Edwards Signaling 129 User Manual

www.edwardssignaling.com

P/N 13140 • REV C01 • REB 21FEB13

Warning! To avoid switch failure determine the actual load of the switch circuit and
take steps to protect the switch from voltage spikes, current inrush and line/load
capacitance using the following recommendations.

• Surges from coils, motors, contactors, solenoids and tungsten filaments. Transient
protection, such as back-to-back zener diodes (Transorb) or an RC network, is
recommended for such loads to ensure that maximum ratings of the switch are
not exceeded.

• Line capacitance and load capacitance. An in-line resistor can be added in series
immediately before the load to limit the inrush current. The resistor can only be
added in series with the last wire just before the load. The voltage drop and the
power rating of the resistor must also be calculated as follows:

Voltage drop = I • R

2

Watts = I
( I = maximum continuous current of the load)

To verify switch operation with an ohmmeter:

Set range at 20 mega ohms (switches with triac output, set ohm range at 20 kilo
ohms). For a normally open switch, the meter will read a high impedance with the
actuator away. It will read very high to infinity range (triac switches will read high kilo
ohm to infinity range) with the actuator within sense range. You will see the opposite
reading for a normally closed switch.

• R

GuardSwitch™ Series 100

Non-Contact Interlock/Position Switch

129

129-2N-06(J)
129-2N-12(J)
129-3N-12(J)
129-6N-06(J)
129-6N-12(J)
129-7N-06(J)
129-7N-12(J)
129-9N-06(J)
129-9N-12(J)

129-6N-06(J)(D6)
129-6N-12(J)(D6)
129-6N-14(J)(D6)
129-6N-06(J)(DG)
129-6N-12(J)(DG)
129-6N-20(J)(DG)
129-_________
Actuator_____

Dimensions

2.76''

7.0cm

0.47''

1.19cm

0.08''

Figure 1

0.20cm

Switch Actuator

Figure 2

Barrel Switch Mounting Configurations

Three configurations are appropriate for recessed interlock applications. Moving the
actuator parallel to the switch can result in on/off/on signal if the actuator passes by
the switch rather than coming to rest in proximity to it. This is NOT a recommended
configuration for interlock/position applications. The "T" configuration results in
non-actuation.

End-to-End Side-by-Side

OK OK NO

M12 x 1

sensing

faces

1.40cm

0.63''

1.60cm

Perpendicular

OK

0.55''

“T”

Installation

1. Using the following guidelines, determine a suitable mounting location:

• The switch and actuator must be within the listed sense range. See Ordering/
Electrical Specifications.

• The sense ranges are based on switch and actuator aligned so the sensing
surfaces are face to face. (See Figure 1.)

Important: When mounting in proximity to ferrous material (steel), the sense
range can be reduced 50% minimum depending on the shape and type of
material. Test the switch in specific applications to determine the actual
sense range.

•When mounting on a ferrous material (steel), a 1/4" nonferrous (plastic or
aluminum) spacer may be used under the actuator and switch to restore most of
the lost gap.

•When mounting on a hinged gate or door, mount the switch and actuator at least
6" away from the hinges to achieve the maximum movement.

• The switch and actuator must move in one of the approved directions.
See Figure 2.

• The actuator can be mounted at a 90° rotation to the switch.

•Do not mount for parallel actuation. An on-off-on signal may result when the
actuator passes by the switch.

2. Mount the switch on the stationary frame of the machine and connect the electrical

P/N 13140 • REV C01 • REB 21FEB13

wiring. When mounting the switch on an ungrounded machine, connect the ground
lead to one of the mounting screws.

3. Mount the actuator on the movable guard, door, or gate.

4. Slightly over-drill holes for easy insertion. The switch and actuator should easily
slide or screw into the predrilled holes – DO NOT force or hammer.
This may damage switch.

Wire Color Code

Black COM

File E 122942 LR89176

White N.O.

Red N.C.

General Specifications

Enclosure Stainless Steel Threaded Barrel

with 2 Panel Nuts

Dimensions M12 dia. x 1 Thread x 70mm Long

Temperature Range -40°F to 180°F (-40°C to 80°C)

Environmental Hermetically Sealed Contact Switch

Sealed in Polyurethane

NEMA Rating 1, 2, 3, 4X, 5, 6, 12

Protection Class IP 67

Response Time 1 msec

Life Cycles 100,000 Under Full Load;

Up to 200,000,000 Under Dry Circuit

Lead Types/O.D. 22/2 or 22/3 Flying Leads (V)/0.05" (0.13cm)

22/2 Jacketed (J)/0.16" (0.40cm)

22/3 Jacketed (J)/0.164" (0.41cm)

22/4 Jacketed (J)/0.187" (0.47cm)

18/2 Jacketed (J)/0.24" (0.62cm)

UL/CSA All Models