© 2018 Emerson Climate Technologies, Inc.
5
INTRODUCTION
Product Description
The inverter drive has been developed specifically for
the variable speed compressor. The drive will power
the compressor, control the compressor running
speed, provide compressor and drive protection and
communicate with the master controller. The drive
requires cooling and is typically installed in a system
near the compressor.
Theory of Drive Operation
The primary purpose of the drive is to convert the
50/60 Hz AC input voltage into a variable frequency,
variable voltage output to power the variable speed
scroll compressor. The drive conditions the AC input
Voltage through a series of conditioning processes to
arrive at the desired output. The drive first converts the
AC input voltage into a DC bus. The DC voltage is then
pulse-width modulated to replicate a sinusoidal current
at the desired frequency and voltage.
Agency Recognition
UL 60730-1
Nomenclature
The model number of the drive includes the power
rating and nominal voltage input to the drive. Contact
Application Engineering
for all the alpha and numeric
characters in the drive model number.
INSTALLATION
Drive Handling
Caution must be used when lifting and installing
the drive. Failure to use caution may result in
bodily injury.
The drive is designed to meet creepage and
clearance requirements for a maximum altitude of
2000 meters.
•
Correct handling and storage of the drive is
essential in preventing mechanical damage.
•
Box and the protection bag inside the box need to
be carefully opened. Do not use any sharp material
to open the protection bag, which may damage the
drive.
•
Never cut across the drive with any sharp
materials.
•
Do not hold by the components on the drive or
drive accessories, this can damage them.
•
Once opened do not stack the drives on each other.
•
When handling the drive, the only correct way is to
hold it by the edges of the heatsink.
•
Do not drop any mechanical tools on the drive or
drive accessories.
•
It is always recommended to use ESD control
wristbands while touching any part of the drive.
Personnel handling the drives in a manufacturing plant
environment should guard against static electricity by
using the appropriate equipment
– antistatic wrist
straps and mats.
Mounting
The drive should be located within 5 feet of the
compressor since the wiring between the drive, and the
compressor is unshielded.
Air-cooled drives are supported inside the HVAC
system by an extended heatsink plate. The plate
mounts through an opening in the cabinet sheet metal
to expose the heat exchanger to the condenser fan air
stream. The flange contains a gasket surface to
prevent water from entering the electronics side of the
control box.
The flat plate option accommodates installation to
systems using the mating gas or liquid cooled cold
plate heat exchanger. The mating cold coupling plate is
designed by OEM to accommodate the system design.
There are holes in the drive mounting flange for
mounting purposes. These holes will accommodate a
M5 sized screw for mounting.
Drive Accessories and Dimensions
Contact
Application Engineering
for all the drawings
and detailed dimensions with tolerances.
Wiring Diagram
Refer to
Figures 1-2
for a detailed description of the
drive wiring diagrams. Refer to
Tables 1-2
for a
detailed description of the connector pins definition.
OPERATION & FUNCTION
Hi-pot Procedure / Set-up
Refer to
Addendum
for hi-pot procedure and setup.
Please call your Application Engineer for additional
details.
