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Summary of Contents for MS Electronics PCTDS3
- Page 1 PCTDS3 Product Guide Pull Cord Time Delay Switch 3-wire version today, tomorrow and in the future mselectronics.co.uk Issue 3.0...
- Page 2 Product Overview The PCTDS3 Pull Cord Time Delay Switch provides timed switching for lighting, heating, air conditioning and ventilation equipment. For locations suiting pull cord control, the unit offers easy activation of the connected load whilst saving energy by switching it off automatically when not required (after an adjustable period).
- Page 3 Electrical Requirements Before attempting to install the unit, ensure that the intended load and wiring arrangement comply with the following requirements. Figure 2 shows a typical wiring example. • 3-wire (live/neutral + volt-free switch) connection: The unit requires a permanent live/neutral connection, and as such is not suitable for replacing an existing light switch with no neutral conductor at the switch location.
- Page 4 Operation The diagram below illustrates the sequence of operation for the unit. Sequence of Operation PCTDS3...
- Page 5 Example 1: Parallel Wiring Figure 3 illustrates a typical wiring arrangement using two PCTDS3 units; Figure 4 represents the same configuration as applied to a typical ceiling rose lighting circuit. This method can typically reuse pre-existing wiring from a 2-way switching installation where 3-core cable has been run between the switch locations.
- Page 6 The remote interface feature offers the option of lower cost 2-way or multi-way switching by connecting up to five slave switches to a single PCTDS3 master unit. Unlike parallel wiring (Example 1), this method retains full control from any switch location, and does not increase the minimum load requirement.
- Page 7 Fault Finding Ensure the electrical supply is isolated before making any connections or adjustments. Load will not switch on a) Unit is not powered • Ensure the unit is correctly connected to an active mains supply. b) Load is not connected correctly •...
- Page 8 Any modification or damage to the outer casing of the product, as well as any damage to the product due to abuse or incorrect wiring may invalidate the guarantee. e: info@mselectronics.co.uk t: 0333 666 1176/01708 448566 MS Electronics reserves the right to alter or change this specification without prior notice.
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