Securitron PSM_Series - Manual (Page 5)

PN# 500-16200
Page 5 Rev. D, 08/11
side of Figure 2 shows how to connect the PSM system disconnect contacts in series with the fire
alarm contacts. Any number of release switching means can be connected in this way.
6. SYSTEM TEST
It is particularly vital to test the PSM after wiring is complete. Most equipment tests
itself in a sense by working after installation. When the PSM and its associated power supply are
both working, nothing happens. No signals are received from the PSM. Therefore the only way
to assure that the PSM is functioning correctly is to test it. We recommend that these set up
tests be performed periodically with the frequency of testing being determined by the
importance of the installation.
VOLTAGE LEVEL TEST
Start with the voltage level properly adjusted so that the green "power
normal" LED is on and the voltage adjustment pot on the power supply is
centered in between the two points where the green LED just goes out. If
you have a voltmeter, adjust power supply voltage higher by one volt. If you
don't have a voltmeter, just make a quarter turn on the pot towards higher
voltage. In 30 seconds, the "power high" LED should come on, the Sonalert
should pulse and the trouble contacts should switch. Lower the voltage so
that the green LED comes on again and then momentarily press the reset
toggle. The alarm signals should clear. Repeat this test by reducing the
voltage in the same manner as you increased it earlier, with the result being
illumination of the "power low" LED and the associated Sonalert/contact
outputs. Return the supply to correct (green LED on) voltage by carefully
following the procedure set out in the last paragraph of Section 3.1.
ON BATTERY TEST
Remove line voltage from the power supply. The yellow, "on battery" LED
should come on immediately and the "on battery" contacts should switch.
Within 30 seconds, the "power low" yellow LED should come on, the Sonalert
should pulse and the "trouble" contacts should switch. Reconnect line
voltage, make sure you see the green "power normal" LED and momentarily
depress the reset toggle to clear these conditions.
BATTERY LOAD TEST
With the PSM in normal condition, momentarily depress the "load test" toggle. The yellow "load
test" LED should come on. This test will automatically run for three minutes. At the end of two
minutes, disconnect line voltage from the supply. The test should immediately terminate (the
"load test" LED will go out) and the batteries will switch into the load. Reconnect line voltage.
This shows that the test function works and that the test will automatically terminate if the
batteries are suddenly required to operate the load (owing to a line voltage failure for instance).
If the load test failed (red "loading failed" LED illuminated) before the two minutes were up on a
new installation, it may be that the batteries became discharged during storage and shipping.
The test should be repeated after the batteries have been fully charged by the power supply.
The time this will take depends on the size of the pack, but it could take as long as a day.
Assuming the first part of the battery load test was successful, repeat it by pressing the load test
toggle a second time (with all power supply/PSM connections in the normal state). To simulate
a bad battery pack, remove one of the battery clip leads temporarily. The red "loading failed"
LED should illuminate, the Sonalert should sound a steady tone and the "trouble" contacts
should switch. Reconnecting the battery clip lead should not end the alarm signals. Press the
reset to toggle to clear this condition.
SYSTEM DISCONNECT TEST
To make the PSM go into system disconnect, you have to present it with a voltage lower than
10.5V (for a 12V PSM) or 21 volts (for a 24V PSM). To accomplish this test for a 24V PSM,
proceed as follows. The 24 volt battery pack will be made up of 12 volt batteries in series.
Isolate a single 12V battery and connect it to the PSM and power supply as if it was the normal
battery pack. This connection will eventually damage the battery but will do no harm for a
RESET
POWER NORMAL
POWER LOW
POWER HIGH
LOAD TEST
LOADING FAILED
ON BATTERY
SYSTEM DISCON.
LOAD TEST