ASTAT XL User Manual
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62
DET-812
10.4
Auxiliary Trip Circuit
In normal operation the ASTAT XL is controlled via a remote two-wire signal (terminals 56, 57).
Input A (terminals 53, 55) is connected to an external trip circuit (such as a low pressure alarm switch
for a pumping system). When the external circuit activates, the soft starter trips, which stops the
motor.
K1
F1
22
21
6/T3
2/T1
13
14
4/T2
24
33
34
5/L3
3/L2
S3
S1
S2
E
1/L1
65
64
41
40
56
57
58
53
55
A6
A5
A4
54
0888
0.
B
6
3
1
2
4
5
+
+
1
Three-phase supply
2
Motor terminals
3
Control voltage (model
dependent)
4
Remote control inputs
5
Motor thermistor input
6
Relay outputs
S1
Start/stop contact
S2
Reset contact
S3
Auxiliary trip contact
13, 14
Relay output A
21, 22, 24 Relay output B
33, 34
Relay output C
Parameter settings:
•
Parameter 6D
Input A Function
•
Select 'Input Trip (N/O)'. Assigns the Input A to Auxiliary Trip (N/O) function.
•
Parameter 6E
Input A Name
•
Select a name, eg Low Pressure. Assigns a name to Input A.
•
Parameter 4E
Input A Trip
•
Set as required. For example, 'Run Only' limits the input trip to when the soft starter is running
only.
•
Parameter 5E
Input A Trip Delay
•
Set as required. Sets a delay between the input activating and the soft starter tripping.
•
Parameter 5F
Input A Initial Delay
•
Set at around 120 seconds. Limits operation of the input trip to 120 seconds after the start
signal. This allows time for pressure to build up in the piping before the low pressure input
becomes active.
