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mselectronics.co.uk

Technical Specification

Power supply

220V - 240V AC 50Hz (live/neutral)

Output switch type

Volt-free SPST (normally open) relay

Output switch rating

16A, 250V AC (resistive)

Maximum lighting load

Incandescent: 12A (3000W)

Fluorescent: 10A (2500W)

Compact Fluorescent: 10A (2500W)

Remote input type

Non-isolated, momentary (normally open)

Remote input contact closure timing

Brief (on/reset): 50ms < t < 700ms

Extended (off): t > 1000ms

Time delay selection

3 seconds to 30 minutes or

6 seconds to 60 minutes or

12 seconds to 120 minutes

Mounting hardware

20mm (min.) single-gang UK pattress box

Operating temperature

-10°C to +40°C 

Guarantee

5 Years

Weight

87g

Dimensions

86mm x 86mm x 27mm 

Fault Finding

Ensure the electrical supply to the unit is isolated before making any 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

•  Ensure the load is connected appropriately. The relay output is volt-free so must be 

connected suitably to a supply in order to power a load.

•  Check that the load works on its own by bypassing the time delay switch.

c) Remote input is not recognised

•  Ensure the input device in use is supported and is correctly connected: see 

Remote Input Wiring

.

•  Check that the input device (switch or relay output) operates correctly without the 

time delay switch connected. For relays, ensure that the contact closure action 

conforms to the specified timings (see 

Technical Specification

).

Load switches on, but does not switch off (or lighting load flickers)

•  Ensure the set period has elapsed since the last remote input contact closure.

• 

If attempting to cancel the activation period, ensure that the remote input contact 

closure action conforms to the specified timings (see 

Technical Specification

).

Summary of Contents for RTDS3

Page 1: ...Product Guide RTDS3 today tomorrow and in the future mselectronics co uk Remote Time Delay Switch 3 wire version energy saving controls Issue 1 0...

Page 2: ...g energy by switching it off automatically when not required after an adjustable period At any time the activation period may be extended with a further brief contact closure or cancelled by an extend...

Page 3: ...for inline connection with the load to be switched no neutral required such as to replace a standard light switch A minimum load of 20W per switch unit applies a load capacitor is required for smaller...

Page 4: ...observed with relevance to the particular installation Referring to the steps under Installation connect the remote input s as follows TDS S Use 3 core mains rated cable and connect as shown below Fi...

Page 5: ...ter a contact closure trigger 3 Connect the wiring as shown in Figure 2 or in any suitably appropriate form Supply connections L N Use appropriate mains cable to power the unit If the load is also pow...

Page 6: ...RTDS3 6 Operation The diagram below illustrates the sequence of operation for the unit Key Sequence of Operation...

Page 7: ...on a Unit is not powered Ensure the unit is correctly connected to an active mains supply b Load is not connected correctly Ensure the load is connected appropriately The relay output is volt free so...

Page 8: ...onics co uk or call 0333 666 1176 Alternatively email techsupport mselectronics co uk Additional copies of this product guide can be downloaded from our website Product Warranty MS Electronics guarant...

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