Owner manual

P-8 Overview
PowerFlex SCR Bus Supply User Manual
Publication 20S-UM001G-EN-P
Figure P.4 1000A SCR Bus Supply Slave Unit Schematic Diagram
The primary electrical components for the 1000A SCR Bus Supply Slave
Unit are:
NOTE: There is no DC output fuse protection in the 1000A SCR Unit.
>°C
F12
F6
F2
F1
F4
F5
F3
F7-11
L1 L4L5L3L2
X1
GND
12
0
1
4
115
2
5
6
8
7
9
10
11
3
2
V3
45
3
2
V5
45
3
2
V1
45
3
2
V4
45
3
2
V6
45
3
2
V2
45
L1
L2
L3
PE
+
-
+
+
-
X3
X4
X6
2
X6
1
1
8
7
5
4
2
X5
5
4
3
2
6
1
3
4
5
6
7
9
12
11
10
8
1
2
7854126543X2
7
8
9
10
11
12
1
2
3
4
5
6
1
5
M
N
GND
L1
+DC
-DC
Gate Driver Board
From Gate
Driver X6
on the Master
(Figure P.3 or
previous Slave)
To Gate
Driver X4
on the next
Slave
Item Description
Six-Pulse, Full-Wave, 3-Phase SCR Bridge Rectifier Unit connected to the line input and DC
Bus output terminals through semi-conductor protection fuses with trip indicator switches.
Bus Supply Overtemperature Sensor located on the heat sink for thermal protection of the
SCR bridge rectifier.
RC snubber circuit routed to the three input phases through semi-conductor protection
fuses with trip indicator switches.
MOV snubber circuit routed to the three input phases.
Gate Driver Board. The DC power supply is connected to the customer-supplied 115V AC
Power Supply.
Cooling Blower connected to a customer-supplied 115V AC Power Supply. The customer’s
controls must, at a minimum, command the blower to run whenever contactor K1 is enabled.
Connection Cable (1 m) connects the gate firing pulses from the Master to the first Slave or
between any two Slaves (maximum 4).