OPTIGUARD Door Protection Device - Unitec Parts

FEBRUARY 2013 

UT-ID 3.4.6-1 

 

OPTIGUARD p/n AAA24591AM2-UNITEC 

Installation Instructions

FEBRUARY 2013 

OPTIGUARD Installation Instructions 

212 West Newberry Road, Bloomfield, CT 

Phone (800) 328-7840 • Fax (860) 286-1625 

Quick Comparison 

OPTIGUARD (Possible Standard Mounting Configurations) 

i

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PUBLICATION CATALOGING DATA 

First Issue: February 2013 

Master Index Control Number: 

Part Number: UT-ID 3.4.6-1 

Comments or questions about the information contained in this publication should be directed to: 

UNITEC 

212 West Newberry Road 

Bloomfield, CT 06002 

(800) 328-7840 Phone 

(860) 286-1625 Fax 

Unpublished Work - © UNITEC, 2013 

ii

OPTIGUARD INSTALLATION INSTRUCTIONS 

UT-ID 3.4.6-1 

Page 3 

February 2013 

Warnings 

• This product is for use in installations in which the distance between detectors does 

not exceed 13 ft. 1 in. (157 inches or 4 meters) when the doors are fully open. 

• When power is removed from equipment, please follow Company policy and perform 

the lockout/tagout procedure. 

• If Fireman’s Service (Phase 1 or 2) is required in your area, OPTIGUARD must be 

installed on an operator with nudging features. 

• If replacing a light-ray reversal device (with a cutout switch in the COP) with 

OPTIGUARD, you must disable the cutout switch. 

• OPTIGUARDmust be active until fully closed. If a desensitizing relay contact (GH 

or similar) is present, it must be disabled. The relay is usually present in Otis 

MEMCO ® detectors and light-ray reversal devices. 

WARNING: The use and ownership of this work is defined by and subject to the legend contained on the front page of this document.


UT-ID 3.4.6-1 

Page 4 

February 2013 

Description 

The infrared light curtain OPTIGUARD consists of a transmitter (TX) and a receiver 

(RX) edge, both of which have a built-in controller. These two active parts are 

electrically connected directly to the door drive unit of the elevator and mechanically 

mounted either to the car door faces and/or to the strike jamb. 

The transmitter and the receiver edge build up a grid of infrared beams, which cover the 

door entrance to a height of 1,800 mm (6 feet). Due to the use of criss cross beams, the 

number of active beams used for the door protection is higher than the number of 

elements. 

The transmitter and the receiver require a power supply of 14 to 30 VDC. The output of 

the receiver is a push/pull (PNP/NPN) stage, which is compatible with loads connected 

to either positive (PNP) or negative (NPN) power. 

The Universal Power Supply (UPS) provides the power described above for the 

transmitter and receiver edges. It also includes a relay output that provides the N.O. or 

N.C. contact signal to the door operator circuit to reopen the elevator cab doors. The 

UPS accepts any voltage available from 20 to 265 VAC or VDC without any special 

wiring or adjustments. The polarity of DC voltage is irrelevant. 

OPTIGUARD p/n AAA24591AM2-UNITEC includes the following items: 

Qty 

Description 

1 Transmitter 

1 Receiver 

1 Multi-Voltage Universal Power Supply 

1 Transmitter Cable 

1 Receiver Cable 

2 Spacer Profiles (see p. 6) 

2 Aluminum Mounting Profile (see p. 6) 

2 Vision Shields (see p. 6) 

1 Shipping Kit. Spacer 

2 Cable Guide Wires 

1 Quick-Start Guide 



UT-ID 3.4.6-1 

Page 5 

February 2013 

Features of the OPTIGUARD 

• Very robust and extremely compact design 

• No ground connection necessary 

• Designed to last: 

‣ Gold plated contacts 

‣ Special cable that withstands more than 20 million door openings (when 

properly installed) 

• Plug-and-play edges with integrated controller 

• No link connection between transmitter and receiver due to optical synchronization 

principle 

• Suitable for side or center-opening doors 

• Suitable for metal or glass doors 

• Universal power supply 17-265 AC or DC 

• Visible light indicator (transmitter + receiver) 



UT-ID 3.4.6-1 

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February 2013 

Installation of Transmitter (TX) and Receiver (RX) 

The installation should be completed using the following sequence: 

Mount the Transmitter and Receiver 

The transmitter and receiver edges can be mounted either to the elevator cab doors 

(center-opening) or to the elevator cab door and the strike jamb (side opening). 

The black “eyes” in the aluminum profile are the optical elements that form the front of 

the edge. This front side must face the companion piece, which is mounted on the 

opposite door or on the strike jam. 

NOTE: The receiver (the edge with the blue connector) can be sensitive to "foreign" 

light. Avoid other sources of external light, including the transmitter of a 

different light curtain or single beam photo-electric system. 

While the OPTIGUARD is designed to be tolerant of bright sunlight, it is better to 

mount the receiver so sunlight does not shine directly into the receiver lenses. This 

minimizes the possibility that the receiver will be “blinded” by direct sunlight. 

Additional mounting hardware is included in the light curtain kit (e.g., mounting profiles, 

spacer profiles, and vision shields). Vision shields simply snap on over the transmitter 

and receiver to help protect them from damage. 

The transmitter and receiver can be mounted directly to the elevator cab door or strike 

jamb, or the additional mounting hardware provided can be used to create a more 

aesthetic installation or fill large gaps that may exist between the elevator cab doors and 

the hoistway doors. The following illustrations provide examples of how this mounting 

hardware can be used: 

Figure 1 



UT-ID 3.4.6-1 

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February 2013 

NOTE: It is important that the alignment angle of the emitter to the receiver is less than 

± 10° when the door is fully closed. We recommend that you keep this angle 

as close to zero as possible. 

Figure 2: Mounting Details in Center Opening Doors without Spacer 

Figure 3: Mounting Details in Center Opening Doors with Spacer 



UT-ID 3.4.6-1 

Page 8 

February 2013 

Figure 4: Mounting Details of Side Opening Doors without Spacer 

“M” Max for Given “D” 

“D” Min 

.18 in. 1.0 in. 

.25 in. 1.5 in. 

.35 in. 2.0 in. 

.44 in. 2.5 in. 

.53 in. 3.0 in. 

Figure 5: Mounting Details of Side Opening Doors with Spacer 



UT-ID 3.4.6-1 

Page 9 

February 2013 

Figure 6: Strike Mount 

Example Mounting Using Auxiliary Strike Angle/Bracket 

(where existing strike column has insufficient mounting surface area) 

NOTE: Parts called out in Figure 6 above are not included in the standard 

OPTIGUARD kit. These can be specified and ordered separately from 

UNITEC. 

• p/n AAA283AQE5 Mount “Z” Bracket—84-inch Opening, SS4 

• p/n AAA283AQE1 Mount “L” Bracket—84-inch Opening, SS4 

• p/n 124DK5 Tamper Resistant Screw, SS4 

• Type ABA316FUL_ Spacer Profile 



UT-ID 3.4.6-1 

Page 10 

February 2013 

Figure 7: Strike Jamb Mounted Detector/Emitter (option) 

Dimensions “P” that can be achieved using 

standard kit contents: 

Table 1 

Dimensions “Q” that can be achieved using 

standard kit and 1 of 3 optional brackets type 

ABA316FUL_ 

P 

Using Aluminum Profile P = .75 Q = 1.38 Using ABA316FUL2 

Using Spacer Profile P = 1.4 Q = 2.03 Q = P + .63 = 


Using Spacer Profile P = 1.4 Q = 2.4 Q = P + 1.0 = 


Using Spacer Profile P = 1.4 Q = 2.65 Q = P + 1.25 = 



UT-ID 3.4.6-1 

Page 11 

February 2013 

NOTE: It is important that the alignment angle of the emitter to the receiver is less than 

± 10° when the door is fully closed. We recommend that you keep this angle 

as close to zero as possible. 

NOTE: When using vision shields, you need to provide a minimal gap (see Figures 4– 

5) between the mounting profile of the light curtain and any perpendicular 

mounting surface immediately to the left or right of the mounting profile. 

Otherwise you will be unable to snap on the vision shield over the light curtain. 

NOTE: The light curtain is designed to have high immunity to ambient light conditions 

(100,000 Lux). Avoid exposing the receiver unit to sources of light that exceed 

this value (e.g., strobe lights, other optical sensors, and direct sunlight) as it 

may be “blinded” by the light source. 

Important Mounting Guidelines 

It is also important to observe the following mounting guidelines: 

• Never scratch or paint the optical lenses because they form the light path. 

• Do not drill additional holes into the light curtain transmitter or receiver as this may 

cause internal damage to the device. 

• Do not bend or twist the transmitter or receiver edges. 

• Oil may damage the cable. Contamination must therefore be avoided at all times. 

• Avoid external light from other infrared light sources like photo eyes, light barriers, or 

direct sunlight. 

• For installation of the transmitter and receiver: 

‣ Exit both cables in the same direction. 

‣ Do not over-bend the cables or expose them to tension. 

‣ Ensure that the cables are away from AC main power or sources of high voltage. 

‣ Do not force, stretch, or squeeze the cables. 

‣ Ensure that the cable is well fastened and routed. 

‣ Keep the transmitter and receiver clean from dust and dirt. 

‣ Avoid contamination by oil or greasy liquids. 

‣ Avoid obstructions caused by objects entering the detection area. 



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February 2013 

Cable Installation 

CAUTION: 

Route cables properly to prevent damage. 

The cables are color-coded. The transmitter cable features white connectors and the 

receiver cable features blue connectors. Make sure you connect the white cable ends 

together and the blue cable ends together. The transmitter and receiver cables are not 

interchangeable. If the white plug is connected to the blue connector (or vice 

versa), the system will not function correctly. 

Route the cables properly using appropriate mounting material, neoprene cable ties, 

and cable guide wires. 

CAUTION: If the cables are not properly fixed and guided, their lifetime could be 

reduced greatly. Cables can also be damaged due to swing or snag in the 

hoistway. Carefully follow the cable guide instructions, which can be found 

in this TIP. 

Pay close attention to proper cable installation to ensure the highest 

possible reliability and lifespan of the light curtain. A properly installed 

cable will withstand more than 20 million door movements in applications 

where the light curtain is mounted on a moving door, while a poorly 

installed cable may break after less than 100,000 door movements. 

Do not expose the cables to oil or other greasy liquids. 

Ensure that the cable bending radii are greater than 3.2 inches (80 mm). 

Universal Power Supply Installation 

The universal power supply unit should be mounted in a convenient place on the car 

top. It can be mounted either horizontally or vertically using four mounting screws (see 

Figures 14–15). 

CAUTION: The PCB is sensitive to electrostatic discharge and must be handled with 

care to prevent callbacks. Use anti-static procedures when handling it. 



UT-ID 3.4.6-1 

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February 2013 

Figure 8: Warning Label on Power Supply 

Figure 9: Power Supply Piping 

Electrical Connections 

The following electrical connections are made at the orange 6-pole terminal block on the 

Universal Power Supply. Connect supply voltage to N, P and . Make sure that the 

supply voltage is between 20 and 265 volts AC or DC. 

N AC Neutral or DC (plus or minus) COM Relay Common Signal 

P AC Line or DC (minus or plus) NO Normally Open Contact 

Protective ground NC Normally Closed Contact 



UT-ID 3.4.6-1 

Page 14 

February 2013 

Connect the source signal from the elevator door control to the COM terminal. Connect 

the return signal to the elevator door control to either the normally open (NO) or 

normally closed (NC) contact as required for your application. The following illustrations 

show the status of the relay contacts. 

Figure 10: Normally Open Contacts 

CLEAR OPENING 

Figure 11: Normally Closed Contacts 

OBSTRUCTION IN OPENING 

CAUTION: The maximum contact rating of the output relay is: 

• 250 VAC / 8 A 

• 125 VDC / 0,5 A 

• 30 VDC / 8 A 

• min. 5 VDC / 10 m 

When switching DC voltage loads higher than referenced here, use a 

pilot relay (not included). 

Connect Light Curtain to Universal Power Supply 

The light curtain system has two cables that connect the transmitter/receiver to the 

universal power supply. 

1. Connect the blue receiver cable to the blue receiver cable receptacle on the receiver 

edge. Plug the 3-pin WAGO plug into the corresponding receptacle on the UPS 

control board. 

2. Connect the white transmitter cable to the white transmitter cable receptacle on the 

transmitter edge. Plug the 2-pin WAGO plug into the corresponding receptacle on 

the UPS control board. 



UT-ID 3.4.6-1 

Page 15 

February 2013 

Power-Up and Test 

Turn on power after the installation is completed. The LED indicators should have the 

following behavior: 

• The green LED on the universal power supply should be illuminated when powered. 

• The amber LED on the universal power supply indicates the status of the light 

curtain and the output relay. It should be illuminated when there is an obstruction 

and should be dark when the detection field is clear of obstruction. 

• The green LED on the transmitter edge indicates that the transmitter is powered. 

• The amber LED on the receiver edge indicates whether an obstruction of the 

detection field has occurred. It should be illuminated when there is an obstruction 

and should be dark when the detection field is clear of obstruction. 

LED Indicator Meanings 

Edge / UPS LED Color LED On LED Off 

Receiver / UPS 

Amber 

Power OK, 

Object Detected 

or 

Not Aligned 

No Power or 

No Object 

Transmitter / UPS Green Power OK No Power 

When the light curtain is obstructed during door closure, the obstruction should cause 

the doors to reopen. 

Installation Tip 

The UPS has a built-in buzzer feature. The buzzer can be left enabled or disabled. 

When the buzzer is switched on with the sliding switch located on the universal power 

supply, an obstruction is indicated by a buzzer signal. This feature may be helpful for 

troubleshooting, which is described in the next section. 

Figure 12 provides basic connection and system behavior information. 



UT-ID 3.4.6-1 

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February 2013 

Figure 12: Basic Connection and System Behavior Information 



UT-ID 3.4.6-1 

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February 2013 

Troubleshooting 

If the light curtain does not operate as required: 

1. Cycle power to the universal power supply. 

2. Make sure you have connected the correct relay output for your application (i.e., NO 

vs. NC contact). 

3. Check whether the green indicator LED in the transmitter edge is on. If not, verify 

that the cable connection between the UPS and the transmitter is secure. 

4. Check whether the amber LED in the receiver edge is on. If so, make sure there are 

no obstacles between the transmitter and the receiver. If there are no objects, but 

the LED remains on, verify the cable connection between the UPS and the receiver 

is secure. If the output signal of the receiver is not stable during door closing, make 

sure that: 

• The cables have not been routed near sources of electrical noise generated by a 

door drive or other device. 

• No obstacles are entering the detection field during door closure. 

• The edges are properly installed so that they cannot swing or vibrate, thus 

causing misalignment. 

• The optical elements of the edges are clean and not covered by dust or dirt. 



UT-ID 3.4.6-1 

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February 2013 

Table 2: Troubleshooting Synopsis 

Problem 

What to check? 

No function 

Door remains open 

Green and amber LEDs off 

Is the power supply good? 

Is there a broken power wire? 

Defective control unit? 

Door remains open, 

free protective area 

Is light curtain correctly connected to the universal power supply? 

No / bad grounding (PE) connection? 

Are all beams uninterrupted? 

Are the sensors facing one another? 

Are the sensors/vision shields dirty? 

Are the emitter and detector poorly aligned? 

Is there excessive EMC interference e.g. door drive / fluorescent lamps? 

Random door openings 

Check for bad grounding (PE) connection. 

Are the sensors/vision shields dirty? 

Is there excessive EMC interference e.g. door drive / fluorescent lamps? 

Is the cable to the receiver or emitter damaged? Check for break in the 

cables by moving the cable by hand. 

Is there any interference between other infrared sensors with the receiver 

directly or via mirroring from shiny surfaces? 



UT-ID 3.4.6-1 

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February 2013 

Technical Data 

Input Power 

Ripple voltage 

Current Consumption 

Output type 

Relay current rating 

Table 3: Universal Power Supply 

20–265 VAC / DC 

(For the USA + Canada use "Greenfield Fittings" with voltage 

above 42 volts) 

10 % on UPS maximum 

< 200 mA @ 24 VDC 

< 60 mA @ 240 VAC 

Relay with NC / NO contacts 

AC: 

DC: 

250 VAC / 8 A 

125 VDC / 0.5 A 

30 VDC / 8 A, 

min. 5 VDC / 10 mA 

WAGO, 6 x 5.08 for power supply and output 

Connections 

WAGO, 3 x 3.81 for OPTIGUARD /Mini Rx-edge 

WAGO, 2 x 3.81 for OPTIGUARD /Mini Tx-edge 

DC output voltage 24 VDC ± 10% 

Output rated current 

200 mA 

Temperature Range 

-5° to 132° F (-20 to +55°C) 

Table 4: Light Curtain 

Number optical elements 32 

Number of optical beams 154 

Operating range 0 to 13.1 ft (0 to 4 m) 

Dimensions 

0.47 x 0.63 x 78.74 inches ( 12 x 16 x 2,000 mm) 

Protection height 

6 ft (1,800 mm) 

First beam 

0.78 in (20 mm) 

Max. Ambient Light 

100,000 Lux (DC Light) 

Protection class IP 65 / NEMA 12 

Temperature range 

-40 to +140 °F (-40 to +60°C) 

Cable length 

5 m, detachable 

Cable lifetime 

20 million movements 



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February 2013 

Dimensions 

Figure 13: UPS Side View 

Figure 14: UPS Top View 



UT-ID 3.4.6-1 

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February 2013 

Figure 15: UPS Enclosure Box (moisture-resistant) 

(dimensions in millimeters) 

Figure 16: Transmitter and Receiver Mounting 

(dimensions in millimeters) 



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February 2013 

Figure 17: Light Curtain Overview 



UT-ID 3.4.6-1 

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February 2013 

Appendix A: Related Part Numbers 

Table 5: Related Part Numbers 

Description 

Part Number 

OPTIGUARD Includes all items listed below. AAA24591AM2-UNITEC 

Receiver Edge, 32 Optical Elements 

AAA24591AM100 

Transmitter Edge, 32 Optical Elements 

AAA24591AM101 

Receiver to UPS Cable with Wago Connector AAA24591AM104 

Transmitter to UPS Cable with Wago Connector AAA24591AM105 

Vision Shield, 2100 mm (Qty = 2) 

Mounting Profile, 2067 mm (Qty = 2) 

Spacer Profile, 2100 mm (Qty = 2) 

Universal Power Supply, 17–240 VAC/DC 

Cable Guide Wires (Qty = 2) 

AAA24591AM112 

AAA24591AM113 

AAA24591AM114 

AAA24591AM115 

AAA24591AM116 

Table 6: Optional Parts (not included in standard OPTIGUARD kit) 

Description 

Part Number 

“L” Angle (for strike)*—84 in. Opening, SS4, w/ Hardware AAA283AQE1 

“Z” Bracket (for strike)*—84 in. Opening, SS4, w/ Hardware 

Bracket, Mounting, A = 0.56 in. 



Molding, Astragal, Type A, 192 in. Roll, Self-Stick (Mod only) 

Molding, Astragal, Type A, 720 in. Roll, Self-Stick (Mod only) 

Molding, Astragal, Type B, 192 in. Roll, Self-Stick (Mod only) 

Molding, Astragal, Type B, 600 in. Roll, Self-Stick (Mod only) 

Tamper Resistant Screw for Auxiliary Strike Angle or “Z” 

Bracket Mounting, SS4 

AAA283AQE5 

ABA316FUL2 

ABA316FUL3 

ABA316FUL4 

AAA402ZV1 

AAA402ZV2 

AAA402ZV3 

AAA402ZV4 

124DK5 

* Other strike shapes in brass and other lengths are available by special order.

OPTIGUARD Door Protection Device - Unitec Parts

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