Lenze MC1000 Series - Manual (Page 58)

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25 START (START MODE)
WARNING!
Automatic start of equipment may result in damage to equipment and/or
injury to personnel! Automatic start should only be used on equipment
that is inaccessible to personnel.
This parameter selects the starting method for the drive, and can be set for one of
the following:
NORMAL
The drive will start when the appropriate contact closure is
made on the terminal strip (in REMOTE mode), or by pressing
the keypad START key (in LOCAL mode). To start the drive in
NORMAL mode, a start command must be issued at least two
seconds AFTER input power is applied.
POWER UP The drive will automatically start upon application of input power.
The drive MUST be wired for a two-wire start/stop circuit (refer
to Section 14 - CONTROL WIRING). The start command MUST
be present when power is applied for this function to operate.
AUTO RE- The drive will automatically restart after a protective fault or upon
application of input power. As with the POWER-UP option, a
start command must be present for this function to operate.
RE-BRAKE After a fault, the drive will apply DC braking equal to the DC
BRAKE setting for 15 seconds and then restart. This is done
to ensure the motor is stopped during the restart attempt, as
the drive will not start into a spinning motor.
NOTE 1: POWER UP, AUTO RE-, and RE-BRAKE settings are only active when
the drive is in REMOTE mode (see Parameter 30 - CONTROL).
NOTE 2: After a fault, the drive will attempt to restart five times, and if unsuccessful,
will shut down on a FAULT LOCKOUT. Every 15 minutes that passes will decrement
the restart counter by one. Therefore, 75 minutes after a successful restart, the restart
counter is fully reset, and the drive can once again attempt five restarts.
NOTE 3: The drive WILL NOT restart after the following faults: CONTROL and
PWR SAG. Also, if an OUTPUT fault occurs below 1.5 Hz, only one restart will be
attempted, after a four minute delay. If unsuccessful, it will then trip into FAULT
LOCKOUT, which will require a manual reset. This is done to protect the drive in
case of a shorted motor.
26
STOP (STOP MODE)
This parameter selects whether the motor will COAST to a stop, or RAMP to a stop,
when the drive is given a stop command.
COAST
When a stop command is given, the drive shuts off the output
to the motor, allowing it to coast to a stop. The time required
for the motor to stop is governed by the inertia of the load.
RAMP When a stop command is given, the drive will decelerate the
motor to a stop over a period of time according to Parameter
9 - DECEL. Once the output frequency reaches 0.0 Hz, there
will be a 200 ms delay before the drive can be started again.
RAMP 2 Same as RAMP, but without the 200 ms start delay. This allows
faster start/stop cycles for applications that require it.