Forcing Of Binary I/O Signals For Testing; Forcing Concept; How To Enable Forcing; Enable Forcing By Using Lhmi - ABB RELION REG670 Commissioning Manual

Section 11
Testing IED operation
• Verify operating levels (trip) and timers.
• Verify alarm and blocking signals.
• Use the disturbance handling tool in PCM600 to evaluate that the protection function has
received the correct data and responded correctly (signaling and timing).
• Use the event viewer tool in PCM600 to check that only expected events have occurred.
11.8

Forcing of binary I/O signals for testing

11.8.1

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.
11.8.2

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 LHMI/PCM600 menus that relate to forcing will not have any effect on the input/
output status due to safety reasons.
11.8.2.1

Enable forcing by using LHMI

1. Enable IED Testmode by setting
mode TESTMODE:1.
IEC15000029 V1 EN-US
2. Exit back to the root menu.
3. Select
Once the IED is in test mode the yellow Start LED starts to blink.
90
Be observant that forcing of binary inputs and outputs on an IED, with
inappropriate setup, can result in potential danger.
Yes in the save dialogue box.
IEDTestMode to On under Main menu/Test/IED test
1MRK 502 067-UEN B
GUID-3FD8C676-10E5-432A-8CD5-4643299AD794 v1
GUID-50280F59-A98C-4E48-AB6D-2B4C138943DD v1
GUID-41F7C636-75BC-42EF-A955-4BD9E347619E v1
Commissioning manual