GE DS200TCPDG1A Ethernet interface card

The solution using PR120/K signaling unit: wiring logic REF542 PLUS unit has many input and output contacts. In particular, BI14 binary input and B07 binary output can be used to block the protection functions between interlocked REF542 PLUS (Figure 8). The input is used to receive the block signal, and the output to send the signal. The wiring diagram of the inputs/outputs is shown in the scheme below, where with AR1 and AR2 two REF542 PLUS releases are indicated: Figure 8 (Wiring of REF542 Plus for the management of the Zone Selectivity)

As already pointed out

the binary inputs can be used for voltages in the range from 48 to 240V DC. By analyzing the direct current performances (reported in the table of Figure 9) of the contacts of PR120/K module (also valid for PR021/K) it is possible to verify that the module is suitable as interblock of REF542 PLUS.Here is an example of wiring using the contact K51/P1 of PR120/K module at a voltage of 48 V DC (this can be obtained analogously also with PR021/K module). Figure 10 (example of interblock obtained by wiring a PR120/K module with REF542 Plus)

To set properly K51/p1 contact

it is possible to use the test and signaling unit PR010/T or the programs SD-Pocket (for PDA) or SD-TestBus (for PC); to send the block signal to the MV product, it is necessary that the contact K51/p1 is set as follows: - reference event: “S timing” - status: NO (normally open) - latching function: not selected - time-delay upon closing: 0.0 To guarantee a correct functioning of the zone selectivity with a MV device, it is necessary that the minimum opening time of the MV circuit-breaker is not lower than 120 ms (for the protection against phase faults) or 150 ms (for the protection against earth faults)

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----------------------Ruichang Mingsheng Automation Equipment Co., Ltd----------------------

PLC module, programmable controller, CPU module, IO module, DO module, AI module, DI module

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Ethernet module, motion control module, analog input module, analog output module, digital input module, digital output

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