Delta 36-325C Installation Guide download pdf (Page 14)

Installation and Connection

3.3 Connection of Power Circuit

RISK OF ELECTRIC SHOCK! Always disconnect supply voltage before servicing the

COMBIVERT F5. Wait 5 minutes before attempting to change the connections as the

DC Bus capacitors may still be charged.

Absolutely pay attention to the nameplate voltage of the KEB COMBIVERT and the

connected line voltage. A 230V-unit will be immediately destroyed on a 460V-power

supply. Never exchange the line and motor cables. The unit will be destroyed.

The COMBIVERT F5 motor controls specified in this manual are suitable for use on a circuit

capable of delivering not more than 10kA rms symmetrical ampers at the rated maximum

voltage.

Connection of the F5 series motor control to voltage systems configured as corner grounded

delta, center tap grounded delta, open delta, or ungrounded delta may defeat the internal

noise suppression. With this type of voltage supply the maximum phase to ground voltage is

300VAC for 230 VACrms units and 500 VACrms for 600VAC units. A balanced, center ground

wye connection is always recommended. The three phase voltage imbalance must be less

than 2% phase to phase. Greater imbalance can lead to destruction of the unit.

3.3.1 Wiring instructions

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Delta 36-325C Installation Guide Page 14