Installation and connection Diaphragm pump N96
16 Translation of Original Operating and Installation Instruction, English, KNF 316836-316838 01/20
7.3 Electrical connection
DANGER
Danger to life from electric shock
àOnly have the pump connected by an autho-
rized specialist.
àOnly have the pump connected if the power
supply is disconnected.
à
When connecting to a power source, observe the applicable standards,
directives, regulations and technical standards.
à
Install in the electrical wiring system a device to disconnect the pump
motor from the electrical supply network (in acc. with EN 60335-1).
à
Protect the pump motors in accordance with EN 60204-1 (overcurrent
protection, overload protection).
à
The motors may only be operated in an SELV circuit.
The control lines of the BLDC motor are only protected to a voltage
of up to 1.5 kV (acc. to HBM ESD rating).
If higher ESD requirements are needed, measures are to be pro-
vided by the owner himself.
Refer to the type plate for the maximum current consumption of the
pump.
à
It is recommended that an additional EMERGENCY-STOP device be
installed.
à
Mount the pumps in such a way that it is not possible to touch the elec-
trically live parts (electrical connection).
The ground potential of the power supply, the interface(s) and the
pump housing are to be at the same potential. Compensating cur-
rents via the motor controller are to be prevented as they may result
in the destruction of the electronics. A sufficient potential equaliza-
tion in accordance with EN 60479-1 is to be dimensioned.
Fastening the connection cables
à
Fasten the connection cables so that
– the cables do not come into contact with movable or hot parts.
– the cables cannot be worn or damaged on sharp corners or edges
– no tensile and pressure forces are exerted on the connection point
of the cables (strain relief)
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