Rockwell Automation Allen-Bradley 2094-BC01-M01-S, User Manual

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246 Rockwell Automation Publication 2094-UM001D-EN-P - May 2010
Appendix D DC Common Bus Applications
Calculate Total Bus
Capacitance Total bus capacitance is the sum of all capacitance values for your Bulletin 2094
common-bus modules. Specifically, this includes the capacitance values for each
of these modules.
•
Leader IAM (converter and inverter) module
•
Each AM and shunt module (if present) on the leader IAM power rail
•
Each follower IAM (converter and inverter) module
•
Each AM module on the follower IAM power rail
Refer to Bulletin 2094 Drive Capacitance Values on page 247 for IAM, AM, and
shunt module capacitance values.
IMPORTANT
If total bus capacitance of your system exceeds the leader IAM module
pre-charge rating and input power is applied, the IAM module
seven-segment status indicator will display error code E90 (pre-charge
timeout fault).
To correct this condition, you must replace the leader IAM module with a
larger module or decrease the total bus capacitance by removing AM
modules.
Leader IAM (230V)
Module
Maximum Bus
Capacitance
µF
Leader IAM (460V)
Modules
Maximum Bus
Capacitance
µF
2094-AC05-MP5- x
7145
2094-BC01-MP5- x
4585
2094-AC05-M01- x 2094-BC01-M01- x
2094-AC09-M02- x 15,295 2094-BC02-M02- x 8955
2094-AC16-M03- x 34,400 2094-BC04-M03- x 8955
2094-AC32-M05- x 62,825 2094-BC07-M05- x 17,915
IMPORTANT
If your total bus capacitance value exceeds the value in the table above,
you must increase the size of the leader IAM module or decrease the
total bus capacitance by removing AM modules.