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mselectronics.co.uk
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.
!