ABB 5SGY3545L0003 IGCT control module
Technical data
Auxiliary supply voltage XAUX (X99)
Input circuit XAUX (X99)
Features a hardware filter
and a voltage limitation
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 current measurement of armature circuit to ground
= 5 mA at 500 V supply ( 1 M).
– 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
Power supply board SDCS-POW-H01 (H6 ... H8)
The SDCS-POW-H01 is designed for DCS880 converter modules and is mounted on the electronic tray. It is used
for sizes H6, H7, H8 and the rebuild kit DCS880-R.
The SDCS-POW-H01 generates all necessary DC voltages for the SDCS-CON-H01 and all other electronic boards.
The input voltage is automatically detected and set to either 230 VAC or 115 VAC.
Technical data
Auxiliary supply voltage XAUX (X99)
Frequently switching ON and OFF increases the inrush current.
Input circuit XAUX (X99)
Supply voltage 115 VAC 230 VAC 230 VDC
Tolerance -15 % / +10 % -15 % / +10 % -15 % / +10 %
Frequency 45 Hz - 65 Hz 45 Hz - 65 Hz -
Power
consumption
120 VA 120 VA 120 VA
Power loss 60 W 60 W 60 W
Inrush current 20 A / 20 ms 10 A / 20 ms 15 A / 20 ms
Recommended
fusing
6 AT 6 AT 6 AT
Mains buffering min. 30 ms min. 300 ms min. 150 ms
Powerfail 95 V 95 V 100 V

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
Cables
Layout
SDCS-BAB-F01 for module sizes H1 and H2:
AC voltage range 110 ... 500 V (IEC) / 525 V (UL)
AC insulation voltage 600 V
Frequency 50 Hz / 60 Hz
AC input current < Field current
Size H1 H1 H2 H3 H4
DC output current 6 A / 12 A 12 A 18 A 25 A 30 A
max. cross sectional area 6 mm²
AWG 10
6 mm²
AWG 10
6 mm²
AWG 10
6 mm²
AWG 10
6 mm²
AWG 10
min. cross sectional area 1 mm²
AWG 16
2.5 mm²
AWG 13
4 mm²
AWG 11
6 mm²
AWG 10
6 mm²
AWG 10