Elk Products EZ8 ELK-M1EZ8 Installation Manual Download Page 12

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M1EZ8 Installation and Programming

Page 12

Setting the Data Bus Address and Enrolling Device(s) into the System

Keypads and expander devices communicate over the RS-485 4-wire data bus. Each device must have a unique address
setting (from 1 to 16) within it's device type. Keypads are TYPE 1, input (zone) expanders TYPE 2, output expanders TYPE 3, etc.
The purpose of device types is so that the address numbers can be re-used in each different device type. It’s OK to have a
Keypad, Zone Expander, and Output Expander all set to address 2 and on the same data bus since each device is a different
device type.

It is NOT OK to have duplications of addresses within the same device type. I.E. Multiple keypads on the same

control cannot be set to 'like' addresses.

ADDRESS:

From the factory all keypads are set to address 1. Valid addresses are 1 to 16. The first keypad on the system

(Keypad 1) is automatically enrolled upon power up. Each additional keypad must be assigned a unique address and then
manually enrolled from “Menu 1 - Bus Module Enrollment”. (See Menu 01, for complete instructions on Bus Module Enrollment)

1. Press and hold the " * " key, followed by the F5 key . HOLD BOTH keys pressed for 5-10 seconds or until the LCD displays:

Exit when done. F1 Set Addr.

(This is Keypad setup mode)

NOTE: An alternate method is to remove power from the keypad and then power up while holding any key pressed.

2. Press the F1 key to display the current address setting.
3. Set the desired address (from 1 to 16) by using the Up or Down arrow keys.
4. Press the Exit key twice when done.

12345678901234567890123456

Auth. Required
Enter Valid Pin

12345678901234567890123456

01-Bus Module
Enrollment

ENROLLING:

Press the ELK key, then 9 (or scroll up) to display 9 - Installation Programming. Press the RIGHT
arrow key to select this menu. The Installer Program Code must be entered to access this menu.

Enter the Installer Program Code. (The default code is 172839)

The first Installer Programming menu display will be “Bus Module Enrollment”

Press the RIGHT arrow key to select this menu. “Enrolling Bus Modules” will display.

After a few seconds the display will show the total Bus Modules that are enrolled. To view the
enrolled devices and /or remove a device press the RIGHT arrow key next to the word Edit.

Press the * or Exit keys to exit Installer Programming.

12345678901234567890123456

XX Bus Modules
Enrolled, Edit

rrrrr

The ELK-M1DBHR † "Active" Data Bus Hub Retrofit splits the Controls' main RS-485 Data Bus into 4 managed RS-485 branches. Each branch
can have 2 parallel home run cables for a total of 8 home runs. The last (end of line) device on each home run should be jumper terminated to
insure proper operation and supervision.

JP1

Terminating Jumpers (JP1 - JP5)

JP1 = Terminates Input from Control
JP2 = Terminates Branch 1
JP3 = Terminates Branch 2
JP4 = Terminates Branch 3
JP5 = Terminates Branch 4
See details about Data Bus Termination.

ELK-M1DBHR †

DATA BUS HUB FOR RETROFIT

K PR

ODUCT

LDEBR

AN,

, USA

JP2

JP3

JP4

JP5

+VKP

DATA B

DATA A

NEG

RS-485 DATA BUS

BLACK

RED

GREEN

WHITE

IN
P

NT
RO

The Maximum length of the

RS-485 Data Bus or any single

Branch is 4000 ft.

Max. devices varies by product.

+VKP protected with 1.25A PTC

Mount M1DBHR inside control.

Connect it to the Data Bus terminals

using a 4 conductor cable.

RED

GREEN

WHITE
BLACK

DATA BUS
BRANCH 1

RED

GREEN

ACK

Keypad

DATA BUS
BRANCH 2

Keypad

RED

GREEN

ACK

Keypad

Single Keypad /Bus Device:

If only one (1) Keypad or Bus Device
is connected to a branch (# 1 in this
example), place terminating jumper
on the Keypad/Bus Device AND on
JP2 of the M1DBHR.

Two Keypad /Bus Devices:

If two (2) Keypad/Bus Devices are connected to
a branch (#2 in this example), place terminating
jumper on both Keypads/Device and REMOVE
jumper JP3 on the M1DBHR

Multiple Keypads/Bus Devices
(Series Connected):

If more than two (2) Keypad/Bus
Devices are connected to a
branch (#3 in this example), they
MUST be series connected on no
more than 2 homerun wires.
Place terminating jumpers on
LAST device connected to each
homerun. REMOVE jumper JP4
on the M1DBHR

ELK-M1XIN

ELK-M1XOV

Jumper

Terminate

these two

devices.

DO NOT Jumper Terminate

these devices.

ELK-M1KP

Keypad

RED

EEN

ACK

DATA BUS
BRANCH 3

DATA BUS
BRANCH 4

ELK-M1XIN

Jumper

Terminate

these two

devices.

One Keypad and one
Zone Expander:

When two (2) Bus
Devices are connected
to a branch (#4 in this
example), place
terminating jumper on
both Bus Devices and
REMOVE jumper JP5
on the M1DBHR

Jumper

Terminate

these two

devices.

Keypad

Jumper Terminate

this device AND JP2

on the M1DBHR.

DO NOT Jumper JP3.

DO NOT

Jumper JP5

DO NOT Jumper JP4.

This diagram illustrates the M1DBHR Hub as a single
branch on a Control. Terminate JP3 on Control and JP1
on the M1DBHR. If a second hub is wired to the Control
terminate JP1 on the hubs but DO NOT terminate JP3 on
Control. NEVER place more than two (2) terminating
jumpers on any branch of the RS-485 Data Bus!

Diagram for Home run wiring using M1DBHR Active Data Bus Hub

†

Not evaluated by UL

††

Not for use in UL Listed Systems