ELK-M1XIN — 16 Zone Expander Installation Guide

Installation guide for the ELK-M1XIN 16 Zone Expander — a hardwired zone expansion module that adds 16 EOL-supervised zones to an ELK M1 or M1G Control, expandable to a maximum of 208 total input zones.

Application

The ELK-M1XIN adds 16 hardwired zones (EOL resistor supervised) to the M1 or M1G Control. It operates on the 4-wire data bus and features flash memory which allows field updating of its operating firmware. Up to 12 M1XIN boards (16 zones each) may be connected, increasing total zones (inputs) to 208.

Features

• 16 EOL resistor supervised hardwire zones
• Operates on the 4-wire data bus
• DIP switch address settings
• Flash memory for firmware updating
• Plug-in terminal strips
• Status and diagnostic LED
• On-board EOL bus termination jumper
• Vertical mounting using ELK-SWG glides (included)

Specifications

Installation Overview

1. A single M1XIN Expander can be mounted inside the M1 enclosure on the left-hand side of the M1 board using the supplied ELK-SWG Circuit Board Glides. If additional expanders are required, they can be mounted in either an ELK-SWB14 or ELK-SWB28 enclosure — up to 8 expanders in an SWB14, up to 16 in an SWB28.
2. The ELK-SWG glides attach to the enclosure at strategically placed 2-hole punch patterns. One hole in each pattern is slightly larger (for a half-moon locator tab); the small hole is for a 6/32 type "F" mounting screw.
3. Starting at the top left corner, loosely start a 6/32" mounting screw in the small hole of the first 2-hole pattern. Place the slotted edge of a board glide under this screw so the half-moon tab fits into the larger hole and the grooved edge faces down. Tighten with a long-shafted screwdriver. Install a second board glide in the 2-hole pattern 6" below, with the grooved edge facing up.
4. Slide the M1XIN board into the grooves provided by the glides. It should slide freely — if loose or too tight, loosen a mounting screw and adjust the glide.

Wiring Connections

1. Turn the Control Panel Master Power Switch OFF.
2. Use a 4-wire cable to connect terminals +VKP, Data A, Data B, and Neg from the Control to terminals 12V, A, B, and Neg on the M1XIN. Note: if the zone expander is remotely mounted, refer to the M1 Installation Manual for important information about data bus devices connected to multiple homerun cables.
3. Set address switches according to the table below.
4. Power up the Control and the expander(s).
5. Use the keypad to access Installer Programming Mode and go to Menu 01 — Bus Module Enrollment. Press the right arrow key to start enrollment; press it again ("edit") to view the results.
6. Go to Menu 05 — Zone Definitions and enable any of the new zones. Zone numbers printed on the boards are relative to that board only; the actual zone ID is based on the starting address setting.

Note: If it becomes necessary to replace an enrolled device, set the new unit to the same address and repeat enrollment. If permanently removing a device, un-enroll it to prevent a trouble condition.

Data Bus Address Settings

The data bus address is set by a group of 4 miniature slide switches (S1–S4), each with a position of 0 or 1 (Off/On) and a decimal equivalent of 1, 2, 4, or 8. The total decimal value of the "On" switches equals the address setting, which determines which bank of 16 zones is assigned to the expander. Expanders ship factory-set to address 2 (zones 17–32).

Note: Jumper JP1 engages an on-board 120 Ohm resistor for terminating the RS-485 Data Bus. See data bus wiring instructions before use.

Using an M1DBH Data Bus Hub

Since the M1XIN connects to the M1's RS-485 Data Bus, it can be installed inside the Control or virtually anywhere along the data bus. The data bus requires only 4 wires — 2 for power, 2 for data. Due to the relatively high speed of the data bus, special wiring is necessary to avoid data reflection errors on long cables or multiple cable "homeruns." See the M1 Installation Manual for full guidance on data bus termination.

The primary goal is to have no more than 2 data bus branches (cables) running from the control, each terminated at its end with a 120 Ohm end-of-line resistor. There are two ways to accomplish this: (1) using 4-wire cable, run no more than 2 cables and connect all devices in parallel (daisy-chained) along the path, or (2) using 6- or 8-wire cable (CAT5 or CAT6 is ideal), run as many cables as needed so long as the data A & B wires are connected to a spare pair that doubles back to the control and connects in series to the outgoing data A & B lines of the next cable — keeping the data lines in a series circuit so it appears to be one long cable and virtually eliminating data reflection errors. This is easily accomplished using an ELK-M1DBH Data Bus Hub.