VersiStart p III
48
9.6 Auxiliary Trip
An external trip circuit (such as a low pressure alarm switch for a pumping system)
can be used to trip the soft starter and stop the motor. The external circuit is
connected to a programmable input (input A 13, 14 or input B 13, 15). To control the
behaviour of the trip, set the following parameters:
•
Parameter 7A
Input A Function
: select 'Input Trip (N/O)'.
•
Parameter 7B
Input A Trip
: set as required. For example, 'Run Only' limits
the input trip to when the soft starter is running only.
•
Parameter 7C
Input A Trip Delay
: sets a delay between the input activating
and the soft starter tripping.
•
Parameter 7D
Input A Initial Delay
: sets a delay before the soft starter
monitors the state of the input, after the start signal. For example, a delay
may be required to allow time for pipeline pressure to build up.
•
Parameter 7J
Input A Name
: select a name, eg 'Input A Trip' (optional).
9.7 Typical Control Methods
The requirements of an application differ between each installation, but the methods
listed below are often a good starting point for common applications.
Application
Start Mode
S
tar
t
R
am
p
T
im
e
(se
co
n
d
s)
Ini
ti
a
l C
ur
rent
(%F
L
C
)
C
u
rr
e
n
t L
im
it
(%F
L
C
)
Stop Mode
S
top T
im
e
(s
e
c
on
ds
)
Bow thruster
Constant Current
5
100
400
Coast To Stop
n/a
Centrifuge (Separator)
Constant Current
1
200
450
Coast To Stop
n/a
Chipper
Constant Current
1
200
450
Coast To Stop
n/a
Compressor -
reciprocating - loaded
Constant Current
1
200
450
Coast To Stop
n/a
Compressor -
reciprocating - unloaded
Constant Current
1
200
400
Coast To Stop
n/a
Compressor - screw -
loaded
Constant Current
1
200
400
Coast To Stop
n/a
Compressor - screw -
unloaded
Constant Current
1
200
350
Coast To Stop
n/a
Conveyor - horizontal
Constant Current
5
200
400
TVR Soft Stop
10
Conveyor - inclined
Constant Current
2
200
450
Coast To Stop
n/a
Conveyor - vertical
(bucket)
Constant Current
2
200
450
Coast To Stop
n/a
Crusher - cone
Constant Current
1
200
350
Coast To Stop
n/a
Crusher - jaw
Constant Current
1
200
450
Coast To Stop
n/a
Crusher - rotary
Constant Current
1
200
400
Coast To Stop
n/a
Debarker
Constant Current
1
200
350
Coast To Stop
n/a
Fan - axial (damped)
Constant Current
1
200
350
Coast To Stop
n/a
Содержание VersiStart p III 105
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