CMAD Engineering Solution

The Isolator is placed at intervals on the loop and ensures that, in the case of a short circuit, only the section between the isolators will be affected. When the short circuit is removed, the isolators automatically restore power and data to the isolated section.Detects wiring short-circuits using patented technology, Minimizes disruption from short-circuits, Automatic de-isolation on short-circuit removal, Up to 20 devices may be installed between isolators

The Mini Switch Monitor is a miniature interface. The monitor is designed to fit into equipment with limited space or to be mounted within an enclosure such as a manual call point. The monitor can also be fitted onto a standard 35mm DINrail using a twist-click motion. The Mini Switch Monitor is designed to monitor the state of one or more single-pole, volt-free contacts. It also reports the contact status to Apollo compatible fire control panels. The Mini Switch Monitor features a 20I short–circuit isolator as standard and can be used as an interrupt or non-interrupt device. The interrupt feature (selected via the DIL Switch) means the monitor can be used where a priority response is required, in particular for monitoring an individual or a zone of conventional manual call points. Note: When the eighth section of the DIL switch is changed, the Mini Switch Monitor will change the type code it sends to the panel. The panel will have to be programmed to accept this change. The unit provides “normal”, “fault”, “pre-alarm” and “alarm” states to the control equipment. The states are derived from the switched resistive values shown in Table 2. The device accepts a maximum line resistance of 50Ω and requires a 20kΩ End-of-Line resistor. 

The Isolator is placed at intervals on the loop and ensures that, in the case of a short circuit, only the section between the isolators will be affected. When the short circuit is removed, the isolators automatically restore power and data to the isolated section. The Isolator can only be used with an Isolator base and will not fit a standard addressable base. • Detects wiring short-circuits using patented technology • Minimizes disruption from short circuits • Automatic de-isolation on short-circuit removal • Up to 20 detectors (or equivalent) may be installed between isolators

The XP95 Zone Monitor with Isolator powers and controls the operation of a zone of up to 20 Orbis/Series 65 Apollo fire detectors from the Apollo loop and is for indoor use only. Features The XP95 Zone Monitor with Isolator returns a preset analogue value when all detectors on the zone are in quiescent state. A different value is returned when a detector changes to the alarm state. The Zone Monitor with Isolator latches in the alarm state. The Zone Monitor with Isolator is fitted with a bi-directional short circuit isolator and will be unaffected by loop shortcircuits on either the loop input or loop output. Two LEDs, one red and one yellow, are visible through the front cover of the enclosure. The red LED is illuminated to indicate that a fire alarm condition has been detected on the zone wiring. The yellow LED is illuminated whenever the built-in isolator has sensed a short-circuit loop fault.

An extensive range of interfaces are available to support the Eaton range of UL intelligent addressable control panels, providing solutions for most design requirements. The UL single channel output unit (ULMCOM) is an extremely compact unit ideal for incorporation in to external equipment and suitable for switching low voltages (24V dc at 1A maximum). This unit incorporates a set of non latching relay contacts and is suitable for switching HVAC control circuits, plant shutdown control circuits, fire door closure etc. The ULMCOM is identified by the panel as an input / output unit, with a maximum of 20 units permitted per loop.