bonitron M3460R, Customer Reference Manual

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BONITRON MODEL 3460 RIDE-THRU
Field start up procedure for rack systems
993001_19991022.doc
1 doc.# 993001
10/22/99
Procedure:
1. Ensure the Bonitron Ride-Thru has been properly installed.
•
Use Bonitron Field Installation Procedure for Rack Systems document # 993002
2. The Ride-Thru DC bus threshold must be coordinated with the under voltage trip setting of
the inverter. If the threshold is to close to the nominal bus, the Ride-Thru may supply power
to the drive continuously, and overheat. If the threshold is to close to the under voltage trip
level of the inverter, the system may not "Ride-Thru", and under voltage trips will still occur.
Most inverters have an under voltage trip point of -15% of nominal. Some inverters can be
reprogrammed to change this trip level. Bonitron typically would like the DC bus threshold
to be about -10% of the nominal bus. For example, Bonitron sets all 460VAC systems to hold
the DC bus to 590Vdc
•
Refer to your inverter's documentation for details on adjustment of the under voltage trip
setting.
•
Refer to Bonitron "Threshold Voltage Adjustment Procedure" document # 985001 for
details on how the Ride-Thru DC bus threshold can be changed.
3. With the Ride-Thru disconnect turned off, apply power to the system.
•
Ensure that the associated inverter is working properly
•
Confirm the under voltage trip point if possible.
4. Turn on the Ride-Thru disconnect switch and observe the following conditions on the rack
display panel:
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DC BUS VOLTAGE meter should quickly rise to about 620Vdc
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Green POWER LED should come ON
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Green PRECHARGE COMPLETE LED should come ON
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Green RIDE-THRU READY LED should come ON
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Red RIDE-THRU ACTIVE LED should be OFF
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Red AC VOLTAGE DIP LED should be OFF
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Red HEATSINK OVERTEMP LED should be OFF
5. Verify DCS connection (if used).
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DCS should read the state of the input disconnect
•
DCS should read the Ride-Thru status signals as found in the Bonitron manual section 3
•
It may be considered important to know if the Ride-Thru is not ready for the next
power dip, before it happens
•
If DCS is not used or another run signal is not used, be sure that a jumper is installed
across terminals 9 & 10 of TS2, (run command) on the 4460C board.