Lenel m3000, Installation Manual, Page: 79 / 118

M3000 Installation Guide
79
CHAPTER 7
Pre-Power Up Testing
Follow the steps below before powering up the controller.
1.
Measure the AC power supplied to the power supply (110 VAC or 220 VAC, depending on the
power supply installed). The power supply must have a dedicated circuit breaker. Do
not plug
into an outlet that is controlled by an on/off switch.
2.
Test the reader power wiring to determine if a short circuit exists. Unplug each reader connector
and measure, from the reader connector going out to the readers between pin 1 to chassis and
pin 1 to pin 2, with an ohmmeter.
Result : A measurement of less than 100 ohms indicates a short circuit. Correct this condition
before powering up.
3.
If a 16DO board is installed, check for a short circuit. Unplug each connector and measure from
chassis ground to all pins on the DO connector.
Result : A measurement of less than 100 ohms indicates a short circuit. Trace out the wiring to
locate the short circuit.
4.
Reconnect all connectors.
5.
Disconnect power input connector J6 on the Power/Communications board.
6.
Use a voltmeter to measure input voltage across J6. Pin 3 = +, pin 4 = Ground.
Result : If the meter reads -12 to -15 VDC, the wires are reversed.
Solution : Reverse the wires on pins 3 and 4 so pin 3 is the + voltage. The meter should read +12
to +15 VDC.
7.
Reconnect the J6 connector.
Once you have completed these steps, power up the M3000.