Securitron TSH Installation And Operation Instruction Manual

 Copyright, 2000, all rights reserved • Securitron Magnalock Corp., 550 Vista Blvd., Sparks NV 89434, USA

Tel: [phone] • (800) MAGLOCK • Fax: [phone] • Website: www.securitron.com

An ASSA ABLOY Group company

PN# 500-17700 Page 1
Rev. A.1, 8/00

SECURITRON MODEL TSH TOUCH SENSE HANDLE

INSTALLATION AND OPERATION INSTRUCTIONS

1. DESCRIPTION

Securitron's Model TSH is an exit device for doors secured by electric locks. It can be employed
as a door push or pull and is particularly well suited for aluminum frame glass doors. The
assembly consists of a plastic base with an electronic touch sensor mounted inside and an
aluminum handle which is used to pull or push the door open.. When the handle is touched, a
relay in the sensor is tripped, releasing the lock. The relay contacts are double pole with the
second pole being optionally employed to shunt either an alarm system or the alarm function of
an access control system. The unit’s sensitivity is adjustable. In the unlikely event of sensor
failure, a push switch is mounted on the plastic base. Depressing the switch has the same effect
as activating the sensor by touch and therefore represents built in safety redundancy. The TSH

cannot be used outside in rain conditions.
As the TSH is normally used to allow egress on an electrically secured door, make sure

that you are complying with applicable building codes for your area. Check with your
local building department and/or fire prevention department.

2. PHYSICAL INSTALLATION

First, unscrew the handle from the plastic base (large Phillips screws) to reveal the base
mounting holes. Put the handle aside for now as initial mounting procedures concern the base.

2.1 MOUNTING HOLE DRILLING

Use the supplied template to set drilling positions for the two mounting holes. There are two
different hole diameters depending on the door type. Hollow metal doors employ supplied
machine screws and "blind nut" fasteners. The second method is to simply use wood screws (not
supplied) on a solid wood door. By "solid wood", we mean a hardwood interior rather than
pressed wood as the wood needs enough structural integrity to hold wood screws. Note however
that when the TSH is used on a solid door, the door must be core drilled to get the wire way cable
to the hinge side for take-off via the supplied door cord. For other door types, such as a chalk
filled fire door, consult the factory for additional mounting accessories. Note that the Touch
Sense Handle may not be used on a fire rated door that requires a fire rated latch (the TSH
has no latch), but sometimes fire doors are used on openings where a fire rated barrier is not
required, because the door type has been selected for other reasons (such as solidity).

For a hollow metal door, drill two 3/8" (9.5MM) diameter holes only deep enough to get through
the inner side of the door- not completely through the door.

For a solid wood door, you may elect to mount the handle with wood screws (not furnished).
We recommend 1 3/4" #14 wood screws with a hex, pan, oval or round head. Drill two 3/16"
(5MM) diameter holes to a depth of 1 1/4" (32MM).

2.2 WIREWAY HOLE DRILLING

The TSH connects to its power source and to the devices it controls via a six-conductor cable
with push-on connector (supplied). Exit from the door may be via the supplied door cord which
may be mounted at the top of the door where it is out of the way, or via any of many commercially
available transfer hinges or pivots which serve to route the wiring off the door in a concealed
manner. A 3/8" (9.5MM) wireway hole is then drilled into the door. Note that the template is
handed. The TSH can be vertically flipped to suit a right hand or left hand door but you have to
know which way the aluminum handle will face in order to correctly orient the template.

2.3 MOUNTING THE PLASTIC BASE TO THE DOOR

In the case of a hollow metal door, identify the two supplied blind nuts. The nuts are used as
follows. Insert the nuts with the knurl engaging the edge of each hole. Then utilize the supplied
collapsing tool to collapse the nuts. Use of the tool is shown in Figure 1. Then, place a tooth
washer under the head of each screw and mount the plastic base. Do not over torque.

Rev. 8/00 Page- 2

FIG. 1: COLLAPSING THE BLIND NUTS (METAL DOOR)

DOOR

TOOL

CAP SCREW

BLIND NUT

DRILL 3/8" (9.5MM) HOLE
NUT AS SHOWN

PRESS IN BLIND

COLLAPSES WHEN CAP SCREW
TURNED WITH ALLEN WRE NCH
WHILE TOOL HELD FAST
WITH BOX WRENCH

WHILE TURNING WITH ALLEN
WRENCH, PRESS IN TO KEEP

NUT SEATED IN DOOR

HOLD WITH WRENCH OR

CAP SCREW

VISE GRIP WHILE TURNING

-1/4-20 X 1"

FLAT WASHER

KNURL

2.5 ELECTRICAL CONNECTIONS WITHIN PLASTIC BASE

These connections must be made before the handle is attached to the base. First, the cable
connector must be correctly routed across the circuit board and plugged into the corresponding
connector on the board. See Figure 2 and note the correct cable routing and orientation of
plugging it in. Second, note that there is a free brown wire with a toothed ring terminal on its end
soldered into the circuit board. This is called the “antenna wire”. It must make conductive
contact with the aluminum handle to allow a person’s touch to be detected. Figure 2 also shows
the handle. A machine screw is “parked” in the antenna hole in the handle. Remove this screw,
run it through the ring terminal and then replace it in the same hole. You are now ready for
final installation of the handle on to the base.

FIG. 2: PLASTIC BASE AND HANDLE DETAIL

PLASTIC BASE

CIRCUIT BOARD

ANTENNA WIRE
WITH RING
TERMINAL

BACKUP
SWITCH

POT

ROUTE
CABLE
CONNECTOR
AND PLUG
IN AS SHOWN,
POSITION
FEMALE
CONNECTOR
TO RIGHT OF
CABLE (NOTE
RED MARKS
ON CONNEC­TOR FACE
TOWARDS
EDGE OF
CIRCUIT
BOARD)

ALUMINUM HANDLE

MOUNTING
HOLE TO BASE

MOUNTING
HOLE TO BASE

HOLE TO VIEW
LED

POT ACCESS
HOLE

ANTENNA WIRE
MOUNTING
HOLE

PLAQUE MOUNTING HOLE

LED

HANDLE MOUNTING
HOLE

MOUNTING HOLE
TO DOOR

CABLE ENTERS
DOOR OVER NOTCH

Rev. 8/00 Page- 3

2.6 MOUNTING THE HANDLE TO THE PLASTIC BASE

Reinstall the handle on to the base by using the two large flathead Phillips screws. You will be
later sliding a plastic plaque into the handle but don’t do this yet. You will first need to wire the
unit and then adjust the sensitivity.

3. ELECTRICAL CONNECTIONS

3.1 SENSOR WIRING

The TSH 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 relay has 2 amp contacts and when the handle is touched, the relay energizes. Note that the
contacts will also switch if the TSH loses power. For additional safety, the operation of the TSH
is fail safe, itself. When the TSH receives power, its control relay automatically energizes. It
deenergizes when the unit is touched. For applications releasing an electric lock, Figure 3 shows
typical connections of sensor, power supply and fail safe (locked when powered) electric locks.
Fail secure electric locks are normally not used with the TSH on required exit applications. N.O.
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 TSH. It is a black or blue disk-like component with two bare wires. The MOV
suppresses inductive kickback from the lock which shortens the life of the relay contacts if not
suppressed. It should be spliced in as close to the electric lock 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. 3: TSH WIRING FOR FAIL SAFE ELECTRIC LOCK

The sensor operates on 12-24 volts DC and is normally powered by the same power supply that
operates the electric 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 TSH 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 TSH 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.

CABLE

RED (+ POWER)
BLACK (- POWER)
WHITE (RELAY COM1)
GREEN (RELAY N.C.1)

POWER SUPPLY
12-24 VDC

+

MOV

MAGNETIC

LOCK

NOTE 1: MOV NOT NEEDED IF SECURITRON MAGNALOCK USED
NOTE 2: POWER SUPPLY MUST ALWAYS CONNECT DIRECTLY TO SENSOR.

NOTE 3: POLARITY MUST BE OBSERVED WHEN CONNECTING POWER.

OTHER CONTROL SWITCHES SHOULD BREAK OR PARALLEL RELAY CONTACT S AS NEEDED.