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10
Determine the connection points
All connections must be programmed with module and point, so
in principle it does not matter where the connections are made, as
long as it takes place on a correct type of input or output.
• The controller is the first module, the next one is 2, etc.
• A point is the two or three terminals belonging to an input or
output (e.g. two terminals for a sensor and three terminals for a
relay).
The preparation of the connection diagram and the subsequent
programming (configuration) should take place at the present
time. It is most easily accomplished by filling in the connection
survey for the relevant modules.
Principle:
Name
On module
fx Compressor 1
fx Compressor 2
fx Alarm relay
fx Main switch
fx P0
The connection survey from the controller and any extension
modules are uploaded from the paragraph "Module survey. E.g.
controller module:
Example continued
Signal
Shr Receiver temperature
Suction gas temperature - Ss MT
Discharge temperature - Sd MT
Suction pressure - P0 MT
Condensing pressure - Pc MT
Suction gas temperature - Ss LT
Discharge temperature - Sd LT
Suction pressure - P0 LT
Compressor 1 MT
Compressor 2 MT
Compressor 3 MT
Compressor 1 LT
Compressor 2 LT
Valve and circulation pump HR
Fan motors
Hot gas dump
AK-PC 772A
On Point
Function
x
x
Close
x
x
Close
x
x
NC
x
x
Close
x
x
AKS 32R 1-6 bar
Module
Point
Terminal
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
6 (AI 6)
11 - 12
7 (AI 7)
13 - 14
8 (AI 8)
19 - 20
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 - 40 - 41
17 (DO6)
42 - 43 - 44
18 (DO7)
45 - 46 - 47
19 (DO8)
48 - 49 - 50
24
-
25
-
Capacity controller RS8HF102 © Danfoss 2017-07
Note
The safety relays should not be fitted onto a module
with override changeovers, as they can be put out of
operation by an incorrect setting.
- Columns 1, 2, 3 and 5 are used for the programming.
- Columns 2 and 4 are used for the connection diagram.
Signal type /
Signal
Active at
Compressor 1 MT Gen. Safety
Compressor 2 MT Gen. Safety
Pt 1000
Compressor 3 MT Gen. Safety
All compressors common safety
Pt 1000
MT
Pt 1000
Compressor 1 LT Gen. Safety
AKS 2050-59
Compressor 2 LT Gen. Safety
AKS 2050-159
All compressors common safety LT
Pt 1000
Stepper signal to by-pass valve,
Pt 1000
CCM
AKS 2050-59
ON
Stepper signal to high pressure
ON
valve, CCMT
ON
ON
ON
ON
ON
Signal
ON
Outdoor temperature Sc3
Temp. gas cooler outlet Sgc
Gas cooler pressure Pgc
Receiver pressure Prec
Speed control, compressor MT
Speed control, compressor LT
Speed control, compressor, EC
Module
Point
Mind the numbering.
The right-hand part of the
controller module may look like
a separate module. But it isn't.
Module
Point/Step
Terminal
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
6 (AI 6)
11 - 12
7 (AI 7)
13 - 14
2
8 (AI 8)
15 - 16
9 (step 1)
25 - 26 - 27 - 28 CCM (ETS)
10 (step 2)
29 - 30 - 31 - 32
11 (step 3)
33 - 34 - 35 - 36 CCMT
12 (step 4)
37 - 38 - 39 - 40
Module
Point
Terminal
1 (AI 1)
1 - 2
2 (AI 2)
3 - 4
3 (AI 3)
5 - 6
4 (AI 4)
7 - 8
3
5 (AO 1)
9 - 10
6 (AO 2)
11 - 12
7 (AO 3)
13 - 14
8 (AO 4)
15 - 16
Signal type
Open
Open
Open
Open
Open
Open
Open
Signal type
Pt 1000
Pt 1000
AKS 2050-159
AKS 2050-159
0 - 10 V
0 - 10 V
0 - 10 V
Continued next page
37
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