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1MRK511447-UEN Rev. E
The Function test modes menu is located in the local HMI under Main menu/Test /Function
test modes.
2.
Browse to the function instance that needs to be released.
3.
Set parameter Blocked for the selected function to No.
8.6
Forcing of binary input/output signals for testing
8.6.1
Forcing concept
Forcing of binary inputs and outputs is a convenient way to test wiring in substations as well as
testing configuration logic in the IEDs. Basically it means that all binary inputs and outputs on the IED
I/O modules (BOM, BIM, IOM & SOM) can be set to a value (i.e active or not-active), selected by the
user, while the IED is in test mode. For inputs, this is true regardless of the actual signal voltage
present on the input. For outputs, any output relay can be forced to be active or not, regardless of the
current requested state of the output in the IED logic configuration.
8.6.2
How to enable forcing
To enable forcing, the IED must first be put into IED test mode. While the IED is not in test mode, the
PCM600 menus that relate to forcing will not have any effect on the input/output status due to safety
reasons.
8.6.2.1
Enable forcing using TESTMODE function block
•
Use the TESTMODE function block, appropriately configured in PCM600/ACT.
It may be convenient to control the input on mentioned component during commissioning to quickly
and easily enter IED test mode.
8.6.3
How to change binary input/output signals using forcing
Once the IED is in IED test mode, the PCM600 menus can be used to control input/output signals
freely.
8.6.3.1
Forcing by using PCM600
The forcing is accomplished by entering a forcing session. Within such a session, multiple signals on
multiple I/O boards may be edited and changed at the same time and has no effect on the IED. Once
the user is satisfied with the forcing setup, then all the changes can be effectuated simultaneously
towards the IED, potentially changing inputs and outputs on multiple I/O boards at the same time. It
is also possible to abort this operation (described in step 6 below) and to
1.
Right click on the IED in the plant structure and select Signal Monitoring.
2.
Click on the List View tab.
3.
Click Forcing Session in the menu IED/Start Forcing.
Switchgear control unit SAM600-IO
Commissioning manual
Be observant that forcing of binary inputs and outputs on an IED, with inappropriate
setup, can result in potential danger.
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Section 8
Testing IED operation
GUID-3FD8C676-10E5-432A-8CD5-4643299AD794 v2
GUID-50280F59-A98C-4E48-AB6D-2B4C138943DD v2
GUID-DD17B7D6-516F-4561-9D30-906B968EAFE0 v2
GUID-7DF9FAF1-68B1-49AF-9DE4-2A8D6F6FAEFE v2
GUID-E9D0DAE6-7A86-4FF9-943E-42039015D05B v2
undo all
forcing.
41
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