Atest Gaz Sigma MOD AO User manual

POD-004-ENG R01
User Manual
Control Unit Module
Sigma MOD AO
Product code: PW-036-A

We design, manufacture, implement and support:
Systems for Monitoring, Detection and Reduction of gas hazards
We in ite you to familiarize yourself with our offer on www.atestgaz.pl
Atest Gaz A. M. Pachole sp. j.
ul. Spokojna 3, 44-109 Gliwice
Poland
tel.: [phone]
fax: [phone]
e-mail: [email protected]
www.atestgaz.pl

www.atestgaz.pl
Remarks and reser ations
Connection and operation of the device is allowed only after reading and understanding the
contents of this document. Keep User's Manual with the device for future use.
The manufacturer bears no responsibility for errors, damages and failures caused by improper
selection of devices and cables, improper installation or failure to understand the contents of this
document.
Unauthorised repairs and modifications of the device are not allowed. The manufacturer bears no
responsibility for the results of such interventions.
E cessive mechanical, electrical or environmental e posure may result in damage to the device.
Use of damaged or incomplete devices is not allowed.
The design of the Gas Safety System for a protected facility may involve other requirements
throughout all stages of the product life.
How to use this manual?
The following symbols of optical indicators status are used throughout the document:
Symbol Interpretation
Optical indicator on
Optical indicator flashing
Optical indicator off
Optical indicator status not determined (depends on other factors)
Table 1: Optical indicators status notation
Important parts of the te t are marked as follows:
Pay special attention to information given in these fields.
User's Manual consists of main te t and appendices. Appendices are independent documents and
can e ist without User's Manual. Appendices have their own page numbering independent of
User's Manual page numbering. These documents can also have their own tables of contents. All
documents included in the User's Manual are marked in the bottom right corner with their name
(symbol) and revision (issue number).
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Table of contents
1 General information................................................................................................................................5
1.1 Brief description of the device...............................................................................................................5
1.2 Purpose..................................................................................................................................................5
2 Safety......................................................................................................................................................6
3 Description of the construction...............................................................................................................6
3.1 Dimension..............................................................................................................................................6
4 Input-output interfaces...........................................................................................................................7
4.1 Indication of the module status.............................................................................................................7
4.2 Current outputs 4..20 mA.......................................................................................................................7
4.3 Electric interfaces...................................................................................................................................8
5 System architectures...............................................................................................................................9
6 Life cycle................................................................................................................................................10
6.1 Transport..............................................................................................................................................10
6.2 Installation............................................................................................................................................10
6.3 Start-up................................................................................................................................................10
6.4 Configuration of the module /system...................................................................................................10
6.5 Diagnostics...........................................................................................................................................11
6.6 Periodical operations............................................................................................................................11
6.7 Utilization.............................................................................................................................................11
7 Technical specification...........................................................................................................................11
8 Product marking....................................................................................................................................12
9 Appendices............................................................................................................................................12
List of Tables
Table 1: Optical indicators status notation...................................................................................................3
Table 2: Output current in arious modes of the module operation............................................................8
Table 3: Electric interface description..........................................................................................................9
Table 4: Technical specification..................................................................................................................12
Table 5: Method of product's marking.......................................................................................................12
List of Figures
Figure 1: Structure of the Sigma MOD AO module – separation between input and output circuits............5
Figure 2: Dimension of de ice.....................................................................................................................6
Figure 3: Sigma MOD AO front panel...........................................................................................................7
Figure 4: An acti e output...........................................................................................................................7
Figure 5: A passi e output...........................................................................................................................8
Figure 6: Electric connections......................................................................................................................8
Figure 7: Example of Sigma Gas system architecture with Sigma MOD AO module.....................................9
Figure 8: Current output configuration......................................................................................................10
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1 General information
1.1 Brief description of the de ice
The Sigma MOD AO module with analogue outputs 4..20 mA is a non-portable device designed for
continuous operation and installation on the DIN35 rail inside control cabinets, cubicles or other suitable
enclosures that are wall-mounted inside facilities to be protected.
Gas detectors continuously measure momentary concentrations of hazardous gases and digital information
about concentration values is supplied to the module with analogue outputs 4..20 mA that converts input
information into corresponding levels of output currents.
1.2 Purpose
The Sigma MOD AO module is designed for collaboration with gas detectors and au iliary devices to make
up the digital system for gas detection – Sigma Gas. Gas detection systems are frequently integrated with
other devices or systems for automatic control already deployed in e isting industrial and other facilities
and designed to use signal transmission by means of 4..20 mA current loops. If so, a need appears to
provide an interface between the Sigma Gas system, which is based on digital transmission of information,
and an e isting system for automatic control with the 4..20 mA current loop. Only such an interface enables
seamless coupling of the two systems and it is the reason why the Sigma MOD AO module is indispensable
for these applications.
Key tasks of the Sigma MOD AO module include:
readouts of digital information from gas detectors (RS-485 serial transmission with the Sigma BUS
protocol),
control of output current for eight analogue outputs 4..20 mA,
indication of the module status (Operation /Failure).
Parameters for operation in gas detection systems:
handling up to 8 gas detectors,
control of 8 analog outputs 4..20 mA.
Input circuits of the Sigma MOD AO module (RS-485, USB, power supply) are electrically separated from
output circuits 4..20 mA.
Figure 1: Structure of the Sigma MOD AO module – separation between input and output circuits
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POWER SUPPLY SBUS OUTPUT 8 OUTPUT 7
OUTPUT 6OUTPUT 5OUTPUT 4OUTPUT 3OUTPUT 2OUTPUT 1
GND + GND B A - +S -+
S
-
+ S
-
+ S
-+ S
-+ S-
+ S-
+S
Sigma MOD AO
4...20 mA 4...20 mA 4...20 mA 4...20 mA 4...20 mA 4...20 mA
4...20 mA 4...20 mA
-+
S
4...20 mA
RS 485
Powe supply

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2 Safety
All activities related to connecting detectors, signallers and other system components must
be carried out while Control Unit's power supply is off.
Although switching power supply of the Gas Safety System off, there is a possibility that
a dangerous voltage can e ist on the terminals of the Control Unit. It can originate from
another system like for an e ample ventilation system that uses one of the output pins of
Control Unit.
When performing repair, building and maintenance works, secure the device in a proper
way.
3 Description of the construction
3.1 Dimension
Figure 2: Dimension of de ice
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4 Input-output interfaces
4.1 Indication of the module status
Figure 3: Sigma MOD AO front panel
Operation - the status means that:
the device is in sound operation conditions,
operates with default settings.
Failure – the device:
indicates a critical failure.
4.2 Current outputs 4..20 mA
The modules can operate in two modes (see Section 6.4 for more details about configuration):
Acti e – see the connection below:
In that mode the circuit of a current loop is supplied from 4..20 mA outputs of the modules.
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Figure 4: An acti e output
OPERATION
FAILURE

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Passi e - see the connection below:
Figure 5: A passi e output
In that mode the circuit of a current loop is supplied from an e ternal source of power voltage (24...36 V).
Le els of the output current:
Status of operation Output current
The system is stopped (STOP mode) DEF
Detector is missing (no detector is connected) 3mA
Detector inhibited DEF
Detector preheating DEF
Detector calibration DEF
Detector test N
Critical failure of a detector 3mA
Detector is locked (LOCKED mode) 22mA
Detector is overloaded (OVERLOAD mode) 22mA
Non-critical failure of a detector N
Normal operation of the detector N
Table 2: Output current in arious modes of the module operation
N – the output current is in proportion (4.. 20 mA) to the gas concentration reported by an appropriate
detector (4..20 mA),
DEF – default current (3..22 mA) defined specifically for each separate transmission channel – see
Attachment [3].
The output current of ca. 2 mA measured in any out output line indicates a failure of the Sigma MOD AO
module.
4.3 Electric interfaces
Figure 6: Electric connections
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POWER SUPPLY SBUS OUTPUT 8 OUTPUT 7
OUTPUT 6OUTPUT 5OUTPUT 4OUTPUT 3OUTPUT 2OUTPUT 1
GND + GND B A - +S -+
S
-
+ S
-
+ S
-+ S
-+ S-
+ S-
+S
-+
S

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No. Name Terminal Description
1Supply Device supply port. Parameters – see section 7
GND Negative. Both terminals GND are internally connected
+ Positive. Both terminals ”+” are internally connected
2SBUS System communication port. Used for data e change between devices in Sigma Gas
system
A Signal line A
B Signal line B
GND Negative. Both terminals GND are internally connected
3Output 1 - 8 Analog outputs for the 4...20 mA current loop
+ Positive (+) pole for module outputs
S Current outputs for detector signals
- Negative (-) pole for module outputs
Table 3: Electric interface description
5System architectures
Figure 7: Example of Sigma Gas system architecture with Sigma MOD AO module
s. 9|12 User Manual: POD-004-ENG R01
Gas
Detector 1
Sigma
MOD DRV
PLC
R – relay output
DI – digital input
PC
GATEWAY
Sigma
MOD LCD
Sigma
MOD LED1
Sigma
MOD LEDn
Sigma
MOD AO1
Sigma
MOD AOn
4 DI 8 R
4 DI 8 R 4 DI 8 R
Gas
Detector 2
Gas
Detector n
8 4...20mA 8 4...20mA
SBUS
EBUS

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6 Life cycle
6.1 Transport
The device should be transported in the same way as new devices of this type. If the original bo or another
protection (e. g. corks) is not available, it is necessary to secure the device against shocks, vibrations and
moisture on one's own, using other equivalent methods.
The device can be conveyed under environmental conditions as described in Table 4.
6.2 Installation
Device must be mounted on a flat, vertical wall in the orientation shown in Figure 2 or in the control cabinet
on the DIN 35 rail or place in the junction bo in a place accessible to authorized operators, however, if
possible, in such a way as to make it difficult for unauthorized persons to access it. It is recommended to
use such mounting height which allows easy access to the unit.
If multi-wired strands (commonly referred to as "cables") are used for connecting, the ends of these strands
shall be terminated with terminal sleeves.
If there is a need to connect two strands in one terminal of the device, only the connection in one common
terminal sleeve is allowed (details see table 4).
It is unacceptable to combine in one connector two wires which are not pinched in one cable
lug.
6.3 Start-up
After all connections are made and outputs of the Sigma MOD AO module are configured according to the
schematics below no other start-up operations are needed.
6.4 Configuration of the module /system
4..20 mA current outputs of the Sigma MOD AO module can be configured according to needs of the
system.
Every output can be operated in either the active or passive mode, where the mode is selected by
arrangement of jumpers between output terminals according to the illustration below.
Figure 8: Current output configuration
Default configuration – see appendi [3].
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SUPPLY SBUS OUTPUT 8 OUTPUT 7
OUTPUT 6OUTPUT 5OUTPUT 4OUTPUT 3OUTPUT 2OUTPUT 1
GND + GND B A - +S -+
S
-
+ S
-
+ S
-
+S
-+ S-
+ S-
+S
Sigma MOD AO
ACTIVE
-+
S
PASSIVE
ACTIVE
PASSIVE

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6.5 Diagnostics
The device doesn't require diagnostics.
6.6 Periodical operations
6.6.1 Replacement of consumables
Please refer to Table 4 for the recommended lifetime and replacement schedule of fast wearing parts.
6.6.2 Maintenance
The regular maintenance of the detector is limited to wiping its housing with a damp soft cloth. Cleaning
agents that contain solvents, white spirit or alcohol are not allowed.
E cept cleaning the e ternal part of the enclosure, the device does not require any maintenance. The
e ternal part of the enclosure should be cleaned by means of a soft cloth moistened with water and a bit of
a mild detergent.
6.7 Utilization
This symbol on a product or on its packaging indicates that the product
must not be disposed of with other household waste. Instead, it is the
user's responsibility to ensure disposal of waste equipment by handing it
over to a designated collection point for the recycling of waste electrical
and electronic equipment. The proper recycling of your waste equipment
at the time of disposal will help to conserve natural resources and ensure
that it is recycled in a manner that protects human health and the
environment. Information about relevant designated collection points can
be obtained from the Local Authority, waste disposal companies and in the
place of purchase. The equipment can also be returned to the
manufacturer.
7 Technical specification
Power supply
• VCC
• Power consumption
10 – 30 V
10 W
Environment In-operation Storage
• Temperatures
• Humidity
• Pressure
• PH
0 – 50OC
10 – 80% long term
0 – 99% short term
1013 ± 10% hPa
5,5 – 7
0 – 50OC
30 – 90% long term
IP IP 20
Parameters of analogue outputs
• RLOAD_MAX
750 Ω
Parameters of digital inputs
• RIN
• Inactive
• Active
10 kΩ
0 – 1 V
10 – 30 V
Any polarisation
Pick-up time for output changeover > 1s
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Digital communication parameters
• Electric standard
• Communication protocol
RS-485
Sigma BUS
Integrated signalling equipment (optical) LED controls
Dimension See figure 2
Acceptable cables 1 – 2 mm2
(cable lugs 2 1 mm2 or 2 0.75 mm2 should be used for double wires)
Enclosure material Self-e tinguishing ABS / PC
Weight 0.2 kg
Lifetime 10 years
Mandatory periodic inspection Every 12 months
Mounting DIN-35 / TS35 rail
Table 4: Technical specification
8 Product marking
Product code Description
PW-036-A Sigma MOD AO Control Unit Module
Table 5: Method of product's marking
9 Appendices
[1] DEZG033-ENG – EU Declaration of Conformity – Sigma MOD AO
[2] PU-Z-001-ENG – E ample of the Sigma Gas System layout with multiple Sigma MOD AO modules
[3] PU-Z-002-ENG – Sigma MOD AO configuration
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EU Declaration of Conformity
Atest Gaz A. M. Pachole sp. j. declares with full responsibility, that the product:
(Product description)
Control Unit Module
(Trade na e)
Sigma MOD AO
(Type identifier or Product code)
PW-036
co plies with the following Directives and Standards:
in relation to Directive 2014/30/EU – on the har onisation of the laws of the Me ber States
relating to electro agnetic co patibility:
• EN 50270:2015
• EN 61000-6-1:2007
• EN 61000-6-2:2005
• EN 61000-6-3:2007
• EN 61000-6-4:2007
in relation to directive 2011/65/EU – on the restriction of the use of certain hazardous substances
in electrical and electronic equip ent
• EN 50581:2012
This declaration of confor ity is issued under the sole responsibility of the anufacturer.
Purpose and scope of use: product is intended for use in gas detection syste s for residential, co ercial
and industrial environ ent.
This EU Declaration of Confor ity beco es not valid in case of product change or rebuild without
anufacturer's per ission.
Gliwice, 27.04.2020
Atest Gaz A. M. Pachole sp. j.
ul. Spokojna 3, 44-109 Gliwice, Poland
VA No.: PL 9691433231
tel.: [phone]
fax: [phone]
e-mail: [email protected]
p. 1/1 DEZG033-ENG R01
Managing Director
Aleksander Pachole
….........................................................
(Na e and Signature)

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Example of the Sigma Gas System layout with
multiple Sigma MOD AO modules
Atest-Gaz A. M. Pachole sp. j.
ul. Spokojna 3, 44-109 Gliwice, Poland
VA No.: 969-143-32-31
tel.: [phone]
fax: [phone]
e-mail: [email protected]
Appendix: PU-Z-001-ENG R01
s. 1|1

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Sigma MOD AO configuration
Sigma MOD AO
Serial no. Product revision R
Channel number Gas Detector
address DEF
-20 mA output
Active Passive
1
2
3
4
5
6
7
8
Date: Signature: Company stamp:
Sigma MOD AO
Serial no. Product revision R
Channel number Gas Detector
address DEF
-20 mA output
Active Passive
1
2
3
4
5
6
7
8
Date: Signature: Company stamp:
Atest Gaz A. M. Pachole sp. j.
ul. Spokojna 3, 44-109 Gliwice, Poland
VA No.: PL 9691433231
tel.: [phone]
fax: [phone]
e-mail: [email protected]
p. 1/1 Appendix: PU-Z-002-ENG R01
•