SARGENT Battery Packs 737 - Manual (Page 4)

800-810-WIRE (9473) • www.sargentlock.com • A7841B
02/26/09
Copyright © 2009, Sargent Manufacturing Company
, an ASSA ABLOY Group company
. All rights reser
ved.
Reproductions in whole or in part without express written permission of Sargent Manufacturing Company is prohibited.
SARGENT 3540-3550-3570 SERIES POWER SUPPLIES
OPERATION AND INSTALLATION INSTRUCTIONS
MODELS: 3540, 3550, 3570 (24 VOLT); 3541, 3551, 3571 (12 VOLT);
and 737-12 VOLT and 738-24 VOLT BATTERY BACKUP KITS
4
3.7 ADDING BATTERIES TO A 3500 SERIES POWER SUPPLY
To connect batteries, follow these directions:
1. Install batteries as shown (Fig. 4).
2. The voltage adjustment potentiometer V.ADJ (Fig. 1) must be set without
the batteries connected. The voltage should be read at the flying leads of
the battery connection.
3. Set the voltage output by rotating the V. ADJ potentiometer on the power
supply module to 13.5 volts for 12 volt supplies; and 27 volts for 24 volt
supplies (Fig. 1).
IMPORTANT: Cutting and removing the WARNING label is necessary to
make connection and indicates understanding and acceptance of the
conditions and settings necessary for proper operation.
4. Connect the black flying lead to battery negative (-) and the red flying lead to
battery positive (+) (Fig. 3).
3.8 CODE APPROVED WIRING METHODS
These units are Class 2 rated. This means that the individual DC outputs of the supplies (on “P” terminals) are current limited
and can pose neither a high voltage nor high energy hazard outside of the enclosure. Electrical building codes in most
jurisdictions permit Class 2 wiring to be done “in the open” rather than in conduit. To maintain the Class 2 ratings on the “P”
terminal outputs, never connect them together to obtain higher capacity. If you require higher capacity, use the “H” terminal.
The “H” terminal is high current (not Class 2) and generally must be in conduit. The line voltage wiring coming into the unit
must generally be in conduit as it poses a high voltage hazard. Be sure to check with your local building department to make
sure you are complying with applicable wiring codes before installing these units.
4. APPROVALS
All SARGENT power supplies are tested by various agencies.
Consult the label inside the supply to be advised of current approval status.
Fig. 4 Power Supply With Batteries Installed
If this happens, there is a reset procedure. First, correct the overload condition. Next, remove all current from the Polyswitch for
a period of 10 seconds by moving the associated slide switch to the “off” position. Wait 10 seconds, return the slide switch to
“on”; operation will return to normal. Without correction to the overload, the Polyswitch will trip again; de-power and re-power the
Polyswitch to reset. Table 3 provides summary information on how the operation of the power supply safety features are
used with and without batteries.
The DC fuse should only trip if there is a short circuit in the supply itself (downstream short circuits or overloads will trip individual
Polyswitches). This could occur if the F1-H terminal block somehow contacts DC negative. Alternately, if you are not using the “P”
terminals for downstream wiring but are using the “H” terminal to operate an individual, high current, downstream load, a short
circuit or overload could trip the DC fuse.
Table 3 Safety Features
AC FUSE DC FUSE POLYSWITCH AUTO SHUTOFF
Without Batteries Will trip only if internal
transformer shorts (all LED’s
will be out).
Generally will not trip. Supply
will go into auto shut-off in
case of overload (all LED’s
will be out).
Generally will not trip. Supply
will go into auto shut-off in
case of overload* (all LED’s
will be out).
Will generally occur in the
case of any short or overload
(all LED’s will be out).
With Batteries Will trip only if internal
transformer shorts (all LED’s
will be out).
Will trip if terminal F1, F2 or H
shorts to negative or in case
of overload when terminal H
is used as single output (all
LED’s will be out).
Will trip in event of individual
zone short or overload (indivi-
dual zone LED will be out).
Batteries drive into short or
overload which trips another
safety feature unless overload
current is less than fuse or
Polyswitch rating.
Note: Polyswitches can individually trip in overload condition without batteries or in special case where overload current is greater than polyswitch trip current
(2.5 Amps) but less than power supply output capacity. This is unusual. A pure short circuit is more common and this will put the supply into auto shut-off.