Siemens XDLC Class X DCLC Device Loop Card Cerberus PRO Fire Alarm NEW

The Model XDLC Device Loop Card from Siemens Industry, Inc., is the interface for connection of Desigo Fire Safety Modular/Cerberus PRO Modular smoke detectors, MultiCriteria detectors including Carbon Monoxide, manual stations, monitor devices, and control devices to the Desigo Fire Safety Modular/Cerberus PRO Modular System. The XDLC uses one network address on the system. The application program that is loaded into the on-board microprocessor controls the XDLC operation. The XDLC contains 16 LEDs for diagnosis of problems. Ground fault detection is provided by the loop. All field devices connected to the XDLC are addressed and tested using the Device Programming Unit (DPU). The XDLC initializes, operates, and maintains all devices residing on the loop. The XDLC communicates all relevant device and event information, such as alarms and troubles, to the PMI-2/PMI-3/OI-C/OI-D (PMI). The sensitivity of any intelligent smoke detector can be checked and adjusted from the PMI through the XDLC. All information about the devices on the loop can be displayed on the PMI. The XDLC allows the System polarity insensitive devices to be connected without generating errors. NOTE: PMI = PMI-2/PMI-3/FCM2041 The XDLC supports four Class A (DCLA) or Class X (DCLC) loops (eight Class B [DCLB] parallel lines/stubs) of up to 252 Desigo Fire Safety Modular/Cerberus PRO Modular intelligent field devices as well as device accessories (relay bases, audible bases, and remote lamps) in any combination. The microprocessor controls the on-board isolators to isolate any zone from the loop if one of them is shorted. When one zone is isolated from the loop, the other zones will still work. The on-board microprocessor provides the XDLC with the ability to function and initiate alarm conditions even if the main PMI CPU fails. The XDLC accomplishes this “degrade” mode of operation by monitoring the communications with the PMI. In the case of the failure of the PMI, the XDLC continues to monitor its associated devices, and if any alarm device activates, the XDLC will activate the outputs selected for “degrade” mode of operation. Similarly, it will also signal other modules within its backplane as to the degrade alarm condition. Note that output activation in degrade may take up to 60 seconds and that outputs controlling releasing agents are not activated by “degrade” operation. The “Degrade” mode operation is not the same as “Degraded Mode” as in ULCS527.