bonitron M3460R, Customer Reference Manual

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BONITRON MODEL 3460 RIDE-THRU
Field start up procedure for rack systems
993001_19991022.doc
2 doc.# 993001
10/22/99
6. Verify shunt trip circuit.
•
Turn off associated inverter power switch to make the Bonitron Ride-Thru cabinet
disconnect trip
•
AC VOLTAGE DIP LED comes ON immediately
•
DC bus voltage should begin to decrease
•
The drive is not safe to service if the Ride-Thru has input power. (The shunt trip
interlock through the inverter power switch should prevent this from happening)
7. Reset Ride-Thru disconnect switch.
•
Turn disconnect switch off to reset
•
To avoid blowing fuses, allow DC bus to discharge until PRECHARGE
COMPLETE , and RIDE-THRU READY LEDs go OFF , (350-450Vdc) before
turning on disconnect
•
Repeat step 4
8. Verify threshold setpoint.
•
Turn off the Bonitron Ride-Thru disconnect, and watch the DC bus voltage fall. (See
threshold adjustment procedure)
•
AC VOLTAGE DIP LED comes ON immediately
•
RIDE-THRU ACTIVE LED will come ON when the bus drops to the threshold.
•
The DC bus will hold at the threshold momentarily
•
Allow the DC bus to discharge until the PRECHARGE COMPLETE LED goes
OFF
•
Repeat step 4
9. Verify system capability.
•
Turn on the Bonitron Ride-Thru breaker, and allow precharge to occur. Press the TEST
SYSTEM button on the front panel of the Bonitron Ride-Thru. (See threshold
adjustment procedure)
•
The TEST SYSTEM LED should come ON for 3 seconds
•
The RIDE-THRU ACTIVE LED should come ON for 2 seconds ( RTA will flash if
the load is light, stay on if the load is heavy)
•
BUS VOLTAGE meter on Ride-Thru should rise to the test boost level
•
BUS CURRENT meter should show some current if inverter is loaded
•
Inverter DC bus should rise to the test boost level
This completes the start up procedure.