Essential And Non-Essential Supplies - Honeywell Ex-Or CDH4U5 Installation And Commissioning Instructions

b) Essential and Non-Essential Supplies
ESSENTIAL
SUPPLY
L
N
As shown in the above diagram, the unit may also be wired with two different supplies where one of the supplies is guaranteed to be available referred to as
essential, while the other is referred as non-essential supply. The unit is recommended to be powered using the essential supply. As shown in the diagram, one
or more channels may be powered from either of the supplies.
CH1
E
L
Ballast
N
D
D
CH1
E
L
Ballast
N
D
D
MAINS INPUT
D D
N L
+ 1 - + 2 - + 3 - + 4 -
DIMMING CHANNELS
SELV SWITCH INPUTS
B COM A B COM A
5 4
CH2
E
L
Ballast
N
D
D
Not
used
N1 L1 VOLT FREE CHANNELS ML
CH1 CH2
1 - 1
COMMS BUS
CH4
CH3
Dimming
CH2
5
B COM A B COM A B COM A
3 2 1
-3-
NON-ESSENTIAL
SUPPLY
Earth not
L
shown for
clarity
N
CH3
E
L
N
D
D
CH4
E
L
N
D
D
VOLT FREE CHANNELS N2 L2
CH3 CH4
2 - 2
DETECTOR PORTS
4 3 2 1
Ballast
Ballast
W5055E