Pacific AMX series, Operation Manual

Page: 69 / 159

SECTION 3 INSTALLATION
55
3.2.7 OUTPUT VOLTAGE RANGE CONFIGURATION, MODELS 140-AMX, 160-AMX,
345-AMX, 360-AMX, 390-AMX, and 3120-AMX
This paragraph describes the configuration of the Output Voltage Range for the Models 140, 160, 345, 360,
390, and 3120-AMX Power Sources. These models can be configured for either 0-135 VAC
l-n
, 0-204 VAC
l-n
, 0-
273 VAC
l-n
, or 0-341 VAC
l-n
. The 0-204 VAC range is designated as the VR1.5 output form. The 0-273 VAC
range is defined to be the VR2.0 output form, and, finally, the 0-341 VAC range is defined to be the VR2.5
output form. A Magnetics Module (Assembly No. 134310) is required for the 204, 273 and 341 VAC output
forms.
Refer to Figure 3.2.7 for location of components referenced below and range tap selection information.
Conversion to the 204 VAC Output Range (VR1.5) is as follows:
1)
Remove the top cover of the Magnetics Module.
2) Wire for 1.5:1 ratio as per wire table of Figure 3.2.7.
3) Replace top cover of Magnetics Module.
4) Connect Magnetics Module to the power source. The Magnetics Module is connected to the power
source by attaching P20 of the Magnetics Module to J20 of the power source. Also be sure to connect
the Chassis GND wire of the Magnetics Module to the CHS GND stud on the rear panel of the power
source.
5) Set the Transformer Ratio Switch of the UPC to 1.5. (Refer to the UPC-Series Operation Manual for
details. This step does not apply to systems equipped with the UMC controller.) The Transformer
Ratio switch is set to 0.0 on systems not equipped with output transformers.
6) Set the Amps to Volts Ratio Switch of the UPC to 15 for the Models 140-AMX, 160-AMX, 345-
AMX, and 360-AMX. Set the Amps to Volts Ratio Switch of the UPC to 30 for the Models 390-
AMX and 3120-AMX. (Refer to the
UPC-Series Operation Manual for details. This step does not
apply to systems equipped with the UMC controller.)
7) Calibrate the power source as stated in Section 6 of this manual.
Conversion to the 273 VAC Output Range (VR2.0) proceeds as above, except that the Magnetics Module is
wired for 2.0:1 ratio and Transformer Ratio Switch of the UPC is set for 2.0.
Likewise, conversion to the 341 V Output Range (VR2.5) proceeds as above, except that the Magnetics Module
is wired for 2.5:1 ratio and Transformer Ratio Switch of the UPC is set for 2.5.
The Transformer Ratio Switch of the UPC is set to 0.0 on systems without transformer-coupled outputs.
While the above procedure can be performed in the field, Pacific Power Source recommends that the system be
returned to the factory when transformer-coupled outputs are to be added to the system. This insures proper
connection and calibration of the entire system.