Rockwell Automation GV3000/SE AC Drive AutoMax Network Communication Board, M/N 2AX3000 - Manual (Page 52)

Drive Configuration 3-5
P.062 Option Port: Communication Loss Response (continued)
If P.062 = 1
The drive continues to operate, using the last reference received from the network
master.
The response to network communication loss is:
• The drive continues to operate, using the last reference received from the network
master.
• An entry is made into the drive’s error log for each active-to-inactive transition of
network communication status.
• The front panel REMOTE LED blinks, indicating that the network is inactive.
If network communication is re-established, the drive will again follow the reference
and sequencing control inputs supplied by the network master. Note that if P.054 = ON
and the start and stop inputs are on (1), the drive will start.
Note that in this configuration, it might not always be possible to stop the drive over the
network.
!
ATTENTION: In volts/hertz regulation, if P.000 (Control Source) is set to
OP (Option Port), and P.062 is set to 1 (hold last reference), and the drive
loses communication with the network, the drive will maintain the last
frequency command sent to it. Ensure that drive machinery, all drive-train
mechanisms, and application material are capable of safe operation at
the maximum operating speed of the drive. Failure to observe this
precaution could result in bodily injury.
ATTENTION: In vector regulation, if U.000 (Torque Reference Source)
is set to 2 (Option Port), and P.062 is set to 1 (Hold Last Reference), and
the drive loses communication with the network, the drive will no longer
be regulating speed. Instead, motor speed will vary according to the load,
up to the overspeed limit. Ensure that driven machinery, all drive-train
mechanisms, and application material are capable of safe operation at
the maximum operating speed of the drive. Failure to observe this
precaution could result in bodily injury.
ATTENTION: When P.055 is set to ON , the STOP / RESET key is functional
only from the selected control source. As a safety precaution, Reliance
Electric recommends that an emergency stop pushbutton be located
near the drive in an easily accessible location. As a further safety
precaution, the user should post a warning on the drive to alert personnel
that the
STOP / RESET key is not functional. Failure to observe this
precaution could result in severe bodily injury or loss of life.