Selecting The Test Mode; Testing The Digital I/O Interface - ABB RELION 620 Series Operation Manual

Section 8
Commissioning
8.6.1
8.6.2
136

Selecting the test mode

The test mode can be activated using the LHMI. The green Normal LED is flashing to
indicate that the test mode is activated.
The Normal LED also flashes if the protection relay detects a diagnostic
failure. Check the test mode setting and the protection relay's IRF alarm
contact status to find the reason for the failure.
The test mode is useful for simulated testing of functions and outputs without providing
current inputs.
1.
Select Main menu/Tests/IED test/Test mode and press
A071154-ANSI V2 EN
Figure 91: Entering test mode
2.
Select the test mode status with
3.
Press to confirm the selection.
If the test mode is not cancelled, it remains on and the Normal LED
remains flashing.

Testing the digital I/O interface

To activate or deactivate, for example, a digital output:
or .
1MAC456939-IB D
.
620 series ANSI
Operation Manual