Chamberlain 50-HERK2 User manual

Failure to follow these safety precautions may cause DAMAGE to
sensor or objects, SERIOUS PERSONAL INJURY, or DEATH.
• This product is designed to be mounted above an overhead
commercial door.
• DO NOT use this product other than for its specified application.
• Observe ALL applicable local, national, and international door safety
standards, codes, and laws.
• ONLY trained and qualified personnel may install and initialize the
sensor.
• ONLY authorized factory personnel may perform hardware/software
changes or repairs to the product.
• The sensor should ONLY be operated from a safety extra low
voltage (SELV) system with safe electrical separation.
• ALWAYS consider the safety functions of your applications as a
whole, NEVER just in relation to one individual section of the
system.
• The installer is responsible for testing the system to ensure it
meets ALL applicable safety standards (e.g. UL 325).
• NEVER touch ANY electronic components or lenses.
• After accessing the inside of the sensor, ensure the cover/
protection seal is closed tightly to achieve designated protection
rating.
• ENSURE the commercial door operator has ALL of its monitored
entrapment protection devices installed and operational. This
sensor does NOT replace any entrapment protection devices.
MICROWAVE MOTION SENSOR
for Commercial Doors
MODEL 50-HERK2
INTRODUCTION
The 50-HERK2 is an advanced planar microwave motion sensor designed
for commercial doors and gates. The sensor can differentiate between
people and vehicles. Its two relay outputs can be programmed
independently for a multitude of applications. Additional features include
cross-traffic optimization and slow-motion detection.
CARTON INVENTORY
• 50-HERK2 sensor with pre-wired 23' (7 m) 6-wire cable
• Self-adhesive mounting template
• Instructions
TOOLS AND HARDWARE NEEDED
• Ladder
• Tape measure
• Level
• Drill with 3/16" or 5 mm bit
• 3/16" or 5 mm mounting screws (2)
• Screwdriver
• 4 AWG (5 mm diameter) wire stripper for cable sleeve
• 24 AWG (0.5 mm diameter) wire stripper for single wires
Other items recommended for installation:
• Remote control (Model 50-HERK-RC2)
OVERVIEW
Aluminum housing
Mounting bracket
Inclination angle
hand-screws (2)
Microwave planar module
Clip for wide field sensing Left button
Right button
Output 1 indicator (green LED)
Output 2 indicator (red LED)
DIP switches
Cable
Front cover
Cover screws (4)
50-HERK-RC2 remote control (not provided)
Required to access complete set of functions
for remote setup and operation
R
L

2
INSTALLATION
1. Choose a location for sensor:
• Ensure sensor is firmly mounted on a flat surface. Avoid vibrations.
• Objects such as fans, plants, flags, etc must not protrude into the
detection area.
• Make sure sensor has an unobstructed view. Obstruction can effect
performance of sensor.
• Mount sensor away from fluorescent or HID light sources.
Recommended Mounting Heights (Factory default is setting 4):
Setting 1 = 6.5' (2 m) - 8' (2.5 m)
Setting 2 = 8' (2.5 m) - 10' (3 m)
Setting 3 = 10' (3 m) - 13' (4 m)
Setting 4 = 13' (4 m) - 16.5' (5 m)
Setting 5 = 16.5' (5 m) - 19.5' (6 m)
Setting 6 = 19.5' (6 m) - 23' (7 m)
2. Remove the sensor from mounting bracket by loosening the hand-
screws.
3. Affix the self-adhesive mounting template to the wall or ceiling and
drill 3/16" or 5 mm holes in specified locations. Remove the template.
4. Route the cable through the opening in the mounting bracket and
ensure cable length is sufficient to accommodate desired inclination
angle.
5. Secure the mounting bracket to the wall or ceiling using screws.
6. Attach sensor to mounting bracket as shown. Tighten hand-screws to
secure.
• Follow ALL steps outlined in this manual in order for proper
installation of the product.
• Stop ALL traffic through the door BEFORE installing sensor.
• Ensure there is no vehicle or pedestrian traffic through the door
until sensor is installed and tested for compliance with ALL
applicable safety standards (e.g. UL 325).
• Verify proper installation of door equipment BEFORE installing
sensor.
• Shut off ALL power BEFORE attempting ANY wiring procedures.
• ALWAYS use wire terminals to terminate stranded wire ends.
• Check placement of wiring to ensure moving parts are NOT
impeded by wires.
• Make sure wiring is correct BEFORE applying power to the sensor
to avoid DAMAGE to equipment.
• Ensure door and header, including housing components, are
properly grounded to protective earth (PE).
• Ensure (e.g. by walk testing) that installation is in compliance with
ALL applicable standards (e.g. UL 325) after completion of
installation.
• If the sensor sustains damages (e.g falls), replace it with a new
sensor.
• If a satisfactory solution cannot be achieved after troubleshooting,
please contact tech support at 800-528-2806.
SPECIFICATIONS
Technology . . . . . . . . . . . . .Doppler radar with planar module: 24.05 -
24.25 GHz, <20 dBm
Detection Speed . . . . . . . . .16 mph (25 km/h) maximum for vehicles
Outputs . . . . . . . . . . . . . . . .2 Relays NO(NC): 48 Vac/dc, 0.5 A
(55VA/24W)
Mounting Height . . . . . . . . .6' 6" to 23' (2 to 7 m)
Operating Voltage. . . . . . . .10 - 28 Vac (45 - 65 Hz) 12 - 36 Vdc
Operating current . . . . . . . .Max. 75 mA
Protection class . . . . . . . . .NEMA 4 (IP65)
Temperature range . . . . . . .-22° to 140° F ( -30° to 60° C) - 0% to 95%
relative humidity, no condensation
Housing material . . . . . . . .Aluminum housing, polycarbonate cover
Dimensions with
mounting bracket . . . . . . . .Max. L x W x D = 6 3/4" x 4 3/8" x 4 3/4"
(170 x 110 x 120 mm) see mounting
template for more information
Weight. . . . . . . . . . . . . . . . .1.8 lb (820 g) including cable
Self-adhesive
mounting template
Recommended mounting location
Center over door Mounting screws
(not provided)
Cable
5" (12.5 cm) 2" (50 mm)
minimum
OPTIONAL CEILING
INSTALLATION
45˚
5" (12.5 cm)
Hand-
screw
Hand-screw
Mounting bracket

3
WIRING
Wire the sensor to the door operator as shown below.
When power has been connected to the sensor, the green and red LEDs will blink slowly. Then the green LED will continue to blink quickly.
ADJUSTMENT
INCLINATION ANGLE
After installation, adjust the inclination angle to the desired detection
pattern. Adjust the inclination angle by loosening the hand-screws on the
sides of the sensor and adjusting as shown below. Range is 0-90°, in 15°
increments as marked on the mounting bracket. 30-45° is typical for
most applications.
TILT ANGLE
It may be necessary to tilt the sensor for certain applications (not
recommended unless warranted by special circumstances). Loosen the
hand-screws and remove the sensor from the bracket. Loosen the
mounting screws and twist the bracket to change the tilt of the sensor.
Reattach the sensor to the mounting bracket.
Cable
Black
Red
White
Green
Brown
Blue
Power
Output 1 (Green LED)
Output 2 (Red LED)
Factory default for Output 2 is off
See page 6 for Output 2 settings
See page 6 for Output 1 settings
COM
NO (NC)
COM
NO (NC)
10-36 Vdc/
12-28 Vac
Red 24 V ac/dc
MECHANICAL OPERATOR
Black 24 V ac/dc
Open
Com
Green (Output 1)
White (Output 1)
Close
Com
Blue (Output 2)
Brown (Output 2)
OPTIONAL
LOGIC 3/4/5.0
OPERATOR
Red
Black
Green (Output 1)
White (Output 1)
Red
Black
Green (Output 1)
White (Output 1)
LOGIC 2
OPERATOR
24 V ac/dc
24 V ac/dc
24 V ac/dc
24 V ac/dc
Example of application
requiring tilt adjustment
Mounting screws

4
PROGRAMMING - WITHOUT REMOTE CONTROL
SENSOR FUNCTIONS
Several crucial functions can be programmed with the buttons on the sensor. All remaining
functions must be configured by the 50-HERK-RC2 remote control (not provided).
1. Remove the screws from the front cover and remove the front cover to locate the LEFT L
and RIGHT Rbuttons.
2. Briefly press the Land Rbuttons simultaneously to enter programming mode.
3. Press the Lbutton to cycle through the FUNCTIONS (below). The function increases by
one for every button press. The red LED will flash the number of the activated function.
4. Press the Rbutton to cycle through the VALUES (below). The value increases by one for
every button press. The green LED will flash the number of the activated value.
5. Briefly press the Land Rbuttons simultaneously to exit programming mode or wait 25
seconds and the sensor will exit automatically.
6. Reattach the cover.
SENSOR
FUNCTION
FUNCTIONS
(LEFT BUTTON,
RED LED)
VALUES
(RIGHT BUTTON,
GREEN LED)
DESCRIPTION
Mounting
Height 1
16' 6"-8' (2-2.5 m) Ensure proper mounting height is specified for optimum
sensor performance.
For people/vehicle separation use mounting height of 10'
(3 m) and up.
For wide field use mounting height under
13' (4 m).
After mounting height is set, most typical applications
require no further programming.
* Factory default
28'-10' (2.5-3 m)
310'-13' (3-4 m)
4* 13'-16' 6" (4-5 m)
516' 6"-19' 6" (5-6 m)
619' 6"-23' (6-7 m)
In/Out
(Output 1)
White and
green wires
2
1* Vehicles forward Only Output 1 can be programmed with the Land R
buttons. Output 2 must be programmed with the remote
control. See page 5.
* Output 1 factory default
2Vehicles backward
3Vehicles both directions
4People forward
5People backward
6People both directions
7People and vehicles forward
8People and vehicles backward
9People and vehicles both directions
Field Size/
Sensitivity 3
1X-Small field/least sensitive * Output 1 factory default
2Small field/less sensitive
3Medium field/normal sensitivity
4* Large field/very sensitive
5X-Large field/most sensitive
Wide Field
Setting 4
1* Off To use wide field sensing, install the clip on the front of
the microwave planar module. See page 5 for
instructions.
* Factory default
2ON
ADDRESSES
Addresses allow you to easily determine which sensor the remote control
is communicating with. The 50-HERK-RC2 can program up to 7
independent addresses. NOTE: See page 7 for programing addresses
by remote.
1. Remove the screws from the front cover and remove the front cover
to locate the DIP switches.
2. Set the DIP switches.
3. Replace the front cover and tighten screws.
FACTORY RESET
Press and hold the Land Rbuttons simultaneously until BOTH LEDs
turn solid (about 8 seconds). All programming settings are returned to
factory default.
Address 1
Address 2
Address 3
Address 4
Left Button
Right Button

5
PROGRAMMING - WITHOUT REMOTE CONTROL
WIDE FIELD SENSING
To use wide field sensing, the clip MUST be installed on the front of the microwave planar module and the wide field setting turned to ON. The sensor
will not function correctly if the clip is installed and the wide field setting is set to OFF. The wide field setting is only available for mounting heights up
to 13' (4m). Wide field sensing cannot be activated if a higher mounting height is selected.
1. Remove the sensor cover.
2. Insert a screwdriver under the microwave planar module and pry upwards to loosen it from the black plastic mounting bracket.
3. Remove the module from the housing.
4. Remove the clip from the back of the module.
5. Align the clip with the front of the module and carefully slide into position.
6. Re-insert the module into the black plastic brackets until it clicks into place. Ensure both sides are fully seated.
7. Ensure the module is pointed to the lowest possible angle.
8. Follow the programming instructions to turn the wide field setting to ON, see page 4.
9. Reattach the sensor cover.
PROGRAMMING - WITH REMOTE CONTROL (NOT PROVIDED)
The 50-HERK-RC2 remote control allows the sensor to be easily and conveniently programmed from the ground. The remote control reads back the
adjusted values immediately after programming and displays them on the remote control to ensure accurate programming. Flashing buttons on the
remote control indicate that the data has not been fully transmitted.
REMOTE CONTROL POWER
The remote control must be powered on before use.
POWER ON: Press and hold Gfor 2 seconds
POWER OFF: Press and hold Gfor 2 seconds
The remote control will automatically turn off after 2 minutes if no button
is pressed.
ENTER PROGRAMMING MODE
The connection between the remote control and the sensor can only be
established when the sensor is in programming mode (unlocked). For
safety reasons, programming mode is automatically deactivated 30
minutes after the last setting has been programmed. You can exit
programming mode (lock the sensor) by pressing F8followed
by 8.
Enter programming mode (OPTION 1):
Use this method if a 4-digit access code has previously been set. If no
access code has been set, use option 2 or 3 to enter programming mode.
1. Press Gto establish connection with the sensor. The sensor address
will illuminate on the keypad.
2. Press
D9and enter the previously programmed 4-digit access
code, followed by D. The sensor is now in programming mode.
NOTE: To set a 4-digit code see the table on page 7.
Infrared
transmitter/receiver
Status indicator LED
Remote control function
quick reference guide
(stored in slot on battery
compartment cover)
Numerical buttons (1 to 9)
Function buttons (A to F)
Start button
Clip for wide field sensing
Microwave planar
module

6
PROGRAMMING - WITH REMOTE CONTROL (NOT PROVIDED)
SENSOR FUNCTION REMOTE
CONTROL
FUNCTION
VALUES DESCRIPTION
Mounting Height A
16' 6"-8' (2-2.5 m) Ensure proper mounting height is specified for
optimum sensor performance.
For people/vehicle separation use mounting height of
10' (3 m) and up.
For wide field use mounting height under 13' (4 m).
After mounting height is set, most typical
applications require no further programming.
* Factory default
28'-10' (2.5-3 m)
310'-13' (3-4 m)
4* 13'-16' 6" (4-5 m)
516' 6"-19' 6" (5-6 m)
619' 6"-23' (6-7 m)
In/Out
B (Output 1)
White and
green wires
C (Output 2)
Brown and
blue wires
1* Vehicles forward Factory default for Output 2 is off.
To activate Output 2, set the hold time - press
F2followed by 1… 7(see "Hold Time"
below).
* Output 1 factory default
** Output 2 factory default
2Vehicles backward
3Vehicles both directions
4** People forward
5People backward
6People both directions
7People and vehicles forward
8People and vehicles backward
9People and vehicles both directions
Field Size/
Sensitivity
D (Output 1)
E (Output 2)
1X-Small field/least sensitive * Output 1 and 2 factory default
2Small field/less sensitive
3Medium field/normal sensitivity
4*Large field/very sensitive
5X-Large field/most sensitive
Hold Time
F1 (Output 1)
F2 (Output 2)
10.2 sec. * Output 1 factory default
** Output 2 factory default
20.5 sec.
31.0 sec.
4* 2.0 sec.
55.0 sec.
7Pulse on exit
8Output steadily on (for testing purposes
only)
9** Output steadily off
If unable to enter programming mode with the remote control or no access code is set, use one of the alternate methods:
Enter programming mode (OPTION 2):
Restart the sensor (temporarily disconnect the power supply). Programming mode is activated when the sensor is switched on.
Enter programming mode (OPTION 3):
Remove the screws from the front cover and remove the front cover. Briefly press the Lor the Rbutton to enter remote control programming
mode.
PROGRAM SENSOR FUNCTIONS
While in programming mode:
1. Press
Gto establish connection with the sensor.
2. Press the letter button of the function to be programmed (see chart below). EXAMPLE: A= mounting height.
3. The current value is illuminated on the keypad. EXAMPLE: 4=13'-16' 6" (4-5 m).
4. Press the number button of the new value. EXAMPLE: 6= 19' 6"-23' (6-7 m).
5. The new value is immediately saved and displayed on the keypad.
Programming of this function is now complete. Repeat for other functions if necessary.
NOTE: If the buttons on the remote control are flashing, the data has not been fully transmitted. Repeat the programming steps.

7
SENSOR FUNCTION REMOTE
CONTROL
FUNCTION
VALUES DESCRIPTION
Logic F3 (Output 1)
F4 (Output 2)
1*NO (Normally Opened) *Output 1 and 2 factory default
2NC (Normally Closed)
Cross-Traffic
Optimization (CTO) F5
1* OFF - Door always activates when any
crossing traffic is detected.
* Factory Default
2Low - Door occasionally activates when
crossing traffic is detected.
3Medium - Door rarely activates when
crossing traffic is detected.
4High - Door ignores most crossing traffic.
Interference Filter F6
1* OFF * Factory Default
2On - Use when electromagnetic sources
such as fluorescent bulbs, HID lights,
wireless systems, motors/inverters are
causing interference.
Slow Motion
Detection (SMD)
for people only
F7
1* OFF * Factory Default
2ON - Holds door open as long as people are
slightly moving in front of the door (LED
will blink).
Remote control
communication
address
F8
5-7* Available addresses that can be set by
remote control.
To set address 1-4 with DIP switches see
page4.
* Factory Default is 7
9Reads and sets address (1-4) set by DIP
switch on the sensor. Once address is
changed, press Gto re-establish
connection with sensor.
Delete Access
Code
Set Access Code
D9
Before setting access code, always delete the current access code.
To delete access code, press D9followed by 9999followed by D.
To set access code, press D9enter any 4-digit number from 1111- 9998followed by
D. Access code is now stored.
Lock Sensor to
Remote Control
Access
F8
8Exit programming mode (lock the sensor). Further changes cannot be made until programming
mode is entered again (see page 5).
Factory Reset A 9All settings listed in this table with * or ** will be restored.
PROGRAMMING - WITH REMOTE CONTROL (NOT PROVIDED)

© 2016, LiftMaster
01-38807 All Rights Reserved
TROUBLESHOOTING
SYMPTOM SOLUTION
People/vehicle separation does not work as expected Check mounting height and setting (more than 10' [3 m] is recommended)
Check mounting situation and environment (sensor centered above door
is best)
Check setting/clip for wide field pattern
Late detection of traffic Increase field size/sensitivity
Adjust inclination angle to move the pattern away from the door
Door reverses (sensor reacts to closing door) Adjust inclination angle to move the pattern away from the door
Reduce field size/sensitivity
Make sure sensor is secure and the sensor's mounting support does not
vibrate
Door opens without motion of a vehicle (or person) Mount sensor away from EMC interference (e.g. fluorescent tubes, HID lamps,
wireless system, motor/inverter, etc.)
Point pattern away from EMC interference
Activate interference filter
Door does not activate though sensors signals detection (LEDs) Check wire colors against output selection
Late detection or non-detection of people Reduce mounting height (less than 16' [5 m] is recommended)
Door stays open Change output logic
This device complies with Part 15 of the FCC Rules and with RSS-210 of Industry Canada. Operation is subject to the following two conditions: this device
may not cause harmful interference, this device must accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following
measures: reorient or relocate the receiving antenna, increase the separation between the equipment and receiver, connect the equipment into an outlet on
a circuit different from that to which the receiver is connected, consult the dealer or an experienced radio/TV technician for help.
Warning: Changes or modifications to this equipment not expressly approved by LiftMaster may void the FCC authorization to operate this equipment.