The STL4896 safety temperature limiter is used where ever thermal processes must be monitored and the system must be transferred into a safe operational state in case of fault. If the permissible temperature limit value is reached, or if a fault occurs within the permissible temperature range on the monitoring equipment (sensor open, sensor short-circuit, failure of a component part in the device, fault in the software, failure or inadmissible value of the supply voltage etc.), the STL4896 switches off without delay.

The alarm contact is activated, the LED ALARM on the front panel and the back-lighting of the display light up, and the error cause is indicated as plain text on the display. In addition, there is a 24 V DC signal present on the terminals 16-17 for an external alarm signal. Alternatively, the device can be reset using an external contact. In addition, the STL4896 has an configurable analog output with up or downscaling function, as well as a pre-contact.

●DIN EN14597 Safety Temperature Limiter Operating modes STB, STW, ASTB (double fault) ●DIN EN 61508 certified, SIL2
●DIN EN ISO 13849 certified, PL d
●1 Relay for safety-relevant temperature limit, forcibly guided
●1 Relay for pre-alarm
●Analogue output 0/4... 20mA; 0/2... 10 VDC
●Memory function for error message
●Operator lock (password protection)
●Contact input for external reset
●24V DC signal for external alarm message

Parameter Name	Parameter Value
Display	with LCD display, analog with LCD display analog
Type	thermoelectric programmable multi-channel
Use	for process monitoring, industrial for process monitoring industrial
Other characteristics	safety configurable
Maximum temperature	Max.: 1,600 °C (2,912 °F)Min.: -150 °C (-238 °F)
Maximum temperature (°C)	-150 - 1600