Protectowire CTM-530 Series Mode d'emploi

FireSystems

PROTECTOWIRE

PC--1239

JP2

CTM-530

LINEAR

HEAT

DETECTOR

POWER

ALARM

FAULT

SHORT

APPROVED

OKESC

JP2

PROTECTOWIRE CTI-155

NORMAL

12:45 PM 4/16/2020

PC--1239

JP2

CTM-530

LINEAR

HEAT

DETECTOR

POWER

ALARM

FAULT

SHORT

APPROVED

OKESC

JP2

PROTECTOWIRE CTI-155

NORMAL

12:45 PM 4/16/2020

CTM-530 Series Interface Module

with Modbus Over RS-485

Installation and Operation Guide

An ISO 9001 Registered Company

FireSystems

PROTECTOWIRE

MAN-2006 Last modiﬁed 3/26/2021

Contains updates included in Firmware v1.3.5

60 Washington Street

Pembroke, MA 02359

Phone 781-826-3878 • Fax 781-826-2045

E-Mail: pwir[email protected]

WWW.PROTECTOWIRE.COM

CTM-530 Series Interface Module

Installation and Operation Guide

How CTI Technology Works

Digital Linear Heat Detection Operation ......................................................................................... 1

CTI Linear Heat Detection Operation ............................................................................................. 2

The CTM-530 Interface Module

General Information......................................................................................................................... 4

Description....................................................................................................................................... 4

Speciﬁcations.................................................................................................................................... 5

4-20mA Output Information ........................................................................................................... 6

Installation and Wiring..................................................................................................................... 7

Mounting and Location ....................................................................................................... 7

Wiring Diagram................................................................................................................... 7

Detector Wiring................................................................................................................... 8

Interface Wiring................................................................................................................... 8

Power Wiring....................................................................................................................... 9

4-20mA Outputs wiring ...................................................................................................... 9

Conﬁguration & Feature Selection ................................................................................................. 10

Conﬁguration Prerequisites................................................................................................ 10

Initial Power Up................................................................................................................. 10

Display, Menus and Navigation Controls........................................................................... 10

Accessing the Menu ........................................................................................................... 10

Resetting the Detector ....................................................................................................... 11

Detector Type Selection ..................................................................................................... 12

Display Units..................................................................................................................... 13

Alarm Point Location (APL) Setup .................................................................................... 13

Junction Test Bypass...........................................................................................................17

Time and Date Setup......................................................................................................... 18

Password Setup .................................................................................................................. 18

Factory Restore .................................................................................................................. 18

Event History..................................................................................................................... 19

Cold Junction Test and Offset............................................................................................ 20

4-20mA Output Calibration.............................................................................................. 21

Operation and Testing .................................................................................................................... 22

Testing Notes..................................................................................................................... 22

Inspection of the Installation.............................................................................................. 22

Conﬁrming Detector Connection Polarity......................................................................... 22

Detection Operation and Testing ....................................................................................... 23

1. Test Open Circuit Monitoring ...................................................................................... 23

2. Test Short Fault Monitoring.......................................................................................... 24

3. Testing Alarm Activation with CTI............................................................................... 26

4. Verify Temperature Measurements ................................................................................ 28

Testing Accessories..................................................................................................................... 29,30

Hazardous Location Applications (Factory Mutual Only)............................................................... 31

Intrinsic Safety Barrier, Option I........................................................................................ 31

ISB Illustration Drawing IL-1622...................................................................................... 32

Table of Contents

Modbus Over RS-485 Operation Guide

Descriptions ................................................................................................................................... 33

RS-485 Serial Bus .............................................................................................................. 33

Modbus Protocol ...............................................................................................................33

CTM-530 Modbus over RS-485........................................................................................ 33

Speciﬁcations.................................................................................................................................. 34

Port Speciﬁcations.............................................................................................................. 34

Protocol Speciﬁcations ....................................................................................................... 34

Wiring

Wiring Description............................................................................................................35

Wiring Diagram................................................................................................................. 35

Example Bus Diagram ....................................................................................................... 35

Conﬁguration Settings

Conﬁguration Settings Descriptions................................................................................... 36

Accessing the Modus Menu ............................................................................................... 36

Setting the Slave Address.................................................................................................... 37

Setting the Parity ............................................................................................................... 37

Setting the Baud Rate ........................................................................................................ 38

Modbus Communications

Modbus Protocol Info........................................................................................................ 38

Register Overview.............................................................................................................. 38

Module Status.................................................................................................................... 39

Temperature Readings........................................................................................................ 40

Event Distance Measurements............................................................................................ 40

Cold Junction Temperature................................................................................................ 40

Detector Type .................................................................................................................... 41

Initialize / Reset ................................................................................................................. 41

Table of Contents

Page 1

CTI stands for Conﬁrmed Temperature Initiation and is a new Digital Linear Heat Detection technology

created and patented by The Protectowire Company. This technology is an enhancement to traditional digital

linear heat detection technology and provides for short circuit discrimination.

CTI conﬁrms thermal activation of the Digital Linear Heat Detector before an alarm is initiated thereby re-

ducing the incidence of false alarms created by physical damage to the detector.

Protectowire CTI Digital Linear Heat Detectors are the only digital linear heat detectors to provide Short

Circuit Discrimination.

Introduction to CTI™ Technology

How CTI™ Technology Works

Digital Linear Heat Detection Operation

To understand how CTI technology works it is important to have an understanding of how traditional digital

linear heat detectors operate.

Figure 1 - Traditional digital linear heat detectors are constructed of a twisted pair of spring conductors coated

with a thermoplastic coating designed to soften at a speciﬁc temperature. An initiating device circuit monitors

a length of this detector installed in an area to be protected.

Monitor

Circuit

End Line

Resistor

Heat Sensitive

Insulation

Normal

Figure -1

Figure 2 - Traditional digital linear heat detectors are constructed of a twisted pair of spring conductors coated

with a thermoplastic coating designed to soften at a speciﬁc temperature. An initiating device circuit monitors

a length of this detector installed in an area to be protected.

HEAT

Monitor

Circuit

End Line

Resistor

Heat Sensitive

Insulation

Alarm!

Figure - 2

Page 2

CTI technology is an enhancement to standard digital linear heat detection operation. Where traditional dig-

ital linear heat detectors have a single mode of detection, CTI digital linear heat detectors add a second mode

of detection. This second mode of detection utilizes the thermo-electric effect to measure the temperature at

the short circuited point of the detector to conﬁrm a true alarm condition exists.

Figure 3 - The Thermo-electric Effect is the production of an electromotive force (Voltage) in a loop of

conductors consisting of two dissimilar materials. When two junctions in the conductors are maintained at

different temperatures a voltage is produced relative to the temperature difference between the two junctions.

This voltage is used to measure temperature in devices called Thermocouples.

CTI™ Digital Linear Heat Detector Operation

Figure -3

Figure 4a - CTI digital linear heat detectors are constructed of a twisted pair of dissimilar metal spring con-

ductors coated with a thermoplastic coating designed to soften at a speciﬁc temperature. An initiating device

circuit monitors a length of this detector installed in the area to be protected.

Conductor A

Measurment

Junction

Conductor B

Voltmeter

Reference

Junction

Measurment

Device

Thermocouple

HEAT

This very reliable method of detection has been in use for over 75 years in the ﬁre protection industry; however

the possibility of mechanical damage causing a short circuit does exist. A short caused by mechanical damage

will produce a false alarm condition therefore care needs to be taken during installation and design to locate

the detector in areas it is least likely to be subjected to physical damage.

Monitor

Circuit

End Line

Resistor

Heat Sensitive

Insulation

Normal

Figure -4a

Page 3

Figure 4b - When a short occurs at a point along the detectors length an initiating device circuit detects the

short and then automatically switches to a thermocouple measurement mode. The shorted portion of the de-

tector forms a thermocouple junction which can be measured. The thermocouple measurement represents the

current temperature of the shorted portion of detector. If the short is below the pre-set alarm threshold for the

detector, in this example 280°F (138°C), a short fault is reported instead of an alarm condition.

Figure -4b

Figure 5 - If the short temperature is measured to be above the pre-set 280°F (138°C) alarm threshold, as in

this example, an alarm condition is produced immediately.

COLD

TEMP

Monitor

Circuit

End Line

Resistor

Heat Sensitive

Insulation

Short

82f-27C

HEAT

TEMP

Monitor

Circuit

End Line

Resistor

Heat Sensitive

Insulation

Alarm

282f-139C

Figure -5

The CTM-530 Series

Interface Module

General Information

The Protectowire CTM-530 is a detection control module that is an interface between a main fire alarm

control panel detection circuit or addressable node and Protectowire Type CTI Linear Heat Detector. The

module provides one (1) supervised detection circuit that may be field wired for either Class A (Style D) or

Class B (Style B) service. The alarm initiating circuit is capable of operating a maximum of 4000 feet (1220

meters) combined total of Protectowire Type CTI Linear Heat Detectors and appropriate thermocouple

grade extension cable. Protectowire offers thermocouple grade extension cable as part numbers PWTX-200

and PWTX-500. The PWTX cable offered is for non-classified hazards only. The CTM-530 initiating circuit

is designed to monitor Protectowire Type CTI Linear Heat Detector only and does not support other types

of normally open contact alarm initiating devices.

Description

The CTM-530 operates using the Protectowire patented CTI Conﬁrmed Temperature Initiation technology.

When paired with Protectowire Type CTI Linear Heat Detectors, the module can distinguish between a me-

chanical short in the linear heat detector and thermal alarm activation, which greatly reduces the risk of false

alarms resulting from physical damage to the detector. This multi-criteria detection method provides for

short circuit discrimination, a feature previously unavailable for conventional digital type linear heat

detectors.

The CTM-530 is designed for easy installation and is available in an optional NEMA-4X rated enclosure for

mounting outside of the host ﬁre alarm control panel or remotely near the hazard to be protected. In order

to ensure proper operation, each CTM-530 module requires regulated resettable external power which is

normal-ly provided by the host ﬁre alarm panel. Each module contains a green “Power-On” LED indicator,

one (1) red “Alarm” LED indicator, one (1) yellow “Fault” LED indicator and one (1) yellow “Short”

indicator. On (1) set of Form C alarm contacts, one (1) set of Form C general fault contacts and one(1) set of

Form C short circuit fault contacts are provided to connect the unit to the host ﬁre alarm panel. The module

also provides tow 4-20mA outputs one which allows monitoring of the module status and the other for alarm

point location information.

In addition to the features listed above the standard version of the module, model CTM-530, provides a 4x20

LED back-lit LCD display and navigation buttons for access to a complete menu driven user interface. Also

available is model CTM-530LT which is intended for use in low temperature applications. The LT version of

the interface module contains no LCD display or navigation buttons and no menu accessible user interface

and therefor requires the use of the optional CTMP-1 Programmer for system commissioning, setting alarm

temperatures and accessing history data.

Page 4

PC--1239

JP2

CTM-530

LINEAR

HEAT

DETECTOR

POWER

ALARM

FAULT

SHORT

APPROVED

OKESC

JP2

PROTECTOWIRE CTI-155

NORMAL

12:45 PM 4/16/2020

PC--1239

JP2

CTM-530

LINEAR

HEAT

DETECTOR

POWER

ALARM

FAULT

SHORT

APPROVED

OKESC

JP2

PROTECTOWIRE CTI-155

NORMAL

12:45 PM 4/16/2020

Page 5

Speciﬁcations

Electrical

• Power input - Regulated 12 to 24 VDC (+10% / -15%) @ 1.6 Watts

• Power Limited, onboard surge and EMI protection device

Inputs

• One initiating device circuit capable of monitoring up to 4000 Feet (1220 Meters) of Protectowire Type

CTI Linear Heat Detector. For all CTI type detectors, twisted “T” type extension grade thermocouple

wire is required for use as interconnecting wire on the detection circuit. Minimum conductor size is

20AWG (0.812mm), or as require by local code.

• For intrinsically safe applications (Option I), the maximum detector length per zone is 2,000 feet

(600m) or less, as determined by the hazardous location calculation and application.

Environmental

• Ambient temperature range:

Standard version (With integrated LCD display) -20° to 120°F (-29° to 49°C)

LT version (Without integrated LCD display) -40° to 120°F (-40° to 49°C)

Standard & LT versions FM tested to 140°F (60°C) max

• Humidity: Max. 95% non-condensing

Visual Annunciation

• 4x20 Character LED back-lit LCD display

• One green “Power” indicator

• One red “Alarm” indicator

• One yellow “Fault” indicator

• One yellow “Short” indicator

Status Relay Contacts (Rated 1 ampp @24VDC Resistive Load)

• One (1) set of Form C (SPDT) Fault Contacts

• One (1) set of Form C (SPDT) Short Fault Contacts

• One (1) set of Form C (SPDT) Alarm Contacts

• One yellow “Short” indicator

4-20mA Outputs

• One (1) 4-20mA Output for module status

• One (1) 4-20mA Output for Alarm Point Location Readings

Board Assembly Dimensions

• 6” W x 4” H x 1.5” D (15.24cm x 10.16cm x 3.8cm)

• Mounting holes #4 holes at 5.5” (13.97cm) x 3.5” (8.89cm) spacing

Enclosure Option

• 8” H x 6” W” x 4” D (27.24cm x 15.24cm x 10.16cm)

• Add 1.6” (4cm) to overall height for external mounting feet

• Clear full view door

• *NEMA 4X Rated (Rating UL listed only)

(Closest IEC equivalent - IP66)

Note: Option I (ISB) increases enclosure size

* Additional enclosures and sizes available. Consult factory.

Page 6

4-20mA Output Information

Description - The CTM-530 provides wo 4-20mA outputs that allow for monitoring of the module status

and active alarm point location reading. These outputs are intended for annunciation purposes only. Module

monitoring is intended to be accomplished using the on board supplied dry contacts connected to a listed or

approved ﬁre detection control panel initiation deice circuit.

For Class “A” wiring conﬁguration the status output will also indicate which detector input is currently being

measured by the alarm point location meter. The measurement is alternated between inputs approximately

every 3 seconds with the status output indication which input is currently being read.

The output levels are detailed below.

Status Output - 4-20mA Output Loop 1:

Loop Fault - 4mA or less

Open - 6mA

Normal - 10mA

Initiating Device Circuit Out Short Fault - 13mA

Initiating Device Circuit Return Short Fault - 15mA

Initiating Device Circuit Out Alarm - 17mA

Initiating Device Circuit Return Alarm - 19mA

Note: For systems employing an isolated power source for the 4-20mA loops; Module Power Failure will

report at greater than or equal to 20mA.

Alarm Point Location Output - 4-20mA Output Loop 2:

4-20mA Full Scale corresponds to 0-8000 Feet

4mA = 0 Feet -20mA = 8000 Feet.

To calculate current to distance in feet use the following formula:

Current in mA = (I)

(I-4) / 0.002 = Distance in Feet

To convert to Meters:

Distance in Feet x 0.3048

Note: To insure status levels the total 4-20mA measurement loop resistance including feed cable, measurement device

and load resistor must not exceed the values below.

Supply Voltage @ 12VDC - Total loop resistance not to exceed 300 Ohms

Supply Voltage @ 24VDC - Total loop resistance not to exceed 800 Ohms

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