Vacon 20 CP/X, Руководство по применению

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vacon • 43 Parameter description
4
4.2 Advanced settings
P2.1 S
TART
/S
TOP LOGIC
These logics are based on Start sign 1 and Start sign 2 signals (defined with P4.1 and P4.2).
Usually they are coupled to inputs DIN1 and DIN2.
Values 0...3 offer possibilities to control the starting and stopping of the AC drive with digital
signal connected to digital inputs.
The used stop mode is
Coasting
in all examples. See mode 0 and 1 examples in the following
pages.
Selection
number
Selection name Note
0
Start sign 1: Start Forward
Start sign 2: Start Backward
The function takes place when one contact is
closed. If the other contact is closed while the first
is still closed, the drive will stop and issue alarm
A55
1
Start sign 1: Start Forward
Start sign 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 sig-
nals 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 sen-
sors 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 avail-
able from the solar array.