110 Option
Phase order check for measuring circuit
1. Disconnect the input cables from -X117:1, -X117:2, -X118:1, -X118:2;
2. Remove the bridge between -X117:2 -X117:3, -X118:2 -X118:3 if available
(SBP=0001, PTs provided by ABB);
3. Connect the test circuit as above, two single phase breakers (-Q1 and -Q2) are
proposed to be added between 220Vac and terminal -X107(or-X117) and -X108 (or -
118) for safety and easy controlling;
4. Power on +24Vpower supply of drive and make sure control power is OK for Rsyc-01
board (-A6141:J1);
5. Close -Q1 and check that indication lamp of SYNC is off and BCON DI6 is low;
6. Close -Q2 and check if the indication lamp of SYNC is on and BCON DI6 is high (ON
means phase sequence is correct for both measurement loop from -X107 & -X108 to
Rsyc-01 board).
7. If SYNC is not ON, check phase sequence of the cable connection between -X107(or
X118), - X108(or X118) and Rsyc-01 board, correct the cable connection and redo the
test. Other failure modes include: fuse broken (-X107, -X108, -X117, X118 and -
X109), phase sequence of isolating transformer (-T6141 and -T6142) is not correct,
this can be conducted and distinguish step by step;
8. If SYNC is ON for Rsyc-01 board but DI6 is low for BCON, then check the cable
connection between Rsyc-01 board and BCON following schematic;
9. Recover the wiring after test is successfully finished.
SYNC indication lamp position
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