AuCom EMXAe - Auxiliary Trip; Typical Control Methods

OPERATION
CAUTION
Continued use of emergency mode is not recommended. Emergency mode
may compromise the starter and/or motor life as all protections and trips
are disabled.
Using the starter in emergency mode will void the product warranty.
8.4 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).
8.5 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
Start Ramp Time
(seconds)
Initial Current (%FLC)
Current Limit (%FLC)
Stop Mode
Stop Time (seconds)
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
46 | EMX4e User Manual (710-18433-00C)