6 Safety Manual
53
8 Set limit value of the relay (function AF7) in the middle of the configured measuring
range. Connect positive terminal of a voltage source (24 V ±5 %, 500 mA) to the
terminal connection 22 via a resistor (240 Ω, 5 W).
Connect the ground connection of the voltage source with the relay contact con-
nections 21 and 23.
Simulate an input signal close to the measuring range start using a resistance de-
cade, and verify whether the specified signal and the transformed analog output
signal correspond to the value expected (display value, current meter).
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 terminals 22 and 21 must be < 0.1 V, and
must be 22.8 V to 25.2 V between terminals 22 and 23.
Verification that the relay has not
switched below the configured
limit value.
9 Simulate an input signal close to the measuring range end using a resistance de-
cade, and verify that the input signal corresponds to the value expected (display
value). Measure the voltage between the connections 22(+) and 21(-), as well as
between 22(+) and 23(-) using the voltage meter. The measured voltage value be-
tween terminals 22 and 21 must be 22.8 V to 25.2 V, and be < 0.1 V between termi-
nals 22 and 23.
Verification that the relay has not
switched above the configured
limit value.
10 Disconnect line to the measurement input connection 51. The test piece must sig-
nal an error (display and LED). The current meter must display a value ≤ 3.6 mA as
an analog output signal. 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.
The relay therefore drops out.
Verification in the event of a mal-
function that the analog output
signal corresponds to failure in-
formation A, NE43, and the relay
has dropped out.
Step Action Please note
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