Technical information

8 – THEORY OF OPERATION
Phase Control
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2. The master MX’s analog output needs to be configured. Set the Analog Output Function parameter to option 10 or “0 –
100% firing”. The Analog Output Span parameter should be set to provide a 0 – 10V or 0-20 milliamp output to the
slave starter(s). Adjust analog output jumper (JP1) to provide either a voltage or a current output.
Set the slave MX’s Starter Type parameter to Phase Control and verify that the Analog Input Offset and Analog Input
Span parameters are set to accept the master signal.
3. The slave MXs need to be provided with a start command from the master MX. A RUN programmed relay from the
master MX can be used to provide the start command to the slaves. The slave (s) Control Source parameters (Local
Source and Remote Source) settings need to be set appropriately.
4. The slave MX analog input(s) need to be configured for the appropriate voltage or current input signal type. Set the
analog input jumper (JP3) to the desired input type.
For additional master / slave application information, consult the factory.
Note: The power stack must be rated for continuous non-bypassed duty in order to operate in Phase Control mode
continuously, NO BYPASS.
Note: When operating in Phase Control mode, the acceleration ramp, kick, and deceleration settings have no effect on
operation.
Note: When in Phase Control mode the following motor / starter protective functions are available:
- Current Imbalance
- Over Current
- Under Current
- Over Voltage
- Under Voltage
- Over Frequency
- Under Frequency
- Phase Loss
- Phase Rotation
- Current while Stopped.
- Motor OL
- Residual Ground Fault
- Instantaneous Over Current (IOC)