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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/n 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. A volt-free relay output is provided, 

which can be used to switch a load on the same mains supply (by connecting across 

from 

L

 to 

LIVE IN

, making 

LIVE OUT

 a switched live), or to provide a contact closure to 

a separate load or control signal. There is no minimum load requirement.

Also available:

 

RTDS2

 (2-wire version) – Suitable 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 loads.

• 

Maximum load:

 The maximum load rating is 

16A (4000W)

, however for high inrush 

loads (such as most types of lighting), a lower limit applies: see 

Technical Specification

.

• 

Remote Input:

 The unit is operated by momentary contact closures across the 

R+

/

R-

 

terminals (see Figure 2) according to the operating sequence (see 

Operation

). At least 

one appropriate switch or relay must be connected in accordance with the 

Remote Input 

Wiring

 section. All wiring must be rated for mains voltages, and relay operation must 

conform to the specified timings (see 

Technical Specification

). 

 

The remote input connections are referenced to the mains supply of the unit and are therefore 

not

 

safe to touch when the unit is powered. All switches and cables must be rated for mains voltages.

!

Содержание RTDS3

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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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