SECTION 3
INSTALLATION
21
3.1
REMOVE INPUT SERVICE
Turn the Input Power Circuit Breaker on the front panel OFF.
Disconnect the Input Line Cord from the rear of the SCU chassis (
3.2
REMOVE COVER AND CABLING
Remove six screws from the top cover then remove the top cover.
Remove J2A from P2A.
Remove J3A of the existing controller from P3A of the LED PCB.
Disconnect J4 from the rear panel of the SCU. Reattach mounting hardware to J4.
Disconnect J5 from the rear panel of the SCU. Reattach mounting hardware to J5.
Remove J6A of the SCU from P6A of the UPC INTERFACE PCB.
Remove J3B of the SCU from P3B of the LED PCB.
3.3
REMOVE EXISTING CONTROLLER
Remove the LED PCB by removing the 4 nuts holding the LED PCB to the SCU front panel.
Remove the existing controller by removing the 2 nuts holding the UPC to the SCU front panel.
3.4
CONFIGURE UPC
The UPC TRANSFORMER RATIO and AMPS TO VOLTS RATIO must be configured to operate with the
Power Source. Setting the GPIB device address or SERIAL Interface parameters is optional depending on
whether the user intends to use the REMOTE interface.
3.4.1 CONFIGURE TRANSFORMER RATIO
NOTE:
Configuration is preset at the factory if the UPC is packaged with a power source.
Set the TRANSFORMER RATIO of the UPC to be the same as the turns ratio of the Output XFMR in the
Power Source. Refer to the Power Source Manual to determine the TRANSFORMER RATIO of the Power
Source. The ratio is set by the TRANSFORMER RATIO SWITCH on the UPC METERING PCB (
). The Dip-switches S2-8 and S1-1 thru S1-8 are binary weighted:
RATIO
DIP-SWITCH SETTING
S1-8
S1-7
S1-6
S1-5
S1-4
S1-3
S1-2
S1-1
S2-8
WEIGHT:
2.56
1.28
.64
.32
.16
.08
.04
.02
.01
NO XFMR *
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
0.50
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
1.00
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
1.50
OFF
ON
OFF
OFF
ON
OFF
ON
ON
OFF
2.00
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
2.50
OFF
ON
ON
ON
ON
ON
OFF
ON
OFF
5.11
ON
ON
ON
ON
ON
ON
ON
ON
ON
Set all bits to OFF to indicate NO TRANSFORMER installed.
TRANSFORMER RATIOs are implied as a ratio to one, e.g., a setting of 2.5 is implied as a ratio of 2.5:1.
