8.2.3 Start/Stop Setup
P3.2.5 Stop function
Selection
number
Selection name Description
0 Coasting
The motor is allowed to stop on its own inertia. The control by the drive is
discontinued and the drive current drops to zero as soon as the stop
command is given.
1
Ramp to min
frequency
After the Stop command, the speed of the motor is decelerated to minimum
frequency according to the set deceleration parameters.
2
Ramp to zero
frequency
After the Stop command, the speed of the motor is decelerated to zero
frequency according to the set deceleration parameters.
P3.2.6 I/O A start logic
Values 0...4 offer possibilities to control the starting
and stopping of the AC drive with digital signal
connected to digital inputs. CS = Control signal.
The selections including the text "edge" shall be used
to exclude the possibility of an unintentional start
when, for example, power is connected, re-connected
after a power failure, after a fault reset, after the drive
is stopped by Run Enable (Run Enable = False) or
when the control place is changed to I/O control. The
Start/Stop contact must be opened before the motor
can be started.
The used stop mode is Coasting in all examples.
Selection
number
Selection name Note
0
CS 1: Start Forward
CS 2: Start Backward
The function takes place when the contacts are closed.
1
CS 1: Start Forward
CS 2: Reverse
The function takes place when the contacts are closed.
2 Double Start
Run command is set when both Start 1 and Start 2 signals
are high. It is reset when both the start signals are low.
This can be used for a simple tank level control with
hysteresis: if the tank has to be filled, two NC contact
sensors will be placed at minimum and maximum levels. The
drive will start below the minimum and stop above the
maximum.
If the tank has to be emptied, two NO contact sensors have
to be used. The drive will start above the maximum and stop
below the minimum.
3
Start sign 1 + Analogue
Run command is set when Start 1 signal is high and a
selectable analogue input is below (or above) a
programmable threshold.
This can be used for a tank level control, where the analogue
measurement is used for both starting the pump and
controlling the speed.
4 Solar only
Run command is always active. Actual running condition is
determined by DC voltage level available from the solar
array.
133
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