ABB RELION RET670, Руководство по вводу в эксплуатацию, Страница: 108 / 328

IEC15000026 V1 EN
This commits the values to the IED and exits the editing session.
7. Click Cancel to abort the changes and revert back to actual IED values.
IEC15000032 V1 EN
Regardless if the forcing changes are commited or canceled, the forcing is
still active.
To force more signals, click the button Start editing signal value for forcing again.
10.8.4 How to undo forcing changes and return the IED to normal
operation
Regardless of which input/output signals have been forced, all forced signals will return
to their normal states immediately when the IED is taken out of test mode.
When the forcing is removed by exiting from IED test mode, both input
and output signals may change values. This means that logic input signals
may activate functions in the IED and that output relays may change state,
which can be potentially dangerous.
10.8.4.1 Undo forcing by using TESTMODE component
• If the IED test mode was entered through the test mode function block:
1.
Deactivate the control input on that block.
This immediately undoes all forcing, regardless of how it was accomplished and
disabled all the way to force signals.
10.8.4.2 Undo forcing by using LHMI
• If the IED test mode was enabled to using the LHMI:
Section 10
1MRK 504 165-UUS -
Testing IED operation
102 Transformer protection RET670 2.2 ANSI
Commissioning manual