Carrier CCU Regelungshandbuch Seite 46

2 - COMPOSITION
TERMINAL
J6
(SL)
J7
(SL)
J8
J9
J10
J14
J15
(SA)
COM SWITCH
- COM 1: line termination resistance on CMS link (see section 13)
- COM 2: BUS polarisation on master/slave link (see section 12)
46
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
1 RS485 A or + (Link between controllers for master/slave function)
2 RS485 B or - (Link between controllers for master/slave function)
3
1
2
3
1
2
3
4
1
2
3
4
Fan differential pressure sensor (0-10 V) or target temperature sensor (2-10 V) or percentage required
5
6
CCU Controller
Condensation unit 1 control
Refrigerating stage no. 1 common terminal
Condensation unit 2 control
Refrigerating stage no. 2 common terminal
Control of electric heater stage 1
Control of electric heater stage 2
Electric heater control common terminal
Supply air fan control
Not used
Fan control common terminal
24 V AC power supply
24 V AC power supply
0 V
0 V
RS485 A or + (Link with CMS or gateway)
RS485 B or - (Link with CMS or gateway)
0 V
+ 12 V
RS485 A or + (Link with CPY humidifier and/or FMA)
RS485 B or - (Link with CPY humidifier and/or FMA)
0 V
0 V
Outdoor temperature sensor (10 K Ω)
Outdoor relative humidity sensor (0- 10 V)
Raised floor differential pressure monitoring sensor (0- 10 V)
on external signal (2-10 V)
5 V