User Manual

Troubleshooting the Drive
9-7
Figure 9.5 – DC Bus Voltage Terminals (200-400 HP Drives)
D-C BUS CAPACITORS RETAIN HAZARDOUS VOLTAGES
AFTER INPUT POWER HAS BEEN DISCONNECTED.
WAIT FIVE (5) MINUTES FOR THE D-C BUS
CAPACITORS TO DISCHARGE AND THEN CHECK THE
VOLTAGE WITH A VOLTMETER THROUGH THE ACCESS
SLOTS SHOWN ABOVE. VOLTAGE MUST BE 50 VOLTS
OR LESS PRIOR TO SERVICING.
DANGER
Initial DC Bus Measuring Points (Inner Door Closed)
J1 CONNECTOR ON REGULATOR BOARD.
CONTROL BOARD WI RING TRAY TO
WITH I NTERCONNECTION WIRI NG FROM
ALLOW 6 INCH RADIUS SERVI CE LOOP
OR LESS PRIOR TO SERVICING.
SLOTS SHOWN ABOVE. VOLTAGE MUST BE 50 VOLTS
VOLTAGE WITH A VOLTMETER THROUGH THE ACCESS
CAPACITORS TO DISCHARGE AND THEN CHECK THE
WAIT FIVE (5) MINUTES FOR THE D-C BUS
AFTER INPUT POWER HAS BEEN DISCONNECTED.
D-C BUS CAPACITORS RETAI N HAZARDOUS VOLTAGES
BM
PULL SHIELD TABS IN AND ROTATE SHIELD OUT
W
TORQUE TO 325IN-LBS
CONNECT USING 350MCM TWO HOLE TERMINAL LUGS
616300-1 47A
GND
DB DC-
DANGER
DC+ U V
CONTROL BOARD WIRING TRAY
R ST
POWER CONNECTIONS
-
Power Module Interface Board
+
(When the bus voltage is 50 VDC or less, the inner
door may be opened and the voltage measured on
the DC bus bars as shown below.)
DC Bus Bar Measuring Points (Inner Door Open)
-
+
DANGER