Mircom OpenBAS-LC-NX12R Installation Manual

OpenBAS-LC-NX12R

Lighting Controller

Installation Manual

LT-6180 Rev. 2.3
June 2017

Table of Contents

1.0 Introduction 6

1.1 OpenBAS-LC-NX12R Lighting Controller ...................................................................... 6

1.2 Features ......................................................................................................................... 6

2.0 Overview 7

2.1 OpenBAS-LC-NX12R Components ............................................................................... 7

2.1.1 Controller ....................................................................................................................... 7

2.1.2 Accessories .................................................................................................................... 7

2.1.3 Compatible modules ...................................................................................................... 8

3.0 Installation 9

3.1 Parts of the Enclosure .................................................................................................... 9

3.2 Controller Board Connections ........................................................................................ 12

3.3 Installing Accessories .................................................................................................... 13

3.3.1 Memory Expansion Card (OBS-ACC-32K128) and Wireless Receiver

(OpenBAS-HV-RF433R) ................................................................................................ 13

3.4 Reset and Download Buttons ........................................................................................ 13

3.5 USB ................................................................................................................................ 14

3.6 Battery ............................................................................................................................ 14

3.7 Enclosure Dimensions ................................................................................................... 15

3.8 Assembly ....................................................................................................................... 16

3.9 Mounting the Enclosure ................................................................................................. 17

4.0 Field wiring 19

4.1 To Wire the Terminals .................................................................................................... 19

4.1.1 Required Tools ............................................................................................................... 19

4.1.2 Installation Tips .............................................................................................................. 19

4.2 Power Supply Connection .............................................................................................. 19

4.3 Manual Override Terminals ............................................................................................ 21

4.4 Jumper J1 ...................................................................................................................... 22

4.5 Universal Input ............................................................................................................... 22

4.5.1 Tips for the universal input ............................................................................................. 23

4.5.2 Analog Input ................................................................................................................... 24

4.5.3 Resistive 1000 Ω Temperature Sensor .......................................................................... 26

4.5.4 Measuring 24 VDC with the Analog Input ...................................................................... 27

4.5.5 Digital Input .................................................................................................................... 27

4.6 Outputs .......................................................................................................................... 29

4.7 Adding OpenBAS-LC-NX12R to an Ethernet Network .................................................. 30

4.8 Networking OpenBAS-LC-NX12R Controllers together ................................................. 31

4.8.1 X1 and X2 Ports ............................................................................................................. 31

4.8.2 Field Bus Connection ..................................................................................................... 32

5.0 Specifications 33

6.0 Master Warranty and Warning Information 35

3 (40)

List of Figures

Figure 1 Parts of the enclosure .................................................................................................... 9

Figure 2 Tabs on enclosure .......................................................................................................... 10

Figure 3 Lift tabs and remove circuit board .................................................................................. 11

Figure 4 Controller board connections ......................................................................................... 12

Figure 5 Connections for display, memory expansion cards, and wireless receiver .................... 13

Figure 6 Enclosure (back view) .................................................................................................... 15

Figure 7 Fit the circuit board in enclosure .................................................................................... 16

Figure 8 Enclosure mounted on DIN rail ...................................................................................... 17

Figure 9 Enclosure mounted on DIN rail (back view) ................................................................... 18

Figure 10 Power supply - 24 VAC or 24 VDC ................................................................................ 20

Figure 11 Manual Override Terminals ............................................................................................ 21

Figure 12 Manual override switch wiring ........................................................................................ 21

Figure 13 Jumper J1 ...................................................................................................................... 22

Figure 14 Universal input ............................................................................................................... 23

Figure 15 Measuring VDC .............................................................................................................. 27

Figure 16 Digital input voltage range .............................................................................................. 28

Figure 17 Outputs ........................................................................................................................... 29

Figure 18 Connection to a latching lighting relay ........................................................................... 29

Figure 19 OpenBAS-LC-NX12R with 12 lighting relays ................................................................. 30

Figure 20 Connecting OpenBAS-NWK-ETH3 to OpenBAS-LC-NX12R ........................................ 30

Figure 21 Networking with the X1 and X2 ports ............................................................................. 31

Figure 22 Networking with RS-485 ................................................................................................. 32

4 (40)

List of Tables

Table 1 OpenBAS-LC-NX12R Controller .................................................................................... 7

Table 2 OpenBAS-LC-NX12R Accessories ................................................................................ 7

Table 3 OpenBAS-LC-NX12R Compatible Modules ................................................................... 8

Table 4 Analog Input Wiring ........................................................................................................ 24

Table 5 Analog Input Wiring ........................................................................................................ 26

Table 6 Digital Input Wiring ......................................................................................................... 28

5 (40)

1.0 Introduction

This document provides information on installing the OpenBAS-LC-NX12R lighting controller.

1.1 OpenBAS-LC-NX12R Lighting Controller

The OpenBAS-LC-NX12R Lighting Controller can control up to 12 external lighting relays with
bipolar 24 VAC/VDC coils, and it can connect to mainstream BAS (building automation
system) protocols.

It has an input for an external AUTO / OFF / MANUAL switch for local operation, as well as a
universal input for 0-10 V, 4-20 mA, or resistive temperature sensor inputs.

1.2 Features

The OpenBAS-LC-NX12R Lighting Controller integrates into Mircom’s unified platform for
automating HVAC and mechanical rooms as well as incorporating energy management
features and lighting control to offer building owners and managers a seamless operation with
the following features:

• Modular design to cover any small, medium or large project.

• Industry standard field bus protocols to integrate into any existing BAS system such as

BACnet, Modbus, Optomux, N2-Open, and ASCII.

• Advanced Networking to integrate into IP networks and use the most advanced features

and protocols such as distributed computing, USB and Cloud storage, HTML5,
JavaScript, XML, Ajax, SMS, and GSM.

• Universal inputs to connect any industry standard sensors.

• Modular add-ons for every Building Automation System solution.

• The OpenBAS software which provides owners and managers a single solution for

managing all their building’s automation needs.

6 (40)

2.0 Overview

2.1 OpenBAS-LC-NX12R Components

2.1.1 Controller

Table 1 OpenBAS-LC-NX12R Controller

Picture Model Description

Lighting controller

• programmable logic controller and

scheduler

• 12 outputs to control latching 24 V

lighting relays

OpenBAS-LC-NX12R

• expandable to up to 48 zones

• USB and I²C buses

• 1 RS-485 field bus connection with

support for multiple protocols

• 1 universal input and 2 local

override inputs

• LED display

2.1.2 Accessories

Accessories are powered from the controller.

Table 2 OpenBAS-LC-NX12R Accessories

Model Description

OBS-ACC-32K128 128KB EEPROM plus 32 KB non-volatile RAM memory expansion

OpenBAS-ACC-TE1K 1000 Ω resistive silicon temperature sensor

Wireless 433 MHz RF receiver that integrates up to 10 wireless

OpenBAS-HV-RF433R

transmitters and thermostats into OpenBAS-LC-NX12R controllers

Mounts in a DIN rail-mounted box

7 (40)

2.1.3 Compatible modules

Compatible modules are mounted separately from the controller.

Table 3 OpenBAS-LC-NX12R Compatible Modules

Model Description

Ethernet controller with support for multiple protocols

Overview

OpenBAS-NWK-ETH3

• 2 field bus connections

• Mounts in a DIN rail-mounted box

• Powered separately

8 (40)

3.0 Installation

i

Circuit board

Base with
mounting clip

Enclosure

OpenBAS-LC-FPDISP
LED display

Screws (x 4)

Note: Installation of OpenBAS-LC-NX12R controllers should be in accordance with the

Canadian Electrical Code or the National Electrical Code, and comply with all
local regulations. Final acceptance subject to the Local Authority Having
Jurisdiction (AHJ).

3.1 Parts of the Enclosure

Figure 1 Parts of the enclosure

9 (40)

Installation

!

To remove the circuit board from the enclosure

Caution: Risk of Electric Shock. Disconnect the mains power and disconnect the

controller from all wiring before opening the enclosure.

Attention: Always hold circuit boards by the edges to prevent damage from static

electricity. Always wear an anti-static bracelet when handling circuit
boards.

1. Remove the 4 screws and then remove the display.

2. Insert a flathead screwdriver under the tabs on the enclosure, shown in Figure 2, in order
to lift the tabs and remove the base.

Figure 2 Tabs on enclosure

10 (40)

Installation

Lift tabs and remove
circuit board

Circuit board

!

3. Hold the circuit board with one hand, and with the other hand lift the tabs so that you can
remove the circuit board from the enclosure. See Figure 3.

Figure 3 Lift tabs and remove circuit board

Attention: Be careful not to break the tabs. Do not apply excessive force.

11 (40)

3.2 Controller Board Connections

USB
connection

Power
24 VAC/VDC

COM1

Universal

input

To latching
lighting
relays

To latching

lighting

relays

To latching

lighting

relays

To latching
lighting
relays

Manual
override o

Manual
override on

Networking
ports

Reset button

Jumper J1

Download button

Connection for
display

Connection for
memory expansion
or wireless receiver

Battery
connection

Installation

Figure 4 Controller board connections

12 (40)

Installation

!

i

Connection for
memory expansion
or wireless receiver

Connection for
display

I2C

I2C1

3.3 Installing Accessories

Attention: This job must be performed only by a certified technician as dangerous

voltages might be present inside of the enclosure.
Always disconnect the power before installing the communication
cards.

3.3.1 Memory Expansion Card (OBS-ACC-32K128) and Wireless Receiver
(OpenBAS-HV-RF433R)

Note: When connecting the I2C ports on 2 devices, make sure to connect pin 1 on the

first device to pin 1 on the second device. Pin 1 is marked by a dot or a “1”.

Connect the memory expansion card to I2C.

Connect the display to I2C1.

Connect the OpenBAS-HV-RF433R wireless receiver to I2C, so that it is accessible when the
board is in the enclosure.

Figure 5 Connections for display, memory expansion cards, and wireless

receiver

3.4 Reset and Download Buttons

Press the RESET button to restart the controller.

The DWNLD button is used for loading firmware on to the controller.

Refer to the OpenBAS Programming Manual for information on upgrading controllers.

13 (40)

3.5 USB

!

The USB 2.0 connection is shown in Figure 4. Connect a computer to this port in order to
configure the controller.

3.6 Battery

Attention: Caution – The battery used in this device may present a risk of fire or

The battery is used only during power outages for real time clock and data retention. The
Mircom part number for the battery is BT-025.

Install the battery before mounting the controller.

Installation

chemical burn if mistreated. Do no disassemble, heat above 60°C
(140°F), or incinerate. Replace battery with FDK Corporation ML2430
batteries only. Use of another battery may present a risk of fire or
explosion.

To install or replace the battery

1. Disconnect the mains power and open the mains breaker.

2. Disconnect all wiring from the unit.

3. Remove the top cover as described on page 10.

4. Disconnect the old battery.

5. Dispose of the used battery promptly. Keep away from children. Do not disassemble and
do not dispose of in fire.

6. Connect the new battery to the connector shown in Figure 4. The battery wire can be
connected only one way.

14 (40)

3.7 Enclosure Dimensions

3 35/64” (90 mm)

6 9/32”
(160 mm)

Mounting
clip

Hooks

Installation

Figure 6 Enclosure (back view)

15 (40)

3.8 Assembly

i

Circuit board

!

To put the circuit board in the enclosure

1. Hold the circuit board with one hand, and with the other hand lift the tabs so that you can
fit the circuit board into the enclosure as shown in Figure 7.

Note: Make sure that the board is the right way up: the terminal labels on the enclosure

must match the terminal labels on the circuit board.

Installation

Figure 7 Fit the circuit board in enclosure

2. Snap the base onto the enclosure. Make sure that the mounting clip is on the right as
shown in Figure 8.

3. Connect the display to the connection labeled I2C1. Make sure that the display is
oriented as shown in Figure 8.

4. Secure the display with the 4 screws.

Attention: Always hold circuit boards by the edges to prevent damage from static

electricity. Always wear an anti-static bracelet when handling circuit
boards.

16 (40)

3.9 Mounting the Enclosure

!

Mount with
mounting
clip on right

Attention: Mount the enclosure on a DIN rail in a UL-compliant metal box. Do not

drill holes in the enclosure or modify the enclosure in any way.

Mount the enclosure with the Mircom logo the right way up, the mounting clip on the right, and
the outputs on top, as shown in Figure 8.

The controller can also be mounted horizontally with the mounting clip on the bottom.

To mount the enclosure on a DIN rail

1. Mount a section of DIN rail vertically so that there is enough space for the enclosure to
be mounted.

2. Slide the hooks under the rail and push the enclosure to secure it on the DIN rail. The
mounting clip locks it in place.

3. Install a DIN rail stopper to prevent the unit from falling.

Installation

Figure 8 Enclosure mounted on DIN rail

17 (40)

Installation

Mounting clip

Figure 9 Enclosure mounted on DIN rail (back view)

To remove the enclosure from the DIN rail

• Pull the mounting clip to release the enclosure from the DIN rail, and carefully pull the

enclosure off the DIN rail.

18 (40)

4.0 Field wiring

i

Note: Installation of OpenBAS-LC-NX12R controllers must be in accordance with the

Canadian Electrical Code or the National Electrical Code, and comply with all
local regulations. Final acceptance is subject to the Local Authority Having
Jurisdiction (AHJ).

4.1 To Wire the Terminals

Figure 4 on page 12 shows the location of the terminals. The terminals are depluggable for
ease of wiring.

4.1.1 Required Tools

Tools needed:

• Precision or jeweler's screwdriver set

• Wire cutter

• Wire stripper

4.1.2 Installation Tips

• Perform visual inspection of circuit board and parts for obvious issues.

• Use a wire tie to group wires for easy identification and neatness.

4.2 Power Supply Connection

• 24 Vdc, 400 mA max.

• 24 Vac, 500 mA max.

19 (40)

Field wiring

24 VAC/VDC

0 V

0V

24V

0V

!

Figure 10 Power supply - 24 VAC or 24 VDC

Caution: An appropriate UL listed class 2 power supply or transformer with

necessary protection devices such as fuses or breakers should be used
to limit the risk of fire. All local codes and regulations for installation
must be observed.

• Use either of the terminals labeled 0V to connect the negative side of the power supply.

20 (40)

4.3 Manual Override Terminals

mON

0V
UI1

mOFF

mOFF

3 position
switch

24V

mON

24 VAC/VDC

0V

OFF

ON

0V

Controller

Field wiring

Figure 11 Manual Override Terminals

The mOFF and mON terminals provide a way to manually override the lighting controls. They
are inputs that receive 24 VAC or VDC only.

Connect a 3 position switch to these terminals. The switch can be powered from the same
power source that powers the controller, as shown in Figure 12.

When the switch is set to OFF, the controller turns all relays off.

When the switch is set to ON, the controller turns all relays on.

When the switch is set so that both OFF and ON are open (AUTO state), then the controller
turns the relays to their previous state. While the switch is the this state, the controller’s
programming and schedules can control the relays. Refer to the OpenBAS Programming
Manual for information.

Figure 12 Manual override switch wiring

21 (40)

4.4 Jumper J1

Jumper J1

Short jumper J1 ONLY when the universal input is connected to a resistive 1000 Ω
temperature sensor (for instance, OpenBAS-ACC-TE1K or a positive temperature coefficient
thermistor).

In all other cases, make sure that J1 is open.

Field wiring

Figure 13 Jumper J1

4.5 Universal Input

The controller has 1 universal input. Depending on the application, the universal input can be
used as:

• Analog Input (section 4.5.2 on page 24) 0-10 VDC

0-5 VDC

0.5-4.5 VDC ratiometric
0-20 mA
4-20 mA
Thermocouple input with
x200 amplifiers

• Input for a resistive 1000 Ω temperature sensor (section 4.5.3 on page 26)

• Measuring 24 VDC (section 4.5.4 on page 27)

• Digital (binary) input (section 4.5.5 on page 27) for dry contacts being fed by

12 VDC

• Pulse counter (section 4.5.5 on page 27) active PNP 12 VDC

for dry contacts being fed by
12 VDC

22 (40)

Field wiring

Universal

input

0V
UI1

0V

See section 4.5.2 on page 24 for its use as an analog input, and section 4.5.5 on page 27 for
its use as a digital input.

Figure 14 Universal input

4.5.1 Tips for the universal input

• Use 18 AWG stranded wire.

• The absolute maximum voltage is 15 VDC.

• Fit the end of the wire with terminal connectors to provide a solid connection that can

withstand temperature changes and vibration without becoming loose.

• Connect the common wires of sensors to the 0V terminals.

• Short jumper J1 ONLY when using a resistive 1000 Ω temperature sensor. See section

4.4 on page 22.

• When using 2 or more external power supplies, connect the negatives or commons of

both power supplies to the 0V terminal of the controller.

To ensure that the universal input operates correctly, follow these guidelines:

• Limit the distance between the analog sensor and the controller to 10 m (30 ft). Mircom

recommends shielded wire for noisy environments.

• If this distance is not possible, longer wire runs with shielded wire are allowed up to 30 m

(100 ft). Connect the shield to any 0V terminal on the controller, making sure to isolate
the shield on the other end. Failing to do so creates ground loops.

• When possible, route the wiring inside metal piping and ground the piping for better

results.

• Avoid running any analog signals near of sources of electric noise such as: motors,

ballasts, fluorescent lamps, variable frequency drives, high energy contacts, RF (radio

23 (40)

frequency) transmitters, microwave ovens, and any other equipment that generates

!

Signal

-

Field Device

UI1

24V

0V

Controller

+

electromagnetic interference.

• Keep a minimum distance of 30 cm (1 ft) between analog input wiring and any conductor

carrying more than 24 VAC.

• Follow good wiring and installation practices, and follow all local regulations and

electrical codes

4.5.2 Analog Input

Connect any sensor or transducer that outputs 0-5 V, 0.5-4.5 V ratiometric, or 0-10 V directly
to the universal input when it is configured as an analog input.

To use the universal input as an analog input

1. Connect the appropriate analog signal to the universal input according to the diagrams
below.

2. Configure the analog input type and then calibrate using the OpenBAS software.

Terminal Labeling on Field Devices

Field wiring

Type of field device Power source Wiring diagram

24 V powered
transducer with 0-10
VDC output

The positive terminal on field devices might be labeled one of the following:

+ +24 +PWR 24 +DC AC PWR

The negative terminal on field devices might be labeled one of the following:

-0VGNDNegCOM

Table 4 shows how to connect different devices to the analog inputs.

Attention: When using 2 or more external power supplies, connect the negatives

or commons of both power supplies to the 0V terminal of the controller.

Table 4 Analog Input Wiring

24 V

24 V power supply
common to field device
and controller. Power can
be 24 VDC or VAC as
required by the field
device.

0 V

24 (40)

Table 4 Analog Input Wiring (Continued)

UI1

+

Signal

-

24V

0V

Field Device Controller

Power Supply

+

-

24 VAC or VDC
Power Supply

+

-

UI1

0 V

Field Device

+

-

24V

0V

24 VDC

ȍ

Controller

24V

0V

UI1

ȍ

Controller

Power Supply

+

-

24 VAC or VDC
Power Supply

+

-

+

-

Field Device

UI1

0 V

+

Signal

24V

0V

24 VAC

ȍ

-

Field Device Controller

Type of field device Power source Wiring diagram

External power supply for
field device (depends on
field device requirements)

Transducer with 0-10
VDC output

2-wire transducer with 4­20 mA or 0-20 mA
output

and 24 V external power
supply for controller.

Connect the negatives or
commons of both power
supplies to the 0V terminal
of the controller.

Field wiring

Connect an external 250
Ω ½ Watt 1% load
resistor in parallel
between the universal
input terminal and 0V to
provide a return path for
the transducer signal
current.

2 wire transducer with 4­20 mA or 0-20 mA
output

Connect an external 250
Ω ½ Watt 1% load
resistor in parallel
between the universal
input terminal and 0V to
provide a return path for
the transducer signal
current.

3 wire transducer with 4­20 mA or 0-20 mA
output

24 VDC power supply
common to field device
and controller.

External power supply for
field device (depends on
field device requirements)
and 24 V external power
supply for controller.

Connect the negatives or
commons of both power
supplies to the 0V terminal
of the controller.

Connect an external 250
Ω ½ Watt 1% load
resistor in parallel
between the universal

24 VAC power supply
common to field device
and controller.

input terminal and 0V to
provide a return path for
the transducer signal

current.

25 (40)

Table 4 Analog Input Wiring (Continued)

24V

0V

UI1

ȍ

Controller

Power Supply

+

-

24 VAC or VDC
Power Supply

+

-

+

Signal

-

Field Device

Signal

0V

J or K
thermocouple

+

-

+

-

x200
instrumentation
amplier

UI1

0V

Controller

24V

Power Supply

+

-

24 VAC or VDC
Power Supply

+

-

+

UI1

0V

Field
Device

-

-

Controller

Type of field device Power source Wiring diagram

3 wire transducer with 4­20 mA or 0-20 mA
output

Connect an external 250
Ω ½ Watt 1% load
resistor in parallel
between the universal
input terminal and 0V to
provide a return path for
the transducer signal
current.

J or K Thermocouples

When using J or K
thermocouples, install a
x200 low offset amplifier.

External power supply for
field device (depends on
field device requirements)
and 24 V external power
supply for controller.

Connect the negatives or
commons of both power
supplies to the 0V terminal
of the controller.

External power supply for
field device (depends on
field device requirements)
and 24 V external power
supply for controller.

Connect the negatives or
commons of both power
supplies to the 0V terminal
of the controller.

Field wiring

4.5.3 Resistive 1000 Ω Temperature Sensor

For resistive temperature sensors, the jumper J1 must be shorted. See section 4.4 on
page 22. For all other devices, the jumper must be open.

Table 5 Analog Input Wiring

Type of field device Power source Wiring diagram

Resistive 1000 Ω 21° C
silicon temperature
sensor

N/A

26 (40)

4.5.4 Measuring 24 VDC with the Analog Input

0V

UI1

Nȍ

Field Device

+

-

Controller

1-30 VDC

!

If you want to measure 24 VDC voltages, add a 15 kΩ ½ Watt 1% resistor in series with the
higher voltage to be measured. See Figure 15.

Figure 15 Measuring VDC

Caution: You can measure up to 30 VDC. A higher voltage will damage the

controller.

Only DC voltages can be input to the universal input. Applying AC
voltages or inverting the polarity can damage the controller.

Field wiring

4.5.5 Digital Input

The universal input can receive digital signals. These are signals that represent only two
states.

When used as a digital input, the universal input has the following ranges:

• ZERO (0) is valid for an input voltage between 0 to 4 VDC

• ONE (1) is valid for an input voltage between 8 to12 VDC

27 (40)

Field wiring

Voltage

0V

2V

4V

6V

8V

10V

+12V

Valid

ZERO

region

Valid

ONE

region

Uncertain

region

UI#

Nȍ

24V

Field Device

24VDC

Controller

0V

0V

Any voltage that lies between 4.1 to 7.9 V can give ambiguous results and must be avoided.
See Figure 16.

Input

Figure 16 Digital input voltage range

When used as a digital input, the universal input can measure frequencies up to 10 Hz (600
pulses per minute). The minimum pulse width detectable is 50 milliseconds.

Dry contact, push buttons, magnetic reed switches or PNP transistors must supply voltage to
the digital input for correct operation.

To use the universal input as a digital input

1. Connect the appropriate digital signal to the universal input according to the diagrams
below.

2. Configure the digital input type and then calibrate using the OpenBAS software.

Table 6 shows how to connect a device to the digital input.

Table 6 Digital Input Wiring

Type of field device Notes Wiring diagram

Dry contact or high
switched PNP transistor

24 VDC power supply to feed
the dry contact switches

28 (40)

4.6 Outputs

Red

Blue

Output 1

Output 2

Output 3

Output 4

Output 5

Output 6

Output 7

Output 8

Output 9

Output 10

Output 11

Output 12

Red

Blue

Red

Blue

Red

Blue

Red

Blue

Red

Blue

Blue

Red

Blue

Red

Blue

Red

Blue

Red

Blue

Red

Blue

Red

Unused pin

Unused pin

Latching lighting relay

Blue

Red

Red

Blue

The 12 outputs labeled Blue and Red are shown in Figure 17. Connect these outputs to the
24 VAC or 24 VDC coils of latching 2 wire relays.

Field wiring

Figure 17 Outputs

Figure 18 shows a latching lighting relay connected to output 4.

Figure 18 Connection to a latching lighting relay

29 (40)

Field wiring

OpenBAS-LC-NX12R

OpenBAS-NWK-ETH3

Cat 5 cable

RS-485

Install the latching relays inside the power panel as shown in Figure 19. If you install the
controller vertically, use DIN rail stoppers to prevent the units from falling.

Figure 19 OpenBAS-LC-NX12R with 12 lighting relays

4.7 Adding OpenBAS-LC-NX12R to an Ethernet Network

Connect the RS-485 port of OpenBAS-LC-NX12R to OpenBAS-NWK-ETH3 as shown in
Figure 20. OpenBAS-LC-NX12R and OpenBAS-NWK-ETH3 must be powered separately.

See section 4.8.2 on page 32 for information on the RS-485 port.

Figure 20 Connecting OpenBAS-NWK-ETH3 to OpenBAS-LC-NX12R

30 (40)

4.8 Networking OpenBAS-LC-NX12R Controllers together

X2 X1

Third controller on network
(slave)

Second controller on network
(slave)

First controller on network
(master)

X2 X1

X2 X1

24V 0V

1 m (3 ft) 1 m (3 ft)

Up to 4 OpenBAS-LC-NX12R controllers can be networked together, providing a total of 48
zones.

There are 2 options for networking: X1 and X2 ports, or RS-485.

4.8.1 X1 and X2 Ports

The OpenBAS-LC-NX12R controller comes with a cable for connecting it to another
OpenBAS-LC-NX12R controller using the X1 and X2 ports. Use the X1 and X2 ports when the
maximum distance between the controllers is 1 m (3 feet).

Figure 21 shows 3 OpenBAS-LC-NX12R controllers networked with the X1 and X2 ports. The
first controller is the master and the others are slaves. Only the master controller requires
power.

You can network a maximum of 4 OpenBAS-LC-NX12R controllers (1 master and 3 slaves)
with the X1 and X2 ports.

Field wiring

Figure 21 Networking with the X1 and X2 ports

31 (40)

4.8.2 Field Bus Connection

First controller
on network

Last controller
on network

Second
controller on
network

Connect shield to
chassis ground on
one metal enclosure
only

The RS-485 connection is labeled COM 1 in Figure 4. Figure 22 shows 3 controllers
networked with RS-485. The list of supported protocols is in chapter 5.

• 22 AWG twisted pair

• Maximum length: 1219.2 m (4000 feet)

• Mircom recommends shielded cable

Field wiring

Figure 22 Networking with RS-485

32 (40)

5.0 Specifications

Standards: UL 60730-1

Input: 24 Vdc, 400 mA max., or 24 Vac, 500 mA max.

Power Supply Protection: Resettable Fuse 1.1 A

Battery: FDK Corporation ML2430

Type: lithium

Nominal capacity: 100 mAh

Nominal voltage: 3 V

Mircom part number: BT-025

1 Universal Input: Analog Input:

• 0-10 VDC

• 0-5 VDC

• 0.5-4.5 VDC ratiometric

• 0-20 mA

• 4-20 mA

• 1000 Ω temperature sensor

• Thermocouple input with x200 amplifiers

Digital (binary) input:

• For dry contacts being fed by 12 VDC

Pulse counter:

• Active PNP 12 VDC

• For dry contacts being fed by 12 VDC

12 Outputs: 24 Vdc, 350 mA nominal, 500 mA max., pulsed every 100 ms to relays

2 Manual Override Inputs: 24 VAC/VDC

33 (40)

Communication Ports: 1 RS-485 port supporting the following protocols:

• BACnet/MSTP

• Modbus/RTU-Slave

• Modbus/RTU-Master

• N2-Open

• Optomux

BAUD Rate: 2400, 4800, 9600, 19200, 38400, 76800

1 USB 2.0 port supporting the following protocols:

• Optomux

• ASCII

2

2 I

C ports for memory expansion, LCD display, and OpenBAS-HV-RF433R

2 ports (X1 and X2) only for networking up to 4 OpenBAS-LC-NX12R
controllers (1 master and 3 slaves) supporting the following protocols:

• N2-Open

• Optomux

• N2/O22-master

• ASCII

• ECM

Specifications

Physical Characteristics: Weight: 260 g (9.6 oz)

Enclosure dimensions: 6 9/32” x 3 35/64” x 2 17/64” (160 mm x 90 mm x
58 mm)

Ambient Conditions: Operating Temperature: 0° to 40°C (32° to 104°F), 10% to 90% RH

noncondensing

Indoor Use Only

Purpose of Control: Operating Control

Construction of Control: Independently Mounted, for Surface Mounting

Action Type and additional

Type 1.C

features:

Pollution Degree: 2

Software Class: Class A

Rated Impulse Voltage: 24V circuits: 330V

34 (40)

6.0 Master Warranty and Warning

Information

Terms & Interpretation

In this document the term MGC System refers to all fire alarm, nurse call, and building
automation products manufactured by Mircom Group of Companies, Mircom Technologies
Ltd., MGC Systems Corp or subsidiaries and affiliates and includes specific systems such as
MiCare™, OpenBAS™, and FlexNet™. Moreover, the term MGC System extends to cover all
component parts and software used within such products.

Warning Please Read Carefully

All MGC Systems are subject to terms and conditions of sale as follows:

Note to Installers

This warning contains vital information. As the only individual in contact with system users, it is
your responsibility to bring each item in this warning to the attention of the users of this MGC
System. Failure to properly inform system end-users of the circumstances in which the system
might fail may result in over-reliance upon the system. As a result, it is imperative that you
properly inform each customer for whom you install the system of the possible forms of failure.

System Failures

All MGC Systems have been carefully designed to be as effective as possible. However, there
are circumstances where they may not provide protection. Some reasons for system failure
include:

Inadequate Installation

All MGC Systems must be installed in accordance with all the applicable codes and standards
in order to provide adequate protection. National standards require an inspection and approval
to be conducted by the Local Authority Having Jurisdiction following the initial installation of
the system and following any changes to the system. Such inspections ensure installation has
been carried out properly.

Inadequate Testing

Most problems that would prevent an alarm a MGC System from operating as intended can
be discovered by regular testing and maintenance. The complete system should be tested by
the Local Authority Having Jurisdiction immediately after a fire, storm, earthquake, accident, or
any kind of construction activity inside or outside the premises. The testing should include all
sensing devices, keypads, consoles, alarm indicating devices and any other operational
devices that are part of the system.

IMPORTANT NOTE:

batteries, telephone lines, etc. are tested and examined on a regular basis to minimize system
failure.

End-users of the system must take care to ensure that the system,

35 (40)

Master Warranty and Warning Information

System Users

It is important that all system users be trained in the correct operation of the alarm system and
that they know how to respond when the system indicates an alarm.

A MGC System may not function as intended during an emergency situation where the user is
unable to operate a panic or emergency switch by reason of permanent or temporary physical
disability, inability to reach the device in time, unfamiliarity with the correct operation, or related
circumstances.

Insufficient Time

There may be circumstances when a MGC System will operate as intended, yet the
occupants will not be protected from the emergency due to their inability to respond to the
warnings in a timely manner. If the system is monitored, the response may not occur in time
enough to protect the occupants or their belongings.

Moreover, smoke detectors may not provide timely warning of fires caused by carelessness or
safety hazards such as smoking in bed, violent explosions, escaping gas, improper storage of
flammable materials, overloaded electrical circuits, children playing with matches or arson.

Power Failure

Some MGC System components require adequate electrical power supply to operate.
Examples include: smoke detectors, beacons, HVAC, and lighting controllers. If a device
operates only by AC power, any interruption, however brief, will render that device inoperative
while it does not have power. Power interruptions of any length are often accompanied by
voltage fluctuations which may damage MGC Systems or other electronic equipment. After a
power interruption has occurred, immediately conduct a complete system test to ensure that
the system operates as intended.

Battery Failure

If the MGC System or any device connected to the system operates from batteries it is
possible for the batteries to fail. Even if the batteries have not failed, they must be fully
charged, in good condition, and installed correctly.

MGC Systems with wireless transmitters use replaceable batteries. The system is designed
to provide several years of battery life under normal conditions. The expected battery life is a
function of the device environment, usage and type. Ambient conditions such as high humidity,
high or low temperatures, or large temperature fluctuations may reduce the expected battery
life. While each transmitting device has a low battery monitor which identifies when the
batteries need to be replaced, this monitor may fail to operate as expected. Regular testing
and maintenance will keep the system in good operating condition.

Physical Obstructions

Motion sensors that are part of a MGC System must be kept clear of any obstacles which
impede the sensors’ ability to detect movement. Signals being communicated by a MGC
System may not reach the receiver if an item (such as metal, water, or concrete) is placed on
or near the radio path. Deliberate jamming or other inadvertent radio signal interference can
also negatively affect system operation.

Moreover, MGC Systems may fail to operate as intended if motion, heat, or smoke sensors
are not triggered. Sensors in a fire system may fail to be triggered when the fire is in a
chimney, walls, roof, or on the other side of closed doors; and, smoke and heat detectors may

36 (40)

Master Warranty and Warning Information

not detect smoke or heat from fires on another level of the residence or building. In this
situation the control panel may not alert occupants of a fire.

Sensors in a nurse call system may fail to be triggered when movement is occurring outside of
the motion sensors’ range. For example, if movement is occurring on the other side of closed
doors or on another level of the residence or building the motion detector may not be
triggered. In this situation the central controller may not register an alarm signal.

Other Impairments

Similarly, Alarm Notification Appliances such as sirens, bells, horns, or strobes may not warn
or waken a sleeping occupant if there is an intervening wall or door. It is less likely that the
occupants will be alerted or awakened when notification appliances are located on a different
level of the residence or premise.

Audible notification appliances may be interfered with by other noise sources such as stereos,
radios, televisions, air conditioners, appliances, or passing traffic. Audible notification
appliances, however loud, may not be heard by a hearing- impaired person.

Software

Most MGC Systems contain software. With respect to those products, MGC does not warrant
that the operation of the software will be uninterrupted or error-free or that the software will
meet any other standard of performance, or that the functions or performance of the software
will meet the user’s requirements. MGC shall not be liable for any delays, breakdowns,
interruptions, loss, destruction, alteration or other problems in the use of a product arising out
of, or caused by, the software.

Telephone Lines

Telephone service can cause system failure where telephone lines are relied upon by a MGC
System. Alarms and information coming from an MGC System may not be transmitted if a

phone line is out of service or busy for a certain period of time. Alarms and information may
not be transmitted where telephone lines have been compromised by criminal tampering, local
construction, storms or earthquakes.

Component Failure

Although every effort has been made to make this MGC System as reliable as possible, the
system may fail to function as intended due to the failure of a component.

Security and Insurance

Regardless of its capabilities, no MGC System is a substitute for property or life insurance.
Nor is the system a substitute for property owners, renters, or other occupants to act prudently
to prevent or minimize the harmful effects of an emergency situation.

Moreover, building automation systems produced by MGC are not to be used as a fire, alarm,
or life safety systems.

37 (40)

Master Warranty and Warning Information

Warranty

Limited Warranty

Mircom Technologies Ltd., MGC Systems Corp. and MGC System International Ltd. together
with their subsidiaries and affiliates (collectively, MGC) warrants the original purchaser that for
a period of three years from the date of manufacture, proprietary manufactured product shall
be free of defects in materials and workmanship, under normal use. During the warranty
period, MGC shall, at its option, repair or replace any defective product upon return of the
product to its factory, at no charge for labor and materials. Non-proprietary, third party or

OEM product shall be warranted in accordance with the warranty period of the
manufacturer. Any replacement and/or repaired parts are warranted for the remainder of
the original warranty or ninety (90) days, whichever is longer. The original owner must

promptly notify MGC in writing that there is defect in material or workmanship, such written
notice to be received in all events prior to expiration of the warranty period.

International Warranty

The warranty for international customers is the same as for any customer within Canada and
the United States, MGC shall not be responsible for any customs fees, taxes, or VAT that may
be due.

Conditions to Void Warranty

This warranty applies only to defects in parts and workmanship relating to normal use. It does
not cover:

• damage incurred in shipping or handling;

• damage caused by disaster such as fire, flood, wind, earthquake or lightning;

• damage due to causes beyond the control of MGC such as excessive voltage,

mechanical shock or water damage;

• damage caused by unauthorized attachment, alterations, modifications or foreign

objects;

• damage caused by peripherals (unless such peripherals were supplied by MGC);

• defects caused by failure to provide a suitable installation environment for the products;

• damage caused by use of the products for purposes other than those for which it was

designed;

• damage from improper maintenance;

• damage arising out of any other abuse, mishandling or improper application of the

products.

Warranty Procedure

To obtain service under this warranty, please return the item(s) in question to the point of
purchase. All authorized distributors and dealers have a warranty program. Anyone returning
goods to MGC must first obtain an authorization number. MGC will not accept any shipment
whatsoever for which prior authorization has not been obtained. NOTE: Unless specific pre­authorization in writing is obtained from MGC management, no credits will be issued for
custom fabricated products or parts or for complete fire alarm system. MGC will at its sole
option, repair or replace parts under warranty. Advance replacements for such items must be
purchased.

38 (40)

Master Warranty and Warning Information

Note: MGC’s liability for failure to repair the product under this warranty after a reasonable
number of attempts will be limited to a replacement of the product, as the exclusive remedy for
breach of warranty.

Disclaimer of Warranties

This warranty contains the entire warranty and shall be in lieu of any and all other warranties,
whether expressed or implied (including all implied warranties of merchantability or fitness for
a particular purpose) and of all other obligations or liabilities. MGC neither assumes nor
authorizes any other person purporting to act on its behalf to modify or to change this
warranty, or to assume for it any other warranty or liability concerning this product.

This disclaimer of warranties and limited warranty are governed by the laws of the province of
Ontario, Canada.

Out of Warranty Repairs

MGC will at its option repair or replace out-of-warranty products which are returned to its
factory according to the following conditions. Anyone returning goods to MGC must first obtain
an authorization number. MGC will not accept any shipment whatsoever for which prior
authorization has not been obtained.

Products which MGC determines to be repairable will be repaired and returned. A set fee
which MGC has predetermined and which may be revised from time to time, will be charged
for each unit repaired.

Products which MGC determines not to be repairable will be replaced by the nearest
equivalent product available at that time. The current market price of the replacement product
will be charged for each replacement unit.

The foregoing information is accurate as of the date of publishing and is subject to change or
revision without prior notice at the sole discretion of the Company.

WARNING: MGC recommends that the entire system be completely tested on a regular basis.
However, despite frequent testing, and due to, but not limited to, criminal tampering or
electrical disruption, it is possible for this product to fail to perform as expected.

NOTE: UNDER NO CIRCUMSTANCES SHALL MGC BE LIABLE FOR ANY SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES BASED UPON BREACH OF
WARRANTY, BREACH OF CONTRACT, NEGLIGENCE, STRICT LIABILITY, OR ANY
OTHE LEGAL THEORY. SUCH DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, LOSS
OF PROFITS, LOSS OF THE PRODUCT OR ANY ASSOCIATED EQUIPMENT, COST OF
CAPITAL, COST OF SUBSTITUTE OR REPLACEMENT EQUIPMENT, FACILITIES OR
SERVICES, DOWN TIME, PURCHASER’S TIME, THE CLAIMS OF THIRD PARTIES,
INCLUDING CUSTOMERS, AND INJURY TO PROPERTY.

MGC MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE WITH RESPECT TO ITS GOODS DELIVERED, NOR IS THERE ANY OTHER
WARRANTY, EXPRESSED OR IMPLIED, EXCEPT FOR THE WARRANTY CONTAINED
HEREIN.

39 (40)

40

© Mircom 2017
Printed in Canada
Subject to change without prior notice

www.mircomgroup.com

TECHNICAL SUPPORT
North America
Tel: (888) Mircom5
[phone]
International
Tel: [phone]

U.S.A
4575 Witmer Industrial Estates
Niagara Falls, NY 14305
Tel: [phone]
[phone]
Fax: [phone]

CANADA - Main Office
25 Interchange Way
Vaughan, ON L4K 5W3
Tel: [phone]
[phone]
Fax: [phone]