Input Power Conditioning
The drive is suitable for direct connection to input power within
the rated voltage of the drive. Listed in
are certain input power conditions which may cause component
damage or reduction in product life. If any of the conditions exist,
install one of the devices listed under the Possible Corrective Ac-
tion(s).
IMPORTANT: Only one device per branch circuit is re-
quired. It should be mounted closest to the branch and
sized to handle the total current of the branch circuit.
Input Power Condition
Possible Corrective Action(s)
Low Line impedance (less than 1% line reactance)
• Install Line Reactor
• Isolation Transformer
Greater than 120 kVA supply transformer
Line has power factor correction capacitors
• Install Line Reactor
• Isolation Transformer
Line has frequent power interruptions
Line has intermittent noise spikes in excess of 6000V (lightning)
Phase to ground voltage exceeds 125% of normal line to line
voltage
• Remove MOV jumper to ground
• Install Isolation Transformer with grounded secondary (if
necessary)
Ungrounded distribution system
240V open delta configuration (stinger leg)*
• Install Line Reactor
* For drives applied on an open delta with a middle phase grounded neutral system, the phase opposite the phase that is tapped in the
middle to the neutral or earth is referred to as the “stinger leg,” “high leg,” “red leg,” etc. This leg should be identified throughout
the system with red or orange tape on the wire at each connection point. The stinger leg should be connected to the center Phase B
on the reactor.
Table 15
Input Voltage Requirements
For voltages above or below listed specifications, contact your
power company or local electrician.
If machine is intended for four-wire service, a neutral leg must be
provided by power company.
If a delta supply system is used on a four-wire model, connect
high leg to L3.
IMPORTANT: Improper connections will result in equip-
ment damage and will void warranty.
DANGER
Electrical shock hazard will result in death or serious
injury. Disconnect electric power and wait five (5) mi-
nutes before servicing.
W810
DANGER
Hazardous Rotation Speed. Will cause serious injury
when controlling AC inverter drive with a parameter
unit, safety features are bypassed allowing basket to
rotate at high speeds with the door open. Place large
sign on front of machine to warn people of imminent
danger.
W361
Circuit Breakers and Quick Disconnects
Single-phase machines require a single-phase inverse-time circuit
breaker. Three-phase machines require a separate, three-phase in-
verse-time circuit breaker to prevent damage to the motor by dis-
connecting all legs if one should be lost accidentally. Refer to
section for model-specific circuit breaker requirements.
IMPORTANT: All quick disconnects should comply with
the specifications. DO NOT use fuses instead of circuit
breakers.
Installation
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DO NOT COPY or TRANSMIT
50
Part No. D1599ENR14
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