Inspecting The Wiring - ABB Relion SAM600-IO Operation Manual

Section 8
Troubleshooting
• Check that the function is on.
• Check that the correct setting group (1 to 6) is activated.
• Check if the function is blocked.
• Check if the IED is in the test mode.
• Check the connections to trip and disturbance recorder functions.
8.3.2.1

Inspecting the wiring

• Check the actual state of the connected binary inputs.
•
•
• Measure output contacts using the voltage drop method of applying at least the minimum
contact load given for the output relays in the technical data, for example 100 mA at 24 V
AC/DC.
A
GUID-BBAEAF55-8D01-4711-A71D-BBC76B60BA3D V1 EN-US
Figure 39:
1 Contact current
2 Contact voltage drop
3 Load
4 Supply voltage
• To check the status of the output circuits driving the output relay via the LHMI, select Main
menu /Test/Binary output values and then navigate to the board with the actual binary output
to be checked.
• Test and change the relay state manually.
56
In LHMI, select Main menu /Test/Binary input values . Then navigate to the board with
the actual binary input to be checked.
Check the actual state of the connected binary inputs through PCM600, see PCM600
documentation.
Output relays, especially power output relays, are designed for breaking high
currents. Due to this, layers of high resistance may appear on the surface of the
contacts. Do not determine proper functionality of connectivity or contact
resistance by measuring with a regular hand-held ohm meter.
V
1
4
Testing output contacts using the voltage drop method
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3
Switchgear control unit SAM600-IO
1MRK 500 131-UEN Rev. C
GUID-665B75A6-A074-4A03-ADF1-3D0FAD198E61 v8
Operation manual