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CONFIGURATION SETPOINTS
Full-voltage non-
reversing starter
Full-voltage reversing
starter
4–4
If the
setpoint is programmed to "FV Non-Reversing", the pre-contactor relay
Starter Type
(if any) is picked up for the set
the pre-contactor timer times out, the contactor A relay contact output picks up and seals-
in, starting the motor. When a stop control is received, contactor A relay contact output is
dropped out and the motor stops.
The following figure illustrates typical starter timing beginning from the stopped state.
Figure 4-2: Typical starter timing for full-voltage non-reversing starter
Motor current
Contactor A relay
Contactor B relay
Pre-contactor
Starting
Running
The following additional setpoint is available for the full-voltage non-reversing starter.
Pre-Contactor Time
Range: 0 to 60 seconds in steps of 1
Default: 0 seconds
This setpoint represents the time after a start command before the motor is started. An
audible or other warning signal can be activated in this interval by connecting the signal
to a contact output set to the pre-contactor function.
The full-voltage reversing starter type is a full-voltage or across-the-line reversing starter.
When a start A (forward) control is received, the pre-contactor relay (if any) is picked up for
the set
Pre-Contactor Time
picks up and seals-in, starting the motor in the forward direction. When a start B (reverse)
control is received, the A contactor is dropped out. When contactor A status off is received,
the starter waits for the set
transfer time timer times out, the contactor B relay picks up and seals-in, starting the
motor in the reverse direction. When a stop control is received, the contactor A and B
relays are dropped out and the motor stops. The starter logic is fully symmetrical between
forward and reverse.
When a contact input has its function set to "Forward Limit", and that contact closes, the
contactor A relay will drop out. When a contact input has its function set to "Reverse Limit",
and that contact closes, the contactor B relay will drop out.
The following figure illustrates typical starter timing beginning from the stopped state.
when a start control is received. When
Pre-Contactor Time
P
P = Pre-contactor time setting
. When the pre-contactor timer times out, the contactor A relay
Transfer Time
to allow the motor to slow or stop. When the
MM200 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS
888717A1.CDR
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