Changeover and monitoring module UMC107E

Changeover and monitoring module with single fault tolerance for medical IT systems Further measures to increase the electrical safety Product description The factory-made modules of the UMC107E series are used to change over (t ≤ 0.5 s) between two supply sources (AV/SV resp. SV/UPS) and for IT system monitoring in medical locations. Status indication and alarm texts on the alarm indicator and operator units takes place via BMS bus. The module is suitable for mounting onto all common DIN rail systems (equip-ment racks have to be provided by the customer). • Continuous functional monitoring of the actuation devices and automatic processes (coil, control contacts, connections)• Monitoring of essential connecting leads such as to– current transformers – transformer temperature sensorsMonitoring for short-circuits upstream and at the output of the changeover device and the pre-defined switching behaviour. Functions in accordance with IEC 60364-7-710 / DIN VDE 0100-710 (VDE 0100-710) • Voltage monitoring with control function– on the preferred supply (Line 1) – on the second supply (Line 2) – at the output of the changeover module (Line 3) • Variable changeover period t ≤ 0.5…20 s • Protection against wrong operation by multiple interlocking • Cables laid to resist short-circuits and earth faults • Control circuit with single fault tolerance • Automatic return on recovery of the voltage • Functional testing including checking of the operating times • Insulation, load current and temperature monitoring for IT systems in group 2 medical locations• Monitoring of the system/PE connections of the insulation monitoring device • Available with insulation monitoring for for main OP lighting circuits Single fault tolerance The changeover modules continuously monitor the functions and in this way ensure that an individual, foreseeable error cannot lead to a failure of the power supply manufacturers at the output of the automatic changeover and monitoring module (DIN VDE 0100-710: 2002-11 para. 710.521.6 control circuits). Indications/messages Description of the changeover function • Plain text messages display for all essential operating, fault and alarm messages. • Information exchange between alarm indicator and operator units via BMS bus • Common alarm contact with protective separation in accordance with EN 50178 In fault-free condition, the preferred supply line is switched on. If the voltage drops below the set response value, changeover to the second supply will automatically take place. The changeover period can be set individually. In order to ensure operational readiness, the second line as well as the output of the changeover module (Line 3) are monitored too. On voltage recovery, return to the preferred supply line occurs automatically. Owing to variable delay times (return transfer time or pause time), the UMC meets the individual installation-specific requirements (e.g. coordination of several changeover modules, reduction of switching energy). The function of the changeover module can be tested via the test button.
2.2 UMC107E – Typical example Device features • Complete solution for changeover and IT system monitoring up to 80/42 A• Factory-made, tested module for installa-tion that saves both time and costs• Variable changeover period t ≤ 0.5…20 s • Concise IT system monitoring (insulation, load, transformer temperature• Connection monitoring • Suitable for all common DIN rail systems • Screwless-type connection technique • Bus technology for easy installation and reduced fire load • Clear menu structure with LC display al-lows easy parameter setting• Power supply for MK2430/MK800 • Voluntary testing by TÜV Süddeutschland
46 Main catalogue part 2 – 05.2008/Hospital engineering