Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 109)

8-4 Configuration/Programming
1503-UM054C-EN-P – June 2013
Time Delay Undervoltage Configuration (TDUV)
This setting controls the amount of time that the contactor maintains
closed on the occurrence of an input line voltage dip.
This setting may be overridden by the DeviceNet parameter TDUV
Hold-Up Time Source See Section TDUV Programmability in
Appendix B for a description.
Table 8.E – TDUV Hold-Up Times
TDUV Hold-up Time
DIP SW2
4 5
0.2 Sec OFF OFF
0.5 Sec OFF ON
1.0 Sec ON OFF
2.0 Sec ON ON
Power-up Safety
This setting determines how the unit will respond to having a
CLOSE, JOG or TRIP command present during power-up, in the
following manner.
If the Power-up Safety feature is Enabled:
– The unit will ignore the CLOSE or JOG command and generate a
warning condition.
– The unit will respond to a TRIP command and immediately open
the contactor (ML contactor).
– After power-up, if the command is removed the unit will respond
to the reapplication of a CLOSE or JOG command.
If the line voltage goes below the Undervoltage Close (Vin < 95V)
or below the Undervoltage Hold (Vin < 80V) or below the Line
Loss/Power Loss (Vin < 50V), even if the TDUV feature is enabled,
then, once the voltage recovers to > 95V (as long as the electronics
has not completely reset), then the IE/IB will be seen as having gone
through a power-up sequence. In this case the IE/IB will treat the
Power-up Safety feature just as it would when the unit is freshly
powered up from a zero voltage line condition and it will follow the
Power-up safety rules above.
If the Power-up safety feature is Disabled:
– The unit will respond to a CLOSE command and immediately
close the contactor.
– The unit will respond to a TRIP command and immediately open
the contactor (ML contactor).
– The unit will treat a JOG command the same as if the Power-up
safety feature is Enabled.