Service Settings For Transceiver 21-216; Earthing - ABB Relion 670 Series Application Manual

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1MRK 505 382-UEN E

IEC10000062 V1 EN-US

Figure 74: IED set as a slave

5.5.5.2

Service settings for transceiver 21–216

IEC07000256 V1 EN-US

Figure 75: Transceiver 21–216

Only one setting is required for transceiver 21–216. It has to be set to external clock. Rotary

switch on the front panel pointing to position 0 indicates that external clock is selected. If

back-to-back testing is to be performed, one transceiver 21-216 has to be set as master by

setting the rotary switch to position 2 (overrides settings of jumpers 8 and 9). Clock

synchronization configuration using the rotary switch can be done on the fly.

5.5.6

The recommended earthing method is direct earthing. With earth loop problems, soft earth

method can be beneficial (see Figures

Communication set-up, 670/650 series

Application Guide

and 77).

Section 5

Communication set-up

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GUID-F03C51FF-418F-4761-BF4C-73833D10804D v1

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Relion 650 series