The diagram above shows Maintained Live generated from the internal link of
the mains supplied to the unit. Alternatively, the external shorting link can be
removed and an external supply (from the same phase) can be connected to
create a Maintained Output.
Connecting Presence Detectors
The following SELV detectors are designed to interface to the CDH8U5:
MLS2500CDR
Corner-mount Microwave presence detector with
photocell, semi-flush mounted. Available with surface
mount (SM suffix).
MLS2401CDR
360° Microwave presence detector with photocell, flush
mounted. Available in surface mount version (SM
suffix).
MLS3000CDRF
360° PIR presence detector with photocell, flush
mounted. Available in surface mount version (SM
suffix).
MLS3003CDRF
360° PIR presence detector with photocell and tilting
lens, flush mounted. Available in surface mount
version (SM suffix).
MLS3003CDRMBF Mid-Bay 360° PIR presence detector with photocell and
tilting lens, flush mounted. Available in surface mount
version (SM suffix).
MLS3003CDRHBF Hi-Bay 360° PIR presence detector with photocell and
tilting lens, flush mounted. Available in surface mount
version (SM suffix).
MLSM2002CDR
Controller for a 360° PIR detector with photocell. Used
with the DHS OR DHW mini-head to form an integral
luminaire-mounted unit.
Each connects to the CDH8U5 by means of an Ethernet-style RJ45
connector terminated patch lead which are available ready-made in 3m, 5m
and 10m lengths. Up to five detectors may be connected to a CDH8U5.
Positioning Presence Detectors
For information on installing and positioning detectors, please refer to the
installation instructions provided with the particular detector.
Note that if the SELV status of any one of the switches
is compromised by reason of inadequate insulation or
segregation of the cabling, then the SELV status of all
other switches AND OF THE DETECTORS will also
be compromised.
Connecting Switches
The CDH8U5 is equipped with SELV switch inputs which will typically be two
way, centre off, momentary rockers,(e.g. the MK K4900 range). The logical
function of a switch can be configured from a wide range of options and its
action can be associated with any combination of channels. The switch
connection consists of a 3-pole pluggable terminal block comprising a common
and two returns from normally open contacts. Six plugs are provided with each
CDH8U5. The plug type is common with the Aux output channel. Additional
plugs can be ordered using the code CDHIP (5 pieces per pack).
The recommended cable for use with the SELV switches is 3-core 3183Y
Stranded PVC Mains Power Cable H05VV-F, 0.75 mm² CSA 6 A 100m, 300 V,
500 V.
The maximum allowable cable length between the switch mechanism
and the CDH8U5 terminal block is 100m.
Three separate single wires should not be used.
Connecting Switches with High Density Connector
The CDH8U5 also has provision to connect 5 additional SELV switch inputs in
order to meet the requirement of additional inputs. Unlike the 3-pole connector,
this provides two terminals A&B for each of the 5 inputs. The high density input
plug (not supplied) can be ordered using the code CDHHDIP.
Note: For the switches on the High Density Connector (SW 8-12) use any of the
‘C’ common connectors from switches 1-5.
For HD switches 8-12, use any of the ‘COM’ connections from switch inputs 1-5.
Connecting SELV Output, Aux 1
The CDH8U5 has a single SELV change-over output for signalling purposes
only. This can be used to signal an external system e.g. BMS. Connection is
made via a 3-pole pluggable terminal block (supplied) of the same type used for
SELV inputs 1-5 (CDHIP).
Note: The external voltage connected to Aux 1 must never exceed 24V
AC/DC. The SELV Output must be used only for signalling purposes.
Maximum current shall not exceed 1A.
B Com A
-3-
Live in from
same Phase
Switched Live
Internal Link
Maintained
Output
External
shorting
Links
Wiring for HD SELV Input:
External BMS
Signal In
24V AC/DC