ACH550 Installation, Operation and Maintenance Manual 79
ACH550-PCR/PDR
ACH550-PCR/PDR
Installation
This information is unique to ACH550 input disconnect configurations (PCR or PDR).
The ACH550 with Input Disconnect is an ACH550 AC adjustable frequency drive
packaged with an input disconnect switch or circuit breaker. Refer to the Installation
instructions on page 3, for all other information. Failure to observe the warnings
and instructions may cause a malfunction or personal hazard.
WARNING! Before you begin read Safety on page 2.
WARNING! When the ACH550 with Input Disconnect is connected to the line power,
the Motor Terminals T1, T2, and T3 are live even if the motor is not running. Do not
make any connections when the ACH550 with Input Disconnect is connected to the
line. Disconnect and lock out power to the drive before servicing the drive. Failure to
disconnect power may cause serious injury or death.
1. Install wiring
WARNING!
• Metal shavings or debris in the enclosure can damage electrical equipment and
create a hazardous condition. Where parts, such as conduit plates require cutting
or drilling, first remove the part. If that is not practical, cover nearby electrical
components to protect them from all shavings or debris.
• Do not connect or disconnect input or output power wiring, or control wires, when
power is applied.
• Never connect line voltage to drive output Terminals T1, T2, and T3.
• Do not make any voltage tolerance tests (Hi Pot or Megger) on any part of the
unit. Disconnect motor wires before taking any measurements in the motor or
motor wires.
• Make sure that power factor correction capacitors are not connected between the
drive and the motor.
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