Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 53)

4-26 Description of Features
1503-UM054C-EN-P – June 2013
Note
: Close and Jog are for an Electrically Held contactor and Close
and Trip are for a Mechanically Latched contactor.
The Close or Jog commands are re-applied before the contactor
opening sequence can be verified. Once a Close or Jog command are
issued, the commands must be removed for a period of at least
60mS, plus the Drop Out Delay time, before re-applying the
commands (see Figure 5.5 for a timing representation of the
contactor control commands).
Note
: The contactor will only respond to a close command re-
application after the re-start delay timer has expired (see Delayed
Restart in Chapter 4 for an explanation of the Delayed Restart
Timer).
The Close and Trip commands are present simultaneously (valid for
Mechanical Latch contactors only).
This condition is valid for both Electrically Held and Mechanically
Latched contactors.
Mechanical Latch Fail to Trip
This is a Warning condition and the status of the Trip coil
circuits/wiring should be analyzed.
This indicates that the Basic module within the IntelliVAC Plus unit
has a warning due to a Mechanical Latch contactor not tripping off
after being given a Trip command and the status of the contactor
being controlled is in a Closed condition.
The Module status LED is Yellow to indicate a module with warning
level problems and the Module status relay is closed to allow
externally connected circuits to function.
The Contactor status LED is Yellow to indicate that the contactor is
in a Closed condition and the Contactor status relay is closed to
reflect the status of the contactor thus allowing externally connected
circuits to function.
This condition is valid for Mechanically Latched contactors only.
Power up with Contactor CLOSED
After TDUV, if the module can not detect the contactor is dropped
off source the power supply is still lost/low, this fault condition
would also be triggered.