CTM-530 Module (CTI)

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The CTM-530 is a detection control module that acts as 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 up to 4000 feet (1220 meters)* of Protectowire Type CTI Linear Heat Detector. The CTM-530 initiating circuit currently does not support other types of normally open contact alarm initiating devices.

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Description

The CTM-530 operates using Protectowire’s patented CTI Confirmed Temperature Initiation technology. When paired with Protectowire Type CTI Linear Heat Detectors, the module can distinguish between a mechanical short in the linear heat detector and a thermal alarm activation thereby greatly reducing the risk of false alarms. This multi-criteria detection method provides for short circuit discrimination, a feature previously unavailable for digital type linear heat detectors.

The CTM-530 is designed for easy installation and is optionally available in a 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 normally 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” fault LED indicator. One (1) set of Form C alarm contacts, one (1) set of Form C trouble contacts and one (1) set of Form C short circuit fault contacts are also provided to connect the unit to the host fire alarm panel. The module also is equipped with two 4-20mA outputs, one which allows monitoring of the module status and the other for monitoring alarm point location information. Additionally, Modbus communication over RS-485 supplies the end user with status, temperature, and alarm point location information.

The standard CTM-530 module contains a built in Protectowire Alarm Point Location Meter. This meter will automatically display the distance from the beginning of the detector run to the heat actuated (shorted) portion of the detector. The Alarm Point Location Meter can be programmed to display in either standard units (Feet) or metric units (Meters).