Bacharach MGS Operating Manual

Multi-Channel Input

Single and Dual Alarm

Controllers

Installation and Operation Manual

Instruction 6709-9000

Rev 2 – June 2014

Product Leadership • Training • Service • Reliability

MGS Series Controller Manual

WARRANTY POLICY

BACHARACH, INC. WARRANTS THIS INSTRUMENT, EXCLUDING SENSORS, TO BE
FREE FROM DEFECTS IN MATERIALS AND WORKMANSHIP FOR A PERIOD OF ONE
YEAR FROM THE DATE OF PURCHASE BY THE ORIGINAL OWNER. THE SENSORS
HAVE A WARRANTY PERIOD OF ONE YEAR FROM THE DATE OF PURCHASE. IF
THE PRODUCT SHOULD BECOME DEFECTIVE WITHIN THIS WARRANTY PERIOD,
WE WILL REPAIR OR REPLACE IT AT OUR DISCRETION.

THE WARRANTY STATUS MAY BE AFFECTED IF THE INSTRUMENT HAS NOT BEEN
USED AND MAINTAINED PER THE INSTRUCTIONS IN THIS MANUAL OR HAS BEEN
ABUSED, DAMAGED, OR MODIFIED IN ANY WAY. THIS INSTRUMENT IS ONLY TO BE
USED FOR PURPOSES STATED HEREIN. THE MANUFACTURER IS NOT LIABLE FOR
AUXILIARY INTERFACED EQUIPMENT OR CONSEQUENTIAL DAMAGE.

DUE TO ONGOING RESEARCH, DEVELOPMENT, AND PRODUCT TESTING, THE
MANUFACTURER RESERVES THE RIGHT TO CHANGE SPECIFICATIONS WITHOUT
NOTICE. THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED
ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING
THE ACCURACY OF THIS DATA.

ALL GOODS MUST BE SHIPPED TO THE MANUFACTURER BY PREPAID FREIGHT.
ALL RETURNED GOODS MUST BE PRE-AUTHORIZED BY OBTAINING A RETURN
MERCHANDISE AUTHORIZATION (RMA) NUMBER. CONTACT THE MANUFACTURER
FOR A NUMBER AND PROCEDURES REQUIRED FOR PRODUCT TRANSPORT.

SERVICE POLICY

BACHARACH, INC. MAINTAINS AN INSTRUMENT SERVICE FACILITY AT THE
FACTORY. SOME BACHARACH DISTRIBUTORS / AGENTS MAY ALSO HAVE REPAIR
FACILITIES, HOWEVER, BACHARACH ASSUMES NO LIABILITY FOR SERVICE
PERFORMED BY ANYONE OTHER THAN BACHARACH PERSONNEL. REPAIRS ARE
WARRANTED FOR 90 DAYS AFTER DATE OF SHIPMENT (SENSORS, PUMPS,
FILTERS AND BATTERIES HAVE INDIVIDUAL WARRANTIES). SHOULD YOUR
INSTRUMENT REQUIRE NON-WARRANTY REPAIR, YOU MAY CONTACT THE
DISTRIBUTOR FROM WHOM IT WAS PURCHASED OR YOU MAY CONTACT
BACHARACH DIRECTLY.

IF BACHARACH IS TO DO THE REPAIR WORK, SEND THE INSTRUMENT, PREPAID,
TO BACHARACH, INC. AT THE FOLLOWING ADDRESS.

BACHARACH, INC.
621 HUNT VALLEY CIRCLE
NEW KENSINGTON, PA 15068
ATTENTION: SERVICE DEPARTMENT

ALWAYS INCLUDE YOUR RMA #, ADDRESS, TELEPHONE NUMBER, CONTACT
NAME, SHIPPING/BILLING INFORMATION AND A DESCRIPTION OF THE DEFECT AS
YOU PERCEIVE IT. YOU WILL BE CONTACTED WITH A COST ESTIMATE FOR
EXPECTED REPAIRS PRIOR TO THE PERFORMANCE OF ANY SERVICE WORK. FOR
LIABILITY REASONS, BACHARACH HAS A POLICY OF PERFORMING ALL NEEDED
REPAIRS TO RESTORE THE INSTRUMENT TO FULL OPERATING CONDITION.

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PRIOR TO SHIPPING EQUIPMENT TO BACHARACH, CONTACT OUR OFFICE FOR AN
RMA # (RETURNED MERCHANDISE AUTHORIZATION). ALL RETURNED GOODS
MUST BE ACCOMPANIED WITH AN RMA NUMBER.

PACK THE EQUIPMENT WELL (IN ITS ORIGINAL PACKING IF POSSIBLE), AS
BACHARACH CANNOT BE HELD RESPONSIBLE FOR ANY DAMAGE INCURRED
DURING SHIPPING TO OUR FACILITY.

NOTICES

MGS Series Controller Manual

COPYRIGHTS: THIS MANUAL IS SUBJECT TO COPYRIGHT PROTECTION; ALL
RIGHTS ARE RESERVED UNDER INTERNATIONAL AND DOMESTIC COPYRIGHT
LAWS. THIS MANUAL MAY NOT BE COPIED OR TRANSLATED, IN WHOLE OR IN
PART, IN ANY MANNER OR FORMAT, WITHOUT THE WRITTEN PERMISSION OF
BACHARACH, INC.

ALL SOFTWARE WHICH BACHARACH UTILIZES AND/OR DISTRIBUTES, HOLDS A
PROPRIETARY INTEREST AND IS ALSO SUBJECT TO COPYRIGHT PROTECTION
AND ALL RIGHTS ARE RESERVED. NO PARTY MAY USE OR COPY SUCH
SOFTWARE IN ANY MANNER OR FORMAT, EXCEPT TO THE EXTENT THAT
BACHARACH GRANTS THEM A LICENSE TO DO SO. IF THIS SOFTWARE IS BEING
LOADED ONTO MORE THAN ONE COMPUTER, EXTRA SOFTWARE LICENSES MUST
BE PURCHASED.

TECHNICIAN USE ONLY

THIS UNIT MUST BE INSTALLED BY A SUITABLY QUALIFIED TECHNICIAN W HO WILL
INSTALL THIS UNIT IN ACCORDANCE WITH THESE INSTRUCTIONS AND THE
STANDARDS IN THEIR PARTICULAR INDUSTRY/COUNTRY. OPERATORS OF THE
UNIT SHOULD BE AWARE OF THE REGULATIONS AND STANDARDS IN THEIR
INDUSTRY/COUNTRY FOR THE OPERATION OF THIS UNIT. THESE NOTES ARE
ONLY INTENDED AS A GUIDE AND THE MANUFACTURER BEARS NO
RESPONSIBILITY FOR THE INSTALLATION OR OPERATION OF THIS UNIT.

FAILURE TO INSTALL AND OPERATE THE UNIT IN ACCORDANCE WITH THESE
INSTRUCTIONS AND WITH INDUSTRY GUIDELINES MAY CAUSE SERIOUS INJURY
INCLUDING DEATH AND THE MANUFACTURER WILL NOT BE HELD RESPONSIBLE
IN THIS REGARD.

HAZARDOUS AREA WARNING

THIS INSTRUMENT HAS NOT BEEN DESIGNED TO BE INTRINSICALLY SAFE FOR
USE IN AREAS CLASSIFIED AS HAZARDOUS LOCATIONS. FOR YOUR SAFETY, DO
NOT USE IT IN HAZARDOUS (CLASSIFIED) LOCATIONS.

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MGS Series Controller Manual

Table of Contents

SECTION 1.

INTRODUCTION ........................................................................ 5

1.1. OVERVIEW .................................................................................................. 5

1.2. 2-CHANNEL AND 6-CHANNEL MODELS ............................................................. 5

1.3. ALARMING .................................................................................................. 5

1.4. COMPONENTS .............................................................................................. 8

1.5. SPECIFICATIONS ............................................................................................ 9

SECTION 2. MOUNTING INSTRUCTIONS .................................................... 10

2.1. INSTALLATION WARNINGS ............................................................................ 10

2.2. LOCATION RECOMMENDATIONS .................................................................... 10

2.3. MOUNTING DIMENSIONS ............................................................................. 11

SECTION 3. WIRING ................................................................................... 14

3.1. 1- AND 2-CHANNEL UNITS (SINGLE- AND DUAL-ALARM) ................................... 14

3.2. 4- AND 6-CHANNEL UNITS (SINGLE- AND DUAL-ALARM) ................................... 15

3.3. EXTERNAL HORN (FOR AUDIBLE ALARMS) ....................................................... 18

SECTION 4. CONFIGURATION AND OPERATION ........................................ 19

4.1. OVERVIEW ................................................................................................ 19

4.2. INTRODUCTION TO CHANGING ALARM LEVEL(S) ............................................... 19

4.3. CHANGING ALARM LEVEL FOR 2-CHANNEL, 1-ALARM UNITS .............................. 20

4.4. CHANGING ALARM LEVEL FOR 2-CHANNEL, 2-ALARM UNITS .............................. 21

4.5. CHANGING ALARM LEVEL FOR 6-CHANNEL, 1-ALARM UNITS .............................. 22

4.6. CHANGING ALARM LEVEL FOR 6-CHANNEL, 2-ALARM UNITS .............................. 23

4.7. OUTPUT DELAYS ......................................................................................... 24

4.8. FAIL SAFE OPERATION ................................................................................. 24

4.9. MUTING THE AUDIBLE ALARM (KEY SWITCH) ................................................... 24

4.10. RESETTING HIGH ALARMS (DUAL-LEVEL UNITS ONLY) ..................................... 25

DECLARATION OF CONFORMITY .................................................................. 27

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Section 1. Introduction

1.1. Overview

The MGS Series controllers provide local alarm status indications (via
multi-colored, per-channel LEDs) as well as single-level or dual-level
digital (relay) alarm outputs based on 1, 2, 4, or 6 input signals and 1 or
2 user-definable set-points.

1.2. 2-Channel and 6-Channel Models

MGS Controllers support multiple input sensors/transmitters (1, 2, 4, or 6
channels) based on the model of the controller. Inputs are standard 4-20
mA signals from MGS-series sensors or any standard, linear, 4-20 mA
transmitter.

NOTE: The smaller MGS Controller supports up to two input
channels (see Figure 1). The larger controller supports up to
six channels (see Figure 2). The number of alarm LEDs on
your controller will vary based on the flavor of device that is
ordered.

MGS Series Controller Manual

IMPORTANT: If you are NOT using the maximum number of
available channels (2 for the smaller controller, and 6 for the
larger controller), you must connect a 3300 Ω resistor across
pins 1 and 2 for each unused input channel.

1.3. Alarming

Regardless of the number of channels supported, each controller
contains either 1 or 2 adjustable potentiometers (pots) for setting the
alarm value(s). Single-level alarm controllers contain one pot which sets
the controller’s alarm threshold. Dual-level alarm controllers contain two
pots which are used to set the low-level and high-level alarm thresholds.

As an individual channel’s input signal exceed the controller’s alarm
threshold (set by the programmable pot(s)), the corresponding channel’s
alarm LED is illuminated, allowing a technician to visually inspect the
controller for any alarm conditions on a channel-by-channel basis.

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MGS Series Controller Manual

Figure 1. Sample Configurations (1,2-Channel)

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MGS Series Controller Manual

Figure 2. Sample Configurations (4,6-Channel)

MGS Controllers have either one or two relay outputs: one for single­level alarm controllers (“Alarm”), and 2 for dual-level alarm controllers
(“Alarm High” and “Alarm Low”). Unlike the alarm LEDs that provide a
channel-by-channel alarm status of each incoming transmitter’s signal,
the relay output “trips” or “energizes” if any of the inputs exceed the
alarm threshold set by the pot (that is, if any of the alarm LEDs is
energized). Alarm relays can be used to activate warning lights, sirens,
ventilation fans, etc.

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MGS Series Controller Manual

For dual-alarm configurations, the Alarm Low relay output “trips” or
“energizes” if any of the inputs exceed the alarm threshold set by the low
alarm pot. Similarly, the Alarm High relay output “trips” or “energizes” if
any of the inputs exceed the alarm threshold set by the high alarm pot.

All controllers have a green power LED that is on when the unit has
power. The 4- and 6-channel 2-level units have a fault relay which “trips”
or “energizes” if the controller experiences a fault condition. Like the
alarm relays, the fault relay can be use to activate warning lights, sirens,
ventilation fans, etc.

1.4. Components

The following is a summary of the MGS Controller’s hardware
components. Note that features vary based on model and features (e.g.,
1-2 channel units vs. 4-6 channel units, single-level alarms vs. dual-level
alarms, etc.).

Components Descriptions

Power input Provides power to the MGS Controller

Power LED Power status indicator

Channels (max) 1-2 Channel Units 4-6 Channel Units

Sensor input(s) max 2 max 6 max

Alarm levels Single Dual Single Dual

Set point POT(s) 1 2 1 2

Alarm relay output(s) 1 2 1 2

Alarm LED(s) (max) 2 4 6 12

Fault relay output N/A N/A N/A 1

NOTE: For single-alarm configurations, the Low Alarm LEDs
are not present.

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1.5. Specifications

Specification 1-2 Channel 4-6 Channel

MGS Series Controller Manual

Product Type 1-2 channel alarm

controller

Max Channels 2 6

Inputs 4-20 mA 4-20 mA

Display LED alarm indicators LED alarm indicators

Ambient

-20 to +50 degrees C -20 to +50 degrees C
Temperature
Range

Power Supply 100V-230V AC (50-60Hz)

or 12V DC (Specify at time
of order)

Max Power 15 W Max 25 W Max

Audible Alarm Integrated 12 VDC

Alarm Set
points

User selectable. Common
to all channels. Alarm
level set point is based on
4-20 mA input signal.

Alarm Relays One 10-A 30 VDC or 250

VAC resistive Form C
relay. Two for dual-alarm
configurations. Common
low alarm and high alarm
across channels.

Housing NEMA 1 wall mount NEMA 1 wall mount

Approvals UL/CSA/IEC/EN 61010-1

CE

4-6 channel alarm
controller

100V-230V AC (50-60Hz)
or 12V DC (Specify at time
of order)

User selectable. Common
to all channels. Alarm
level set point is based on
4-20 mA input signal.

One 10-A 30 VDC or 250
VAC resistive Form C
relay. Two for dual-alarm
configurations. Common
low alarm and high alarm
across channels.

Common fault relay on
dual-level alarm
configurations.

UL/CSA/IEC/EN 61010-1
CE

NOTE: If replacement of either main power fuse is required,
use only a 2A 250V slow fuse (0.79 in/20mm) T2AL250V.

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