Crowcon Vortex User Manual

The products covered by this manual are Vortex, Vortex Rack, Vortex
Panel and Vortex DIN. The topics covered by the manual are installation,
technical information, operation and maintenance.

Part No M07211, Issue 7 December 2009

VORTEX

12 Channel Gas and

Fire Control Panel

MANUAL

Vortex Manual Contents

Issue 7 December 2009

iii

INTRODUCTION

CONTENTS

CONTENTS

1 Introduction.............................................................................................. 1

1.1 What this manual is for ......................................................................... 1

1.2 What is Vortex? .................................................................................... 1

1.3 Who should use this manual ................................................................ 1

1.4 What this manual contains ................................................................... 2

2 System Overview ..................................................................................... 3

2.1 General ................................................................................................. 3

2.2 System description ............................................................................... 3

2.2.1 System modules and options ..................................................... 3

2.2.2 Input/output capability ................................................................ 4

2.2.3 Digital Communications ............................................................. 5

2.2.4 Specification ............................................................................... 5

2.2.5 Approvals ................................................................................... 6

3 Installation ................................................................................................ 7

3.1 General ................................................................................................. 7

3.2 Before installation ................................................................................. 7

3.3 Installation of a pre-configured Vortex system ..................................... 7

3.4 Installation of an un-configured Vortex system .................................... 9

3.4.1 General ...................................................................................... 9

3.5 Building a Vortex system .................................................................... 10

3.5.1 Building the system .................................................................. 10

3.5.2 Installing the system ................................................................. 11

3.6 Cabling ............................................................................................... 12

3.7 Circuit Breaker .................................................................................... 13

3.8 Zero adjustment and calibration of Vortex.......................................... 14

3.8.1 General .................................................................................... 14

3.8.2 Zero Adjustment and Calibration procedure ............................ 14

4 Technical information: Vortex .............................................................. 16

4.1 General ............................................................................................... 16

4.2 Node Controller Module ...................................................................... 17

4.2.1 Functions of the Node Controller Module ................................. 17

4.2.2 Node Controller Module indicators, switches and connectors . 18

4.2.3 Configuring the Node Controller Module .................................. 19

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CONTENTS

4.3 The Bus Rail and electrical connections ............................................. 20

4.4 Quad Channel Input Module ............................................................... 21

4.4.1 Functions of the Quad Channel Input Module .......................... 21

4.4.2 Configuring the Quad Channel Input Module ........................... 22

4.5 Relay Output Module .......................................................................... 25

4.5.1 Functions of the Relay Output Module ..................................... 25

4.5.2 Configuring the Relay Output Module ...................................... 26

4.5.3 Configuring the Relay Logic ..................................................... 30

4.6 The Display Module ............................................................................ 31

4.6.1 Functions of the Display Module .............................................. 31

4.6.2 Display Module Features .......................................................... 33

4.7 Power Monitoring Module ................................................................... 35

4.7.1 Functions of the Power Monitoring Module .............................. 35

4.7.2 Removing the 5-Way Cable Assembly ..................................... 37

4.7.3 Mounting the Power Monitoring Module on a DIN Rail ............. 37

4.7.4 Backup batteries ....................................................................... 38

4.7.5 Power Failure ........................................................................... 39

5 Technical information: Field d evices .................................................. 40

5.1 General ............................................................................................... 40

5.2 Gas Detectors ..................................................................................... 40

5.2.1 Gas detector location ............................................................... 40

5.3 Fire detectors ...................................................................................... 41

5.3.1 Fire detector location ................................................................ 42

5.4 Connections for audible/visual alarms ................................................ 42

6 Operation ................................................................................................ 43

6.1 General ............................................................................................... 43

6.2 Monitoring with the Display Module .................................................... 43

6.3 Alarm conditions and faults................................................................. 44

6.3.1 Display Module ......................................................................... 44

6.3.2 Internal sounder and relays ...................................................... 44

6.4 Fault Messages .................................................................................. 44

6.4.1 Channel Faults ......................................................................... 44

6.4.2 Power Status ............................................................................ 46

6.4.3 System Faults. .......................................................................... 47

7 Maintenance ........................................................................................... 49

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INTRODUCTION

CONTENTS

7.1 Detector Functional Testing ............................................................... 49

7.2 Inhibiting input .................................................................................... 49

7.3 Re-calibration of Vortex ...................................................................... 49

7.4 Channel Test Mode ............................................................................ 51

7.4.1 Channel Test Mode procedure................................................. 51

7.4.2 Setting alarm levels .................................................................. 53

7.5 Lamp test ............................................................................................ 53

7.6 Event logging ...................................................................................... 54

7.7 Module replacement ........................................................................... 55

7.8 Mounting and dismounting DIN Rail modules .................................... 55

7.9 Changing the Batteries ....................................................................... 56

Appendix A: Glossary ................................................................................... 58

Appendix B: Electrical connections ............................................................ 60

Appendix C: List of spare parts ................................................................... 65

Appendix D: Crowcon detector range ......................................................... 66

Appendix E: Vortex configuration ............................................................... 68

Appendix F: Earthing .................................................................................... 71

Introduction .................................................................................................. 71

Definitions .................................................................................................... 71

Questions..................................................................................................... 71

Diagrams ..................................................................................................... 74

Diagram 1 ............................................................................................. 74

Diagram 2 ............................................................................................. 75

Diagram 3 ............................................................................................. 76

Diagram 4A ........................................................................................... 78

Diagram 4B ........................................................................................... 79

Diagram 5A ........................................................................................... 80

Diagram 5B ........................................................................................... 81

Wiring Standards .................................................................................. 81

WARRANTY STATEMENT ............................................................................ 83

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CONTENTS

TABLE OF FIGURES

Figure 1 : General Assembly of Vortex Modules ............................................... 4

Figure 2: Vortex system in Standard Enclosure ................................................ 9

Figure 3: Node Controller Module ................................................................... 17

Figure 4: Bus Rail Assembly Details ............................................................... 20

Figure 5: Quad Channel Input Module ............................................................ 21

Figure 6: Switches on Quad Channel Input Module ........................................ 22

Figure 7: Relay Output Module ........................................................................ 25

Figure 8: Relay Ouput Module Selection Switch ............................................. 27

Figure 9: Back of Display Module .................................................................... 31

Figure 10: Front of Display Module.................................................................. 32

Figure 11: Power Monitoring Module ............................................................... 35

Figure 12: Alternative mountings for the Power Monitoring Module ................ 38

Figure 13: Representation of a fire detection circuit ........................................ 41

Figure 14: Module on DIN Rail, and method of removal ................................. 56

Figure 15: Removing batteries from Vortex Standard Enclosure .................... 57

Figure 16: Connection schematic for the Vortex systemError! Bookmark not defined.

Figure 17: Wiring diagram for the Node Controller Module ............................. 62

Figure 18: Wiring diagram for the Quad Channel Input Module ...................... 63

Figure 19: Wiring diagram for the Relay Output Module ................................. 64

Figure 20 Decision Tree for determining Earthing Requirements ................... 73

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INTRODUCTION

CONTENTS

LIST OF TABLES

Table 1: Vortex options ..................................................................................... 1

Table 2: Which sections of this manual to read ................................................ 2

Table 3: List of Vortex modules ......................................................................... 3

Table 4: Vortex Specification ............................................................................ 5

Table 5: Cable characteristics ......................................................................... 13

Table 6: Node Controller Module indicators, switches and connectors .......... 18

Table 7: System Configuration Properties ...................................................... 19

Table 8: Quad Channel Input Module switch settings ..................................... 22

Table 9: Detector channel configurable properties ......................................... 23

Table 10: Features of the Relay Output Module ............................................. 25

Table 11: Relay Output Module switch settings .............................................. 26

Table 12: Relay configurable properties .......................................................... 27

Table 13: Relay output types ........................................................................... 28

Table 14: Relay Logic configurable properties ................................................ 31

Table 15: Display module features .................................................................. 33

Table 16: Features of the Power Monitoring Module ...................................... 36

Table 17: List of channel faults ....................................................................... 45

Table 18: List of Power Status LED codes ...................................................... 46

Table 19: List of Node Controller Module LED fault codes ............................. 47

Table 20: Channel test display sequences ...................................................... 52

Table 21: Data recorded in the Event Log....................................................... 54

Vortex Manual Introduction

Issue 7 December 2009 1

INTRODUCTION

1 INTRODUCTION

1.1 What this manual is for

This manual describes the installation, configuration and operation of the Vortex gas and fire detection
system and its components.

Some of the functionality described in this manual may not be available with some units. Contact
Crowcon concer ning upgrades of e xi s ting systems, if required.

1.2 What is Vortex?

Vortex is a modular gas and fire detection system, designed to monitor remote 4-20mA and
conventional loop powered fire detectors. Other devices may be used as advised by Crowcon. It can
operate flexibly assigned and voted relays if pre-set levels of gas are exceeded or if smoke or fire is
detected. These relay outputs may be used to drive audible and/or visible alarms.The built-in Modbus
communications interface allows multiple Vortex systems to be connected to industry-standard control
monitoring systems.

The Vortex system may be mounted in a variety of enclosures, the options are listed in Table 1

Table 1: Vortex options

Vortex Standard wall-mounted enclosure with display.

See Figure 2: Vortex system in Standard Enclosure.
Vortex Rack* Vortex system with a 19-inch rack-mounted display.
Vortex Panel* Vortex system with a panel-mounted display.
Vortex DIN* Vortex system with no display.

Options marked * can be supplied as modules to be mounted in your own enclosure.

The system can be supplied pre-configured with detectors and output devices, the configuration is
summarised on the Specification Sheet provided with the system. The configuration can be modified
using the VortexPC software.

1.3 Who should use this manual

You may not need to read the whole of this manual. You will be guided to the sections that you
require.

You should cons ul t this manual if you:

• Use the Vortex system for monitoring fire or gases, and respond to alarms

• Carry out routine maintenance on the Vortex system and its detectors

• Configure the Vortex system

Introduction Vortex Manual

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INTRODUCTION

• Install the Vortex system and its detectors

• Require technical information on Vortex

1.4 What this manual conta ins

This manual cover s the following topics:

• An overview of the Vor tex system

• Installation of Vortex systems ready configured and supplied with detectors

• Installation and configuration of Vortex to work with your own detectors

• Installation of Vortex when suppli ed as modules for mounting in your own equipment

• Configuration and technical information

• Day-to-day operation of Vortex, and accepting alarms and faults

• Routine maintenance, recalibration and testing

Table 2 lists the sections to read for particular kinds of information. If you require details not covered
in this manual, please contact Crowcon Technical Support.

Table 2: Which sections of this manual to read

If you Refer to

Use the Vortex system for monitoring
fire or gases, and respond to alarms

Chapter 6

Carry out routine maintenance and
testing on the Vortex system and its
detectors

Chapters 2 and 7, and references
to other sections

Install, calibrate and reconfigure a
Vortex system

Chapters 2 to 5

Vortex Manual System Overview

Issue 7 December 2009 3

OVERVIEW

2 SYSTEM OVERVIEW

2.1 General

This chapter gives an overvie w of the Vortex system, its modules and their interconnection. Vortex
can be supplied in a number of variations depending on the modules and enclosures required.

If you simply use Vortex for monitoring and responding to alarms, it is not necessary to read this
chapter. See chapter 6, Operation.

In all other cases, we recommend that you read this section.

2.2 System description

2.2.1 System modules and options

The basic parts of the Vortex system are listed in Table 3. Some are optional. The essential
components are marked with an asterisk (*).

Table 3: List of Vortex modules

Module Description

*Node Controller Module Central control module of system.
*Bus Rail Electrical connections and communications

between modules.

*Quad Channel Input
Modules

Control and measurement of input, up to 4
channels per mod ul e, maximum 3 modules.

Relay Output Module Control of output, up to 8 channels per

module, ma ximum 4 modules.
Display Module User display and limited configuration.
*Power Monitoring Module Control and protection of power supply.
Mains power supply unit If the Mains Power Supply Unit is omitted, a

suitable dc power supply must be provided.

Figure 1 shows the gener al assembly of the modules within t he Vortex system. The number and
arrangement of the modules will vary depending on your Vorte x system configuration.

System Overview Vortex Manual

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OVERVIEW

Figure 1 : General Assembly of Vortex Modules

2.2.2 Input/output capability

The Vortex system is a control panel for gas and fire detectors. It can be used with the following
detectors:

• 2 wire sink, or 3 wire sink or source 4-20mA detectors. Crowcon manufactures a wide range of

flammable and toxic gas detectors and oxygen detectors. See Appendix D for the Crowcon range.
The detectors of many other manufacturers can also be used, including 4-20mA fire detectors,
however the behaviour of these det ectors should not be confused with that of the conventional
loop powered fire detectors referred to throughout this manual as Fire Detectors.

• Conventional loop-powered fire detectors and manual call points (up to twenty devices) with a

maximum loop current of 60mA. Only 1 fire loop may be connected to each Quad Channel Input
Module. Vortex has been tested for use with the Series 60 range of smoke detectors available
from Apollo. Other manufacturers’ detectors, for example, the Thorn MS302Ex flame detector,
may also be used. Contact Crowcon for further details.

Vortex Manual System Overview

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OVERVIEW

Vortex can control up to 32 fully voted relay outputs, selectable from a number of channel and system
functions. The Quad Channel Input Modules and Relay Output Modules (section 2.2.1) can be
combined as follows:

Number of Quad

Channel Input
Modules

Maximum number
Relay Output Mo dules

Vortex Up to 3 3
Up to 2 4
Vortex DIN
Vortex Rack
Vortex Panel

Up to 3 4

2.2.3 Digital Communications

There is an RS232 configuration port on the Node Controller Module which may be used together with
the VortexPC software running under the Microsoft

®

Windows® operating system to configure the

system.

There is an RS485 Modbus port that can be used by personal computers, Programmable Logic
Controllers and Distributed Co ntrol Systems to monitor the Vortex system.

(NB actually 2.2.4) Specification

The Vortex system specification is listed below. Table 4: Vortex Specification

Storage temperature -25 to +55 degrees C
Operating temperature -10 to +40 degrees C
Humidity 0 to 99% relative humidity, non-condensing

at 40 degrees C

Ingress Protection Vortex – IP65

Vortex Panel – The display and label fixing
meets IP65 but the overall rating depends on
the remainder of the enclosure.

For VortexDIN and Vortex Rack the rating
depends on the enclosure used.

Impact Able to withstand normal wear and tear

associated with installation

Safety The control system is not intended for use in

hazardous areas. Earthi ng for use with IS
detectors is discussed in Appendix F.

System Overview Vortex Manual

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OVERVIEW

Power supply voltage Vortex

20-30V dc 5A
110-120V ac 60Hz 3.2A
220-240V ac 50Hz 1.6A
Other Vortex systems are dependent on the

size of the system and PSU fitted

Backup batteries Vortex: Two series 12V, 2Ah batteries.

Larger capacity backup systems are
available.

Other Vortex systems are dependent on the
size of the system and PSU fitted.

(NB actually 2.2.5) Approvals

Vortex complies with the following:

• Low Voltage Directive EN61010-1:1993, Safety requirement for electrical equipment for

measurement, control and laboratory use, Part 1.

• EMC EN50270:1999, Electromagnetic Compatibility – Electrical apparatus for the detection and

measurement of combustible gases, toxic gases and oxygen.
Note: this industry specific standard replaces compliance with EN 50081 and EN 50082 Generic

EMC standards.

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INSTALLATION

3 INSTALLATION

3.1 General

This chapter describes the installation procedures for Vortex together with associated detectors and
output devices.

If you simply use Vortex for monitoring and responding to alarms, it is not necessary to read this
chapter. See chapter 6, Operation.

3.2 Before installation

Before installing a Vortex system along with its field devices, ensure that you have read the
instructions in this chapter, and that you understand the use of the Display Module push-buttons and/or
the VortexPC software where they are relevant to your installation. See section 4.6 for details of the
Display Module functions.

Each field device has its own Installation, Operating and Maintenance Instructions. Please refer to the
instructions provided with the devices installed with your system.

Local regulations and installation practices for electr ic a l e quipment vary from country to country.
Ensure that you are familiar with those that apply locally before you use this manual to install or use a
Vortex system. Further advice is available from Crowcon if required.

The Vorte x s yste m is intended for use i n non-hazardous areas. Field devices may be mounted in
flammable atmospheres. Check that the equipment to be installed is suitable for the area classification.
Site procedures should be followed in attempting installation or maintenance of any field device.
Crowcon recommends that the installation of a Vortex system be carried out by people with experience
of installing electrical equipment in potentially hazardous areas. Advice on e arthing requirements can
be found in Appendix F.

Vortex is suitable for use in a range of environments. See section 2.2.4 for d e ta ils. If a Vortex unit is
fitted outside and may be subjected to excessive heating by high levels of direct sunlight, an
appropriate shade must be provided.

3.3 Installation of a pre-configured Vortex system

This section describes how to get started with any Vortex system that has been pre-configured for the
detectors that were supplied with it.

See the Specification Sheet provided with your system for full details of its configuration.

Figure 1 on page 4 shows the layout of the modules within the Vortex system. The number and
arrangement of the modules will vary depending on your Vorte x configuration.

Installation Vortex Manual

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INSTALLATION

1. Ensure that the power supply is correct for the system (see section 4.3 and Table 16 on page 36).

If your Mains Power S upply Unit has a voltage switch, ensure it is on the correct setting for your
mains supply.

2. Ensure that a circuit breaker that complies with regulations is installed for the system power

supply. See section 3.7.

3. Place the enclosure or cabinet in its working position. Consider issues of location, cabling, and

earthing discussed in sections 3.6 and 5.2 and Appendix F.
The standard enclosure i s supported on screws through the two top lugs, and held against the wall

with the two bottom lugs. (see Figure 2)

4. Install the detectors. See section 5.2.1 for information on gas detector location, and section 5.3.1

for fire detectors.

5. Install the output devices. See sectio n 5.4.

6. Connect the RS485 port to external equipment, as required.

7. If battery backup is installed, insert the batter y connector at the top right of the Power Monitoring

Module (see Figure 11 on page 35). This connects the system to the battery backup. Ensure that
the Power Monitoring Module is connected to the Bus Rail with the cable.

If the battery has enough charge, power-up may occur at this point (see step 8).

8. Connect the external p ower supply. The green LED on the P ower Monitoring Module is

illuminated. The system performs a lamp test and audible alarm test within a few seconds.
After this test, it is normal for fault conditions to occur because devices are not yet connected.

Press ACCEPT/RE SET to silence the audible alarm.

9. Connect and power up the detector s one at a time by inserting the terminal plugs into the sockets

at the top and bottom of the Quad Channel Input Modules. The wiring diagram is shown in
Figure 18, Appendix B.

10. Write the detector locations on the label inside the enclosure or cabinet.

11. Connect the output devices one at a time attaching them to the Relay Output Modules, as shown

in the wiring diagram in Figure 19, Appendix B.

12. Ensure that the display is cycling through the channels by pressing the RUN button.

13. Calibra te the detectors, according to the instructions supplied with them.

14. Calibrate the channels on the Quad Channel Input Module, as described in section 3.8.

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INSTALLATION

Figure 2: Vortex system in Standard Enclosure

3.4 Installation of a n un-configured Vorte x system

3.4.1 General

This section describes how to get started if your Vortex system was not supplied ready-configured, and
you need to configure it for your own detectors.

It also applies if you wish to reconfigure an existing system, for example, if you are installing new
detectors or alarms, or if you are adding new Quad Channel Input Modules or Relay Output Modules
to your system, or changing them.

1. Ensure that the power supply is correct for the system (see section 4.3 and Table 16 on page 36).

If your Mains Power S upply Unit has a voltage switch, ensure it is on the co rrect setting fo r your
mains supply.

2. Ensure that a circuit breaker that complies with regulations is installed for the system power

supply. See section 3.7.

3. Place the enclosure or cabinet in its working position. Consider issues of location, cabling and

earthing discussed in sections 3.6 and 5.2 and Appendix F.
The standard enclosure is supported on screws through the two top lugs, and held aga inst the wall

with the two bottom lugs.

Installation Vortex Manual

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INSTALLATION

4. Install the detectors. See section 5.2.1 for information on gas detector location, and section 5.3.1

for fire detectors.

5. Install the output devices. See sectio n 5.4.

6. Connect the RS485 port to external equipment, as required.

7. If battery backup is installed, insert the battery connector at the top right of the Power Monitoring

Module (see Figure 11, page 35). This connects the system to the battery backup.
If the battery has enough charge, power-up may occur at this point (see step 8).

8. Connect to the power. The system does a lamp test and audible alarm test.

After this test, it is normal for fault conditions to occur because devices are not yet connected.
Press ACCEPT/RESET to silence the audible alarm.

9. Connect the system to a PC and configure the system using VortexPC. See VortexPC Help for

instructions on how to do this.

10Configure the Quad Channel Input Mo dule switches. See section 4.4.2 for details.

Instructions for removing and mounting modul es on the DIN Rail are in section 7.8.

11Connect and power up the detectors one at a time by inserting the terminal plugs into the

sockets at the top and bott om of the Quad Channel Input Modules. The wiring diagr am is shown
in Figure 18, Appendix B

12Calibrate each detector according to the instructions supplied with the devices. Calibrate the

channels on the Quad Channel Input Module, as described in section 3.8.
13Write the detector locations on the label inside the enclosure or cabinet.

10. 14Co nfi gure the Relay Output Module switches. See section 4.5 for details.

Instructions for removing and mounting modul es on the DIN Rail a r e in section 7.8.

11. 15Co nnect and power up the output devi ces one at a time. Attach them to the Relay Output

Modules, as shown in the wiring diagra m in Figure 19, Appendix B.

16Ensure that the d i s play is cycling through the channels by pressing the RUN button.

3.5 Building a Vortex s ystem

This section provides instructions on building and installing a Vortex system inside your own cabinet
or racking.

3.5.1 Building the system

1. Assemble the Bus PCB in the DIN Rail, and mount the DIN R ail in the casing. I f you are using

two DIN Rails, mount them so that they can be connected by the interconnection ribbon cable,
which is the ribbon cable with two 10-way connectors.

2. Configure the Quad Channel Input Module switches. See section 4.4.2 for details.

3. Configure the Relay Output Module switches. See section 4.5 for details.

4. Assemble the modules on the Bus Rail(s). To reduce interference with the input channels when

switching heavy loads, the R elay Output Modul es should be o n t he right of the Quad Channel
Input Module s . The Node Controller Module should be at the left, as in Figure 1.

Instructions for mounting and removing mod ules on the DIN Rail are in section 7.8.

Vortex Manual Installation

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INSTALLATION

5. IMPORTANT FOR SAFETY. If the system is Vortex DIN, Vortex Panel or Vortex Rack and

does not use the 5-way cable assembly from the power monitor module to the standard vortex
mains power supply unit, then the cable assembly should be removed according to section 4.7.2.

Mount the Power Monitoring Mo dule on the DIN Rail according to section 4.7.3.

6. Ensure the power supply is correct for the system (see section 4.3 and Table 16). The Mains

Power Supply Unit, if fitted, must be appropriately earthed. If your Mains Power Supply Unit has
a voltage switch, ensure it is on the correct setting for your mains supply.

7. The backup batteries, if fitted, must be mounted in an upright position and the safety valves must

not be covered. The batteries must not be enclosed in an unventilated space to avoid the build-up
of any gas as the result of malfunction.

8. Mount the Display Module in an appropriate position.

For Vortex Rack this is simply a matter of fixing the display into a 19 inch rack system.
For Vortex Panel the template supplied should be used to make the holes in the panel. Then

the display and associated metal work is fitted to the rear of the panel with countersunk
screws. The label is fitted to the front of the panel. Care is required when fitting the label
because the adhesive is very strong and any misplacement of the label cannot be corrected
without risking the quality of the seal from the label to the panel.

9. Make the electrical connections, as shown in the schematic of Appendix B Figure 16: Connection

schematic for the Vortex system. For essential information about earthing, see Appendix F.

Every effort has been made to provide instructions which result in a system that maintains compliance
with the LVD and EMC standards (see section 2.2.5). Ultimately it is the customers responsibility to
follow these instructions in order that the final system remains compliant with the standards.

3.5.2 Installing the system

1. Place the system in its working position. Consider issues of location, cabling and earthing

discussed in sections 3.6 and 5.2 and Appendix F.

2. Ensure that a circuit breaker that complies with regulations is installed for the system power

supply. See section 3.7.

3. Install the detectors. See section 5.2.1 for information on gas detector location, and section 3.6

and 5.3.1 for fire detectors.

4. Install the output devices. See sectio n 5.4.

5. Connect the RS485 port to external equipment, as required.

6. If battery backup is installed, insert the battery connector at the top right of the Po wer Monitoring

Module (see Figure 11, page 35). This connects the system to the battery backup.
If the battery has enough charge, power-up may occur at this point (see step 7).

7. Connect to the power. The system does a lamp test and audible alarm test.

After this test, it is normal for fault conditions to occur because devices are not yet connected.
Press ACCEPT/RE SET to silence the audible alarm.

8. Connect and power up the detector s one at a time by inserting the terminal plugs into the sockets

at the top and bottom of the Quad Channel Input Mod ules. The wiring diagram is shown in
Figure 18, Appendix B.

Installation Vortex Manual

12 Issue 7 December 2009

INSTALLATION

Configure the channels. See section 4.4.2.
Calibrate each detector according to the instructions supplied with the devices. Calibrate the

channels on the Quad Channel Input Module, as described in section 3.8.

9. Write the detector locations on the label inside the enclosure or cabinet.

10. Co nnect and power up the output devices one at a time. Attach them to the Relay Output

Modules, as shown in the wiring diagra m in Figure 19, Appendix B.
Configure the relays. See sections 4.5.2 and 4.5.3.

11. Ensure that the display is cycling through the channels by pressing t he RUN button.

3.6 Cabling

The cabling of gas detectors, fire detectors and alarms and other output devices is an important matter.

Cabling to a detector must be in accordance with the recognised standards of the appropriate authority
in the country concerned, and it must meet the electrical requirements of the detector.

• For non-IS devices, Crowcon recommends the use of steel wire armoured (SWA) cable. Suitable

explosion-proof glands must be used.

• For IS devices, Crowcon recommends the use of twisted pair cable with overall screen and

sheath. Suitable weatherproof glands must be used. IS devices must be used with a suitable Zener
Barrier or Galvanic Isolator when used in a hazardous area.

• For fire detectors, Crowcon recommends the use of twisted-pair cable, screened with an overall

protective sheath that is fireproof, for example, Pirelli FP200 or similar. Suitable weatherproof
glands must be used. The maximum acceptable loop resistance is 100ohm.

Alternative cabling techniques, such as steel conduit, may be acceptable provided that appropriate
standards are met.

The minimum acceptable supply voltage measured at the detector and the maximum current drawn by
that detector is different for each device. Please refer to the relevant Installation, Operating and
Maintenance Instructions provided with each detector to calculate the maximum cable distances
allowed for different cable types. The maximum cable distance allowed is dependent upon the
installation, for example, whether Zener Barriers or Galvanic Isolators are required (as for IS devices)
or not.

When calculating the maximum cable length for a detector, take the minimum supply voltage at the
Quad Channel Input Module as 18V at 350mA for a 3-wire detector head, 19.8V at 25.8mA for a 2­wire head. Typical cable characteristics are shown in Table 5.

Vortex Manual Installation

Issue 7 December 2009 13

INSTALLATION

Table 5: Cable characteristics

c.s.a

(mm

2)

See note

Typical

Resistance per

Km of Cable

(Ohms)

Typical Loop

Resistance per

Km of Cable

(Ohms)

0.5 (20) 39.0 78.0

1.0 (17) 18.1 36.2

1.5 (15) 12.1 24.2

2.5 (13) 8.0 16.0

Note: Approximate c.s.a. in awg given in brackets.

Cable lengths should be calibrated according to the equations defined in the detector instructions sheet
and the cable and Vortex characteristics specified above.

Vortex provides a number of internal and external earth terminals for safety earth and screen
terminations. See Appendix F for further information on earthing.

Vortex has been tested and found to be compliant with EMC regulations using the following cabl e and
gland configurations:

• SWA cable and SWA glands with electrical termination of the armour to the casing via the gland

• Screened cable with the screen terminated inside the casing via a metal tag attached to the gland,

or terminated at the earth stud.

• Screened cable using an EMC gland where the screen is terminated to the enclosure via the gland

The Vortex standard enclosure contains cable entries with knockout plugs (18 at the top and 18 at the
bottom). These can be fitted with a standard M20 cable gland.

3.7 Circuit Breaker

If the equipment is permanently connected to a mains supply then a circuit breaker must be include d in
the installation, in order to comply with the requirements of EN 61010-1 (Low Voltage Directive).

The circuit breaker must be close to Vortex and within easy reach of the operator. It must be marked as
the disconnecting device for the Vortex.

The circuit breaker must comply with the relevant requirements of IEC 947-1 and IEC 947-3. The
protective earth must not be disconnected even when the breaker is activated.

Installation Vortex Manual

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INSTALLATION

3.8 Zero adjustment and c alibration of Vor t e x

3.8.1 General

Calibration must be carried out separately on the individual detectors and on associated Quad Channel
Input Module s in the Vortex system. Calibrate the detector first, for the calibration procedure, please
refer to the relevant Installation, Operating and Maintenance Instructions provided with the detector.
Ensure at all times that local legislation and codes of practice are complied with.

Calibration gas and accessories are available from Crowcon.The instructions below use the Display
Module. Ensure that you are familiar with the Display Module functionality (section 4.6) and the
Channel Test Mode (section 7.4) before commencing.

If you are using VortexPC, the software has Zero and Calibration Wizards to enable you to carry out
the calibration easily. For Vortex DIN, this is the only method. See VortexPC Help for de ta ils.

If you are calibrating a Quad Channel Input Module and detector for the first time, Crowcon
recommends that two people are involved. One person should be at the detector and the other at the
control panel. When gas is applied to the detector in the field the person at the control panel can check
that the detector is connected to the correct Quad Channel Input Module by observing the gas reading
on the Display Module or on the connected PC.

3.8.2 Zero Adjustment and Calibration procedure

To adjust the zero and calibrate the Quad Channel Input Module for a channel using the Display
Module buttons:

1. Inhibit the Quad Channel Input Module of the channel to be calibrated by pressing the

appropriate ZONE INHIBIT button on the back of the Display Module.
The calibration can be carried out without inhibiting the channel, but associated relays and

audible and visual alarms may be triggered.

2. Ensure that the associated detector is reading zero level (4mA for a gas detector):

• For an oxygen detector, the sensor must be disconnected from the current amplifier at the

detector head. For intelligent oxygen detectors refer to the Installation, Operating and
Maintenance Instructions supplied with the detector.

• For other gas detectors, the detector should be in free mobile air.

• For other 4-20mA devices ensure that the input is 4mA.

• For a fire detector loop, disconnect the fire loop current connector at the Quad Channel Input

Module.

3. Using the HOLD and STEP buttons, select the channel to adjust.

4. Once the display is held on the appropriate channel press the CHANNEL TEST button on the

inside of the Display Module. The display should show GL for a gas detector or FL for a fire
detector, and the detector level reading (this should be approximately zero).

5. Press t he ZE RO button. The display should read 0.

If there is an E008 fault, it indicates that the incoming signal is too far from the nominal zero
level to allow compensation. Check that the detector is wired correctly, the Quad Channel Input

Vortex Manual Installation

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INSTALLATION

Module detector type switch setting is correct and that the detector input is 4mA or open circ uit
for a fire loop.

6. Provided that zero adjustment was successful, reconnect the sensor (for oxygen detectors only) or

connector (for fire detectors only).

7. For an oxygen detector, expose the detector to free mobile air. Ensure that the display is showing

GL and the current gas level reading. Allow this reading to stabilise.
For other gas detectors, apply calibration gas to the detector (normally half scale, but must be

greater than 20% of full scale). Ensure that the display is showing GL and the current ga s l evel
reading. Allow enough time for the detector to settle (typically two minutes).

For a fire detector, connect an ammeter into the channel circuit. Ensure that the display is
showing FL and operate a manual call point. If the circuit has no manual call point, put a detector
into alarm with a smoke canister.

8. Press t he CAL butt on on the inside of the Display Module. The display shows the reading that

Vortex believes the detector is sensing.

9. Use the – (HOLD) and + (STEP) buttons to adjust the Reading display to the correct reading:

• For an oxygen detector in free mobile air calibrate to a reading of 20.9% Vol.

• For other gas detectors, this should be the level for the applied calibration gas.

• For other 4-20mA devices this should be the level for the applied condition.

• For a fire detector, this should be the same reading as the ammeter in the circuit.

10. P ress ACCEPT/RESET. The display should read the calibration gas concentration (for a gas

detector) or the current in mA (for a fire detector).
If there is an E009 fault, it indicates that the mA output from the detector and the required

reading are too far apart to allow compensation. The detector calibration should be checked.

11. T he detector and Quad Channel Input Module are now configured and calibrated correctly.

• For a gas detector (other than oxygen) , r emove the calibration gas.

• For a fire detector, remove the ammeter and reconnect the fire loop.

12. P ress the RUN button on the front of the Display Module to release the Channel Test Mode.

13. Release any Inhibit Conditions by pressing the appro priate ZONE INHIBIT button.

14. If necessary select another channel and repeat this procedure until all channels are calibrated.

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VORTEX TECHNICAL

4 TECHNICAL INFORMATION: VORTEX

4.1 General

This section contains detailed technical information on the Vortex modules that you may need to refer
to during installation, configuration or maintenance of the Vortex system.

If you simply use Vortex for monitoring and responding to alarms, it is not necessary to read this
chapter. See chapter 6, Operation.

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VORTEX TECHNICAL

4.2 Node Controller Module

4.2.1 Functions of the Node Controller Module

This module controls the operation of Vortex, gathering the channel readings from the Quad Cha nnel
Input Module s . After correcting them for the zero adjustment and calibration it calculates the detector
levels and checks them against the alarm limits. Based on the corrected inputs, it drives the displays,
calculates voted outputs and drives the Relay Output Modules. It also interprets the power and battery
status.The Node Controller M odule contains the configuration of the system, which is stored in non­volatile ferroelectric RAM (FRAM).

The Node Controller Module logs event data and controls communications between modules and
communications with external devices using the M odbus protocol.

Figure 3 gives a general view of the Node Controller Module. Figure 17 (Appendix B) shows the
electrical connections to the Node Controller Module.

Figure 3: Node Controller Module

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4.2.2 Node Controller Module indicators, switches and connectors

Table 6: Node Controller Module indicators, switches and connectors

Letters refer to labels in Figure 3.

Ribbon cable socket

(A)

Provides connections to the Display Module

(where fitted) and the Power Monitoring Module.

RS485 ports (B): see
wiring diagram,
Figure 17

These ports are intended for use by personal

computers, programmable logic controllers and

distributed control systems to allow remote

monitoring of the system. It uses the Modbus

RTU Slave protocol running at 9600 baud

(address map available on application).

There are two connectors to simplify "daisy-

chaining" of multiple systems (up to 32 Vortex

systems) which are electrically connected

together. The Vortex at the end of a Modbus chain

can use this second connector to attach a

terminator (120 Ohm).

OK LED (C)

This LED flashes once per second to indicate

normal operation

Fault LEDs (D)

These three LEDs are normally off. They indicate

a code for system faults (see section 6.4.3). If

more than one fault is present, the codes are lit in

sequence.

TXD LED (E)

This LED is normally lit and flashes when the

Node Controller Module sends data via the RS485

or RS232 connections.

RXD LED (F)

This LED is normally lit and flashes when data is

received via the RS485 or RS232 connections.

Internal sound er Provides audible warning of alarms and faults,

confirmation of button presses, etc. It can be

disabled usi ng VortexPC.

Config socket
(RS232 connector)
(G)

This allows the connection of a personal computer

for the use of Vo rtexPC to co nfi gure the Vortex

system. When a connector is inserted, the RS485

link is halted. Crowcon recommends that this port

should not be used for routine monitoring.

Accept/Reset (H)

This switch has the same function as the

ACCEPT/RESET button on the Display Module

(see section 4.6).

System Lamp Test (I)

This switch has the same function as the LAMP

TEST button on the Display Module (see section

4.6).

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(J) see wiring
diagram Figure 17

Accept Reset – Terminals 7 and 8 can be
connected to cause an accept reset, see accept
reset above.

Lamp Test – Terminals 10 and 11 can be
connected to cause a system lamp test, see system
lamp test above.

Hot Swap facility - Terminals 9 and 12 can be
connected to allow other modules to be changed
without generating errors. See section 7.7.

4.2.3 Configuring the Node Controller Module

There are no user-configurable settings on the Node Controller Module. The Bus Selection switch is
always set to position 1.

The following system properties may be configured using Vor texPC. Chose the System Configuration
option on the Vortex menu.

Table 7: System Configuration Properties

Property Configuration

Syste m Name 16-character string used to identify the system
Enable Jump on

Alarm

On/Off. If this option is set, the first channel that
causes an alarm is automatically held on the
display. The Hold LED flashes. The display
remains held, even if other channels go into alarm,
until the RUN button is pressed.

Disable Local
Buttons

Y/N. If Y then CAL, ZERO, PEAK HOLD CAL,
CHANNEL TEST buttons have no effect

Disable Internal
Sounder

Y/N. If Y, the internal sounder is disabled.

Modbus address The Modbus address of the Vortex on the system.

Usually 1 unless the system is multidrop.

Number of Quad
Channel Input
Modules

1, 2 or 3

Number of Relay
Output Module s

0, 1, 2, 3 or 4

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4.3 The Bus Rail and elect rical connecti ons

The Vortex modules (apart from the Display Module and the power supply components) are mounted
on a bus PCB, which acts as a motherboard providing the ne cessary power and communications to the
modules, see Figure 4: Bus Rail Assembly Details. The bus PCB is inserted into a DIN Rail to create
the Bus Rail assembly.

The Node Controller Module, Quad Channel Input Modules and R elay Output Modul es have plugs
that slot into sockets on the bus PCB, and clips to lock them on to the DIN RailFigure 1 shows how the
modules are arranged on the Bus Rail assembly. For instructions for mounti ng the modules and
removing them from the rail, see section 7.8.

The Bus Rail accepts DC power from the Power Monitoring Module through a 2-way cable attached to
terminal JP1 on the bus. JP1 pin 1 is the positive co nnectio n.

Two Bus Rails can be connected together within the same cabinet, using the 10-way Bus
Interconnection Ribbon Cable Assembly. Using two Bus Rails allows the maximum number of
modules in one Vortex system to be fitted. The Vortex standard enclosure holds only one Bus Rail.

Figure 4: Bus Rail Assembly Details

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4.4 Quad Channel Input M odule

4.4.1 Functions of the Quad Channel Input Module

Each Quad Channel Input Module is used to power and monitor up to 4 detectors. For a list of
available Crowcon detectors, see Appendix D.

The first channel on each Quad Channel Input Module can be connected to a gas detector, or to a
maximum of 20 chained conventional loop-powered fire detectors and manual call points. The
remaining channels can be used only with 4-20mA.

Figure 5 gives a general view of the Quad Channel Input Mo dule. Figure 18 ( Appendix B) shows the
electrical connections between the Quad Channel Input Module and the detectors.

The detectors are connected to Inputs 1, 2, 3 and 4 labelled items A, B, C and D in Figure 5.

Figure 5: Quad Channel Input Module

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4.4.2 Configuring the Quad Channel Input Module

The Quad Channe l Input Module has switches for Detector Type, Selection and Module Selection, and
a link LK11. See Figure 6

Figure 6: Switches on Quad Channel Input Module

If the system is supplied with Crowcon detectors, the Quad Channel Input Modules are already
configured. I f t he system needs configuring, follow the instructions below.

Table 8: Quad Channel Input Module switch settings

Letters refer to labels in Figure 6.

LK 11 (E)

If the first channel of a module is a fire detector
connected to the Vortex system via a Zener Barrier, then
make the link LK11. I n all other cases, including when
the fire detectors are connected directly to the panel,
leave this link unmade.

Module Selection
Switch (F)

Determines the channel number for the module. The
physical order of the modules on the Bus Rail is not
important.

Position 0 - This module has channels 1-4
Position 1 - This module has channels 5-8 if two or three

modules are used
Position 2 - This module has channels 9-12 if three

modules are used

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Bus Selection Switch
(G)

Always set to position 1.

Detector Type Switch
input 1 to 4 (H, I, J
and K).

Selects the Detector Type.
Position 1 - 3-wire, 4-20mA source detector
Position 2 - 2-wire, 4-20mA

3-wire , 4-20mA sink detector
Position 3 - 2-wire, 0-5V
Position 4 - Fire (Channel 1 of module only)

Each detector channel is configured using Vor texPC. Choose the Inputs Configura tion option on the
Vortex menu. Select the appropriate channel to view its current configuration. See Table 9.

These properties apply to all channels regardless of their Detector Type (except Enabled, which is not
available for channels set as Not Configured detectors).

Table 9: Detector channel configurable properties

Property Configuration

Channels

Identity An 8-character string used to identify the channel
Detector Type Gas

Fire (Channel 1 of module only)
Not Configured if channel has no de t ector

Enabled On/Off. A detector must be enabled and configured to

participate in the system. If there are no participating detectors,
an E002 error is generated. A channel may be removed from the
system using this option even if it is configured, for example, a
faulty detector.

Gas detectors

Units Selects the units for Gas Detectors: %LEL, %VOL, ppm or no

units

Range For %LEL and %VOL the range can be 0 to 1, 2, 2.5, 5, 10, 20,

25, 50 or 100.
For ppm the range can be 0 to 1, 2, 2.5, 5, 10, 20, 25, 50, 100,

200, 250, 500, 1000, 2000, 2500, 5000, 10000. For the 10000
range, the maximum display is 9990.

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Property Configuration

Out of range values ­Interpret High and
Interpret Low.

Each option can be set to Info, Inhibit or Fault. They specify
how the system should respond to values that are under-range
and over-range, respectively. The low region is 1 to 3 mA and
the high region are 21.5 -24.5 mA.

Info

If Interpret High is set to Info, the display shows “Hi” and the
nominal gas level is treated as full scale.
If Interpret Low is set to Info, the display shows “Lo” and the
nominal gas level is treated as zero.
No fault is indicated. The Hi and Lo flags can be used for voting
in the relay logic.

Inhibit

If Interpret High is set to Inhibit, the display shows “In” and the
nominal gas level is treated as full scale.
If Interpret Low is set to Inhibit, the display shows “In” and the
nominal gas level is treated as zero.
The Inhibit si gnal for this channel can be used for voting in the
relay logic.

Fault

If either region is set to Fault then the under-range or over-range
fault is generated for the channel. This is intended to catch
short-circuit faults (High) and open-circuit faults (Low).

Alarm Levels 1, 2 and 3 The alarm thres holds must be set within the range for the

detector, using the units specified. The alarm level must be set to
either Rising or Falling. The resolution of the Alarm Levels is
the same as that of the Vortex system.

It is not necessary for Alarm 1 to be the lowest and Alarm 3 to
be the highest. Alarm 3 is not indicated and does not cause the
sounder to operate.

Zero Suppression On/Off. The default is On. When this option is selected, the

readings less than 3% of full scale are suppressed to zero.

Fire detectors

Current thresho l ds The current thresholds must be set within the range 0 to 60mA,

in the order
Open Circuit < Fire < Short Circuit

Reset Time Between 0 and 255 seconds. The time that the loop current is

removed to reset a latched fire detector on pressing
ACCEPT/RESET after a fire alarm.

Stabilisation Time Between 0 and 255 seconds. The time allowed for the fire

detector to stabilise after a reset before coming on line.

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4.5 Relay Output Module

4.5.1 Functions of the Relay Output Module

Optional Relay Output Modules may be fitted to the system and programmed to provide voted channel
and system events. These relays are controlled by the Node Controller Module.

Figure 7: Relay Output Module

Figure 7 gives a general view of a Relay Output Module.

Table 10: Features of the Relay Output M odule

Letters refer to the labels in Figure 7.

Relays 8 Single-Pole-Change-Over (SPCO) relays rated

at 6A 250Vac. These relays are configurable
separately for channel, alarm, voting, time delays
and relay type. Configuration is done through the
VortexPC software.

Relay Outputs (A to D
and H to K)

Connection to each relay 1 to 8. Normally open,
normally closed and common connections are
defined in appendix B Figure 19

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VORTEX TECHNICAL

Yellow LED for each
relay (E)

Indicates the relay status (LED on = energised,
LED off = de-energised). The relay coils are
continuously monitored in both energised and de­energised states.

Fault LED (F)

Indicates a fault condition. This is also shown on
the Node Controller Module LED and the Display
Module System Fault LED (if fitted).

This LED also indicates when a relay module is
unconfigured e.g. at power up the Le d in on until
the node controller has sent the relay
configuration to the relay module.

Relay Lamp Test
switch (G)

When pressed, checks that all the LEDs on the
Relay Output Mod ule are functioning.

4.5.2 Configuring the Relay Output Module

The physical order of the modules on the Bus Rail is not important, but, in order to reduce interference
with the input channels when switching heavy loads, we advise you to place Relay Output Modules at
the right-hand end of the DIN Rail.

Table 11: Relay Output Module switch settings

The letters refer to labels in Figure 8

Module Selection
Switch (L)

Determines whether the relays on the module are
configured as relays1-8, 9-16, 17-24 or 25-32..

Position 0 - This module has relays 1-8
Position 1 - This module has relays 9-16 if two,

three or four modules are used
Position 2 - This module has relays 17-24 if three

or four modules are used
Position 3 - This module has relays 25-32 if four

modules are used

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Figure 8: Relay Ouput Module Selection SwitchRelay Output Modules are configured in VortexPC,
using the Outputs Configuration option on the Vortex menu. Select the appropriate relay to view its
current configuration. The configurable properties of relays are listed in Table 12.

Table 12: Relay configurable properties

Property Configuration

Identity An 8-character string used to identify the Relay

Output.

Enabled On/Off. A relay must be enabled and configured to

participate.
Relays may be removed from the system by clearing

this check box. This is recommende d only when the
relay is temporarily removed, not as a long-term
solution.

Output Type Latching, Non-Latching, Latching Acceptable, Non-

Latching Acceptable, Pulsed, Reset Pulse or Not
Configured. See Table 13.

Any unused relays should be set to Not Configured.

On Delay Time The waiting period before the relay is activated.

Where applicable, 0 to 65535 seconds.

Off Delay Time The waiting period before the relay is deactivated,

except for Pulsed and Reset Pulsed, where it is the
period for which is relay is activated. Where
applicable, 0 to 65535 seconds.

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VORTEX TECHNICAL

Property Configuration

Energisation Either Normally Energised or Normally De-

EnergisedThe default is Normally De-Energised.

Table 13: Relay output types

Note that in the diagrams below, for all output types other than Pulsed and Reset Pulse, the On and Off
Delay times are presumed to be zero.

Latching:
The relay output is

trueACCEPT/RESE
T is pressed after the
alarm condition has
cleared.

You can program
the ON and OFF
delays.

Non-latching
The relay output is

true while the alarm
condition is true.
ACCEPT/RESET
has no effec t.

You can program
the ON and OFF
delays.

Risi ng Ala rm
setting

Gas level

ACCEPT/RESET

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Latching
Acceptable:

The relay output is
true until the
ACCEPT/RESET is
pressed, even if the
alarm condition has
not been c leared.

This option is
mainly used for
external sounders.
You can program
the ON delay.

Non-latching
Acceptable:

The relay output is
true until either the
alarm condition is
cleared or the
ACCEPT/RESET is
pressed.

You can program
ON and OFF delays,
ACCEPT/RESET
resets the relay
immediately even if
the alarm has not
been cleared .

Risi ng Ala rm
setting

Gas level

ACCEPT/RESET

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Pulsed: You can
program an ON
delay and an ON
time. The relay is
activated for the
period defined by
the OFF delay,
unless the alarm
clears during the ON
delay.

Reset puls e: Y ou
can program an ON
delay and an OFF
delay. The relay is
activated for the
period defined by
the OFF delay after
the ON delay has
expired.

Not Configured: The
relay output is
driven inactive. This
is the default.

4.5.3 Configuring the Relay Logic

The relay logic links detectors to relay outputs and is configured using the Rel ay Logic option in
VortexPC. Relay Logic cannot be configured for relays whose relay type is Not Configured, channels
with detector type as Not Configured can not be used. You should configure all the Quad Channel
Input Modules and Relay Output Modules as required before the Relay Logic.

On Delay Time

On Delay Time

On Time

On Delay Time

On Time

On Delay Time

On Time

Risi ng Ala rm
setting

Gas level

ACCEPT/RESET

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Table 14: Relay Logic configurable properties

Property Configuration

Detector link event (8
per detector)

Each detector link event can be one of seven
events: Alarm 1, Alarm 2, Alarm 3, Inhibit, Fault,
High Information, Low Information (when
configured as suc h for the High and Lo w regions
of a 4-20mA detector)

System links (8 for
system fault and 8 for
system sounder)

The system fault event and system sounder event
can be linked to a relay

Relay Vote count The Vote Count for the relay, this is the number

of the specified events (detector events and
system events) that must occur to trigger the relay.
For example, if three detector events have been
selected for the relay, a vote count of 1 means that
any of the events will trigger the relay.

Fire detectors will generate Alarms 1, 2, and 3 on a fire event.

In Vortex PC, for each relay, select the detector(s) and the corresponding events, or system properties
to trigger the relay.

4.6 The Display Module

4.6.1 Functions of the Display Module

Vortex, Vortex Rack and Vortex Panel include a Display Module that in normal operation provides a
display of detector input and reports the current status of the system. It also provides local user co ntrol
of the system through a set of push-buttons, seven at the back and five on the front. See Figure 9 and
Figure 10.

Figure 9: Back of Display Module

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VORTEX TECHNICAL

Figure 10: Front of Display Module

Display Module shown is for Vortex ( in
its standard enclosure), Vortex Rack and

Vortex panel have only minor differences

in outline.

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VORTEX TECHNICAL

In Vortex and Vortex Panel the Display Module is mounted on the enclosure door. In Vortex Rack, t he
Display Module is mounted on a 19"rack panel. For Vortex DIN there is no Display Module and
monitoring can be done using the RS485 port on the Node Controller Module (see section 4.2)

The Display Module displays the status of each channel. If any alarm or fault condition is detected, the
relevant LED light s up on the Displa y Module. Depending on the configuration of the system, the
internal sounder on the Node Controller Module emits a sound, and anyassigned relays operate.

Details of the displays module features can be found below.The type of input monitored on each
channel may be indicated on the front of the Display Module by a label above the LEDs for that
channel.

4.6.2 Display Module Features

Table 15: Display module features

The letters in parentheses refer to Figure 9 and Figure 10.

Feature Description

Ribbon Cable
connector (A)

This connector accepts the ribbon cable to connect the display to
the node controller module.

System Fault.LED
(B)

Yellow LED indicates a detected system fault. The specific fault is
indicated on the Node Controller module LEDs; see section 6.4.3.

Power Healthy LED
(C)

This LED provides information about the status of the various
power systems. For the code, see section 6.4.2.

Zone Inhibit LEDs
(D, E, and J)

Yellow LED for each zone (set of channels on a Quad Channel
Input Module). Indicates that the zone, or a channel in the zone, is
currently inhibited.

Hold LED (F)

The green LED when continuously illuminated indicates that the
HOLD button has been used to hol d the current c hannel.

When this LED flashes, it indicates "Jump on Alarm". The Channel
Reading now shows the channel (or the first of more than one
channel) that has gone into alarm.

Channel Test LED
(G)

The yellow LED when flashing indicates that the system is in
Channel Test mode (section 7.4).

Units Indication
LEDs (H)

Indicates what the units of the currently displayed reading are.

Reading (I)

The readi ng on the channel currently indicated by the Channel
display. The number is shown in red on a 7-segment display. This
should be read in conjunction with the units indica tion. For the use
of this display in Channel Test mode, see section 7.4.

Channel Number (K)

A green 7-segment display that normally displays the number of the
currently-displayed channel (The other channels are continuously
monitored regardless of this display.) For the use of this display in
Channel Test mode, see section 7.4.

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Feature Description

Channel Alarm 1 and
Alarm 2 LEDs (L
and M)

Red LEDs for each channel. Illuminated when the alarm level is
reached on the channel. When the alarm is first raised, the LED
flashes. After the ACCEPT/RE SET button is pre s sed, the LED
goes out if the alarm condition has been cleared. If the alarm
condition still exists, it displays continuously.

Channel Fault LEDs
(N)

Yellow LED for each channel. Illuminated when a fault is detected
on the channel. When the fault is first raised, the LED flashes.
After the ACCEPT/RESET button is pressed, the LED goes out if
the fault has been cleared. If the fault still exists, it displays
continuously.

HOLD (-) Button On front of module. Press to hold the display on the current

channel. Also used to decrease the Reading display in Channel Test

mode (section 7.4).

STEP (+) Button

On front of module. Press to step the display to the next channel .
Operates only when HOLD has been selected. Also used to
increase the Reading display in Channel Test mode (section 7.4).

RUN Button O n front of module. Press either t o restart cycling through the

channels after HOLD has been selected, or to end Channel Test
mode.

ACCEPT/
RESET Button

On front of module. Press to info rm Vortex that you have noted
that an alarm or fault condition has occurred. Pressing this button
silences the internal sounder. If the alarm condition has cleared, it
clears any red or yellow LEDs in the channel status display.

LAMP TEST Button On front of module. Press to test all the LEDs on the Display

Module and Node Controller Module. See section 7.5.

CHANNEL TEST
Button

On rear of module. After the HOLD button has been used to select
a channel, use the Channel Test button to display alarm levels
(section 7.4) or for zero adjustment and calibration (sections 3.8
and 7.3). Thi s button can be disabled using V ortexPC.

PEAK HOLD CAL
Button

On rear of module. Used for the Peak Hold Calibration (section

7.3). Can be di sabled using VortexPC.

CAL Button On rear of module. Used for the Calibration (section 3.8 and

section 7.3). Can be disabled using VortexPC.

ZERO Button On rear of module. Used for the Zero Adjustment (sections 3.8 and

7.3). Can be di sabled using VortexPC.

ZONE INHIBIT
Buttons

On rear of module, one button for each zone. Used to prevent the
correspo nding output rel ays from being activate d during testing or
calibration (sections 3.8, 7.3 and 7.4). VortexPC can be used to
inhibit individual channels.

Note: Even in the inhibit condition, the alarm LEDs on the display
module are triggered if alarms occur.

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VORTEX TECHNICAL

4.7 Power Monitoring Module

4.7.1 Functions of the Power Monitoring Module

The Power Monitoring Mod ule is shown in Figure 11 , page 35. The Power Monitoring Modul e is a
standard part of the Vortex system.

Note: for multiple Vortex Rack, Vortex panel and Vortex DIN systems supplied by Crowcon, the
Power Monitoring Module may have been replaced by a single Power Management System, which
meets the EMC and Low Voltage Directive requirements.

If the backup batteries are fitted and the main ac power supply is lost, the system automatically
switches over to the standby battery operation. If loss of power continues, the battery is disconnected
from the system to prevent it from being over-discharged and permanently damaged.

The main features of the Power Monitoring Module are listed in Table 16.

Figure 11: Power Monitoring Module

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VORTEX TECHNICAL

Table 16: Features of the Power Monitoring Module

Letters refer to labels in Figure 11, page 35.

Mains (connector)

(A)

Input from mains supply, when the optional P ower

Supply Unit is fitted. This is rated at 29.5V, 150W,

with input at 110-120V or 220 to 230Vac

(switched), 50-60Hz.

24Vdc In (connector)

(B)

If a 24Vdc external power source is specified, then

the Mains Power Supply Unit is not fitted. A 20-

30Vdc supply fused at 5A must be provided. The

Power Monitoring Module includes 24V filtering.

You must ensure that the 24Vdc is suitable for use

with Vortex.

If internal batteries are expected to be charged from

an external DC supply then the supply shoul d have

a minimum voltage of 29.0V

Battery (connector)

(C)

Connection to backup batteries. See section 4.7.4.

5A F (two fuses) (D)

The lower fuse is connected to the batteries (if

fitted) and the upper fuse is connected to the dc

output of the mains power supply and the 24V dc

input (item B).

Green LED (E)

This indicates that there is DC input to the power

monitor board, either from the mains power supply

unit or from the DC input (item B)

LK1 and LK2 (li nks)

(F)

LK1 must be fitted if the system does not have

standby batteries fitted. If neither the link nor the

batteries are fitted then a Power Status Fault will

always be present.

If the system is to be powered up without an

external power supply, LK2 can be shorted to

enable the system to power up from fully-charged

batteries.

Ribbon cable

connector (G)

This connects to the Node Controller Mod ule

(section 4.2) and the Display Module (if fitted).

TP1 and TP2 Earth

links (H)

When Vortex is s upplied in the standard encl osure,

it is supplied with the enclosure isolated from 0V

and the earth link fitted to TP2. This link is required

for systems where the 0V is isolated from the

enclosure. If the system requires the 0V to be

connected to the enclosure, move the link wire to

TP1. See Appendix F for further details of earthing.

DC Output

This is the output from the power monitor module

for connecting to the bus assembly see section 4.3

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VORTEX TECHNICAL

DC/Mains Fail relay

output (J leftmost set
of 3 connections)

This indicates the status of the dc input to the Power

Monitoring Module. This input comes either from a
mains Power Supply Unit or from the 24Vdc In
terminals. The relay is normally energised and de­energises when the dc input is absent.

Battery (Disconnect)

relay output (J centre
set of 3 connections)

Batteries have to be protected against deep

discharge, as it causes permanent damage that
eventually shortens battery life. If the battery
terminal voltage falls below about 20V, this relay
trips out. It disconnects the battery power to the rest
of the Vortex system. It is normally energised until
the voltage goes below the threshold, and does not
reconnect until the battery terminal voltage is
recharged to about 26V.

Low Battery relay
output (J rightmost

set of 3 connections)

This relay indicates when the battery terminal
voltage falls below about 22V, which shows that the
battery is approaching the exhaustion of its charge
capacity. It is normally energised until the voltage
goes below the threshold, and does not reconnect
until the battery terminal voltage is recharged to
about 26V.

24Vdc Out
(connectors) (K)

There are four 500mA electronically-fused outputs
that can be used to power auxiliary equipment and
can be used in conjunction with the r elay modules
to drive audible/visual alarms. These outputs are
19-29V dependent on the dc input, with a 0.6-0.7V
drop. Typically, this is 28.5V.

4.7.2 Removing the 5-Way Cable Assembly

With the Power Monitor Module isolated from the system remove the 4 screws from each corner of the
Power Monitor Module cover and remove the cover from the PCB. Disconnect the 5 way cable header
from PCB. Re-assemble the Power Monitor Module PCB into the cover.

4.7.3 Mounting the Power Monitoring Module on a DIN Rail

The Power Mo nitoring Modul e can be mounted on a DIN Rail using the adapter plate and clips
provided, this is not applicable in Vorte x. Screw the adapter plate to the clips in the required
orientation. Then screw the Power Monitoring Module to the adapter plate, see Figure 12. Push the
clips on to the DIN Rail until they click home.

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VORTEX TECHNICAL

Figure 12: Alternative mountings for the Power Monitoring Module

4.7.4 Backup batteries

The Power Monitoring Module is capab le of charging and monitoring two 12V, 2Ah at 0.25A, sealed
lead-acid batteries connected in series to provide 24V dc. If the main ac power supply is lost, the
system auto matically switches over to the standby battery operation, this is indicated on the Power
Status LED on the Display Module. If loss of power continues, the battery is disconnected from the
system to prevent it from being over-discharged and permanently damaged.

In the Vortex standard enclosure these batteries are mounted behind the Po wer Monitoring Module.
There is a 10A in-line fuse between the two batteries behind the Power Monitoring Module. For
instructions on changing these batteries, see section 7.9.

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VORTEX TECHNICAL

Larger batteries or external backup power supply systems may be supplied and fitted according to
requirements, details of these are beyond the scope of this manual. See the Specification Sheet
supplied with the system for more information.

NOTE Where external DC supplies are used, they should be connected via the DC input connection
NOT the battery input.

4.7.5 Power Failure

Under total power failure all system configuration data is protected by non-volatile Ferroelectric RAM
(FRAM) in the Node Controller Module. Logged data is not protected and is lost.

The power status is displayed by the Power Healthy LED on the Display Module, where fitted.

Detectors have a warm-up time when power is initially connected or reconnected after a power loss.
During this period, detector signals may not be reliable.

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FIELD DEVICES

5 TECHNICAL INFORMATION: FIELD DEVICES

5.1 General

This chapter contains detailed technical information on the use of field devices (detectors and audible
and visible alarms) with Vortex. You may need to refer to this during installation, configuration or
maintenance of the Vortex system.

If you simply use Vortex for monitoring and responding to alarms, it is not necessary to read this
chapter. See chapter 6, Operation.

5.2 Gas Detectors

5.2.1 Gas detector location

There are no rules that dictate the siting and location of detectors. However, considerable guidance is
available from:

• BS EN 50073:1999, Guide for Selection, Use and Maintenance of Apparatus for the Detection

and Measurement of Combustible Gases or Oxygen.

Similar codes of practice of other countries may be used where applicable. In addition, certain
regulatory bodies publish specifications giving minimum gas detection requirements for specific
applications.

The detector should be mounted where the gas is most likely to be present. The following points
should be noted when locating gas detectors:

• To detect gases that are lighter than air, for example, methane, detectors should be mounted at

high level. Crowcon recommends the use of a Collector Cone.

• To detect gases that are heavier than air, for example, butane, detectors should be mounted at low

level. Contact Crowcon for details.

• To detect gases with similar weight to air, for example, hydrogen sulphide, mount the detector at

normal breathing height.

• Mounting of oxygen detectors requires knowledge of the gas displacing the oxygen. For example,

carbon dioxide is heavier than air and displaces oxygen at a low height. Under these
circumstances oxygen detectors should be placed near ground level.

• When locating detectors, consider the possible damage caused by natural events such as rain or

flooding. For detectors mounted outdoors, Crowcon recommends the use of weatherproof caps or
spray deflectors.

• Consider ease of access for functional testing and servicing.

• Consider how the escaping gas may behave due to natural or forced air currents. Mount detectors

in ventilation ducts if appropriate.

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FIELD DEVICES

• Consider the process conditions. Gases that are normally heavier than air, but are released from a

process line that is at a high temperature and/or under pressure, may rise rather than fall.

The placement of the sensors should be decided following the advice of experts with specialist
knowledge of gas dispersion, experts with knowledge of the process plant system and equipment
involved, and safety and engineeri ng personnel. The agreement reached on the locations of sensors
should be recorded. Crowcon is pleased to assist in the selection and siting of gas detectors.

5.3 Fire detectors

Only one fire loop may be fitted to each Quad Channel Input Module, and this can only be c onnected
to the first input channel. Up to 20 detectors, for example, Apollo Series 60, may be used on the same
loop at any time. The fire loop can also support other switched devices such as manual call points.
Devices on the loop may be mixed provided electrical characteristics are compatible and fire
regulations allow.

All fire loops require a 1.8Kohm end-of-line resistor to be fitted (R

t

in Figure 13). Simple switch

devices such as manual call points require a 470ohm series resistor (R

m

.in Figure 13).

A fire detector circuit can be represented by an equivalent circuit of a switch operating in series with a
sensor resistor (R

s

in Figure 13).

Figure 13: Representation of a fire detection circuit

With no detectors in alarm (all switches open) a small current flows in the circuit through the end-of­line resistor (R

t

). If a short circuit or open circuit cable fault occurs, the current in the loop increases or

decreases. The Quad Channel Input Module detects this and a fault alarm is raised.

R

m

Rt Rs

To quad
channel
module
fire
sensor
input

Equivalent circuit of fi re

sensor

Manual call point

End of line

resistor

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42 Issue 7 December 2009

FIELD DEVICES

If a fire is detected (either the fire detector switch closes or the call point is activated), the current
flowing in the loop changes and the Quad Channel Input Module detects this and a fire alarm is raised.

Figure 18 in Appendix B shows the electrical connections to be made to the Quad Channel Input
Module. For essential information about earthing, see Appendix F.

5.3.1 Fire detector location

It is beyond the scope of this manual to describe the rules and regulations governing the installation of
fire detecti on equipment. Assistance and guidance should be sort from the governing body in the
country concerned before fire detection equipment is installed.

Further advice is available from Crowcon if required.

5.4 Connections for audible/visual alarms

Vortex is able to drive audible and visual alarms via any relay outputs. Any 20 – 29.5V dc field device
(to a maximum of 500mA) may be powered by the dedicated dc outputs on the Power Monitoring
Module.

For essential information about earthing, see Appendix F. For further assistance, please contact
Crowcon.

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OPERATION

6 OPERATION

6.1 General

This section describes the use of the Vortex system for monitoring, and the display of faults and
alarms.

The system status can b e monitored through the Display Module or through an external system using
the digital communications ports, for example, a Distributed Control System (DCS). The information
here is mostly concerned with the Vortex Display Module.

The operation of the sounder and relays depends on the configuration of the relay logic (section 4.5.3).
The details of systems configured by Crowcon are given in the Specification Sheet. For full details of
the displays and controls on the Display Module, see section 4.6.

6.2 Monitoring with the Dis play Module

In normal operation all the LEDs in the channel status display are OFF. The system cycles through the
channels, disp l aying each channel reading in turn for three seconds. The channel number is displayed
in green, and the reading for the channel is displayed in red. The units of concentration are displayed
by the illuminated green LED on the right of the Reading display.

For a gas detector, the concentration is displayed as %LEL (percentage of Lower Explosive Limit),
%VOL (percentage by volume) or PPM (par t s per million). These units can b e configured in
VortexPC.

NOTE: Detection occurs on all channels at all times. The display provides a view of the reading on
a particular channel. The channel is not affected by this operation.

For a fire detector, a row of dashes appears on the Reading display when that channel is displayed and
there is no alert condition. The word FIRE is illuminated on the green LED at the right of the Reading
display.

To stop the cycling through the channels, and hold the reading of a particular channel, press the HOLD
button when the channel is displayed. While the channel is held, the green LED next to the HOLD
button is lit.

While the Display Reading is held, you can step to another channel by pressing the ST EP button until
the desired channel is displayed.

To return to the cycling display, press the RUN button. The Hold LED goes out.

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OPERATION

6.3 Alarm conditions and faults

6.3.1 Display Module

If any channel detects an Alarm 1 or Alarm 2 condition, the corresponding LED for that channel
flashes on the Display Module. Alarm 3 does not activate LEDs.

At the same time, the Channel display displays the channel reading for the affected channel. (This is
called "Jump on Alarm" and can be disabled: see Appendix E.) The LED next to the Hold button
flashes to indicate that the display is held on this channel. If further channels enter alarm, their
associated red LEDs flash in the channel status display, but the Channel Display remains on the
channel that first entered alarm. In this way, it is possible to determine which channel entered alarm
first. This may help to locate the source of the problem.

If the alarm has been triggered by a fire detector, the Reading display shows the word "FIRE".

If any channel detects a fault condition, the yellow fault LED for that channel flashes on the Display
Module and the Channel Reading shows the detected fault code, (section 6.4.1)

To confirm that you have seen the alarm or fault, press the ACCEPT/RESET button. If the alarm
condition has already been cleared, the LED goes out. If the alarm condition still exists, the LED
display changes from a flashing to a steady state. When the alarm has been cleared, press the
ACCEPT/RESET button to clear the LED.

6.3.2 Internal sounder and relays

Alarm levels 1 and 2 and faults will activate the internal sounder and may activate relays depending on
the relay logic configuration (section 4.5.3). Alarm 3 does not activate the sounder, but may be
configured to operate relays.

To silence the audible alarm, press the ACCEPT/RESET button. The alarm relays may be reset,
depending on t he relay logic configuration.

On fire channels, pressing the ACCEPT/RESET button removes the fire loop current to try to reset
latched fire/smoke detectors.

The internal sounder will also sound at a much lower rate during fire detector reset and stabilisation
time (see section 4.2) following use of the ACCEPT/RESET button.

6.4 Fault Messages

6.4.1 Channel Faults

Vortex is able to detect and display faults relating to common problems in both gas and fire detectors.
On the Display Module, these faults are displayed as codes in the Reading display.

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OPERATION

Table 17: List of channel faults

Code Fault description

E T his is disp la yed when a fault is clearing. It is replaced b y

the normal reading in a few seconds.

E001 Channel Access fault. A problem with the communications

between the Node Controller Module and Quad Channel
Input Module has occurred.

Check that all Quad Channel Input Modules are configured
with the correct addresses.

E002 All inputs disabled. Restore inputs in accordance with the

system specification before leaving the system in normal
operation.

E006 Under Range fault (Op en circuit). The current has fallen

below 1mA for gas detector inputs, and less than the open
circuit level for fire inputs.

Check for open-circuit or wiring faults that cause
abnormally low loop currents in detector wiring.

E007 Over Range signal (Shor t c ircuit). The current is greater

than 23.5mA for gas detector inputs and greater than the
programmed short circuit value for fire inputs.

Check for short-circuit o r wiring faults that cause
abnormally high loop currents in detector wiring.

E008 Zero fault. This occurs only in Channel Test mode (section

7.4). The input is too far from 4mA to allow compensation.
The input must be between 3.5 and 4.5mA. Check the
detector output with a meter.

E009 Scale fault. This occurs only in Channel Test mode

(section 7.4).The input is too far from the expected value
to allow scale compensation. Check the detector output
with a meter. Check that the detector has been calibrated
correctly and the correct range has been configured.

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OPERATION

6.4.2 Power Status

There is a Power Healthy LED on the Display Module, which provides information about the status of
the various power systems.

Table 18: List of Power Status LED codes

Code Fault description

Solid green Mains power supply is good and the battery level is

good.

Fast flashing
green

Mains power supply is good but the battery level is low.

Solid yellow Mains power supply has failed but the battery level is

good.

Fast flashing
yellow

Battery level is low and mains power supply is
disconnected.

Slow flashing
yellow

Battery is discharged, disconnected, faulty or
disconnected for deep discharge protection.

Unlit Complete power failure or the Power Monitoring Module

cannot be accessed on the bus.

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OPERATION

6.4.3 System Faults.

There are several system faults that are indicated by the System Fault LED on the Display Module.
The Fault LEDs on the Node Controller Module indicate what system error has occurred using a
binary code.

Table 19: List of Node Controller Module LED fault codes

● = lit, ○ = unlit

Code Fault description

○
○
○

No fault

○

○

●

1 Battery fault.

The battery is seriously discharged or disconnected. Reconnect or
replace the battery. If no battery is fitted, ensure link LK1, on the
power monitor module, is made.

○

●
○

2 FRAM data integrity fault

Node Controller Module problem. Contact Crowcon.

○

●

●

3 Internal bus fault.

Problem with the Ribbon Cable between the Display Module,
Node Controller and the Power Monitoring M odule. Check the
Ribbon Cable is connected and intact. If persists contact Crowcon.

●

○
○

4 Display access fault.

Check the connection between the Node Controller Module and
the Display Module. If persists contact Crowcon.

●

○

●

5 Power Monitoring Module access fault.

Check the connection between the Node Controller Module and
the Power Monit oring Module. If persists contact Crowcon.

●

●
○

6 External bus fault.

Ensure all modules are located on the Bus Rail correctly. If the
fault persists contact Crowcon.

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OPERATION

Code Fault description

●

●

●

7 Relay Module fault.

Relay Coil failure or access fault. Check all Relay Module address
switches are correct. If persists contact Crowcon.

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MAINTENANCE

7 MAINTENANCE

7.1 Detector Functional Te s t ing

Crowcon recommends that you check detectors routinely to ensure correct calibration and operation.

For gas detectors, heads require recalibration at least every 6 months. Fire detectors should be tested
every 3 to 6 months. Site procedures may require more frequent testing.

For detailed instructions on the routine functional testing of detectors, please refer to the relevant
Installation, Operating and Maintenance Instructions provided with each detector.

7.2 Inhibiting input

During calibration (sections 3.8 and 7.3) or Channel Test (section 7.4), it is often necessary to inhibit
the inputs so that relays are not tripped.

Using the Display Module, a zone (a group of four channels on a Quad Channel Inp ut Module) can be
inhibited by pressing the appropriate ZONE INHIBIT button on the back of the Display Module. To
return the zone to normal operation, press the ZONE INHIBIT button again

Using VortexP C, you can inhibit ind i vidual channels. S ee VortexPC Help.

When a zone or channel is inhibited, any alarm or fault condition detected on that channel is not
transmitted to the relays. The Zone Inhibit LED is lit if the zone or a ny channel within the zone is
inhibited.

7.3 Re-calibrati on of V ortex

Vortex does not normally require re-calibration. Calibration should be done whenever the following
occurs:-

• a detector is changed

• a new detector is added

• replacement of certain modules see section 7.7.

In other cases, you may wish to carry out re-calibration as a confidence check.

The instructions below are for the Display Module. If you are using VortexPC, the software has Zero
and Calibration Wizards to enable you to carry out the calibration easily.

To calibrate Vortex with a new detector, see section 3.8. A simpler procedure can be used for re­calibration, or when a detector has been replaced. The PEAK HOLD CAL function provides a one­person CAL facility. Vortex has a memory location for each of its twelve input channels. These
memories store the highest value seen on each channel.

The Zero Adjustment should always be done before calibration.

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MAINTENANCE

1. For a new detector, calibrate the detector first. For the calibration procedure, please refer to the

relevant Installation, Operating and Maintenance Instructions provided with the detector.

2. Inhibit the channel by pressing the appropriate ZONE INHIBIT button on the back of the Display

Module.
The calibration can be carried out without inhibiting the channel, but associated relays and

audible and visual alarms may be triggered.

3. Ensure that the associated detector is reading zero level (4mA for a gas detector):

• For an oxygen detector, the sensor must be disconnected from the current amplifier at the

detector head.

• For other gas detectors, the detector should be in free mobile air.

• For a fire detector, the fire loop current connector must be disconnected at the Quad Channel

Input Module .

4. Using the HOLD and STEP buttons, select the channel to adjust.

5. Once the display is held on the appropriate channel press the CHANNEL TEST button on the

inside of the Display Module. The display should show GL for a gas detector or FL for a fire
detector, and the detector level reading (this should be approximately zero).

6. Press t he ZE RO button. The display should read 0.

If there is an E008 fault, it indicates that the incoming signal is too far from the nominal zero
level to allow compensation. Check that the detector is wired correctly and the Quad Channel
Input Module switch setting is correct.

7. Provided that zero adjustment was successful, reconnect the sensor (for oxygen detectors only) or

connector (for fire detectors only).

8. With Vortex not in Channel Test, press PEAK HOLD CAL to clear the memory.

9. For an oxygen detector, expose the detector to free mobile air. Ensure that the display is showing

GL and the current gas level reading. Allow this reading to stabilise.
For other gas detectors, apply calibration gas to the detector (normally half scale, but must be

greater than 20% of full scale). Allow enough time for the detector to settle (typically two
minutes). Ensure that the display is showing GL and the current gas level reading. Allow this
reading to stabilise.

For a fire detector, connect an ammeter into the channel circuit. Ensure that the display is
showing FL and operate a manual call point. If the circuit has no manual call point, put a detector
into alarm with a smoke canister.

10. Pre ss the PEAK HOLD CAL button.

11. Use the – (HOLD) and + (STEP) buttons to adjust the Reading display to the correct reading:

• For an oxygen detector in free mobile air calibrate to a reading of 20.9% Vol.

• For other gas detectors, this should be the level for the applied calibration gas.

• For other 4-20mA devices this should be the level for the applied condition.

• For a fire detector, this should be the same reading as the ammeter in the circuit.

12. Press ACCEPT/RESET. The display should read the calibration gas concentration (for a gas

detector)or the current in mA (for a fire detector).

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MAINTENANCE

If there is an E009 fault, it indicates that the mA output from the detector and the required
reading are too far apart to allow compensation. The detector calibration should be checked.

13. T he detector and Quad Channel Input Module are now configured and calibrated correctly.

• For a gas detector (other than oxygen) , r emove the calibration gas.

• For a fire detector, remove the ammeter and reconnect the fire loop.

14. P ress the RUN button on the front of the Display Module to release the Channel Test Mode.

15. Release any Inhibit Conditions by pressing the appropriate ZONE INHIBIT button.

16. If necessary select another channel and repeat the procedure until all channels requiring

calibration are complete.

7.4 Channel Test Mode

Channel Test mode is used to view and modify the alarm level settings for a channel, using the Display
Module, and to test the configuration of relay outputs.

Channel Test mode is also needed in order to carry out calibration and re-calibration operations (see
sections 3.8 and 7.3).

7.4.1 Channel Test Mode procedure

During Channel Te s t mode, all gas detection and relay functions are unaffected, except for the selected
channel. The internal sounder is not used to sound alarms during Channel Test mode. The detector
level readings transmitted over the MODBUS communications link are effected in this mode, contact
Crowcon for more details.

If you wish to test simple relay configurations, you can use this procedure with the zones not inhibited.
Note that the fault condition step in Channel Test mode does not cause any relays to be triggered.

To view the channel s ettings:

1. Select the required channel with the HOLD and STEP buttons.

2. Press the ZONE INHIBIT button for each of the channels you intend to test, in order to avoid

operation of the relays, unless you wish to check the relay output configuration.

3. Press the Channel Test button on the back of the Display Module.

If the channel is a gas detector (or any other 4-20mA input device), the Channel display shows
the code GL (for Gas Level), and the Channel Test LED flashes. The gas reading is displayed in
the Reading display.

If the channel is a fire detector, the Channel display shows the code FL (for Fire Level), and the
Channel Test LED flashes. The loop current is displayed in the Reading display in milliamps.

The readings are displayed without zero suppression.

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4. Press the Channel Test button repeatedly to display the levels in the order shown in Table 20. If

the channel is not inhibited, the relays are tripped as the sequence passes through them. This can
be used to test that the relays and their devices are working correctly.

Note that the individual alarms are operated independently, depending on their thresholds and
whether they are set as rising or falling, so more than one alarm may be present at one time.

Table 20: Channel test display sequences

Gas detector channel

Channel

display

State Reading display

GL Starting point. Alarm status according to

input signal level.

Gas Level

A1 Alarm level 1 active Alarm Level 1
A2 Alarm level 2 active Alarm Level 2
A3 Alarm level 3 active Alarm Level 3
FS All rising alarms active Full Scale
A3 Alarm level 1 active Alarm Level 3
A2 Alarm level 2 active Alarm Level 2
A1 Alarm level 3 active Alarm Level 1
0 All falling alarms active Zero
F (Fault) Fault LED is on solidly. A zero level is

forced so that falling alarms are active.
This test does not trigger the fault relay.

E (possibly with a fault number)

GL Back to starting point Gas Level

Fire detector channel

Channel

display

State Reading display

FL Starting point. Alarm status according to

input signal level.

Fire Level

OC No alarms active. Fault active. Open Circuit
AL Alarm levels 1,2 and 3 active. No fault

active.

Alarm Level

SC Alarm levels 1, 2 and 3 active and fault

active.

Short Circuit

FS Alarm levels 1, 2 and 3 active and fault

active.

Full Scale

0 No alarms active. Fault active. Zero

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MAINTENANCE

Fire detector channel

FL Back to starting point Fire Level

5. Press t he RUN button to end the Channel Test at any point.

6. Cancel any zone inhibits by pressing the appropriate ZONE INHIBIT buttons.

7.4.2 Setting alarm levels

To change an alarm level:

1. Press the appropriate ZONE INHIBIT button for each of the channels you intend to test.

2. Select the required channel with the HOLD and STEP buttons.

3. Use the Channel Test button to display the appropriate level (A1, A2 or A3). (See section 7.4.1.)

4. Press the + button ( S TEP) to increase the value or the – button (HOLD) to decr ease it. Repeat

until the required value is displayed.

5. To stor e the new value in the Vortex memory, press the ACCEPT/RESET button. The internal

sounder beeps.
If you do not do this, the change is lost on the next pr ess of the Channel Test button.

6. To return to normal operation, press the RUN button on the front panel.

7. Cancel any zone inhibits by pressing the appropriate ZONE INHIBIT buttons.

NOTE, for fire detectors a similar method is used to adjust the short circuit, ala r m and op e n cir c uit
levels when the channel display is reading SC, AL and OC respectively.

7.5 Lamp test

The lamp test is used to check that all LEDs and the sounder are working. It also tests the confidence
LED and the fault LEDs on the Node Controller Module. This test can be carried out at any time
except in Channel Test mode. It does not affect the gas or fire detection.

To carry out the test use one of these methods:

• Press the LAMP TEST button on the Display Module.

• Operate the Lamp Test switch on the Node Controller Module.

• Connect the terminals 10 and 11 on the Node Controller Module.

The test operates only while the button, switch or connection is held.

Maintenance Vortex Manual

54 Issue 7 December 2009

MAINTENANCE

7.6 Event logging

The Node Controller Module logs events (300 maximum) which can be accessed through the digital
communication links. Each event is recorded with a time stamp. Table 21 lists data recorded in the
event log.

Table 21: Data recorded in the Event Log

Event Data recorded

Entry and exit from alarm states Each channel ID and alarm level
Fire detector coming online after a

reset and stabilisation period

Channel ID

Accept/Reset action
Channel test actions Action performed and channel ID.
Clearing of the Peak Hold Cal

memories
Inhibit action Channel ID and whether inhibit

condition set or cleared

Fault (each fault is recorded as fault
occurred and fault fixed)

Under-range, Over-range, Channel
communications access together with
relevant channel ID

No detector enabled fault

System faults (each fault is recorded
as fault occurred and fault fixed)

Battery fault, FRAM data, Ribbon
Cable bus, Display Access, Power
Monitoring Module, Module Access,
Bus PCB, Rel ay Output Module

Relay drive output Relay ID and whether the relay is

driven or not driven. This is the result
evaluated by the relay logic and not
necessarily the relay contact state as
this is dependent on the relay
configuration.

Communications actions. Config cable inserted, Config cable

removed.
Zero and cal operation performed over

serial communications with associated

channel ID.
FRAM update The internal stored configuration
Power supply event Change in the power supply occurred

and changed to OK / Mains Fail,

Battery Low / Mains OK, Battery

Disconnect / Mains OK, Battery Low
Service event Date and time that the event log was

cleared

Vortex Manual Maintenance

Issue 7 December 2009 55

MAINTENANCE

7.7 Module replacement

Vortex is a modular system, and modules can be replaced as necessary. The electronic boards
contained within the modules are not serviceable. If replacement modules are used, ensure that any
configuration switche s are set correctly before they are inserted into the system (see chapter 4). The
error E001 may occur if the module address switches are incorrectly set.

See Appendix C for the list of available spare parts.

Modules can be changed without creating an error state if the Hot Swap facility of the Node Controller
Module is used.

1. To use Hot Swap, connect node controller terminal 9 to terminal 12 while in run mode (not held

on a channel). See Figure 17 in Appendix B.
During Hot Swap, the sounder sounds repeatedly and the Reading display shows the word

"Stop" . The system stops monitoring, but rel ays remain unchanged.

2. Change the required modules. For instructions on mounting and dismounting the modules, see

section 7.8.

3. Remove the “hot swap” connection. The previous state of the Vortex system is restored and the

sounder stops.

Changing certain modules can give rise to the need to recalibrate as defined below;

Replacement of:-

Calibration Required

Node Controller Module

All channels

Quad Channel Inp ut Module

Channels connected to replaced card

7.8 Mounting and dismount ing DIN Rail modules

Modules plug into the sockets on the DIN Rail, and are held on by the plastic clips. See Figure 14.

1. To mount a module, position the top a nd bottom black clips in their positions closest to the p lug

at the back of the module. Push the module so that the plug engages with the socket on the DIN
Rail, then push firmly until the clips engage with the DIN Rail.

2. To dismount a module, lift the top clip and lower the bottom clip using a screwdriver, as shown

in Figure 14. Pull the module off the DIN Rail.

Maintenance Vortex Manual

56 Issue 7 December 2009

MAINTENANCE

Figure 14: Module on DIN Rail, and method of removal

7.9 Changing the Batteries

To change the batteries in Vortex DIN, Vortex Rack and Vortex Panel, simply disconnect the old
batteries from the Power Monitoring Module and connect the new ones. It is not necessary to remove
the power in order to carry out this function.

To change the batteries in Vortex in the standard enclosure follow the instructions below. The backup
batteries can be changed without switching the power off.

1. Disconnect the batteries at the top right of the Power Monitoring Module (see Figur e 11, page

35).

2. Unscrew the two large central screws on the Power Monitoring Module and gently pull it out

without disconnecting any other cables (see Figure 15).

3. Unscrew the three screws holding the metal bracket over the front of the battery compartment.

Remove the bracket.

4. Change the batteries. Tuck the fuse into the space at the right of the batteries and ensure that the

connecting wires to the Po wer Monitor ing Module are out at the top.

5. Screw in the bracket and the Power Monitoring Module.

6. Connect the batteries to the P ower Monitoring Module.

Vortex Manual Maintenance

Issue 7 December 2009 57

MAINTENANCE

Figure 15: Removing batteries from Vortex Standard Enclosure

Note: for clarity, cables have been omitted from the diagram. This operation can be carried out without
disconnecting the Power Monitoring Module from the system, as described in the text.

Appendix A Vortex Manual

58 Issue 7 December 2009

APPENDICES

APPENDIX A:
GLOSSARY

This manual uses the following terminology, acronyms and abbreviations.

%LEL Percentage of Lower Explosive Limit: a way of expressing the

concentration of a flammable gas.

%VOL Percentage by Volume: the concentration of a gas expressed as a

percentage of the total volume of the mixture of gases. Also
abbreviated to v/v.

Cal

The process of accounting for detectors

DCS Distributed Control System

EMC

Electromagnetic Compatibility

FRAM

Ferro-electric Non-volatile RAM, this is the type of non-volatile

memory used in the Vortex node controller module.

Inhibit

Breaking the link between a channel and the associated outputs;

this is to avoid generating an alarm while testing or calibrating a
detector.

IS

Intrinsically safe: used to describe a device or circuit designed

not to produce a spark or thermal effect capable of igniting a
given flammable atmosphere.

LED Light Emitting Diode

Modbus

Protocol used on RS485 and RS232 interconnections.

PC

Personal Computer

PCB

Printed Circuit Board

PLC Programmable Logic Controller

ppm

Parts per million: a measure of gas concentration when the

concentration is very small.

Relay Logic The interconnection between detectors and relays, handled by

the Node Controller Module.

RS232 Hardware serial communications standard between personal

computers and V ortex. The Vortex system works with the
Modbus protocol over this link.

RS485 Master-slave serial communications standard, used between

PLCs or DCSs and Vortex. T he Vortex system works with the
Modbus protocol over this link. This standard is multi-drop, that
is, a number of Vortex systems can be controlled by a single
master system.

Vortex Manual Appendix A

Issue 7 December 2009 59

APPENDICES

Sink (detector

configuration)

One side of a sink detector is connected directly to ground. The

relevant channel should be configured for the detector used. See
the detector specification sheet to see whether it is source, sink
or dual.

Source (detector
configuration)

One side of a source detector is connected directly to the supply.
The relevant channel should be configured for the detector used.
See the detector specification sheet to see whether it is source,
sink or dual.

SPCO

Single Pole Changeover; a type of relay.

SWA

Steel wire armoured, a type of cable which is enclosed in steel

wire for protection.

Zero

The process of offsetting inputs to account for detectors which

do not give exactly 4mA.

Zero Suppression

An option that applies to gas detectors. When this option is

selected (the default), readings less than 3% of full scale are
suppressed to zero. See section 0.

Zone 1, 2, 3

In the Vortex system, refers to the four detector channels in one

Quad Channel Inp ut Module. No t to be confused with the
standard terms used in classifying hazardous areas.

Appendix B Vortex Manual

60 Issue 7 December 2009

APPENDICES

APPENDIX B:
ELECTRICAL CONNECTIONS

Figure 16: Connection schematic for the Vortex system

Appendix B Vortex Manual

62 Issue 7 December 2009

APPENDICES

Figure 17: Wiring diagram for the Node Controller Module

Vortex Manual Appendix B

Issue 7 December 2009 63

APPENDICES

Figure 18: Wiring diagram for the Quad Channe l Input Module

Appendix B Vortex Manual

64 Issue 7 December 2009

APPENDICES

Figure 19: Wiring diagram for the Rela y Output Module

Vortex Manual Appendix C

Issue 7 December 2009 65

APPENDICES

APPENDIX C:
LIST OF SPARE PARTS

Description Part Number

Node Controller Module S01937
Quad Channel Inp ut Module S01935
Relay Output Module S01939
Vortex Display Module S01913
Rack Display Module S011030
Panel Display Module S011029
Panel Overlay Label M05746
Power Monitoring Module S01941
Instruction Card M07212
M20 plastic gland plug M04561
Key M02315
RS232 communications cable E07533
Vortex Ribbon cable assembly E07524
Vortex Rack/Panel/DIN ribbon cable E07554
3 way connector E07101
2-way connector E07100
VortexPC software C01758
DIN Rail Mounting Kit for Power

Monitor Module

C01794

Vortex Bus Spares Assembley C01768
Vortex Bus extension kit C01800

Appendix D Vortex Manual

66 Issue 7 December 2009

APPENDICES

APPENDIX D:
CROWCON DETECTOR RANGE

The following list gives details of some of Crowcon’s detectors, in manufacture currently, for use with
Vortex. This list is not definitive as new products are being added to the range all the time. For the
most up to date information refer to the Crowcon Web page at www.crowcon.com.

Product

Name

Type of Detector Typical Range/Gas

Xgard Type 1 Electrochemical.

2-wire 4-20mA sink, loop powered, local amplifier. Output is
proportional to the gas concentration at the dete c tor.

Intrinsically safe.

Various ranges .
Most toxic gases, oxygen.

Xgard Type 2 Electrochemical.

2-wire 4-20mA source or sink, loop powered, includes a local
amplifier. Output is proportional to the gas concentration at
the detector. Sink device.

Flameproof.

Various ranges . Oxygen,

carbon monoxide, hydrogen,
and hydrogen sulphi de.

Xgard Type 3 Pellistor/catalytic bead.

3-wire mV bridge output. Requires converter to connect
to Vortex. Output is proportional to the gas concentration at

the detector.
Flameproof.

0-100% LEL.
Most flammable gases.

Xgard Type 4 Pellistor/catalytic bead.

High temperature version: ope ration up to 150ºC.

3-wire mV bridge output. Requires converter to connect
to Vortex. Output is proportional to the gas concentration at

the detector.
Flameproof.

0-100% LEL.
Methane.

Xgard Type 5 Pellistor/catalytic bead.

3-wire 4-20mA source or sink output, includes a local
amplifier. Output is proportional to the gas concentration at
the detector.

Flameproof.

0-100% LEL.
Most flammable gases.

Xgard Type 6 Thermal conductivity.

3-wire 4-20mA source or sink output, includes a local
amplifier. Output is proportional to the gas concentration at
the detector.

Flameproof.

0-100% vv.
Suitable for binary gases only.

Vortex Manual Appendix D

Issue 7 December 2009 67

APPENDICES

Product

Name

Type of Detector Typical Range/Gas

TXgard-IS+ Electrochemical.

2-wire 4-20mA sink, loop powered, local amplifier with
display. Output is proportional to the gas concentration at the
detector.

Intrinsically safe.

Various ranges .
Most toxic gases, oxygen.

TXgard P lus Electrochemical.

3-wire 4-20mA source or sink output, includes a local
amplifier and display. Output is proportional to the gas
concentration at the detector.

Flameproof.

Various ranges . Oxygen,
carbon monoxide and
hydrogen sulphide only.

Flamgard Plus Pellistor/catalytic bead.

3-wire 4-20mA source or sink output, includes a local
amplifier and display. Output is proportional to the gas
concentration at the detector.

Flameproof.

0-100% LEL.
Most flammable gases.

Nimbus Infrared.

3-wire 4-20mA source a nd sink output, inc l udes a local
amplifier. Output is proportional to the gas concentration at
the detector.

Flameproof.

0-100% LEL.
Many hydrocarbon gases and

vapours.

Xgard IR Infrared.

3-wire 4-20mA source a nd sink output, inc l udes a local
amplifier. Output is proportional to the gas concentration at
the detector.

Flameproof.

0-100% LEL.
Methane, butane, propane,

ethylene, ethanol, pentane,
hexane, LPG

0-2 or 0-5% CO2.

TCgard Thermal conductivity.

3-wire 4-20mA source or sink output, includes a local
amplifier. Output is proportional to the gas concentration at
the detector.

Flameproof.

0-100% vv.
Suitable for binary gases only.

Detailed Installation, Operating and Maintenance Instructions are supplied with each type of detector.
Read these instructions before connecting the detector to Vortex and applying power.

Detectors not listed may still be used with Vortex. For further details contact Crowcon.

Appendix E Vortex Manual

68 Issue 7 December 2009

APPENDICES

APPENDIX E:
VORTEX CONFIGURATION

The following list shows all the configurable options in the Vortex system. These can be configured from
VortexPC.

Option/Property All owed values and explanat i on

System

System Name 16-character string used to identify the system
Enable Jump on

Alarm

On/Off. If this option is set, the first channel that
causes an alarm is automatically held on the display.
The Hold LED flashes. The display remains held,
even if other channels go into alarm, until the RUN
button is pressed.

Disable Local
Buttons

Y/N. If Y then CAL, ZERO, PEAK HOLD CAL,
CHANNEL TEST buttons have no effect

Disable Internal
Sounder

Y/N. If Y, the internal sounder is disabled.

Modbus address The Modbus address of the Vortex on the system.

Usually 1 unless the system is multidrop.

Number of Quad
Channel Input
Modules

1, 2 or 3

Number of Relay
Output Module s

0, 1, 2, 3 or 4

Channels
Identity 8-character string used to identify the channel.
Enabled On/Off. A detector must be enabled and configured to

participate in the system. If there are no participating
detectors, an E002 error is generated.

Type Gas

Fire (Channel 1 of module only)
Not Configured if channel has no de t ector

Gas detectors
Units Selects the units for Gas Detectors: %LEL, %VOL or

ppm.

Vortex Manual Appendix E

Issue 7 December 2009 69

APPENDICES

Option/Property All owed values and explanat i on

Range For %LEL and %VOL the range can be 0 to 1, 2, 2.5,

5, 10, 20, 25, 50 or 100.
For ppm the range can be 0 to 1, 2, 2.5, 5, 10, 20, 25,

50, 100, 200, 250, 500, 1000, 2000, 2500, 5000,

10000. For the 10000 range, the maximum display is

9990.

Out of range values Interpret High and Interpret Low. Each option can be

set to Info, Inhibit or Fault.
For details, see section 4.4.2.

Alarm Levels 1, 2
and 3

The alarm thres holds must be set within the range for
the detector, using the units specified. The alarm level
is either Rising or Falling.

Zero suppression On/Off. The default is On. When this option is

selected, the readings less than 3% of full scale are
suppressed to zero.

For details, see section 4.4.2.

Fire detectors
Current thresho l ds The current thresholds must be set within the range 0

to 60mA, in the order
Open Circuit < Fire < Short Circuit

Reset time Between 0 and 255 seconds. The time that the loop

current is removed to reset a latched fire detector on
pressing ACCEPT/RESET after a fire alarm.

Stabilisation time Between 0 and 255 seconds. The time allowed for the

fire detector to stabilise after a reset before coming on
line.

Relays
Identity 8-character string used to identify the relay
Enabled On/Off. A relay must be enabled and configured to

participate.

Type This can be set to Not Configured, Non-Latching,

Non-Latching Acceptable, Latching, Latching
Acceptable, Pulsed or Reset Pulse. Unused relays
must be set to Not Configured. Explanations are
given in section 4.5.2.

ON delay time The waiting period before the relay is activated.

Where applicable, 0 to 65535 seconds.

OFF delay time The waiting period before the relay is de-activated,

except for Pulsed and Reset Pulsed, where it is the
period for which is relay is activated. Where
applicable, 0 to 65535 seconds.

Appendix E Vortex Manual

70 Issue 7 December 2009

APPENDICES

Option/Property All owed values and explanat i on

Energisation Normally Energised or De-energised. See section

4.5.2.

Relay logic
Detector Links Allow detector alarms and events to be mapped to

relay logic, see section 4.5.3

System Links Allow the system fault and system sounder to be

mapped to relay logic, see section 4.5.3

Vote Count The count is between 1 and the number of inputs to

the relay, and is t he number of inputs required to
trigger the relay. See section 4.5.3.

Vortex Manual Appendix F

Issue 7 December 2009 71

APPENDICES

APPENDIX F:
EARTHING

Introduction

The following decision tree and the accompanying diagrams can be used to establish the earthing
needed for your system.

Definitions

Intrinsic Safety Earth The earthbar connection to the zener barriers. It

should have its own unique cable connection back to
a central gro unding point.

Isolated power supply A power supply where the 0V line is not connected

to the earth terminal.
The internal power supply in Vortex is isolated.

Galvanic isolator An alternative to a zener barrier that does not require

the high integrity earth.
Examples of galvanic isolators are:
MTL 5041 Repeater Power Supply 4/20mA for 2-

wire transmitters, which is used with 2-wire 4/20mA
gas detectors

MTL 5061 Fire/Smoke Detector Interface, two­channel, loop powered, which is used for fire loops.

Zener barrier A device used to implement a safe interface between

a safe and a hazardous area. The device limits the
amount of voltage and current that can enter the
hazardous area, in order that sparks or heat caused
by an electrical fault in the safe area do not cause an
ignition hazard in the hazardous area. Zener barriers
require a high integrity earth (ground) connect i on,
sometimes known as the Intrinsic Safety Earth.

An example of a zener barrier is the MTL 728 shunt
diode safety barrier.

Questions

These questions are referred to in Figure 20 The possible answers are also listed. Answer the questions
and follow the tree until it refers to the diagrams which should be used as a guide to wiring and
earthing requirements.

Appendix F Vortex Manual

72 Issue 7 December 2009

APPENDICES

Question

no.

Question Possible answers

1 How many sensors require the use of zener

barriers OR galvanic isolators?

NONE
SOME
ALL

2 Does the system use the Vortex internal

mains to DC power supply?

YES
NO

3 Is the external mains to DC power supply

isolated?

YES
NO

4 Is the safe area interface via a zener barrier

device?

YES
NO

Vortex Manual Appendix F

Issue 7 December 2009 73

APPENDICES

Start

Q 1

System is

all IS

System is

mixed IS

and non-IS

System is
not an IS

system

Q 2

Q 3

System can

use either

zener

barrier or

galvanic

isolator

System

must use

galvanic

isolator

Q 2

Q 3

System can

use either

zener

barrier or

galvanic

isolator

System

must use

galvanic

isolator

Q 2

Q 3

Q 4

Diagrams

2 and 4

Diagrams

1 and 5

Diagrams

2 and 5

Q 4

Diagrams
2, 3 and 4

Diagrams
1, 3 and 5

Diagrams
2, 3 and 5

Diagrams

1 and 3

Diagrams

1 and 3

Diagrams

2 and 3

YES

NO

YES

NO

YES

NO

YES

NO

NO

YES

YES

NO

YES

NO

YES

NO

NONE

SOME

ALL

Figure 20 Decision Tree for determining Earthing Requirements

Appendix F Vortex Manual

74 Issue 7 December 2009

APPENDICES

Diagrams

Diagram 1

Connect Vortex chassis (eart h) to TP1 on the Power Mo nitoring Modul e

TP1

Vortex Manual Appendix F

Issue 7 December 2009 75

APPENDICES

Diagram 2

Connect Vortex chassis (earth) to TP2 on the Power Monitoring Module.

TP2

Appendix F Vortex Manual

76 Issue 7 December 2009

APPENDICES

Diagram 3

Sensor connection to Vortex without barrier or isolator.

2-wire

Quad

Channel

Input

Module

2,5,8,11

3,6,9,12

Connection to Vortex chassis

by cable gland

Sensor

3 +

4

-

example: Txgard-IS

Vortex

Vortex Manual Appendix F

Issue 7 December 2009 77

APPENDICES

3-wire

Quad

Channel

Input

Module

1,4,7,10

3,6,9,12

Connection to Vortex chassis

by cable gland

Sensor

SIG

-

example: Flamgard 4/20

+

2,5,8,11

Vortex

In a system with mixed IS and flameproof sensors in a hazardous area (Zone 1 or 2), the flameproof
sensors can be connected as shown above providing the sensor complies with EN50014 and EN50018
(IEC 60079 –0 and IEC 60079 –1).

Appendix F Vortex Manual

78 Issue 7 December 2009

APPENDICES

Diagram 4A

Gas sensor connection to Vortex via a zener barrier.

Quad

Channel

Input

Module

2,5,8,11

3,6,9,12

Connection to Vortex chassis

by cable gland

Sensor

3 +

4 -

example: TXgard-IS

3

4

1

2

Zener barrier

Earth

bar

IS

Earth

Vortex

NOTE: The Vortex 0V line is connected to
earth internally by the barrier.

example: MTL 728

HAZARDO U S AR EA

SAFE ARE A

Vortex Manual Appendix F

Issue 7 December 2009 79

APPENDICES

Diagram 4B

Fire detector connection to Vortex via a zener barrier.

Connection to Vortex chassis

by cable gland

Sensors

example: Apollo

Series 60

3

4

1

2

Zener barrier

Earth

bar

IS

Earth

L1INL1

OUT

L2

L1INL1

OUT

L2

Quad

Channel

Input

Module

Vortex

3

2

example: MTL 728

HAZARDO U S AR EA

SAFE ARE A

Appendix F Vortex Manual

80 Issue 7 December 2009

APPENDICES

Diagram 5A

Gas sensor connection to Vortex via a galvanic isolator.

Connection to Vortex chassis

by cable gland

Sensor

3 +

4 -

example: TXgard-IS

2

1

11

12

Isolator

Quad

Channel

Input

Module

1,4,7,10

3,6,9,12

2,5,8,11

13

14

Vortex

I

I

HAZARDO U S AR EA

SAFE ARE A

example: MTL 5041

Vortex Manual Appendix F

Issue 7 December 2009 81

APPENDICES

Diagram 5B

Fire sensor connection to Vortex via a galvanic isolator (dual).

Connection to Vortex chassis

internal screw terminal

Sensors

example: Apollo

Series 60

9

8

Isolator

5

4

L1INL1

OUT

L2

L1
INL1OUT

L2

Quad

Channel

Input

Module

Vortex

3

2

L1INL1

OUT

L2

L1INL1

OUT

L2

2

1

12

11

Quad

Channel

Input

Module

3

2

example: MTL 5061

HAZARDO U S AR EA

SAFE ARE A

Wiring Standards

Refer to section 3.6 for general cabling requirements.

In the UK and Europe the following standards apply regarding earthing and screens.

• Refer to BS EN60079-14 section 12.2.4 for requirements on the earthing arrangement of the

barrier earthbar.

• Refer to BS EN60079-14 section 12.2.2.3 regarding the earthing of screens in the hazardous

area.

Where galvanic isolators are used the connection of the 0V line to the chassis (at Vortex TP1 or at the
external power supply if the power supply is non-isolated) and the chassis to earth must be of high
quality, low resistance and high integrity.

A useful text on earthing is:-

"A definitive guide to earthing a nd bonding in haz ardous areas - TP1121" from MTL Instruments
Group PLC, Power Court, Luton, England, LU1 3JJ.
Web addre ss www.mtl-inst.com.

For installing sounders and other signalling devices into hazardous environments refer to the device
manufacturers data.

Vortex Manual Guarantee Statement

Issue 7 December 2009 83

WARRANTY STATEMENT

Warranty Statement – 07/07

This equipment leaves our works fully tested. I f within the warranty period, the equipment is
proved to be defective by reason of faulty workmanship or material, we undertake at our
discretion either to repair or replace it f ree of charge, subject t o t he co ndit ions below.

Warranty Procedure

To facilitate eff icient pr oce ssing of any claim, contact our customer support team on 01235
557711 with the following information:

Your contact name, phone number, f ax number and em ail address.
Description and quantity of goods being ret ur ned, including any accessories.
Instrument serial number(s).
Reason for return.

Obtain a Returns form f or identification and traceability purpose. This form may be
downloaded from our website ‘crowconsupport.com’, along with a returns label,
alternatively we can ‘email’ you a copy.

Instruments wil l not be accepted for warrant y without a Crowcon Returns Number
(“CRN”). It i s es sent i al that the address label is securely attached to the out er
packaging of the returned goods.

Units returned to Crowcon as faulty and are subsequently f ound t o be ‘fault free’ or
requiring service, may be subject to a handling and car riage charge.

Our liability in respect of defective equipment shall be limited to the oblig at ions se t out in
the guarantee and any extended warranty, condition or statement, express or im plied
statutory or otherwise as to the merchantable q ualit y of our equipment or its fitness for any

Warranty Disclaimer

The guarantee will be rendered invalid if the instrument is f ound t o have been alter ed,
modified, dismantled, or tamper ed with. T he warrant y does not co ver misuse or abuse of
the unit.

Any warranty on batteries may be rendered invalid if an unreasonable charging regime is
proven.

Crowcon accept no liability for consequential or indirect loss or damage howsoever arising
(including any loss or damage arising out of t he use of the instrument) and all liability in
respect of any third party is expressly excluded.

The warranty and guarantee does not cover the accuracy of t he ca librat ion of the unit or
the cosmetic finish of the pr oduct. The unit must be maintained in accordance with the
Operating and Maintenance Instructions.

particular purpose is excluded except as prohibited by statute. This guarantee shall not
affect a customer ’s st atutory rights.

For warranty and technical support enquiries please contact::

Customer Support
Tel [phone]
Fax [phone]
Email ‘[e-mail]’

© Crowcon Detection Instruments Ltd 2007

UK Office

Crowcon Detection Instruments
Ltd

2 Blacklands Way
Abingdon Business Park
Abingdon
Oxfordshire OX14 1DY
Tel: [phone]
Fax :[phone]
Email: [e-mail]
Website: www.crowcon.com

USA Office

Crowcon Detection Instruments
Ltd

21 Kenton Lands Road
Erlanger
Kentucky 41018-1845
Tel: [phone] or
1-800-527-6926
Fax: [phone]
Email: salesus a@ c rowcon. com
Website: www.crowcon.com

Rotterdam Office

Crowcon Detection Instruments
Ltd

Vlambloem 129
3068JG
Rotterdam
Netherlands
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.crowcon.com

Singapore Office

Crowcon Detection Instruments
Ltd

Block 194 Pandan Loop
#06-20 Pantech Industrial

Complex
Singapore 128383
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.crowcon.com

Crowcon reserves the right to change the design or specification of this product without notice.