Keri Systems SB-293 - Manual (Page 91)

Keri Systems, Inc. Technical Reference Manual – PXL-250 and SB-293
Revision 5.5 P/N: 01836-004 Page 91
11.0 System Operation
11.1 Powering the System for the First Time
NOTE: Before turning the power on for the first time, please verify the earth ground
1
has been connected at pin 3 on TB-2.
NOTE: Do not connect the 12 VDC Power Supply’s Terminal Block Output to the TB-
2 connector on the PXL-250 until you have completed all the steps in section 5.1.
When powering on the system for the first time, the installer should verify the 12 VDC
controller supply voltage and reset system RAM to ensure proper operation of the
PXL-250 controller.
11.1.1 Verify 12 VDC Supply Voltage
To verify the 12 VDC supply voltage:
1. Set the DVM to a DC volts scale capable of reading 12 VDC.
2. Turn the power supply ON.
3. Place the Red DVM lead on the power supply’s terminal block output - Pin 1.
4. Place the Black DVM lead on the power supply’s terminal block output - Pin 2.
5. Check the DVM reading. It should read between +12 VDC to +14 VDC.
6. If the DVM does not read between +12 VDC to +14 VDC, verify the power supply
is of the correct voltage, verify the cable length does not exceed 200 feet, and
verify the cable gauge is AWG 18. This problem must be corrected before power
can be supplied to the controller.
7. Turn the power supply OFF.
8. Connect the power supply’s terminal block output to the TB-2 connector on the
PXL-250 controller.
9. The controller is now ready to be powered ON.
NOTE: On long power cable runs, keep in mind the resistance in the cable itself
causes a drop in voltage at the end of the run. The power supply must be able to
account for this voltage drop.
1. Ground wire is green with yellow tracer.