Securitron TSB-3 - Manual (Page 4)

PN# 500-16400
Page 4
Rev. C, 11/07
technique that is possible on solid doors is to recess the sex bolts into the door by using a 1/2" (12.5 mm)
counter bore.
In the case of a solid wood door, if you have elected to use wood screws (not furnished), place a tooth
washer under the head of each screw and mount the bar. Figure 3 provides a visual reference for these
three methods.
2.6 CUTTING THE BAR
If the bar needs to be shortened to install properly, it can be easily cut in the field. It must be cut from
the end which does not mount the sensor. Remove the end piece completely by unscrewing the two
self tapping screws that hold it to the bar. It is better to remove both end pieces so as to avoid damaging
the sensor circuit board by metal filings. Note that when you remove the second end piece which carries
the sensor, the sensor will slide out easily with the end piece. There is, however, a ring terminal which
circles one of the end piece-to-bar mounting screws. This ring terminal is connected by a wire to the
circuit board. This connection is how the sensor "sees" the bar. When you reinstall the end piece, be sure
to reinstall the ring terminal.
FIG. 3: END VIEW SHOWING USE OF DIFFERENT FASTENING METHODS
THREE MOUNTING METHODS DEPENDING ON DOOR TYPE
METAL DOOR
SOLID WOOD DOOR
WITH WOOD SCREWS
SELECTED
THROUGH BOLT
+ SEX BOLT MOUNTING
BLIND NUT
2 1/4" (57MM)
MACHINE
SCREW
2 3/4" (70MM)
WOOD SCREW 3 1/2" (90MM)
MACHINE
SCREW
SEX
BOLT
NOTE: ALWAYS PUT TOOTH
WASHER UNDER SCREW HEAD
Cutting is ideally performed by a band or cut-off saw to produce a neat result. However, with care, a
hacksaw can be used. The cut need not be perfect because the bar "pockets" into the end cap. This hides
a poor cut from viewing from the front. The rear of the bar is not pocketed, however, and if the bar is
being mounted on an aluminum frame glass door, a sloppy cut will be apparent from the outside and will
worsen the appearance of the installation.
3. ELECTRICAL CONNECTIONS
3.1 SENSOR WIRING
The TSB-3 has 6 colored wires which are for sensor power and DPST relay output:
Red - "+" DC Power
Black - "-" DC Power
White - Relay Common, Pole 1
Green - Relay Normally Closed, Pole 1
Blue - Relay Common, Pole 2
Orange - Relay Normally Open, Pole 2
The cable connector is plugged into the male connector on the circuit board so that the cable routes
directly back into the end piece. The relay has 2 amp contacts and when the bar is touched, the relay
changes state. For additional safety, the operation of the TSB is fail safe, itself. When the TSB
receives power, its control relay automatically energizes. It deenergizes when the unit is touched. For
releasing a magnetic lock, the following drawing (Figure 4) shows typical connections of sensor, power
supply and fail safe (released when powered) lock. Fail secure electric locks are normally not permitted
for use with the TSB on required exit applications. NO contacts, however, are available from the sensor
for special signaling applications and for integration with the Request to Exit (REX) function of an access
control installation, as will be explained. Note installation of the MOV in parallel with the electric lock. The
MOV is supplied loose with the TSB. It is a black or blue disk-like component with two bare wires for
connection. The MOV acts to suppress the lock’s inductive kickback which will greatly shorten the life of
the relay contacts if not suppressed. To work properly it should be spliced in as close to the electric lock