CTM530

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 APPROVED 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 “Trouble” 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 provides Modbus over RS-485 communications and two 4-20mA outputs, one which allows monitoring of the module status and the other for monitoring 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). The meter display provides a simple “on screen” calibration procedure allowing the measurement to be field calibrated to the installed detector length and ambient temperature for optimal accuracy