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

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Part #
HP Where Used Description
Main SMPS Board PC-100065-00 50 The board contains circuits for Fan control, Input SCR control, IGBT Gate Firing signals, Current
Transformer Feedback, DC Bus Voltage/DC Bus Fuse monitoring and IGBT temperature monitoring.
Receives DC Bus voltage from capacitor bank. Creates (5) DC power supplies.
15 VDC (P15-G15) dedicated to IGBT Gate Power.
+/-15 VDC (P15A, N15A - 24G) for Control Bd. I/O.
15 VDC (15P-15N) for component power.
24 VDC (24P-24G) for Control Bd. I/O.
5 VDC (5P-5G) for component power.
PC-100066-00 60
PC-100067-00 75
PC-100068-00
PC-100069-00 100
125
Fuse, 1A, 600V,
100Kaic. Fast Acting FU-603 All
Connector ID Terminals Description
CN10 (pin 1 - 5) DCN - DCP DC Bus Voltage into board
CN10 (pin 2 - 3) DCNF - FUSE1 DC Bus Fuse Indicator (NC)
CN10 (pin 4) Not Used
CN2 (pin 3) 24G GND (pins 2 & 3 tied together)
CN2 (pins 1 & 2) 24P - 24G 24V supply to Control Board terminal CN6 (pins 1 & 2)
CN2 (pins 4 & 5) P15A - N15A pos.15V and neg. 15V supply to Control Board terminal CN6 (pins 4 & 5)
CN30 (pins 1 - 40) 40 pin connector Ribbon Cable out to IGBT Driver Board
CN40 (pins 1 & 2) Fan_24P1 & Fan 24P Fan Control Relay RLY2, contacts close to send 24VDC back to Fan board at CN6. Parameter Controlled,
See I/O-84.
CN43 (pins 1 & 2) G6 - P6 6 VDC from Fan board CN2, Used to power Input SCR's gate circuit.
CN44 (pins 1 & 2) K3, G3 125 HP only, Second set, SCR Gate signal, T phase
CN44 (pins 3 & 4) K2, G2 125 HP only, Second set, SCR Gate signal, S phase
CN44 (pins 5 & 6) K1, G1 125 HP only, Second set, SCR Gate signal, R phase
CN45 (pins 1 & 2) K3, G3 SCR Gate signal, T phase
CN45 (pins 3 & 4) K2, G2 SCR Gate signal, S phase
CN45 (pins 5 & 6) K1, G1 SCR Gate signal, R phase
CN7 40 pin edge connector Interface to Control Board
LED1 DC Bus Power
LED2 Fan Control Relay, RLY2 energized (CN40, pins 1&2 closed), Parameter Controlled, See I/O-84
LED3 SCR Gates "ON" LED (6VDC)
Pub. # 890046-10-00
Dec. 2015
Section 3, Page 11 of 20