sauter NRT405F901 Instructions page 4

B
Figure 5: Connection diagram
B
Figure 6: Connection diagram
40 DI
L 10
41 AGnd
11
°C
42 AI
N 12
°C
43 UI
N 13
44 AGnd
DO1 20
50 DO2 21
51
DO3 22
52
30
53
54 DO4 31
B
CDO45 32
DO5 33
Figure 7: Connection diagram with electric heater
40 DI
L 10
41 AGnd
11
°C
42 AI
N 12
°C
43 UI
N 13
44 AGnd
DO1 20
I
II
50 DO2 21
III
51
DO3 22
52
53 30
54 DO4 31
B
CDO45 32
DO5 33
Figure 8: Connection diagram with a solid state relay for electric heater
Connection of different actuators
When connecting thermal actuators, DO4 is used for heating actuators
and DO5 for cooling actuators. If the installation is a 2-pipe installation
and the change-over function is used, the actuator should be connected
to DO4.
When connecting 3-point actuators, DO4 is used for increase signal and
DO5 for decrease signal, even when the change-over function is used.
NRT405F901
L
10 L
230 V AC
N
11 -
12 N
13 N
20 DO1
I
II
M
III
21 DO2
22 DO3
ELECTRIC
HEATER
30 -
31 DO4
32 CDO45
L
230 V AC
N
33 DO5
40 DI
M
41 Agnd
Solid state relay 42 AI
1 2 U 3 4 U I I
43 UI
ELECTRIC HEATER
44 Agnd
50 Agnd
51 -
52 -
53 A
54 B
*The sum of the current through DO1-DO3 is protected by a fuse
230 V AC Line Power supply
Not connected
230 V AC Neutral Power supply (internally con-
nected to terminal 13)
Fan-coil common / Common fan-coil connec-
230 V AC Neutral tor (internally connected to
terminal 12)
Fan-coil output 1 Relay, 230 V AC*, 3 A
for fan control
Fan-coil output 2 Relay, 230 V AC*, 3 A
for fan control
Fan-coil output 3 Relay, 230 V AC*, 3 A
for fan control
Not connected
Digital output 4 for Digital output. 230 V AC, max
heating/cooling 300 mA. Max 2 A during 20
or opening with ms.
3-point actuator
Common DO4 & 5 Common connection for
digital outputs 4 and 5
Digital output 5 for Digital output. 230 V AC, max
cooling or clos- 300 mA. Max 2 A during
ing with 3-point 20 ms.
actuator. Heating/
cooling when
electrical heater is
configured
Digital input Potential-free window contact
or occupancy contact. Con-
figurable for NO/NC.
Analogue ground
Analogue input External PT1000 instead of
the internal NTC
Universal input Change-over input. Potential-
free switch (configurable for
NO/NC) or PT1000.
Analogue ground
Analogue ground
Not connected
Not connected
RS485 communication A
RS485 communication B
4