Chapter 1 – Basic Information
1-4
1.5 RecommendedInstallation
❶ AC Source
Supply
Use a grounded power source with a voltage within the
permissible range of drive input voltage rating. Ungrounded
power sources will cause nuisance tripping and/or damage to the
drive.
❷ Circuit Breaker
or Disconnect
Switch
Select Circuit Breaker and/or Disconnect Switch in accordance
with applicable national and local codes.
❸ Fusing
(Recommended)
Select recommended fuses per instruction manual, Appendix A.
❹ Inline Contactor
(Optional)
When installed, do not use for the purpose of starting or stopping
the drive.
❺ AC Reactor
(Recommended)
An AC reactor is recommended to reduce transient currents and
voltages that could damage the drive. Reactors also help with
harmonic reduction and power factor improvement. A reactor
must be used when the KVA rating of the power source is 10
times greater than the KVA rating of the drive.
Installation and
Wiring
To reliably operate the drive, install the drive in the proper
orientation and with proper clearances. Incorrect terminal wiring
could result in equipment damage.
❻ DBU and DBR
Brake Unit (Module)
and Resistor
The addition of dynamic braking may be required for applications
that require rapid deceleration or are connected to high inertia
loads. In such applications, Over Voltage faults will occur unless
adequate dynamic braking is added.
❼ Output
Filter (Optional)
Output Reactor – Recommended with Non-Inverter Duty rated
motors. For lead lengths less than 300 feet. Minimizes drive over
current trips. Helps protect motor from over voltages and heating.
Reduces motor noise.
Long Lead Filter - for lead lengths >300 feet up to 1500 feet.
Reduces peak voltages at the motor.
Sine Wave Filter – for lead lengths greater than 1500 feet.
Provides sinusoidal wave form to motor, reduces motor noise,
vibration and heat.
Motor Connect to a suitably rated induction motor. Do not connect
power factor capacitors, surge arrestors or RFI/EMI filters to the
output side of the drive.
❶
❷
❸
❹
❺
❼
DBR
DBU
❻
Failure to follow the Recommended Installation Practices may void Warranty
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