11
Installation and Connection
3.3 Connection of Power Circuit
3.3.1 Wiring the connectors
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 votlage is 300VAC
for 230 VACrms 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.
3.3.2 Wiring instructions
7
L1L2
L3
++
--
E
Steps to wire the connectors
• Remove the connector from the inverter housing by
grasping it firmly and pulling straight out
• The maximum wire gauge is 14 awg or 1.5mm
• Strip the insulation back 0.25 in (7mm)
• The use of ferrules is optional
• Press a flathead screwdriver into the upper
slot
• Slide the bare wire into the lower slot
• Remove the screw driver and check the
wire connection by pulling back on the
wire to ensure it stays
