10
Connecting to a power supply
A well regulated electrical mains supply is required along with cable connections conforming to the
best practice of noise immunity. It is not recommended to site these drives alongside electrical
devices that may generate mains-borne noise, for example 3-phase contactors and inductive heaters.
Set the voltage selector to 115 V for 100-120 V 50/60 Hz supplies or 230 V for
200-240 V 50/60 Hz supplies. Always check the voltage selector switch before
connecting to the mains supply or the pump will be damaged.
Make suitable connection to an earthed single-phase mains electricity
supply.
If the pump type is one with an N Module, the voltage selector is not visible while the
module is in place. It is mounted in the switch plate at the rear of the pump, protected
from water by the N Module. The module must be removed to allow access to the switch
plate. Do not switch the pump on unless you have checked that it is set to suit your power
supply by removing the module and inspecting the switch and then refitting the module.
1.
2.
3.
4.
Figure 9 - Voltage selector
We recommend using a commercially available supply voltage surge and/or
noise suppression where there is excessive electrical noise.
Ensure that all power supply cables are adequately rated for the equipment.
Only use with supplied power cable.
The pump must be positioned so that the disconnection device is easily
accessible when the equipment is in use. The pump's power input plug is the
disconnecting device (for isolating the motor drive from the power supply in
an emergency).
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m-730en-en-09 02-02-22