Instruction Manual

ManualsBrandsControlled Products Systems Group ManualsSensorsE-931-S45RRQ

Note: If a shiny object, such as a chrome-plated item or

something with reflective tape, is within close proximity of

the path of the IR beam the sensor may not be able to

detect the passing object. In this case it may be necessary

to turn the sensitivity knob counter-clockwise until the

desired sensitivity setting is obtained.

Installation:

1. Mount the reflector and the sensor so they face each other.

2. Connect power to the sensor. Typically the red LED will turn

ON indicating that the sensor and reflector are not yet

properly aligned. If the yellow LED is ON (red LED OFF), it

indicates that the sensor and reflector are aligned (although

it still may be necessary to slightly adjust the alignment).

3. Turn the sensing range knob to Max.

4. To find the correct alignment, slowly adjust the angles of the

sensor (and/or reflector) up, down, left or right.

Note: Correct alignment is reached when the red LED turns

OFF and the yellow LED turns ON.

Note: If both LEDs are OFF, the sensor is at the edge of sensing

the signal, and may not work properly.

Adjusting the Sensing Range and Response Time:

After the sensor and the reflector have been properly installed,

the next step is to adjust the approriate setting for the sensing

range and response time. Open the top cover of the sensor as

shown in Fig. 2.

Adjusting the Sensing Range :

Starting from the Max. position, slowly turn the knob counter-

clockwise until the red LED turns ON. This position represents

the weakest point of the infrared signal for this particular

application. The setting of the sensing range must be a little

higher than this point, so turn the knob clockwise to have a

little distance from the weakest point. The ideal setting is

midpoint between the weakest point and Max.

Note: When turning the knob counter-clockwise from the Max.

position, if the weak point is near the Max. position then

the knob should be set at the Max. position.

Adjusting the Response Time :

Adjust the knob according to the requirements of each

application, this may require an interruption test to achieve the

ideal result. For example, to avoid false alarms from falling

leaves and passing birds, adjust the knob to a level wherein the

sensor will not trigger from these interruptions.

Note: After the sensing range and response time have been

adjusted, make sure to close the top cover securely to

prevent water from entering the sensor.

E-931ACC-R1Q

Square Reflector

53 x 63 mm

E-931ACC-BLS1Q

Sensor Mounting

Bracket

Installation and Adjustment:

LED Functions:

• Red LED

When ON, it indicates the sensor is triggered.

• Yellow LED

When ON, it indicates that the sensor is

properly aligned with the reflector, and the sensor is not

triggered.

Sensing Range Adjustment Functions:

The Sensing Range adjustment knob sets how powerful the

infrared signal emitted by the sensor is.

• Min. Setting

The infrared power signal emitted by the

sensor is at its minimum or weakest.

• Max. Setting

The infrared power signal emitted by the

sensor is at its maximum or strongest.

The objective of this function is to set the appropriate power of

the infrared signal corresponding to the distance between the

sensor and the reflector of a particular application.

The factory default setting is set at "Max.".

Note: If the infrared signal is too strong, the sensor may not

trigger. If the infrared signal is too weak, the sensor

may be susceptible to false alarms.

Response Time Adjustment Functions:

The Response Time adjustment knob sets how long the beam

can be interrupted before triggering.

• Min. Setting

The interrupt time is set at 5ms (high

sensitivity) and is suitable for detecting fast moving

objects, but is more susceptible to false alarms.

• Max. Setting

The interrupt time is set at 100ms (low

sensitivity) and will reduce false alarms, but fast moving

objects may not trigger the sensor.

The objective of this function is to set the appropriate interrupt

time of the sensor corresponding to the sensitivity required of

a particular application.

The factory default setting is set at "5ms".

E-931ACC-BLR1Q

Square Reflector

Mounting Bracket

Testing:

1. Power up the sensor. The yellow LED should be ON; the red

LED should be OFF.

2. Pass the object to be detected between the sensor and

reflector. The red LED should turn ON and the yellow LED

should turn OFF. This indicates that the object has been

detected.

Wiring:

Optional Accessories:

E-931ACC-RC1Q

Round Reflector

82 x 9 mm

E-931ACC-HR1Q

Reflector Hood for

Round/Square Reflector

Gate

¤¤¤¤¤¤¤¤¤¤¤

Garage

door

¤¤¤¤¤¤¤¤¤¤

¤¤¤¤¤

¤¤¤¤¤¤¤¤

Mounting the Sensor:

Sample Installations:

Gate

Main

entrance

door

Store front door

¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤

Black (N.O.)

Gray (N.C.)

White (COM)

Relay Output

Multi-voltage

circuit

Brown

Blue

]

12-250VAC or VDC

polarity not important

Connection (5 wires)

Note:

1. Can be connected to AC or DC voltage.

2. Maximum cable extension length is 325 feet (100m).

Vehicle detection Factory assembly line

a. For E-931ACC-BLS5Q bracket

b. For E-931ACC-BLS1Q bracket

E-931ACC-BLS5Q

Sensor Mounting

Bracket

Yellow LED Red LED

Response

Time

Sensing

Range

5ms

100ms

Min Max

Fig. 1

Fig. 2