User Documentation

Functional specification of the safety functions
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6. Functional specification of the safety functions
Conversion of current signals (0...20 mA or 4...20 mA), RTD sensor signals or thermocouple sensor signals
from hazardous areas to a 4...20 mA current output signal, in two separately configurable channels, within
specified accuracy. For RTD sensors, cable resistances of up to 50 Ω per wire can be compensated if a 3- or
4-wire connection is configured. For thermocouple sensors, cold junction temperature errors can be
compensated, either by an internally mounted temperature sensor, or by an accessory connector with a built-
in temperature sensor. The selection of cold junction compensation (CJC) measurement must be done and
verified by the end user (refer to chapter 18 "Connection diagram" on page 38).