ELK-M1XOVR — Output Expander (8 Voltage / 8 Relays) Installation Guide

Installation guide for the ELK-M1XOVR Output Expander — adds 8 voltage outputs and 8 relay outputs to an ELK M1 or M1G Control, expandable up to 208 total outputs on the M1G (Gold) Control.

Application

The ELK-M1XOVR adds 8 Voltage outputs and 8 Relay outputs to the M1 Control. It operates on the 4-wire data bus and features flash memory for field updating of its operating firmware. The M1G (Gold) Control can expand to 208 outputs while the M1 Standard can expand to 32 outputs.

Features

• 8 voltage outputs
• 8 single-pole, double-pole relay outputs
• Operates on the 4-wire data bus
• DIP switch address settings
• Flash memory for firmware updating
• One 12-conductor "flying lead" wire harness
• Voltage outputs may be converted to relays using M1RB Relay Boards
• Status LED with diagnostic display
• Mounts in enclosure using ELK-SWG glides, SWP or SWP3 Structured Wire Plates, or double-sided foam tape

Specifications

Installation Overview

1. A single M1XOVR 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. Attach board glides to strategically placed 2-hole punch patterns using a 6/32" mounting screw and long-shafted screwdriver. Install a second glide 6" below with the grooved edge facing up.
3. Slide the expander board into the grooves provided by the glides. 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 M1XOVR. Important: if the expander is remotely mounted, refer to the M1 Installation Manual for guidance on data bus devices connected to multiple homerun cables.
3. Set address switches according to the address table below.
4. Turn the M1 Master Power Switch ON.
5. Enroll the M1XOVR to the M1 Control: enter Installer level programming, select Menu 01 — Bus Module Enrollment, press the right arrow key to start enrollment, then press it again ("edit") to view results.
6. After enrollment, use ELK RP Rules programming to assign the new outputs.

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.

Address Settings

The four "Address" switches each have a position of Off or On (binary 0 or 1) with decimal equivalents of 1, 2, 4, or 8. The total decimal value of the "On" switches sets the bus address, which determines which bank of 16 outputs is assigned to the expander. For example, Address 5 is set with switches 1 and 4 ON (1+4=5), switches 2 and 3 OFF. Output expanders ship factory pre-set to address 2 (Outputs 17–32).

* Addresses 3–13 (Outputs 33–208) are available on the M1G Only.

Important — Do Not Overload Voltage Outputs

Do not use the 8 M1XOVR voltage outputs to directly drive high (large) current loads — each output is limited to 50 mA. When calculating the M1's total current load, keep in mind that if all 8 outputs from an M1XOVR were turned on and drawing the maximum of 50 mA each, the resulting total load would be 400 mA from the M1. An auxiliary power supply is strongly recommended if the M1XOVR is remotely mounted from the M1 Control.

Using an M1DBH Data Bus Hub

Since the M1XOVR 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."

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. This can be accomplished by (1) using 4-wire cable and connecting all devices in parallel (daisy-chained) along the path, or (2) using 6- or 8-wire cable (CAT5/CAT6 ideal) and doubling back the data A & B wires on a spare pair so they connect in series to the next cable's outgoing data lines, virtually eliminating data reflection errors. This is easily accomplished using an ELK-M1DBH Data Bus Hub.

Example Applications

• LED Status Plate: The M1XOVR can drive two indicator LEDs (green and red) on an LED status plate using its voltage outputs.
• Door Strike / Garage Door Opener: Relay outputs can be wired to control a door strike or garage door opener, with an auxiliary 24VAC transformer supplying power to the load as needed.