SYSTEM DESIGN
Remote Keypad
EMX4e starters can be used with a remote keypad, mounted up to 3 metres away
from the starter. Each expansion card includes a keypad connection port, or a
dedicated keypad connector card is available.
Finger Guard Kit
Finger guards may be specified for personnel safety. Finger guards fit over the soft
starter terminals to prevent accidental contact with live terminals. Finger guards
provide IP20 protection when used with cable of diameter 22 mm or greater.
Finger guards are compatible with models EMX4e-0184B ~ EMX4e-0580B.
Soft Starter Management Software
PC software can provide real-time or offline management of soft starters.
•
For real-time management in a network of up to 254 starters, the
software must connect to the soft starter via a Modbus TCP or Modbus
RTU card. The software can monitor, control and program the starter
across the network.
•
The software can be used to program the starter via the USB port on the
pumping smart card.
•
For offline management, a configuration file generated in the software
can be loaded into the starter via the USB port.
3.8
Main contactor or circuit breaker
A main contactor or circuit breaker should be installed with the soft starter.
•
A main contactor is recommended to protect the soft starter from voltage
disturbances on the network, while stopped. Select a contactor with an
AC3 rating greater than or equal to the full load current rating of the
connected motor.
•
Use a shunt trip circuit breaker to isolate the motor circuit in the event of
a soft starter trip. The shunt trip mechanism must be powered from the
supply side of the circuit breaker or from a separate control supply.
Use the main contactor output (33, 34) to control the main contactor.
3.9
Power Factor Correction
If power factor correction is used, a dedicated contactor should be used to switch in
the capacitors.
To use the EMX4e to control power factor correction, connect the PFC contactor to a
programmable relay set to Run. When the motor reaches full speed, the relay will
EMX4e User Manual (710-18433-00C) |
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