Sensitron PL4 +D Manual For Installation And Use
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Sensitron PL4 +D Manual For Installation And Use

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P L 4 + D
ATEX and SIL 1 certified
MANUAL FOR INSTALLATION
AND USE
SENSITRON S.r.l. Viale della Repubblica, 48
20010 CORNAREDO MI - Italy
Tel: + 39 02 93548155 Fax: + 39 02 93548089
E-MAIL: sales@sensitron.it
MT4412E Rev.2.1
17/12/2019
Pagina 1 di 30

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  • Page 1 P L 4 + D ATEX and SIL 1 certified MANUAL FOR INSTALLATION AND USE SENSITRON S.r.l. Viale della Repubblica, 48 20010 CORNAREDO MI - Italy Tel: + 39 02 93548155 Fax: + 39 02 93548089 E-MAIL: sales@sensitron.it MT4412E Rev.2.1...
  • Page 2 PERSONS WHO RELY ON THIS PRODUCT FOR THEIR SAFETY COULD SUFFER SEVERE PERSONAL INJURY OR DEATH. Sensitron S.r.l provides a guarantee for the product supplied. This guarantee lapses if installation, use or maintenance are not carried out in accordance with the instructions of this manual.
  • Page 3 Technical manual PL4 +D THIS TECHNICAL MANUAL DESCRIBES THE PRODUCT IN ITS COMPONENTS, THE INSTALLATION AND THE OPERATION OF THE SYSTEM. THE CONFIGURATION SOFTWARE IS NOT INCLUDED, SO PLEASE REFER TO THE PROPER MANUAL. MT4412E Rev.2.1 17/12/2019 Pagina 3 di 30...

  • Page 4: Table Of Contents

    Technical manual PL4 +D INDEX INTRODUCTION ........................... 5 1.1) PL4 +D ..............7 LOCK DIAGRAM SYSTEM WITH GAS CONTROL UNIT 1.2) ......................7 ECHNICAL SPECIFICATIONS INSTALLATION ............................ 8 2.1) ......................8 SSEMBLY AND CONNECTIONS 2.1.1) ................... 9 NIT DIAGRAM AND PART IDENTIFICATION 2.1.2)

  • Page 5: Introduction

    INTRODUCTION The highly innovative and versatile PL4 +D gas unit is the ideal solution for small systems with up to 16 gas detectors. The system provides for the direct connection of 4 detectors to the gas unit (4-20mA) and to additional 8 detectors that can be connected directly to the RS485 bus or via a remote module with 8 x STG/IN8-S inputs (optional).
  • Page 6 High safety 8-input remote module for PL4 +D control panel. STG/OUT16-S 16 O/C card to be connected to PL4 +D to provide additional 16 outputs STG/8REL Plug and play relay board to be connected to STG/OUT16 to provide 8 relay outputs xxxx Power supply 24Vdc 2A for DIN plank.

  • Page 7: Block Diagram System With Pl4 +Dgas Control Unit

    1.1) Block diagram system with PL4 +D gas control unit LOOP Rs485 Pl4 +D option: the detectors could be connected directly on the loop in daisy-chain mode (1) RILEVATORI GAS ANALOGICI 4-20 mA / 4-20 mA ANALOG GAS DETECTORS (2) MODULO 8 INGRESSI ANALOGICI ST.G/IN8-S / ANALOG 8 INPUT MODULE ST.G/IN8-S...

  • Page 8: Installation

    INSTALLATION 2.1) Assembly and connections Insert the gas control unit on DIN plank. Fig. 2.1 a) Gas control unit and its box (optional) Connect the cable for power supply (24 Vdc) to the terminal block of gas control unit. Fig. 2.1 b) Power connection MT4412E Rev.2 15/10/2019 Pagina 8 di 30...

  • Page 9: 1) Unit Diagram And Part Identification

    2.1.1) Unit diagram and part identification 1- Power Supply (24 Vdc) 4- RS485 bus connection 2- Relay outputs (5) 5- 4 inputs 4-20 mA 3- USB port Fig. 2.1.1) Unit diagram and part identification MT4412E Rev.2 15/10/2019 Pagina 9 di 30...

  • Page 10: 2) Layout Pl4 +Dgas Control Unit

    2.1.2) Layout PL4 +D gas control unit Fig. 2.1.2) Layout PL4 +D gas control unit MT4412E Rev.2 15/10/2019 Pagina 10 di 30...
  • Page 11 2.1.3) Dip switch SD2, SD3 and SD4 settings The series of SD2 dip-switches is used to set the terminal unit to the RS485 bus of gas control unit. The series of SD3 dip switches allows to set the language of text on the display of the remote terminal.

  • Page 12: Field Device Connections

    Dip-switch 1: Baud Rate Bus RS485 Position Bus communication speed Detector and module compatibility Smart “S” gas detectors; ST.G/IN8-S and 115200 ST.G/OUT16-S modules Smart “3G” gas detectors; ST.G/IN8-S and 9600 ST.G/OUT16-S modules Dip-switches 2 and 3: RS485 bus communication protocol Detector and module Sw 2 Sw 3...

  • Page 13: 1) Detector Connection

    2.2.1) Detector connection Gas detectors can be connected to the PL4 +D gas control unit in two different ways, based on the detector output signal. 1) 4-20 mA analogue proportional output.
  • Page 14 Detectors with 4-20mA output Detectors with 4-20mA analogue output are either connected to the gas control unit, directly on the main board or via one remote 8-input STG/IN8-S module. The module may be connected remotely to the gas control unit. For connection, a detector with a 4-20mA analogue output requires a 3-conductor cable: 2 conductors for the power supply (usually from 12 to 28 Vdc - refer to the gas detector technical manual) and one conductor for the 4-20mA signal.
  • Page 15 Detectors with RS485 output Gas detectors provided with RS485 serial communication are connected directly to the RS485 bus of the PL4 +D gas control unit. The STG/IN8-S input module and STG/OUT16-S output module are also connected to the RS485 bus.
  • Page 16 Pl4 +D Al rilevatore o modulo successivo To the next detector or module Fig 2.2.1 c) Direct connection of detectors on the RS485 bus MT4412E Rev.2 15/10/2019 Pagina 16 di 30...
  • Page 17 Pl4 +D STG/IN8 MODULE + s - 4-20mA GAS DETECTOR (up to 8) Fig 2.2.1 d) Detector connection by STG/IN8-S MT4412E Rev.2 15/10/2019 Pagina 17 di 30...

  • Page 18: Stg/In8-Sremote Input Modules

    2.3) STG/IN8-S remote input modules STG/IN8-S remote modules are field mounted and connected to the gas control unit via RS485 buses. They are used to connect 8 x 4-20mA analogue gas detectors. Each module must be addressed using the rotary switches on the PCB. The address must be univocal and between 1 and 255 (1-247 for Modbus protocol).

  • Page 19: Stg/Out16-Sremote Output Modules

    2.4) STG/OUT16-S remote output modules STG/OUT16-S remote modules are field mounted and connected to the gas control unit via RS485 buses. They provide 16 Open Collector outputs (negative switch) with a programmable function for the remote activation of sirens, solenoid valves, relays, etc. Up to 2 8-relay boards can be connected to each STG/OUT16-S module, transforming the output from Open Collector to a voltage-free exchange contact.

  • Page 20: 1) Stg/8Rel Relay Expansion Board

    2.4.1) STG/8REL relay expansion board The STG/8REL 8-relay expansion board converts the O/C outputs of the STG/OUT16-S output module into voltage-free exchange contacts. Up to two relay boards can be connected to each output module. A relay board is directly connected to the output module (J1 connector) and a second relay board is connected to the former.
  • Page 21 Example If the two switches are positioned as above, RSW2 on 0 and RSW1 on D, the corresponding address in decimals is 13 (see table 1) If the address switches are set in this mode, RSW2 at 0 and RSW1 at D, the corresponding address in decimal numbers would be 13 (see table 1).

  • Page 22: Programming From Apc

    The chapter explains the procedures for the operation, powering on and maintenance of the PL4 +D gas control unit The PL4 +D gas control unit can only be programmed by means of a personal computer with the appropriate software. POWER O.

  • Page 23: System Status

    If the gas control panel has been programmed, when it is switched on the Warm Up screen appears. The Warm Up time is 3 minutes as default. Fig. 3.1 a) Warm Up screen If the system has been configurated, the display will show different channels, which correspond to the detectors connected.
  • Page 24 TEST UNSET EMERGENCY NORMAL It is the normal system operating status without alarms and faults. The screen in this status displays the channels (gas detectors) with gas concentration measured in real time. Fig. 3.2.1 a) Screen in Normal status ALARM The Alarm status is activated when one or more gas detectors measure a gas concentration higher than the alarm threshold set during the configuration of the gas control unit.

  • Page 25: User Level

    Fig. 3.2.1.c) Alarm1 event detail screen From the main screen, by pressing the MENU button and selecting ACTIVE EVENTS, it is possible to view the channels in Alarm/Fault status that have not yet been reset. FAULT The Fault status will be activated in the following situations: 1.

  • Page 26: The User Passwords Can Be Created And/Modified Just By The Pc Configuration Software

    1. OPERATOR level (O) 2. MAINTENANCE level (M) 3. ENGINEER level (E) Once logged in with a certain level, a letter in the top right side of the screen will inform about the level chosen, as follows: “O” for Operator. “M” for Maintenance and “E” for Engineer.

  • Page 27: Menu

    This is a particular malfunction status that can occur for the following two reasons: • Malfunctioning of the Vcc power supply of the gas control unit • Lack of 230 Vac primary power supply 3.3) Menu In normal status, the main screen shows the terminal name, the time and the indication to press the operative keys of vertical movement to visualize the connected detectors.

  • Page 28: Active Events And Event Management

    SYSTEM INFO information about the gas control unit (name, FW and HW versions, etc.) ACTIVE EVENTS (appears only if there are active events, i.e. Alarms or Faults that have not been reset) (*) sub-menus available only if the login is as Engineer (E). 3.4) Active events and event management By selecting ACTIVE EVENTS and pressing ENT, a list of current active events is...
  • Page 29 In this case pressing 2 RESET the screen image will simply refresh and delete the event line from the list 2. the user is not yet logged in. In this case the LOGIN dialogue window pops up and the user should key in the password.
  • Page 30 The aforementioned information does not bind the manufacturer, which reserves the right to make any changes that it deems useful for product improvement. For further information contact: Tel: +39 02 935.48.155 Sensitron S.r.l. Fax: +39 02 935.48.089 e-mail: sales@sensitron.it MT4412E Rev.2 15/10/2019...

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