Switching 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�...
— Measured value of the remaining sensor element continues to be provided� For the failed element, "NoData" is displayed instead of the measured value� "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.
► 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�...
6.1.3 Installation using a process adapter with metal-to-metal seal Order no� E337xx / E338xx A 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 flange The process is sealed with the sealing ring at the back of the sensor�...
6.4 Use in hygienic areas to EHEDG The 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: ►...
7 Electrical connection The 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� ►...
► 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 Setting of the standard unit of measurement: °C or °F�...
8 s (= normal operating mode)� It carries out its measurement and evaluation functions and provides output signals according to the set parameters� 10 Technical data Technical data and scale drawing at www�ifm�com� 10.1 Setting range for drW / drA Medium temperature Setting range -10���100 °C...
Page 20
[°C] [°F] 1: x = minimum value for drW and drA 2: 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�...
Page 21
11 Fault correction In 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 measures No fault, no anomaly occurred� Internal malfunction in the sensor ►...
Page 22
Fnr Type of fault Corrective measures Supply voltage outside the operating ► Check the supply voltage; ensure a voltage range� correct voltage supply� Operating temperature of the electronics ► Check the temperature of the upper outside the specified range� part of the unit� ►...
Need help?
Do you have a question about the TAD 81 Series and is the answer not in the manual?
Questions and answers