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gazex W3 Series User Manual

Digital gas detection system
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Warsaw
USER MANUAL
edition 2W3sW36_eng
BEFORE installation, please read the
entire USER MANUAL.
To ensure safety during
installation and operation
of the device it is essential to
to
comply
recommendations
and
warnings
Proceed only if you have fully understood
this manual.
Keep this Manual for reference by the
System User.
1.
2.
3.
4.
5.
6.
6.8 PROBLEM? Useful information
6.9 Installation and activation recommendations
7.
8.
9.
©gazex '2024. All rights reserved. Reproduction or copying, in whole or in part, without the permission of GAZEX is prohibited.
The 'GAZEX' logo and the 'gazex' name, as well as 'dex', 'Aktywny System Bezpieczeństwa Instalacji Gazowej' [Active Gas Installation Safety
MDD-256/T module User Manual edition 2W3sW36_eng
with
the
bearing
this
Purpose
Technical parameters
Description and connection method
Installing MDD in the system
Configuring MDD
Digital Gas Detection System activation
Maintenance/operation
MDD storage
Warranty terms and conditions
PRODUCENT:
ul.Baletowa 16 02-867 Warszawa
tel : 22 644 2511
.
www.gazex.pl
Work and Live SAFER with Us!
MDD-256/T
DIGITAL GAS DETECTION SYSTEM
SUPERVISORY MODULE
symbol.
GAZEX
,
gazex
gazex.pl
@
System], ASBIG, are registered trademarks of GAZEX company.
Series [W3]
with W36 software
p. 3
4
5
6
10
20
23
24
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28
©gazex'2024 v2409
p.1 / 28
©gazex

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Summary of Contents for gazex W3 Series

  • Page 1 ©gazex ’2024. All rights reserved. Reproduction or copying, in whole or in part, without the permission of GAZEX is prohibited. The ‘GAZEX’ logo and the ‘gazex’ name, as well as ‘dex’, ‘Aktywny System Bezpieczeństwa Instalacji Gazowej’ [Active Gas Installation Safety System], ASBIG, are registered trademarks of GAZEX company.
  • Page 2 RH – relative air humidity; SGG3Y+ – Standard Gazex 3-Year Plus Warranty covering the period until the end of the year in which the device was manufactured and the following 3 years (year of manufacture indicated on the nameplate => no warranty cards required) –...

  • Page 3: Intended Use

    MDD-256/T is the primary supervisory controller of the Digital Gas Detection System (DGDS). The DGDS also includes digital detectors manufactured by GAZEX, such as the DD, DG/M, or DG.EN/M models, and/or detectors without an RS-485 port, connected via connection modules such as MDD-1, MDD-1/T, MDD-1x/T, MDP- 1.A/TM, and MDD-N1 (for connecting external systems).

  • Page 4: System Block Diagram

    In dry premises with temperatures between +5C and +35C; Storage internal backup battery life – 5 years from the date of manufacture Standard Gazex 3-Year Plus Warranty (SGG3Y+) covering the period until the end of the year in which the device was manufactured and the following Warranty 3 years (year of manufacture indicated on the nameplate =>...
  • Page 5 R4 - cable 4x 2x 0,5 mm2 schielded Fig. 3. View of terminal strips – electrical C3, E, R - cable mark ings according to the INFO-gazex P bulletin connections the PE wire is connected to the SCREEN only at one point on the bus (closest to MDD-256/T)
  • Page 6 The creation of 'branches' from the bus (e.g. using a CB-3 junction box) is allowed, but such a branch should not exceed 12 metres. In Figure 4.2, device ‘C’ is connected to the bus, forming a ‘branch’. MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.6 / 28...
  • Page 7 One terminal should be used to connect the current device at the end of the existing detector network, the other is used to lead the serial connection to the next device Fig.4.2.2. MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.7 / 28...
  • Page 8 Fig. 4.2.2 Connection of further digital devices to DET.NET bus Table 4.2.2 Suggested use of wires in cable type YTKSY ekw 4x2x0.8 (the colour of the terminal markings used on the labels of all RS-485 ports of GAZEX devices) TERMINAL of DEVICE WIRE from the cable type YTKSY ekw 4x2x0.8...
  • Page 9 2V higher than the minimum permissible supply voltage (under maximum load conditions, with the control outputs switched on). MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.9 / 28...
  • Page 10 (in the format [L.rmm], where ‘r’ is the last digit of the year; ‘mm’ is the month). This information may be required when contacting GAZEX Technical Support. The indicator lights will illuminate sequentially. During this time, the module settings are initialised.
  • Page 11 Assigning the detector to a selected zone determines which MDD outputs will be activated in the event of an alarm or fault status in the detector. If communication with the detector fails, the system returns to point a). MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.11 / 28...
  • Page 12 In the next step, the operation mode for the actuator outputs must be selected by choosing A detailed description of the zone modes for different actuators is provided in Table 5.5.2.1.C. MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.12 / 28...
  • Page 13 Group identifier Addresses of supported detectors 1 to 32 33 to 64 65 to 96 97 to 128 129 to 160 161 to 192 193 to 224 1 to 224 MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.13 / 28...
  • Page 14 Valve output ZAW1 Valve output ZAW2 mode The functionality is constant and independent of the selected output operating mode Zo.31 Zo.22 ALARM A2 ALARM A2 Zo.12 Zo.11 Zone 1 Zone 2 MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.14 / 28...
  • Page 15 , memorises the slave settings, and registers it in the detector network. 3) If there is no detector with the address , after the required time for a valid response, the MDD skips it in the DET.NET detector network. MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.15 / 28...
  • Page 16 NOTE!!! Deleting will reset the addresses of all devices connected to the DET.NET bus. After deletion, all detectors will remain inactive and will require the proper addressing procedure described earlier in section 5.5.1.4 MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.16 / 28...
  • Page 17 Pulsing, Continuous Active None None Inactive cycle dependent on alarm level Pulsing, Pulsing, Continuous Inactive Pulsing Inactive cycle dependent 1s/4s on alarm level MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.17 / 28...
  • Page 18 The new password should be memorised and stored in a secure location. Losing the password will prevent further configuration changes to the module, requiring intervention from the Manufacturer’s Authorised Service Centre. – MDD output test. 5.5.4.2 MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.18 / 28...
  • Page 19 MDD automatically begins displaying ▼ information again from the start. You can interrupt the display by pressing and holding the [ ] key for 2 seconds. MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.19 / 28...
  • Page 20 All devices in the Digital Gas Detection System (DGDS) equipped with RS-485 communication ports, supplied by GAZEX, have communication disabled by default (set to ‘zero’ address). In this status, the devices will not respond to the supervisory module’s inquiries until they are assigned individual addresses. This is a safety setting, ensuring that there are no two (or more) devices with the same address in one network, which would otherwise lead to communication errors.
  • Page 21 - pulsing sound in a cycle (0.5s / 0.5s) – active A1 alarm; - pulsing sound in a cycle (1s / 4s) – alarm or fault status has ended (historical memory); - no sound – normal status. MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.21 / 28...
  • Page 22 The results of the control or activation process should be recorded in the Periodic Inspection Record. Following a positive test result, the Digital Gas Detection System can be considered operational and functional. 6.8. PROBLEMS? MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.22 / 28...
  • Page 23 Power the MDD module correctly. module or reverse polarity. Only the FAULT alarm MDD fault. Contact the maintenance service at GAZEX. light is on. The MDD displays this No communication between Due to the complexity of the problem, the procedure is the MDD and the detector(s) detailed in section 6.9.
  • Page 24 (e.g. automation control, motors, inverters). An optimal solution to avoid many problems during system start-up and operation is to use shielded cables. All cable connections must be made with the power supply switched off. MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.24 / 28...
  • Page 25 (use cables with a larger cross-section). For any other problems, contact the maintenance service at GAZEX. 6.9.2 Checking communication between devices on the RS-485 digital bus. The simplest and quickest way to check communication correctness is to run the addressing procedure from the supervisory module (detailed in section 6 of this Manual).

  • Page 26: Maintenance / Operation

    Customer’s own assessment of the reliability of the facility’s components, the Customer/User may decide to extend the inspection period e.g. to 6 or 12 months. THE SYSTEM INSPECTION INTERVAL MUST NOT EXCEED 12 MONTHS! MDD-256/T module User Manual edition 2W3sW36_eng ©gazex’2024 v2409 p.26 / 28...
  • Page 27 GAZEX reserves the right to make minor changes to the technical specifications of the products supplied, while such changes and not included in this User Manual, and to modify the latter.

  • Page 28: Warranty Terms And Conditions

    SGG3Y+ available at www.gazex.pl. Selected extracts from the SGG3Y+ terms and conditions: … 1. GAZEX guarantees the efficient operation of devices of its own manufacture for the period up to the end of the year in which the device was manufactured and for another three years.

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Mdd-256/t

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