Emerson SZV22 Manuel D’Utilisation
13
2008SSD-34
(5/08)
Dual-Compressor Module
Installation
2.6.4 Electrical
Requirements
Figure 11 Typical Compressor Module Electrical Requirements
1
2
3
4
Optional if more than one
compressor module used
compressor module used
Power
to Compressors
24VDC
Cooling
Fan
24V Discrete Inputs
from Scroll Module
1
1
Table 2
Typical Compressor Module power supply requirements
Compressor Power (data based on 480VAC)
Variable Speed
Module horsepower
10 or 15 HP
VFD voltage supply range
342-528VAC
Phase
3-phase*
Frequency
50/60 Hz
Low Voltage DC Specifi cations - Oil Cooler Fan Voltage and Power
Fan motor voltage
24VDC
Total fan motor current
4.5A
Additional power may be required to support customer logic and control circuits.
* Contact factory for information about single-phase applications.
** Reduced capacity at 50 Hz.
* Contact factory for information about single-phase applications.
** Reduced capacity at 50 Hz.
Code
Description
1
Control Techniques VFD,* 10 or 15 HP
model specifi c
model specifi c
2
24VDC power supply **
3
PLC or other control for inputs from
Compressor Module
Compressor Module
4
480V 3-phase input ***
Notes
* VFD on Variable Speed Drive models.
** All other components supplied by Packagers.
*** Contact factory for information about single-phase and
* VFD on Variable Speed Drive models.
** All other components supplied by Packagers.
*** Contact factory for information about single-phase and
other voltage applications.
Optional if more than one
Compressor Module used