6 Safety Manual
54
11 Restore line to the measurement input connection 51. Both the display and the
current meter at the analog output must display values that correspond to the in-
put signal present close to the measuring range end. Relay must have picked up.
The test piece must be in SIL operation and/or have a SIL configuration.
Disconnect the line of the current meter at connection 42(+). The test piece must
signal an error after approx. 5 s. Measure the voltage between the connections
22(+) and 21(-), as well as between 22(+) and 23(-) using the voltage meter. The
measured voltage value between 22 and 21 must be < 0.1 V, and must be 22.8 V to
25.2 V between 22 and 23.
Verification that in the event of
interruption of the output signal
path (current signal), the internal
test for a correct output signal
identifies the interruption of the
signal path and signals it. Relay
drops out.
12 If active, deactivate SIL operation of the test piece.
Configure test piece for connection to the thermocouple sensor type, NiCr-Ni, type
'K', internal cold junction, and configure analogue output to current signal (4 mA to
20 mA; error signal: negative signaling).
Connect current meter between connection 54(+) and 51(-) and measure the cur-
rent. No current must be measurable (~0 µA).
Verification that the power
source is switched off for the
RTD temperature probe in the
thermocouple configuration.
13 Connect short-circuit jumper between connection 52(+) and connection 51(-).
Check whether the temperature displayed by the display corresponds to the ambi-
ent temperature with a deviation of ± 5 °C.
Verification of proper function of
the acquisition of the cold junc-
tion temperature for thermocou-
ples.
14 Configure test piece for connection to the double thermocouple sensor type, NiCr-
Ni, type 'K', internal cold junction, and configure analogue output to current signal
(4 mA to 20 mA; error signal: negative signaling).
Test the resistance between the following connections with an ohmmeter:
53 to 51: display < 5 Ω
Verification of proper function of
the earthing switch for the sec-
ond thermocouple
Step Action Please note
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