Gent Single channel Mains switching interface (c/w enclosure)

The S4-34401 provides one mains switching relay output for a Vigilon device loop. Its single-pole changeover contacts, COM1, NC1 and NO1, connect at TB1. The output uses channel 1 in every mode that includes an output and switches an external 230V AC supply to a resistive load. The interface takes its own power from the control panel through the loop at TB6. Cables carrying more than 48V, both live and neutral, need suitable external fuses. The relay contacts are rated at 16 A at 250 V.

Four monitored low voltage inputs connect at TB5 when configured with the Gent Commissioning Tool, version 1.28 or later. Each accepts normally open or normally closed clean contacts, with normally closed contacts suited to fail-safe applications. Use a 10K resistor in series with the contacts and a 10K end-of-line resistor over a cable run of up to 50 metres. Each input can be configured as fire, fault, supervisory or confirmation, with an acceptance delay to filter brief changes of state.

A confirmation input monitors the response of equipment controlled by the relay. It raises a timeout fault if the expected change of state does not arrive within the configured period. Verbose operation also generates supervisory messages as the input changes state; silent operation gives the timeout fault only. Channel 1 can alternatively be configured as a zone input.

The unit has one output, so it switches one mains circuit. Its four inputs do not add further outputs. The S4-34404 provides four mains switching outputs and four monitored inputs where several circuits need to be controlled at one location. For low voltage switching, the S4-34420 provides a changeover relay with one input, while the S4-34450 provides four configurable input or output channels.

Configure all channels with the Gent Commissioning Tool, version 1.28 or later, before connecting the external circuits. Set unused channels to unused. EN panels need Main Controller V4.43 or later and Loop Processor V4.41 or later; BS panels need V3.97 or later on both. Output terminal order is COM, NC, NO on units made after September 2013 and NO, COM, NC on units made before that date. Follow the markings on the fitted terminal block and keep output, input and loop cables as far apart as the installation allows.

The unit comes assembled in an ABS V-0 enclosure with a dark grey back box and light grey lid. Eight 10K resistors, one Allen key and seven cable-entry bungs are supplied. It measures 227mm high by 245mm wide by 77mm deep and weighs about 1.1kg. There are seven top and seven rear 20mm cable entries, nine cable earth points and channel labels inside and outside the door. Flush mounting allows a depth of up to 48mm in a 210mm by 233mm aperture. The mains interface pair operates from -10°C to +60°C, with storage from -20°C to +70°C and up to 95% non-condensing relative humidity at +5°C to +45°C.