Sauter flexotron®800
ventilation
Installation and wiring
P100012082
22
3.4
Wiring diagram RDT828
(Configuration 828 Cascade & CO
2
)
(See also picture of the position of the terminals on page 14)
-
LS
Power supply 24 V AC ±15%. 50/60 Hz,
or 24 V DC
1
D+
RS485 Modbus (not with
web (TCP/IP) models)
-
MM
2
D-
-
Earth conductor
3
C
-
+24 V +24 V DC. Reference point for digital inputs DI
4
E
42
LS
Reference point for digital outputs DO
-
-
-
41
DO1
Heating coil pump
-
-
40
DO2
Supply air fan variable-frequency drive enabled
-
-
39
DO3
Return air fan variable-frequency drive enabled
38
DO4
Collective alarm
9
DI1
External OFF switch
37
DO5
Cooling demand
10
DI2
Frost-protection facility
36
DO6
Not used
11
DI3
Supply air fan on
35
DO7
Not used
12
DI4
Anti-icing function
13
DI5
Heating coil pump on
34
Reference potential for analogue inputs AI
14
DI6
Filter monitor
33
AI1
Outside temperature
15
DI7
Not used
32
AI2
Supply air temperature
16
DI8
Return air fan on
31
Reference potential for analogue inputs AI
30
AI3
Frost-protection sensor
17
Reference potential for analogue
outputs AO
29
AI4
Return air temperature
18
AO1
Y1 actuator for heater
19
AO2
Y2 actuator for HRec
28
Reference potential for universal inputs UI
20
AO3
Y3 actuator for cooler
27
UI1
CO
2
sensor
21
AO4
Supply air fan
26
UI2
Setpoint for room temperature
22
AO5
Return air fan
25
Reference potential for universal inputs UI
24
UI3
Not used
23
UI4
Not used