Selecting Ied Test Mode; Testing And Commissioning Support On Local Hmi - ABB Relion REX640 User Manual

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4.5.2
4.5.3
BIO-Tester Relion® REX640
User Manual
Supply to the LHMI is always 48 V DC.

Selecting IED test mode

The test mode can be activated using the LHMI. The Home button is flashing green at
low frequency to indicate that the test mode is activated. By default, the test mode can
only be changed from the LHMI. Activation by remote client is possible, see the
REX640 Technical Manual.
The test mode is useful for simulated testing of functions and outputs without
providing current inputs.
• Select Testing and Commissioning/Test mode/IED test to activate the internal
fault test.
GUID-05CFE41C-A635-4032-9484-3854B3403D70 V1 EN
Figure 11: Selecting IED test mode
If the test mode is not cancelled, it remains on and the Home button
remains flashing.

Testing and commissioning support on local HMI

The LHMI supports the engineer during the relay's testing, commissioning and
troubleshooting activities. The information, traditionally accessible through different
BIO-Tester Relion® REX640
Section 4
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