MS Electronics TDS3 Manuale utente
Issue 3.0
today, tomorrow and in the future
TDS3
TDS3-L
Product Guide
Time Delay Switches
3-wire versions
TDS3 Standard
TDS3-L with LED indicator
2TDS3 · TDS3-L
Product Overview
The TDS3 Time Delay Switch provides med switching for lighng, heang, air condioning and
venlaon equipment. The unit features a vandal-resistant touch-sensive buon, oering easy
acvaon of the connected load whilst saving energy by switching it o automacally when not
required (aer an adjustable period). At any me, the acvaon period may be extended with a
further brief touch, or cancelled by holding momentarily. The unit is available with dierent me
delay ranges (see Technical Specicaon).
•The TDS3 is a standard me delay switch.
•The TDS3-L has an illuminated buon to aid locaon of the unit in the dark.
The unit is simple to install and ts a standard single-gang UK paress or back box (20mm min.
depth). Ideal applicaons include small booths or rooms, workshops, entrance halls, staircases,
toilets, store cupboards, hired sports courts and rooms plus many more.
Figure 1a TDS3 Figure 1b TDS3-L
Figure 2 Typical wiring example and dimensions (in millimetres)
mselectronics.co.uk 3
Electrical Requirements
Before aempng 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) connecon: The unit requires a permanent live/neutral
connecon, and as such is not suitable for replacing an exisng light switch with no neutral
conductor at the switch locaon. A volt-free relay output is provided, which can be used to
switch a load on the same mains supply (by connecng 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: TDS2 / TDS2-L (2-wire versions) – Suitable for ‘inline’ connecon 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 rang is 16A (4000W), however for high inrush loads (such
as most types of lighng), a lower limit applies: see Technical Specicaon.
Installaon
1. Prepare a single-gang paress or back box as necessary.
2. Rotate the Timeout thumbwheel (referring to the accompanying label) to set the period of me
for which the load should remain switched on aer the buon is touched.
3. Connect the wiring as shown in Figure 2 (or in any suitably appropriate form).
−Supply connecons (L, N): Use appropriate mains cable to power the unit. If the load is also
powered via this wiring, ensure the current rang is adequate. Otherwise (i.e. if the output is
independently powered), low-current cable may be used.
−Load connecons (LIVE IN, LIVE OUT): Use cable rated for the load current and voltage.
−Slave switch connecons (V+, R+, R-) if required: Low-current cable may be used but must
be rated for mains voltages. See Using Mulple Switches for wiring details and slave switch
opons.
4. Fix the unit into posion with the two screws and caps supplied.
Addional Guidelines
•The screw caps may be removed at a later date with the aid of an adhesive puy such as Blu-
Tack.
All electrical installaon and maintenance must be carried out by a competent person. If in doubt,
consult a qualied electrician. Any new wiring must be carried out by qualied personnel in
accordance with the current edion of the IET Wiring Regulaons (BS7671).
Ensure the electrical supply is isolated before making any connecons or adjustments.
4TDS3 · TDS3-L
Operaon
The diagram below illustrates the sequence of operaon for the unit.
Operaon Notes
•TDS3-L only In the ‘OFF’ state, the LED is lit to facilitate locaon of the unit in the dark.
Key
Sequence of
Operation
mselectronics.co.uk 5
Using Mulple Switches
To allow the connected load to be controlled from more than one locaon, mulple switches may
be connected, either in parallel, or using lower cost slave switches connected to a single master
switch.
Example 1: Parallel Wiring
Figure 3 illustrates a typical wiring arrangement using two TDS3 units; Figure 4 represents the same
conguraon as applied to a typical ceiling rose lighng circuit. This method can typically reuse pre-
exisng wiring from a 2-way switching installaon where 3-core cable has been run between the
switch locaons.
Each unit operates its own ming cycle, but the load is shared. When either unit (or both) is
acvated by its respecve touch-sensive buon, the load will switch on. Once both units have
med out, the load will switch o. Note that when holding the buon to cancel the meout, the
load will remain powered if the other unit is sll in the ‘ON’ state. For full control from any switch
locaon, see Example 2.
Figure 3 Typical wiring schemac for two units
Figure 4 Typical ceiling rose plan
The following wiring examples are intended only as recommendaons. Proper wiring pracce must be
observed with relevance to the parcular installaon.
6TDS3 · TDS3-L
Example 2: Master with Slave Units
The remote interface feature oers the opon of lower cost 2-way or mul-way switching by
connecng up to ve slave switches to a single TDS3 master unit. Unlike parallel wiring (Example 1),
this method retains full control from any switch locaon, and does not increase the minimum load
requirement. The master unit controls the ming cycle and switches the load, and any of the slave
switches will funcon idencally to that on the master unit.
Each slave switch may be either a TDS-S slave unit (which provides an idencal touchsensive
buon) or an ordinary normally-open mechanical switch (such as a pushbuon or retracve rocker).
Referring to the steps under Installaon, connect as follows.
•TDS-S: Use 3-core mains-rated cable and connect as shown below. Figure 5 illustrates a typical
wiring example using two TDS-S slave units; Figure 6 represents the same conguraon as
applied to a typical ceiling rose lighng circuit.
•Other switches: Use 2-core mains-rated cable and connect to the R+ and R- terminals only
(polarity does not maer); do not use the V+ terminal.
Figure 6 Typical ceiling rose plan using two TDS-S slave units
Figure 5
Typical wiring schemac using two TDS-S slave units
The slave switch connecons 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.
mselectronics.co.uk 7
Fault Finding
Load will not switch on
a) Unit is not powered
•Ensure the unit is correctly connected to an acve 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 me delay switch.
Load switches on, but does not switch o
•Ensure the set period has elapsed since the buon was last touched.
Technical Specicaon
Power supply
220V - 240V AC 50Hz (live/neutral)
Output switch type
Volt-free SPST (normally open) relay
Output switch rang
16A, 250V AC (resisve)
Maximum lighng load
Incandescent: 12A (3000W)
Fluorescent: 10A (2500W)
Compact Fluorescent: 10A (2500W)
Time delay selecon
3 seconds to 30 minutes or
6 seconds to 60 minutes or
12 seconds to 120 minutes
Mounng hardware
20mm (min.) single-gang UK paress box
Operang temperature
-10°C to +40°C
Guarantee
3 Years
Weight
87g
Dimensions
86mm x 86mm x 27mm
Ensure the electrical supply to the unit is isolated before making any adjustments.
IMPORTANT INSTALLATION NOTICE
The installaon of this product should be carried out in accordance with the latest IEE
wiring regulaons and all wiring completed by a qualied electrician.
Technical Support
For further help or informaon on this and the other products in the MS Electronics range
visit www.mselectronics.co.uk or call 0333 666 1176.
Alternavely, email techsupport@mselectronics.co.uk
Addional copies of this product guide can be downloaded from our website.
Product Warranty
MS Electronics guarantees all their products against manufacturing defects for
3 years from the purchase date. If your product is found to be faulty, MS Electronics will,
at their discreon, repair or replace the product free of charge.
Note
Any modicaon 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 e: info@mselectronics.co.uk
t: 0333 666 1176/01708 448566
MS Electronics reserves the right to alter or change this specicaon without prior noce.
Questo manuale è adatto per i seguenti modelli
1
Indice
Altri manuali MS Electronics Interruttore
