Securitron TSB-3 - Manual (Page 5)

PN# 500-16400
Page 5
Rev. C, 11/07
as possible. It has no polarity. If, however, Securitron's Magnalock is used in the installation, the
MOV is not necessary as the Magnalock is internally suppressed.
FIG. 4: TSB WIRING FOR MAGNETIC LOCK
+
_
POWER SUPPLY
12-24 VOLTS
CABLE
RED (+ POWER)
BLACK (- POWER)
WHITE (RELAY COM1)
GREEN (RELAY N.C.1)
MOV
MAGNETIC
LOCK
+
_
CABLE
RED (+ POWER)
BLACK (- POWER)
WHITE (RELAY COM1)
GREEN (RELAY N.C.1)
MOV
MAGNETIC
LOCK
+
_
+
_
POWER SUPPLY
12-24 VOLTS
CABLE
RED (+ POWER)
BLACK (- POWER)
WHITE (RELAY COM1)
GREEN (RELAY N.C.1)
MOV
MAGNETIC
LOCK
+
_
TSB WIRING FOR ONE MAGNETIC LOCK
TSB WIRING FOR MULTIPLE MAGNETIC LOCKS
NOTE 1: MOV NOT NEEDED IF SECURITRON MAGNALOCK USED
NOTE 2: POWER SUPPLY MUST ALWAYS CONNECT DIRECTLY TO SENSOR
NOTE 3: IN POWER HOOK UP, POLARITY MUST BE OBSERVED
The sensor operates on 12-24 volts DC and is normally powered by the same power supply that operates
the lock. When connecting power, polarity must be observed. Note that the sensor draws 40 mA
when "at rest" and 25 mA when it is releasing the lock. As an additional safety feature, the TSB
includes a low voltage sensing circuit. The unit will keep working normally if input voltage declines
until it reaches roughly 9 volts. At that point, the TSB will automatically act as if all power was removed.
If a lock is being controlled, it will release. Input voltage could decline if the unit was being operated on
batteries and the batteries were discharging or because of a fault in the power supply.
3.2 DOUBLE BREAK WIRING
Many installations include a controlled access device such as a digital keypad or card reader. Such devices
typically have a REX (request to exit) input. When dry contacts close on this input, the entry device will
open the lock for the same amount of time that is programmed for entry. Use of the REX input for exit
has two benefits: you pick up timed exiting and also in the case of most entry controls, the REX input
must be used for exiting to avoid an alarm condition at the door.
If the REX input alone is used for exiting a safety/reliability problem will exist. If the entry
device malfunctions, exit will not be possible and people may be trapped. We therefore always
recommend double break wiring which is supported by the TSB-3 because of its two pole relay. The
TSB's NC contacts are used to break power to the fail safe electric lock while its NO contacts trip the REX
input of the controlled entry device. This releases the lock a second time, hence the term, "double break".
If the controlled entry device fails for any reason, direct exit is still possible.
3.3 ALL SECURITRON EQUIPMENT INSTALLATION
Figures 4 and 5 show "generic" use of the Touch Bar with any type magnetic lock and power supply.
Often, Securitron supplies all of these products and the installer expects an interconnection drawing for all
Securitron products. We provide such drawings in many of our manuals. In this case, the replacement of