Rockwell Automation 7703E Medium Voltage SMC OEM Components - 10-15 kV - Manual (Page 28)

28 Rockwell Automation Publication 7703E-IN001E-EN-P - July 2014
Chapter 4 Control Component Installation
Figure 14 - Interface Board Layout
ATTENTION: Do not touch or bend the connectors on the Interface Board when
handling it. Damage to the connectors may result in loss of communication
signals from the MV SMC Flex to other components.
Phase A
Fiber Optic Transmitter
sends gate signals
to multiplexer
Phase B
Fiber Optic Transmitter
Phase C
Fiber Optic Transmitter
SW3: Used to
defeat temperature
feedback channels
Temperature Feedback
Fiber Optic Receivers
SW2: When ON (up), provides
test pulses to gate driver circuits.
Must be OFF (down)
for normal operation
LED (Red) ON
when test pulses on
LED (Yellow) ON
when Phase A
gate signal active
LED (Yellow) ON
when Phase B
gate signal active
LED (Yellow) ON
when Phase C
gate signal active
TP4: Phase A
gate signal
TP11: Phase B
gate signal
TP13: Phase C
gate signal
TP15: Common for
Gate/Pulse TPs
TP8: Common for
Gate/Pulse TPs
LEDs (Green): ON when
signal present at temperature
feedback fiber optic receivers
Ribbon connectors to connect to
SMC Flex Control Module
(underneath control module)
SMC Flex Control Module
Current feedback
test points
Ribbon connector
to Voltage
Sensing Board
Current loop
power supply
sensor input
TB5: Current
Transformer
Connections
TP18, 19, 20:
Power Supply
test points
Replacement
Part Number
1. ICOM is the common connection for Gate and Pulse test points.
2. VCOM is the common connection for Current and Voltage feedback test points.
Do not connect to earth ground. Do not connect ICOM and VCOM together,
either directly or through test probes, meter or scope common.
Notes:
Control Power
110…240V AC
Power out
to SMC Flex
Serial
Number
Voltage feedback
test points
Module common:
No connection
LED (Green): ON
when current loop
power supply
is present
LED (Green): ON
when power is present