Armature Circuit Interface; Field Circuit Interfaces Sdcs-Bab-F01 And Sdcs-Bab-F02 (H1 - ABB DCS880 series Hardware Manual

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Armature circuit interface

The function for the armature circuit interface consist of:
– Firing the armature bridge of 6 or 12 thyristors.
– High ohmic measurement of DC and AC voltages.
– Residual measurement current of armature circuit to ground
= 5 mA at 500 V supply (
– Interface for the current transformers for current measurement.
– Snubber circuit for the thyristor protection together with R1 on the heatsink.
– Interface for heatsink temperature measurement with a PTC.
– Fuses for overvoltage protection and field circuit.
Field circuit interfaces SDCS-BAB-F01 and SDCS-BAB-F02 (H1 ... H4)
The OnBoard field exciter is located internally. The firing pulses are synchronized using the mains
circuit L1, L2, L3 and the SDCS-CON-H01. The pulses are amplified on the SDCS-PIN-H01.
The hardware structure is a three phase half controlled bridge supplied directly from the mains U1, V1 ,
W1 via fuses F100, F101, F102.
If the OnBoard field exciter is not needed it can be deselected in the firmware.
The field circuit interface consists of:
– Firing the three phase half controlled field bridge.
– Measuring the field current on the DC side. The scaling is automatically selected using the rated
motor field current.
– The snubber circuit is shared with the armature bridge.
– Fuses F100, F101, F102 are used for cable and motor field winding protection.
– Size H3 and H4 converters for 600 V are always delivered without OnBoard field exciter.
– Size H5 converters do not use the field circuit interface on the SDCS-PIN-H01
Ratings OnBoard field exciter
AC voltage range
AC insulation voltage
Frequency
AC input current
Cables
Size
DC output current
max. cross sectional area
min. cross sectional area
Technical data


1 M ).
110 ... 525 V
600 V
50 Hz / 60 Hz
< Field current
H1
6 A
6 mm²
AWG 10
1 mm²
AWG 16
3ADW000462R0101 DCS880 Hardware Manual e a
H1 H2
12 A 18 A
6 mm² 6 mm²
AWG 10 AWG 10
2.5 mm² 4 mm²
AWG 13 AWG 11
H3 H4
25 A 30 A
6 mm² 6 mm²
AWG 10 AWG 10
6 mm² 6 mm²
AWG 10 AWG 10