DIMMING CHANNELS
MAINS INPUT
N
L
N1
4
3
2
L
E
N
Electrical Connections
The connections to this equipment should be made only by a suitably
qualified person and in accordance with the current wiring regulations.
A means of disconnection must be incorporated in the fixed mains
wiring to this box in accordance with the current wiring regulations.
All the connections should be routed ensuring adequate strain relief on the
cable before termination to the unit’s pluggable connectors.
CAUTION: DO NOT CONNECT MAINS TO THE MLS BUS OR DIMMING
OUTPUTS.
Connecting the Luminaires
Variants of the CDH4U5 are provided to control DSI, DALI and 1-10V ballasts. (See Part Numbers section for more details.)
Note: Dimming ballast types CANNOT BE MIXED on a single CDH4U5.
The CDH4U5 is equipped with 4 two-wire pluggable terminals for dimming outputs, 2 three-wire and 2 two-wire pluggable terminals for volt-free outputs.
The CDH4U5 has provision to connect more than one supply from different phases in three different scenarios: a) Single Supply, b) Essential and non-essential
supplies and c) Two supplies equally likely to drop out .
Aux 3
RELAY OUTPUTS
a) Single Supply
Introduction
The CDH4U5 is an intelligent LCM providing connections for multiple
luminaires*, up to 5 presence detectors and up to 5 SELV inputs. The product
simplifies installation whilst providing an intelligent lighting control system.
Provision is made for 4 volt-free power outputs rated for 415V isolation.
Additionally, the unit features a switched output for Maintained Live to allow
initiation of Emergency Lighting Test. The CDH4U5 has the ability to operate
from dual supplies with the capability to modify its operating behaviour when
failure is detected on one of the supplies. This feature is described in greater
detail in application note AN4027.
*Note: Refer to Technical Data section to find out maximum allowable number
of luminaires.
Fixing
The CDH4U5 should be mounted in an enclosure with a DIN-rail.
Consideration should be given to access for installation and maintenance
when selecting the enclosure and location. The external enclosure DIN-rail
should comply with EN 60715.
Ballast
N
L
E
D
D
Ballast
N
L
E
D
D
Ballast
Ballast
Ballast
N
N
N
L
L
L
E
E
E
D
D
D
D
D
D
1
DETECTOR PORTS
2
3
4
5
B COM A
B COM A
B COM A
B COM A
B COM A
1
2
3
4
5
SELV SWITCH INPUTS
VOLT FREE CHANNELS
1 - 1 2 - 2
COMMS BUS
+ 4 -
+ 3 -
+ 2 -
+ 1 -
DIMMING CHANNELS
N
L
MAINS INPUT
VOLT FREE CHANNELS
N2 L2
N1 L1
CH2
ML
CH3
CH1
CH4
D
D
CH4
CH3
CH2
CH1
CH1
CH2
CH3
CH4
L
N
Do Not
Connect
Do Not
Connect
Earth not shown
for clarity
Dimming
Emergency
Luminaire
Maintained
Live
As shown above, the unit can be powered from a single supply; one or more luminaires may be connected to each channel.
-2-
Dimming
Dimming
Dimming
Dimming
Note: + and -
relevant for
analogue
versions only.
Dimming