MSR INTEC PolyGard 2 MGC6 User manual

User Manual
PolyGard®2 MGC6 3-Channel Controller
August 16, 2023 – Revision
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | [phone] & (888) GO.INTEC | inteccontrols.com
March 27, 2023

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Table of Contents
1 General................................................................................................................................... 5
1.1 Applicability ............................................................................................................................................5
1.2 Intended Use...........................................................................................................................................5
1.2.1 3-Channel Controller MGC6..................................................................................................5
1.3 Safety........................................................................................................................................................5
1.4 Responsibilities of Installers and Operators...................................................................................6
1.5 Services ....................................................................................................................................................6
1.6 Limited Warranty ...................................................................................................................................6
1.7 Part Disposal ...........................................................................................................................................6
2 Functional Description ........................................................................................................... 7
2.1 General .....................................................................................................................................................7
2.1.1 3-Channel Controller MGC6..................................................................................................7
Stand-Alone Mode.....................................................................................................................7
2.2 Function Output .....................................................................................................................................8
2.3 Relay Mode ..............................................................................................................................................8
2.4 Relay Function Static/Flash .................................................................................................................8
2.5 Horn Function (not safe output circuit because resettable) ....................................................... 9
3 Installation ........................................................................................................................... 10
3.1 Mounting Instructions........................................................................................................................ 10
3.2 Installation Work................................................................................................................................. 10
4 Electrical Connection ........................................................................................................... 12
4.1 General Notes ...................................................................................................................................... 12
4.2 Terminal Connection.......................................................................................................................... 13
4.3 Connection Diagrams......................................................................................................................... 14
5Commissioning..................................................................................................................... 15
5.1 General Notes ...................................................................................................................................... 15
5.2 Visual Check ......................................................................................................................................... 15
5.3 Selection Gas Type with Unit ........................................................................................................... 15
5.4 Registration/Assignment of AT6 ..................................................................................................... 16
Example MGC6......................................................................................................................... 16
5.5 Checking / Changing Operating Parameters................................................................................ 17
5.6 Stand-Alone-Operation ..................................................................................................................... 17
5.7Running-in Characteristics ............................................................................................................... 18
5.8Functional Test .................................................................................................................................... 18
5.9 Calibration AT6.................................................................................................................................... 18
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MGC6 – UserManual

6Operating Modes .................................................................................................................. 19
6.1 Restart (Diagnostic and Warm-up Stage) ...................................................................................... 19
6.2 Measuring Mode.................................................................................................................................. 20
6.3 Special Mode........................................................................................................................................ 21
6.3.1 Maintenance and Calibration Mode................................................................................. 21
6.3.2 Faults....................................................................................................................................... 21
7Maintenance and Service...................................................................................................... 23
7.1 Inspection ............................................................................................................................................. 23
7.2 Functional Test .................................................................................................................................... 23
7.3 Maintenance and Calibration........................................................................................................... 24
7.4 Repairs................................................................................................................................................... 24
7.5 Exchange of Sensor Head.................................................................................................................. 25
Sensor Head AT6..................................................................................................................... 25
8Project protection ................................................................................................................ 26
Configuration and Parameter Cards ..................................................................................... 26
9.1 Configuration Card System Parameters ......................................................................................... 26
9.2 Configuration Card Alarm Relays / Signal Outputs ...................................................................... 26
9.3 Configuration Card AT6 (Analog Measuring Points).................................................................... 27
10 Technical Data ...................................................................................................................... 28
9
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MGC6 – UserManual

1 General
It is important to read this user manual thoroughly and clearly in order to understand the
information and instructions. The PolyGard®2 devices must be used within product specification
capabilities. Due to on-going product development, MSR-Electronic GmbH | INTEC Controls
reserves the right to change specifications without notice. The information contained herein is
based upon data considered to be accurate. However, no guarantee is expressed or implied
regarding the accuracy of these data.
1.1 Applicability
PolyGard2-Serie:
•3-Channel Controller MGC6
1.2 Intended Use
The PolyGard®2 devices must not be used in potentially explosive atmospheres.
The device must only be employed in areas within the environmental conditions as specified in the
Technical Data (indoor application). The intended sites are all areas being directly connected to the
public low voltage supply, e.g. residential, commercial and industrial environments as well as small
enterprises.
1.2.1 3-Channel Controller MGC6
The 3-Channel Controller MGC6 is designed for the connection of max. 3 analog sensors with
4-20 mA signal. The controller monitors the measured values and activates the alarm relays if the
set alarm thresholds for pre-alarm and main alert are exceeded. In addition, the values are
also provided as 4-20 mA output.
1.3 Safety
The operating instructions must be carefully read and followed by all persons who install, use,
maintain and check the product.
The product can only fulfil its intended functions if it is installed, used, maintained, serviced and
checked in accordance with the instructions provided by MSR-Electronic GmbH | INTEC Controls.
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1.4 Responsibilities of Installers and Operators
It is the installer’s responsibility to ensure that all PolyGard®2 devices are installed in compliance
with all national and local codes and OSHA requirements. The device must be checked for correct
installation and functionality by a qualified person before measurement operation is started.
The PolyGard®2 devices are tested for function by the manufacturer before delivery. The
installation should only be carried out by trained installation technicians, taking into account the
current safety procedures for control installations.
The equipotential bonding required (also e.g. secondary potential to earth) or grounding measures
must be carried out in accordance with the respective project requirements. It is important to ensure
that no ground loops are formed to avoid unwanted interference in the electronic measuring
equipment.
It is also essential to follow strictly all instructions as provided in the user manual.
1.5 Services
It is recommended to check the PolyGard®2 devices regularly. Due to regular maintenance
any performance deviations may easily be corrected. Recalibration and part replacement in the field
may be implemented by a qualified technician and with the appropriate tools.
Alternatively, the easily removable plug-in sensor with the sensor element may be returned for
service to INTEC Controls.
Regular maintenance must be carried out in accordance with the instructions provided herein.
If the MGC6 needs to be returned, an authorized RMA number issued by INTEC Controls is required.
1.6 Limited Warranty
MSR-Electronic GmbH | INTEC Controls does not assume any liability in case of improper or
incorrect use of the device. The installer and operator are exclusively responsible for the design
and use of the product. If the product is not used, maintained or repaired in accordance with
the instructions for use, warranty and product liability claims as well as claims arising from any
guarantees assumed by MSR-Electronic GmbH | INTEC Controls for the product will be forfeited.
MSR-Electronic GmbH | INTEC Controls warrants the PolyGard®2 devices for a period of 2 years (1
year for sensors) from the date of shipment against defects in material or workmanship. Should
any evidence of defects in material or workmanship occur during the warranty period, MSR-
Electronic GmbH | INTEC Controls will repair or replace the product at their own discretion. This
warranty does not apply to units that have been altered, had attempted repair, or been subject to
abuse, accidental or other-wise. The warranty also does not apply to units in which the sensor
element has been overexposed or gas poisoned. The above warranty is in lieu of all other express
warranties, obligations or liabilities.
This warranty applies only to the PolyGard®2 devices. MSR-Electronic GmbH | INTEC Controls shall
not be liable for any incidental or consequential damages arising out of or related to the use of
the PolyGard®2 devices.
1.7 Part Disposal
In accordance with Directive 2012/19/EU, the device must not be disposed of as
municipal waste. Return the device for disposal to your national sales organization,
which you can contact if you have any questions about disposal.
Outside the EU, you have to consider the corresponding directives.
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MGC6 – UserManual

2 Functional Description
2.1 General
The function of the sensor series AT6 is not subject of this manual but can be read in the User
Manual of AT6.
Connection Options for Sensors
AT6 Sensors
with 4–20 mA Signal
MGC6
Standard Max. 3 1–3
Table 1: Overview of the Connection Options for Sensors
2.1.1 3-Channel Controller MGC6
The 3-Channel Controller MGC6 is designed for the connection of max. 3 sensors in total, AT6
series or other 4–20 mA signal devices. The connected sensors are monitored in the MGC6 for
plausibility within the defined measurement, temperature and voltage range, etc.
Stand-Alone Mode
The unit monitors the measured values, compares them to the 2 alarm thresholds and if exceeded
activates the 2 alarm relays as well as a visual and an acknowledgeable, acoustic alarm. A
fault occurred activates the fault relay and is signaled visually and acoustically.
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2.2 Function Output
Action Reaction
(GS = Gas Signal)
(AT =Alarm Threshold)
(CFM = Collective Fault Message)
Alarm LED
Display /
WAO
Alarm 1
Relay 1
Alarm 2
Relay 2
Alarm 3
Relay 5
Warning
Light/Flash
Alarm 4
Relay 4
Horn
Relay 3
(CFM)
GS < AT 1
GREEN
Inactive
Inactive
OFF
OFF
Inactive
GS AT 1
RED slowly
flashing
Active
Inactive
OFF
OFF
Inactive
GS AT 2
RED fast
flashing
Active
Active
OFF
OFF
Inactive
GS AT 3
RED fast
flashing
Active
Active
ON
OFF
Inactive
GS AT 4
RED fast
flashing
Active
Active
ON
ON
Inactive
GS AT 4
+ horn acknowledged
(+ recurrence function)
RED fast
flashing
Active
Active
OFF after
delay ON
OFF
Inactive
Maintenance due (no alarm or
fault)
GREEN
flashing
Inactive
Inactive
OFF
OFF
Inactive
Internal error / fault
YELLOW
Inactive
Inactive
OFF
OFF
Active
Table 2: Function Digital-Output with Relays
Note 1: Relay 1 and 2: Operation mode Energized
Status Inactive: Alarm OFF = Relay coil is powered
Status Active: Alarm ON or device tension-free = Relay coil is current-free
Relay 3: Operation mode Energized
Status Inactive: No fault = Relay coil is powered
Status Active: Fault or device tension-free = Relay coil is current-free
Relay 4 und 5: Open-Collector / transistor output, operation mode De-energized
Status OFF: Alarm OFF or device tension-free
Status ON: Alarm ON
Note 2: Alarm thresholds can have the same value, therefore the relays and/or the horn and
flashlight can be triggered together.
2.3 Relay Mode
Definition of the relay operation mode: The terms energized/de-energized come from the terms
energized/de-energized to trip principle (open-circuit/closed-circuit principle) used for safety
circuits. The terms refer to the activation of the relay coil, not to the relay contacts (as they are
executed as a changeover contact and available in both principles).
The LEDs attached to the modules show the 2 states in analogy (LED off -> relay current-free).
2.4 Relay Function Static/Flash
Definition of the relay function: The function "flashing" represents a connection option for warning
devices to improve visibility. If” flashing” is set, this must not be used as a safe output circuit any
more. A combination of relay mode energized with flashing operation makes no sense and is
therefore suppressed.
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2.5 Horn Function (not safe output circuit because resettable)
The horn function is considered to be active if at least one of the 2 parameters (time or assignment
to digital input) is set. The horn function retains its functionality even for alarms in latching mode.
Special function: Recurrence of the horn relay
After an alarm has been triggered, the horn will remain active until it is acknowledged. After
acknowledgment of the horn relay/s (clicking a button or via external input) a timer starts. When this
time has run out and the alarm is still acting, the relay is set again. This process is repeated endlessly
as long as the associated alarm remains active.
Alarm 2
Relay 2
Gas concentration higher lower than threshold
Acknowledging-
signal
On
Off
On
Off
On
Off
Time Time
Figure 1: Horn Function
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MGC6 – UserManual

3 Installation
Check for completeness and accuracy using the delivery documents and the identification
label on the device.
Electronics can be destroyed by electrostatic discharge (ESD). Therefore, the installation
work should be done only by persons conne
cted to ground, e. g. by standing on a
conductive floor or by taking appropriate grounding measures (acc. to DIN EN 100015).
3.1 Mounting Instructions
When choosing the mounting location, you have to consider the ambient conditions in order to get
representative measurement results. Please pay special attention to the following factors:
•External heat sources are not allowed on the installation site.
•Choose mounting location according to the local regulations.
•Consider ventilation conditions! Do not mount next to air passages or suction holes.
•The sample gas must pass the sensor even under adverse flow conditions. A flow test can be
performed for instance with smoke tubes.
•If the flow conditions are > 6 m/s, it is advisable to use a wind shield.
•Mount the device at a location with minimum vibration and minimum variation in
temperature
•Avoid locations where water, oil etc. may influence proper operation and where mechanical
damage might be possible.
•Provide adequate space around the sensor for maintenance and calibration work.
•Observe possible constructor’s instructions
•The installation height depends on the relative gas density of the monitored gas type and
can be read in the User Manual of the AT6 Sensors.
3.2 Installation Work
Assembly work must only be carried out under gas-free conditions.
The housing must neither be spot-drilled nor drilled through outside the knockouts.
The installation position of the gas detector is always with the sensor head downwards,
cables are introduced from above.
The housing is delivered in closed condition. Before breaking out the knockouts, the exact position
and size of the sensors and cable entries must be determined.
The enclosures type A, C and E offer different mounting options depending on the number and types
of sensors due to a variety of pre-stampings.
The sensor is supplied in separate packaging and should only be mounted on the enclosure during
commissioning to protect it from dirt and damage. For sensors that can be poisoned by silicones,
such as all semiconductor and heat tone sensors, it is imperative to use a protective cap (C2-Z1) and
to remove it only after the silicones have dried and the unit is energized.
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MGC6 – UserManual