MS Sedco DH94D Installation Instructions Manual

DH94D

Sliding Pedestrian Door Presence Sensor INSTALLATION INSTRUCTIONS

Section 1

General Description

The DH94D is a floor reflection method (FRM) active
infrared presence sensor designed to provide medium
range safety detection for automatic sliding doors. The
DH94D is the ideal solution for entrances with a shallow
approach or for adding threshold protection to any sliding
door.

• Pattern depth adjustable from curtain-like
1 row up to 4 rows via dip switches.

• Pattern angle adjustable 0-5 degrees
via mechanical rotation of the sensor
housing.

• Pattern width adjustable via mechanical knobs.

• 4 frequency settings to avoid interference from other
sensors in close proximity.

• Self-monitoring microprocessor controlled diagnostics
includes automatic countermeasures againse adverse
conditions such as falling snow, rain, flying insects,
strong sunlight and electrical noises.

• 4 presence timer settings: 2, 15, 60 and 180 seconds.

Section 3

Mounting Information

1. Do not mount higher than 10 ft. (3m).

2. Do not leave any objects which may move in the
detection pattern.

3. Ensure rain or snow will not fall directly on unit.

4. Ensure snow or water can not accumulate on floor.

5. Ensure a minimum of reflected sunlight from the
floor.

6. Avoid steamy environments.

7. Use different frequency settings for sensors in close
proximity.

8. Use Infrared Safety Beams when required.

1

9'

4 5 6

2 3

(2.7m)

Section 2

Parts Identification

Connector

Mounting Holes

Accessories

DIP Switches

Sensitivity

Pattern Width

Mounting
Te m p l a t e

Mounting

Screws

Connection Cable

5 ft. (1.5m)

Cover

Use Alternate Frequency.

7

A B

8

Section 4

Mounting and Wiring

1. Using the mounting template provided, drill mounting
and wire holes.

2. Remove cover using a screwdriver or coin.

Instructions

8701 Castle Park Drive  Indianapolis, Indiana 46256

Telephone: [phone]  www.mssedco.com  [e-mail]

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DH94D

Sliding Pedestrian Door Presence Sensor INSTALLATION INSTRUCTIONS

4. Connect wiring. Push amp connectors tightly
together.

Sensor's

Cable

Red & Black = Power [Nonpole]
Yellow = Normally Open [NO]
Green = Normally Closed [NC]
White = Common

Connection

Cable

5. Place connector in holder.

6. Set desired sensor parameters as noted in Sections
5 & 7.



5. DIP Switch Settings



7. Adjusting Detection Pattern

7. Place cover on sensor and clean the sensor.

NOTE: For maximum pattern depth and width,
mount the DH94D as high as possible and use

!

the maximum pattern angle (5º).

Section 5

Dip Switch Settings

2 Pattern Depth (Rows): To adjust the pattern depth,
set switch 3 & 4 as shown.

3 Frequency: When more than two sensors are used
in close proximity to each other, to prevent
interference use alternate frequency settings. (H +
MH + ML + L = Maximum 4 sensors).

4 Monitor Mode: A snow mode is available using
switch 1. Snow Mode should only be used in
environments with heavy snowfall or other extreme
conditions.

5 “ON”: When power is first supplied to the sensor, the
DH94D performs self-diagnostics.

Section 6

Power

BEFORE APPLYING POWER, READ AND FOLLOW THESE
INSTRUCTIONS:

When power is applied, the sensor will read and store the
environmental optical parameters. This is necessary for
Presence Detection to work properly.

1. CLEAR THE AREA OF ANY UNNECESSARY OBJECTS.

2. Apply POWER.

3. Vacate the Detection Pattern immediately. While the
sensor sees ANY moving objects in its DETECTION
PATTERN, it will not proceed to the following step.

4. DO NOT enter DETECTION PATTERN for 10 seconds
(Presence Detection Setting).

5. TEST the presence feature, especially near the door.

ON

1 2 3 4 5 6 7 8

1 Presence
Timer

(Rows)

3 Frequency2 Pattern Depth

4 Monitor

Mode

5 Self
Diagnostic

1 Presence Timer: Delay is adjustable using dip
switches 1 & 2. The DH94D will detect a stationary
object only for the time period set by the Presence
Timer. The timer will reset and begin if any
movement is detected.

8701 Castle Park Drive  Indianapolis, Indiana 46256

Telephone: [phone]  www.mssedco.com  [e-mail]

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DH94D

Sliding Pedestrian Door Presence Sensor INSTALLATION INSTRUCTIONS

Section 7

Adjusting Detection Pattern

Adjust the detection pattern according to the following
diagrams:

1. Pattern Angle Adjustment.

MAX

MIN

SIDE VIEW/DETECTION PATTERN

6.6' 4.9' 3.3' 1.6' 0'

2.0m 1.5m 1.0m 0.5m 0m

0.5m

1.0m

1.5m

2.0m

2.5m

3.0m

Max Area

• The body of the sensor can be rotated from
0º to 5º (3 steps).

2. Pattern Width Adjustment.

Mask Adjustments for single and/or double doors.

6.6' 4.9' 3.3' 1.6' 0'

2.0m 1.5m 1.0m 0.5m 0m

0

1.6'

3.3'

4.9'

6.6'

8.2'

9.9'

Min Area

PATTERN WIDTH ADJUSTMENT

Section 8

Verification of Operation

1. After mounting, setting parameters and applying
power, walk test unit to verify detection pattern.

2. If the door does not operate properly, recheck the dip
switch settings and pattern adjustments.

3. After rechecking, if there is still a problem, adjust the
sensitivity.

• Adjust high (clockwise) to increase sensitivity.

• Adjust low (counter-clockwise) to decrease
sensitivity.

*****EXTREMELY IMPORTANT*****

After final set-up, test unit(s) completely to ensure that
proper coverage has been achieved (width, depth and
location of the pattern must be tested).

After the installation and operational check of the
system:

1. Place the proper labels on the door per ANSI/BHMA
A156.10 or any other applicable standard.

2. Instruct the owner of the door system operation and
how to test it. This should be checked on a daily
basis.

3. Instruct the owner on what to do if the door or any of
its components become damaged.

4. Strongly recommend to the owner that the complete
entry be inspected twice a year as part of the service
agreement.

Sensitivity

High

WIDE

6.6' 4.9' 3.3' 1.6'

2.0 1.5 1.0 0.5

1.6' 3.3' 4.9' 6.6'

0.5 1.0 1.5 2.0

6.6' 4.9' 3.3' 1.6'

2.0 1.5 1.0 0.5

0

1.6'

0.5m

3.3'

1.0m

4.9'

1.5m

6.6'

2.0m

8.2'

2.5m

9.9'

3.0m

NARROW

1.6' 3.3' 4.9' 6.6'

0.5 1.0 1.5 2.0

Detection pattern will vary according to

objects, material, color and speed.

!

8701 Castle Park Drive  Indianapolis, Indiana 46256

Telephone: [phone]  www.mssedco.com  [e-mail]

Section 9

Troubleshooting

PROBLEM 1: Door does not open.

CAUSE 1: Sensor Connector
SOLUTION 1: Tighten connector or reconnect

CAUSE 2: Power Supply
SOLUTION 2: Check that the power supply is properly
connected

PROBLEM 2: Door operates intermittently.

CAUSE 1: Sensor is very dusty or covered in water
drops, etc.
SOLUTION 1: Clean the sensor (do not use thinner or
alcohol to clean sensor)

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Sliding Pedestrian Door Presence Sensor INSTALLATION INSTRUCTIONS

PROBLEM 2: Door operates intermittently.

CAUSE 2: Sensitivity too low
SOLUTION 2: Turn up sensitivity

CAUSE 3: Detection pattern in the wrong position
SOLUTION 3: Alter the detection pattern by changing
sensor angle, dip switch settings and/or
pattern width adjustments

PROBLEM 3: Door operates by itself

CAUSE 1: Sensitivity too high
SOLUTION 1: Turn down sensitivity

CAUSE 2: Another sensor is too close by
SOLUTION 2: Change the frequency to each sensor

CAUSE 3: Sensor detects the door movement
SOLUTION 3: If the indicator LED is an Orange color,
adjust the pattern depth angle away
from the door

CAUSE 4: There is a cloth mat in the detection
pattern
SOLUTION 4: Turn the sensor power off and then on
again, and allow it 10 seconds

CAUSE 5: Detection pattern too far in front of the
door, detecting people passing by
SOLUTION 5: Adjust the detection pattern - move it
closer to the door

CAUSE 6: The condition of the monitored area is
varying (i.e., dusty, dirty, snow)
SOLUTION 6: The condition of the detection zone can
change due to heavy dust or dirty, heavy
snow or footprints being left in fresh
snow. This will cause the door to open
sometimes. Set the Presence Timer to a
short time. (See Section 5)

Power Consumption......... AC24V-2VA, AC12V-1.5VA

DC24V-55mA, DC12V-85mA

Output Contact................. Form C Relay: DC50V 0.1A

(Resistor Load)
Yellow Wire = Normally Open
Green Wire = Normally Closed
White Wire = Common

Output Holding Time........ Approx. 0.5 seconds

Presence Timer................. Limits of 2, 15, 60 and 180

seconds

LED Indication.................. RED = Detecting

GREEN = Standby
ORANGE = Abnormal

Temperature Range......... -4°F to 140°F

(-20°C to 60°C)

Weight............................... 0.43 lbs. (0.195kg)

Color.................................. Black

Accessories....................... Cable: 5 ft. (1.5m)

Mounting Template
Installation Instructions

Section 11

External Dimensions

0.39" (10mm)
Wiring Hole

2.56" (65mm)

1.18"
(30mm)

1.50" 1.57"

2.96" (75mm)

0.59”

8.27" (210mm)

0.79"

0.20"

1.18"

(30mm)

Section 12

Warranty

2.56" (65mm)

Section 10

Technical Data

Model................................ DH94D Presence Detector

Detection Method............. Floor Reflection Method (FRM)

Active Infrared

Max. Installed Height....... 10 ft. (3m)

Pattern Adjustments........ Pattern Width (wide or narrow)

Pattern Depth (1 to 4 rows)
Angle Adjustment 0º to 5º in 3
steps
Sensitivity

Power Supply.................... 12 to 24 V AC or DC ± 10%

Red & Black wires (nonpole)

8701 Castle Park Drive  Indianapolis, Indiana 46256

Telephone: [phone]  www.mssedco.com  [e-mail]

MS SEDCO guarantees this product to be free from manufacturing
defects for 3 years from date of installation. Unless MS SEDCO is
notified of the date of installation, the warranty will be in effect for
3 years from the date of shipment from our factory. If, during the
first 3 years, this device fails to operate and has not been
tampered with our abused, the unit can be returned prepaid to
factory and it will be repaired free of charge. After 3 years, the
unit will be repaired for a nominal service charge. This limited

warranty is in lieu of all other warranties expressed or implied,
including any implied warranty of merchantability, and no
representative or person is authorized to assume for MS SEDCO
any other liability in connection with the sale of our products.
All warranties are limited to the duration of this written
warranty. In no event shall MS SEDCO be liable for any special,
incidental, consequential or other damages arising from any
claimed breach of warranty as to its products or services.

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