Earth Ground Rod Installation
for all RS-485 devices
Rev 2.0
Proper grounding gives an electrical charge, like an electrical static discharge or a near lightning strike, a path from which to dissipate its energy safely into
the earth.
Without this path, the intense energy generated by lightning could be directed towards the telephone entry system. Although nothing can absorb the
tremendous power of a direct lightning strike, proper grounding can protect the equipment in most cases.
The type and length of earth ground rods vary by region. Contact the building inspector’s office in the municipality where you plan to install the unit for
correct grounding materials and installation procedures.
Before digging, contact local underground utility locating companies.
Avoid damaging gas, power, or other underground utility lines.
The earth ground rod must be located within 3 feet from the telephone entry system. Use the proper type earth ground rod for your local area.
RS-485 Keypad
for Icon26, LC and VF Dial Code systems
Model: EKP-485
Rev 2.0
Opened Keypad
Please read this entire manual before installation.
s RS-485 Keypad is not a stand alone device. It must be connected to Icon 26, LC
and VF Dial Code systems for operation.
s RS-485 Keypad has its own independent strike relay. No relay activation takes
place on main telephone entry system.
s LiftMaster has provided surge suppressor modules to protect the keypad against
lightning damage.
The ground wire must be a single, whole piece of wire. Never splice two wires for the ground wire. If you should cut the ground wire too short, break it, or
destroy its integrity, replace it with a single wire length.
The earth ground rod must be located within 3 feet from the equipment being grounded.
to equipment to be grounded
12 gauge wire
Closed Keypad
For the correct depth,
consult the local code
POWER INPUT
SURGE SUPPRESSOR
POWER INPUT
SURGE SUPPRESSOR
P/N: TAPISS
RS-485
SURGE SUPPRESSOR
TRANSFORMER
12 VAC, 20 VA
Warning:
LiftMaster is not responsible for improper installation or failure to comply with all necessary local building codes.
114A2920
The Chamberlain Group, Inc., 845 Larch Avenue, Elmhurst, Illinois 60126-1196 1-800-528-2806 www.liftmaster.com
Do not share keypad's
transformer with any other
devices.
RS-485
SURGE SUPPRESSOR
P/N: TAR4SS
The Chamberlain Group, Inc., 845 Larch Avenue, Elmhurst, Illinois 60126-1196 1-800-528-2806 www.liftmaster.com
RS-485 Keypad Wiring and Operating Instructions
(Drawing not to scale)
POWER INPUT
WIRING INSTRUCTIONS
1A
SURGE SUPPRESSOR
Within 5 ft
1
POWER
1C
12 VAC
1B
BLACK:
12 VAC
1B Connect the
GREEN: CHASSIS
GROUND
5SE0ROVIDED
4RANSFORMER
12 VAC, 20VA
1
OUT
IN
side black and white wire terminals of the power
input surge suppressor module to the power input of the keypad.
0OLARITYDOESNOTMATTER
1D
IN
OUT
1C Connect the CCCCCCCside
12 VAC terminals of the power input surge
RS-485
SUPPRESSORMODULETOTHETRANSFORMEROUTPUT0OLARITYDOESNOTMATTER
Note: Center terminal is not used.
Use separate transformer. Maximum distance from transformer to
keypad should not exceed 300 feet, using 18 gauge wire.
2A
SURGE SUPPRESSOR
Within 5 ft
22 AWG Shielded Wire
Use Separate
4RANSFORMER
12 VAC, 20VA
POWER INPUT PORT CONNECTION
1A Install power input surge suppressor module within 5 ft of keypad.
WHITE:
OUT
+
–
Gnd
2
RS-485 (+)
2C
+
IN
BROWN: RS-485 (+)
RS-485 (-)
BLUE: RS-485 (-)
RS-485 GND
YELLOW: RS-485 GND
1D Connect the green “Chassis Ground” of the power input surge suppressor
–
2B
module to the earth ground rod.
Gnd
GREEN: CHASSIS GND
2
2D
RS-485 Wire Run
Within 3 ft
of Keypad
RS-485 COMMUNICATION PORT CONNECTION
2A Install RS-485 surge suppressor module within 5 ft of keypad. (Use 22
AWG twisted pair shielded wire)
IN
2B Connect the CCCCCCCside
of the RS-485 surge suppressor module to the
RS-485 port of the keypad.
RS-485 (+)
RS-485 (-)
RS-485 (Gnd)
12 AWG Wire
RS-485 (+)
RS-485 (-)
RS-485 (Gnd)
2C Connect the CCCCCCCside
OUT
of the RS-485 surge suppressor module to the
POWER INPUT
SURGE SUPPRESSOR
OUT
side of the next RS-485 surge suppressor module in the wire
run. (Use 22 AWG twisted pair shielded wire)
RS-485 (+)
RS-485 (+)
RS-485 (-)
RS-485 (-)
RS-485 (Gnd)
RS-485 (Gnd)
3
P/N: TAPISS
7
RS 485
SURGE SUPPRESSOR
P/N: TAR4SS
Additional device on
RS-485 wire run
(To show wiring example)
+ – Gnd
Refer to Earth Ground Rod
Installation on the back page
12 AWG Wire
6
WARNING
U 4O !6/)$ lightning damage install
Refer to Earth Ground Rod
Installation on the back page
Access Granted
LED Indicator
the provided surge suppressor
modules and connect ALL “chassis
ground” wires to earth ground rod.
0OWER,%$
Indicator
U /NPOWERUP,%$
U Install surge suppressors in water
will flash and Beeper
will Beep the software
VERSIONTHE+EY0AD
is currently running.
resistant enclosure.
s Maximum distance from the last RS-485
device to the Icon 26, LC and VF Dial Code systems
is 4000 Ft.
module to the earth ground rod.
3
4URNhONv4ERMINATOR3WITCH/.,9FORLASTSLAVEDEVICEINSTALLEDON23
wire run.
4
Set Unique Device ID Number between 000 and 030 and then power up the
DEVICE 4HE DEVICE -534 BE UNPLUGGED powered down) to change ID
number.
5
4HE3TRIKE2ELAYCANBEUSEDTOCONTROLAGATEOPERATORMAGNETICLOCKORA
SOLENOID 4HE Strike Time for this relay is programmable using the phone
entry system's “Gate Strike Time” setting.
6
/PTIONAL#ONNECTTHETWOEXITSWITCHWIRESTOTHEEXITSWITCHINPUTONTHE
KEYPAD0OLARITYDOESNOTMATTER
Note: When exit switch is engaged, strike relay is activated for 5 seconds.
7 Important! Ground the keypad using the provided “chassis ground”
12
AWG wire.
OPERATING INSTRUCTIONS
s&ORresident keycode entry: Enter 6 digit code on keypad.
Icon 26, LC and VF Dial Code systems
s Up to 31 RS-485 devices supported
2D Connect the green “Chassis Ground” of the RS-485 surge suppressor
5
s&ORutility keycode: Enter “#” key followed by 4 digits on keypad.
9
0
1
100'S
Select a device ID number
between 000 and 030 ONLY!
9
0
1
10'S
4
9
0
1
1'S
s4OCLEARENTRIES0RESSh*” key
sValid entry code response: Green LED on and a single long beep
during strike relay activation.
sInvalid entry code response: Green LED remains off and three (3)
short consecutive beeps.
For toll free technical support: 1-800-528-2806
4HE#HAMBERLAIN'ROUP)NC,ARCH!VENUE%LMHURST)LLINOISwww.liftmaster.com