Danfoss AK-SM 720 Installation guide

-20°< t

-0°F < t
0 - 95% RH, non condensing
IP10 / VBG4
UL: E166834

amb

amb

 < 55°C

 < 130°F

Instructions

System manager
AK-SM 720

AK-SM 720
See manual: RS8EC

Data communication
See literature : RC8AC

AI x 11
DO x 8

Supply voltage:

Transformer
Class II

The 24V must not be 
shared by other 
controllers or units

The 24 V input must not 
have earth connection

Max. 10 V

Max. 230 V

Keep the safety distance
Low and high voltage must 
not be connected to the 
same output group

RI8LL102    03-2007

U

min

I 

max

 : 48 V a.c.

.: 0.5 A

SPDT:
AC-1: 4A (ohmic)
AC-15: 3A (Inductive)

Point

Relay or 
AKV coil 
110/230 V

Terminal 15:  12 V

 Terminal 16:  5 V

Terminal 27:  12 V

 Terminal 28:  5 V

Terminal 

17, 18, 29, 30: 

S (sensor)

Pt 1000 ohm/0°C

P (pressure)

        AKS 32R 

       AKS 32

U (voltage)

On/O

DO

AO

The Product contains electrical components 
And may not be disposed together with domestic waste.
Equipment must be separate collected with Electrical and Elec­tronic waste. According to Local and currently valid legislation.

Signal

Signal
type

Address

S1
S2...
Saux1

Pt 1000
Saux2
SSA
SdA

(System manager)

P0A
P0B
PcA
PcB

AKS 32R

-1 - xx bar

AKS 32

-1 - zz bar

Signal Signal type /

Active at

Module Point Terminals

1 (AI 1) 1 - 2

2 (AI 2) 3 - 4

3 (AI 3) 5 - 6

4 (AI 4) 7 - 8

5 (AI 5) 9 - 10

...

0 - 10 V

0 - 5 V

6 (AI 6) 11 - 12

7 (AI 7) 13 - 14

8 (AI 8) 19 - 20

Ext. 
Main 
switch

Day/
Night

Door

Comp 1

AKV

Comp 2

Fan 1

Alarm 

Active at:

Closed

/

Open

Active at:

ON

/

OFF

9 (AI 9) 21 - 22

10 (AI 10) 23 - 24

11 (AI 11) 25 - 26

1

12 (DO 1) 31 - 32

13 (DO 2) 33 - 34

14 (DO 3) 35 - 36

15 (DO 4) 37 - 38

16 (DO 5) 39 - 41

17 (DO6) 42 - 44

18 (DO7) 45 - 47

19 (DO8) 48 - 50

AO

0-10 V

24 (AO1) -

25 (AO2) -

DE-BD

2  Instructions  RI8LL102  ©  Danfoss  03/2007     AK-SM 720 System manager