11
Installation
The Protective Earth (PE) wire connection is mandatory for human safety and proper
operation. This connection must not be fused or interrupted by any means. Failure to
follow proper PE wiring can cause death or serious injury.
The EN-204 and EN-208 drives require 90 to 264 VAC single phase power. The EN-214
can operate with single or three phase 90 to 264 VAC. If single phase power is used with
the EN-214, you must de-rate the output power available by 20 percent.
Note
The maximum voltage applied to the drive terminals must not exceed 264 VAC phase to
phase and phase to PE ground. This can be accomplished by referencing the AC supply
to earth ground.
Do not connect or disconnect the AC power by inserting or removing the AC power
connector. Using the connector in this manner, even once, will damage the connector,
making it unusable.
AC Supplies NOT Requiring Transformers
If the distribution transformer is configured as shown in the figures below, the AC power
supply can be connected directly to the amplifier terminals.
Figure 6:
Earth Grounded WYE Distribution Transformer
L3
L2
SECONDARY
DISTRIBUTION PANEL
EARTH
GROUND
(Protective Earth)
230 VAC
To Fusing and
Drive Terminals
L1
PE
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