BENSHAW RSi-030-SG-4B, Service Manual

Page: 82 / 116

Connector ID Terminals Description
Main SMPS Board
CN11 (pins 1 & 2)
P6 - G6 6 VDC from Fan Board, CN2. Used to power Input SCR's gate circuit.
continued
CN13 (pin 1 - 5) DCN - DCP DC Bus Voltage into board
CN13 (pin 2 - 3) DCNF - FUSE1 DC Bus Fuse Indicator (NC)
CN13 (pin 4) Not Used
CN12 (pins 1 & 2) K3, G3 500 - 700 HP only, Second set, SCR Gate signal, T phase
CN12 (pins 3 & 4) K2, G2 500 - 700 HP only, Second set, SCR Gate signal, S phase
CN12 (pins 5 & 6) K1, G1 500 - 700 HP only, Second set, SCR Gate signal, R phase
CN14 (pins 1 & 2) K3, G3 SCR Gate signal, T phase
CN14 (pins 3 & 4) K2, G2 SCR Gate signal, S phase
CN14 (pins 5 & 6) K1, G1 SCR Gate signal, R phase
CN7 (pins 1 & 2) NTC Thermistor Input
LED1
DC Bus Power
LED2 Fan Bd. Control Relay, RLY2 energized (CN5, pins 24P1 & 24P-A closed), Parameter
Controlled, See I/O-84
LED3
15 VDC for IGBT Gate Drive Circuits
LED4
SCR Gates "ON" LED (6VDC)
LED5 Fan Bd. Control Relay, RLY3 energized (CN6, pins 24P1 & 24P-B closed), Parameter
Controlled, See I/O-84
LED6 Fan Bd. Control Relay, RLY4 energized (CN16, pins 24P1 & 24P-C closed), Parameter
Controlled, See I/O-84
J1 (switch) 280/315 Switch positions are labeled 280 and 315. 280kW is 400 HP (and below), 315kW is 500
HP (and above). The larger HP's (500 and above) have a heat sink thermal switch(s)
plugged into terminal CN18. The smaller HP's do not. The J1 switch position
determines if the thermal switch is monitored or not. The 280 position bypasses the
thermal switch input, the 315 position puts the thermal switch in series with the fan
monitoring connectors, CN8, CN9 & CN15. When the thermal switch opens (90°C), the
VFD still trips on a Fan Lock Fault as the thermal switch is part of the Fan Monitoring
series circuit.
Pub. # 890046-10-00
Dec. 2015
Section 3, Page 20 of 20