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- Page 1 TQ4000 4 Channel Toxic and Flammable Gas Sensor Control Unit OPERATING MANUAL Tel: +44 (0) 1924 271013 TQ Environmental Ltd. Silkwood Court Email: sales@tqenv.com Wakefield Web: www.tqenv.com WF5 9TP United Kingdom Filename: 7970H6...
- Page 2 Page 2 of 27 Filename: 7970H8...
- Page 3 No part of the hardware or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of TQ Environmental LTD...
- Page 4 SAFETY WARNINGS FOR SAFETY REASONS, THE TQ4000 MUST BE INSTALLED, OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND UNDERSTAND THIS INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING THE TQ4000 THE OPERATION DESCRIBED IN THIS DOCUMENT IS THE INTENDED USE OF THE TQ4000.
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Page 5: Table Of Contents
TQ Environmental LTD Product Manual TQ 4000 Table of Contents INSTALLATION ....................7 TQ4000 SETUP AND CONFIGURATION ............10 Set Number of Channel ...................... 10 Set Number of Relays ......................10 Configure Channel ......................10 2.3.1 Set Location ......................... 10 2.3.2... - Page 6 Setting the Flammable Gas Sensor Head Voltage ............... 17 Setting the Sensor Zero ...................... 17 CALIBRATION AND SETUP ................19 Zero Adjustment ........................ 19 Span Adjustment ........................ 19 FRONT PANEL WARNING LED’S AND BUTTONS ..........20 Front Panel Warning Lamps....................20 Front Panel Button Functions .....................
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Page 7: Installation
1.3. Fit the gas detection control unit to the wall in the appropriate position. The TQ4000 can be fixed in any position to allow cable entry top or bottom. It is recommended that the unit be situated away from heavy electrical loads or equipment that emits high levels of RFI. - Page 8 Page 8 of 27 Filename: 7970H8...
- Page 9 TQ Environmental LTD Product Manual TQ 4000 Filename: 7970H8 Page 9 of 27...
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Page 10: Tq4000 Setup And Configuration
2. TQ4000 Setup and Configuration The TQ4000 can be configured via a menu system. The menu system is manipulated using the MENU, UP, DOWN, and SELECT buttons on the TQ4000 main board. The Menu System is password protected and when the MENU button is pressed the user is prompted to enter the system password. -
Page 11: Set Gas Name
TQ Environmental LTD Product Manual TQ 4000 <SPACE> character and press the SELECT button. When the SELECT button has been pressed the next character on the right will be displayed. To accept the channel location description the user must press the MENU button. -
Page 12: Set Alarms
using the UP and DOWN buttons. The standard available sensor units are as follows: PPM, %LEL, %VOL, and MGM. For the user defined sensor units option, the user must use the UP or DOWN buttons to cycle through the alphanumeric characters, pressing the UP and DOWN buttons simultaneously will toggle between uppercase and lowercase characters. -
Page 13: Set Alarm 1 Latch State
TQ Environmental LTD Product Manual TQ 4000 before the alarm is generated. During the alarm delay the appropriate alarm LED’s will flash intermittently while the gas concentration has exceeded the alarm set point. The default setting is for no alarm delay, that is, 0 seconds. -
Page 14: Set Relays
2.4. Set Relays This option is applicable to the selected channel only. If, for example, the Fault Relay number is required to be applicable for all channels then it would be more convenient to use the Set Common Relays menu option. 2.4.1. -
Page 15: Set Alarm 2 Relay
TQ Environmental LTD Product Manual TQ 4000 2.4.7. Set Alarm 2 Relay Pressing the SELECT button will assign the selected relay as the Alarm 2 relay. 2.4.8. Clear Alarm2 Relay Pressing the SELECT button will clear the selected relay as the Alarm 2 relay. -
Page 16: Set Zero
2.10. Exit Menu Pressing the SELECT button will exit from the main menu and the TQ4000 system will resume normal system operation. Page 16 of 27... -
Page 17: Initial Setting Up Of Flammable Sensor Cards
TQ Environmental LTD Product Manual TQ 4000 Initial Setting Up Of Flammable Sensor Cards On flammable sensors there is a requirement to set the zero on the electronic zero on the associated flammable sensor card. This is only required to be done once at installation, after installation any drift can be compensated by the zero procedure in set up. - Page 18 Page 18 of 27 Filename: 7970H8...
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Page 19: Calibration And Setup
TQ Environmental LTD Product Manual TQ 4000 Calibration and Setup It is important to ensure that the initial set up of all types of sensor is performed to ensure that they are wired correctly and pre calibration set ups have been observed and are used in the manner described. -
Page 20: Front Panel Warning Led's And Buttons
To inhibit a channel, that is, disable the relays for a particular channel; the user must press the UP button on the TQ4000 main board when the CHANNEL LED is indicating the desired channel. The INHIBIT LED will illuminate. -
Page 21: Mute
To release the hold function the user must keep the HOLD button pressed for a minimum of two seconds. The TQ4000 will then resume normal scanning of channels. 5.2.4. Lamp Test To test the front panel LED’s are operational, the user may press the... -
Page 22: Self Test Facilities
The user must then press the SELECT button on the TQ4000 main board to start the system test. To exit the system test the user must press the UP button on the TQ4000 main board. The TQ4000 will revert to normal system operation. -
Page 23: Fault Finding
PCB. Bring voltage up to 2.00V and recalibrate. Check that gas can is not empty and that there is an airtight seal around the gassing cup. For TQ flammable sensors use TQ gassing cup. 7.4. Flammable gas sensor moves erratically when gassed Check the control electronics by evoking test mode and allowing unit to cycle through. -
Page 24: Sensor Information
7970V. 8.3. Infra-red and other 3-wire 4-20mA Sensors 3 wire systems indicate that the sensor at the end of the TQ4000 requires power. The TQ4000 can adequately drive up to 3x24Volt sensors each requiring less than 0.25W per sensor. -
Page 25: Modbus Communications
Product Manual TQ 4000 Modbus Communications The TQ4000 unit features dual channel Modbus communications over 2 serial RS485 lines. This communication allows remote interrogation of the channel concentrations and the status of the channel alarms and fault conditions. It is also possible for remote alarm mute and alarm reset functions to be performed. - Page 26 Modbus Register Addresses For TQ4000 Input Register Starting Starting Number Number Number (0x04) Address(High) Address(Low) Registers(High) Registers(Low) of Bytes Station Number 0x00 0x01 0x00 0x01 Read (0x04) Write (0x10) Channel 1 Conc. 0x00 0x02 0x00 0x01 Channel 2 Conc. 0x00...
- Page 27 TQ Environmental LTD Product Manual TQ 4000 Filename: 7970H8 Page 27 of 27...
- Page 28 TQ4000 4 Channel Toxic and Flammable Gas Sensor Control Unit OPERATING MANUAL Tel: +44 (0) 1924 271013 TQ Environmental Ltd. Silkwood Court Email: sales@tqenv.com Wakefield Web: www.tqenv.com WF5 9TP United Kingdom Filename: 7970H6...
- Page 29 Page 2 of 27 Filename: 7970H8...
- Page 30 No part of the hardware or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of TQ Environmental LTD...
- Page 31 SAFETY WARNINGS FOR SAFETY REASONS, THE TQ4000 MUST BE INSTALLED, OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND UNDERSTAND THIS INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING THE TQ4000 THE OPERATION DESCRIBED IN THIS DOCUMENT IS THE INTENDED USE OF THE TQ4000.
- Page 32 TQ Environmental LTD Product Manual TQ 4000 Table of Contents INSTALLATION ....................7 TQ4000 SETUP AND CONFIGURATION ............10 Set Number of Channel ...................... 10 Set Number of Relays ......................10 Configure Channel ......................10 2.3.1 Set Location ......................... 10 2.3.2...
- Page 33 Setting the Flammable Gas Sensor Head Voltage ............... 17 Setting the Sensor Zero ...................... 17 CALIBRATION AND SETUP ................19 Zero Adjustment ........................ 19 Span Adjustment ........................ 19 FRONT PANEL WARNING LED’S AND BUTTONS ..........20 Front Panel Warning Lamps....................20 Front Panel Button Functions .....................
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Page 34: Installation
1.3. Fit the gas detection control unit to the wall in the appropriate position. The TQ4000 can be fixed in any position to allow cable entry top or bottom. It is recommended that the unit be situated away from heavy electrical loads or equipment that emits high levels of RFI. - Page 35 Page 8 of 27 Filename: 7970H8...
- Page 36 TQ Environmental LTD Product Manual TQ 4000 Filename: 7970H8 Page 9 of 27...
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Page 37: Tq4000 Setup And Configuration
2. TQ4000 Setup and Configuration The TQ4000 can be configured via a menu system. The menu system is manipulated using the MENU, UP, DOWN, and SELECT buttons on the TQ4000 main board. The Menu System is password protected and when the MENU button is pressed the user is prompted to enter the system password. -
Page 38: Set Gas Name
TQ Environmental LTD Product Manual TQ 4000 <SPACE> character and press the SELECT button. When the SELECT button has been pressed the next character on the right will be displayed. To accept the channel location description the user must press the MENU button. -
Page 39: Set Alarms
using the UP and DOWN buttons. The standard available sensor units are as follows: PPM, %LEL, %VOL, and MGM. For the user defined sensor units option, the user must use the UP or DOWN buttons to cycle through the alphanumeric characters, pressing the UP and DOWN buttons simultaneously will toggle between uppercase and lowercase characters. -
Page 40: Set Alarm 1 Latch State
TQ Environmental LTD Product Manual TQ 4000 before the alarm is generated. During the alarm delay the appropriate alarm LED’s will flash intermittently while the gas concentration has exceeded the alarm set point. The default setting is for no alarm delay, that is, 0 seconds. -
Page 41: Set Relays
2.4. Set Relays This option is applicable to the selected channel only. If, for example, the Fault Relay number is required to be applicable for all channels then it would be more convenient to use the Set Common Relays menu option. 2.4.1. -
Page 42: Set Alarm 2 Relay
TQ Environmental LTD Product Manual TQ 4000 2.4.7. Set Alarm 2 Relay Pressing the SELECT button will assign the selected relay as the Alarm 2 relay. 2.4.8. Clear Alarm2 Relay Pressing the SELECT button will clear the selected relay as the Alarm 2 relay. -
Page 43: Set Zero
2.10. Exit Menu Pressing the SELECT button will exit from the main menu and the TQ4000 system will resume normal system operation. Page 16 of 27... -
Page 44: Initial Setting Up Of Flammable Sensor Cards
TQ Environmental LTD Product Manual TQ 4000 Initial Setting Up Of Flammable Sensor Cards On flammable sensors there is a requirement to set the zero on the electronic zero on the associated flammable sensor card. This is only required to be done once at installation, after installation any drift can be compensated by the zero procedure in set up. - Page 45 Page 18 of 27 Filename: 7970H8...
-
Page 46: Calibration And Setup
TQ Environmental LTD Product Manual TQ 4000 Calibration and Setup It is important to ensure that the initial set up of all types of sensor is performed to ensure that they are wired correctly and pre calibration set ups have been observed and are used in the manner described. -
Page 47: Front Panel Warning Led's And Buttons
To inhibit a channel, that is, disable the relays for a particular channel; the user must press the UP button on the TQ4000 main board when the CHANNEL LED is indicating the desired channel. The INHIBIT LED will illuminate. -
Page 48: Mute
To release the hold function the user must keep the HOLD button pressed for a minimum of two seconds. The TQ4000 will then resume normal scanning of channels. 5.2.4. Lamp Test To test the front panel LED’s are operational, the user may press the... -
Page 49: Self Test Facilities
The user must then press the SELECT button on the TQ4000 main board to start the system test. To exit the system test the user must press the UP button on the TQ4000 main board. The TQ4000 will revert to normal system operation. -
Page 50: Fault Finding
PCB. Bring voltage up to 2.00V and recalibrate. Check that gas can is not empty and that there is an airtight seal around the gassing cup. For TQ flammable sensors use TQ gassing cup. 7.4. Flammable gas sensor moves erratically when gassed Check the control electronics by evoking test mode and allowing unit to cycle through. -
Page 51: Sensor Information
7970V. 8.3. Infra-red and other 3-wire 4-20mA Sensors 3 wire systems indicate that the sensor at the end of the TQ4000 requires power. The TQ4000 can adequately drive up to 3x24Volt sensors each requiring less than 0.25W per sensor. -
Page 52: Modbus Communications
Product Manual TQ 4000 Modbus Communications The TQ4000 unit features dual channel Modbus communications over 2 serial RS485 lines. This communication allows remote interrogation of the channel concentrations and the status of the channel alarms and fault conditions. It is also possible for remote alarm mute and alarm reset functions to be performed. - Page 53 Modbus Register Addresses For TQ4000 Input Register Starting Starting Number Number Number (0x04) Address(High) Address(Low) Registers(High) Registers(Low) of Bytes Station Number 0x00 0x01 0x00 0x01 Read (0x04) Write (0x10) Channel 1 Conc. 0x00 0x02 0x00 0x01 Channel 2 Conc. 0x00...
- Page 54 TQ Environmental LTD Product Manual TQ 4000 Filename: 7970H8 Page 27 of 27...
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