TYCO SAFETY PRODUCTS
QE90 BATTERY INSTALLATION / WIRING GUIDE
Version 1.00
18 April 2007
Page 3 OF 20
1.
PROCEDURE
It is suggested that a QE90 Panel should be first tested with mains only i.e. with the batteries
disconnected. This will provide greater protection in the event of a 24V wiring problem.
However, do not to activate many speaker or strobe outputs at the same time, or the power
supply may shutdown as its current limit could be exceeded.
When installing the batteries :
1.
Unplug the power supply (or supplies) from the mains.
2.
Turn off all circuit breakers and switches on all power supplies.
3.
Unplug both ribbon cables from the Signals Interface Card (SE9004 or SPIF9709)
and if the system has an ECM, unplug the 34 way ribbon cable from the ECP to the
ECM. The batteries will then be floating relative to the chassis (as long as there are
no shorts to earth in field wiring), and an accidental short from the chassis to any
single battery terminal will have no effect.
4.
Wire up the batteries as described herein.
5.
Check the voltage of the unswitched 24V output from the power supply. Check the
voltage on pin 3 of the ECP power connector is in the range +18V to +27V relative to
pin 4 on the same connector. Note pin 4 is the one with the black wire attached. (The
colour of the wire attached to pin 3 may vary.)
6.
Plug the ribbon cables removed in step 3 back in.
7.
Plug the power supplies back into the mains.
8.
Turn on the mains power.
9.
It is suggested that you wait for the batteries to charge somewhat before further
testing. Measure the unswitched voltage again as described in step 5 above, and
wait for it to exceed 26.0V.
10.
Turn on the remaining switches on the power supplies, and check the QE90 system
from step 4 of Section 17.3 in LT0088 “QE90 Installation and Commissioning
Manual”.
2.
SAFETY
NOTICE
Avoid shorting out batteries when fitting and wiring. Consider covering tools with heatshrink,
insulating tape, or other insulating material, as touching the spanner to the QE90 cabinet or
bve and –ve battery terminals could cause a short. Protecting the loose end of
leads when wiring the batteries is also advisable. Small zip-top bags or masking tape are
useful for this purpose.
Suggested Tools : 4” Crescent and 8mm or 5/16” A/F Nut driver