How To Change Binary Input/Output Signals Using Forcing; Forcing By Using Lhmi - ABB Relion 670 Series Commissioning Manual

Section 9
Testing IED operation
9.8.3

How to change binary input/output signals using forcing

Once the IED is in IED test mode, the LHMI/PCM600 menus can be used to control input/output signals
freely.
9.8.3.1

Forcing by using LHMI

Editing a signal value directly
• Edit the input/output value directly to select the desired logical level, by doing following:
1.
2.
3.
When navigating away from a LHMI forcing menu for an I/O board, the user is prompted to either leave
the signals forced, or to revert all of them back to the unforced state.
64
Select the value line of the desired signal, see figure 10.
Press the Enter key to edit the value.
IEC15000021 V1 EN-US
Figure 10: Value line of the desired signal
Use the up/down arrows on the LHMI to change the signal value or the appropriate menu in
PCM600.
The status of the signal changes automatically to Forced (i.e. there is no need to set the status
to Forced manually).
On the LHMI, these edit changes have immediate effect. This means that the value
changes directly when the up/down arrow is pressed (i.e. there is no need to press the
Enter key to effectuate the change).
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