User's Manual

4. Commissioning
MF0145AUA.doc Manual for ION
®
-M7P/7P/17P Page 39
4.2.12. Power Connection
Before connecting electrical power to the RU, the system must be grounded as
described in 4.2.4 Grounding (Earthing).
Mains power must be connected at the mains connector of the unit (see section 4.2.3
Connections).
The power supply plug is part of the delivery. The correct wiring of the power supply
plug is as follows:
figure 4-14 AC mains plug figure 4-15 DC mains plug
 Note: For the AC power supply connection, a minimum cross section of 1.5 mm
2
is required, and for the DC power supply connection a minimum cross
section of 2.5 mm
2
is required. Each wire must observe the applicable
national regulations regarding loop impedance, voltage drop, and methods
of installation. Make sure to connect the correct voltage to the unit.
 Note: Do not connect or disconnect the power cord at the mains connector while
power is on. Turn off mains power * before connecting the power cord at
the Remote Unit, then, engage mains again.
* Mains power must be interruptible with an external delay-actions mains breaker. For the mains
breaker, observe the following recommendation:
120 Volt / 20 Amp max. or 240 Volt / 16 Amp, single-phase, 50 / 60 Hz AC service is needed,
i.e. the external AC breaker should be 20 Amps max. for 120-Volt service or 13 to 16 Amps for
240-Volt service. Always make sure that your local requirements are kept.
For the DC power supply, observe the local regulations of the DC service provider.