Application guidelines
29
FRCC.PC.014.A4.22
Wiring connections
230 V
～
2 A max
R
E
LA
Y
1
L1
91
L1
W
98
T3
L2
92
L2
V
97
T2
L3
93
L3
U
96
T1
95
PE
PE
99
39 39 Ana out COM
42 42 Ana out +
50 50 Ana in +10 V
NC
03
53 53 Ana in 0 ± 10 V
NO
02
54 54 Ana in 0 ± 10 V
COM
01
55 55 Ana in COM
NC
06
NO
05
12 12 +24V
COM
04
13 13 +24V
18 18 Dig in
19 19 Dig in
27 27 Dig in/out
29 29 Dig in/out
32 32 Dig in
N- RS485 69 69
33 33 Dig in
P+ RS485 68 68
20 20 Dig in COM
COM RS485 61 61
37 37 Dig in
R
E
LA
Y
2
C
D
S3
02
Legends:
Ana: Analogue
Dig: Digital
in: Input
out: Output
COM: Common
NC: Normally-closed
NO: Normally-open
Open loop
Process loop
91, 92, 93
3 Phase mains input
X
X
95
Earth
X
X
39, 42
Analogue output
-
-
50
Analogue input
-
-
53
PLC+ (0 to 10 V)
X
-
54
Sensor -
-
X
55
PLC-
X
-
12
HP/LP switch
X
X
12
External On/Off (NO)
X
X
13
Factory bridged to 37
X
X
13
-
X
18
External On/Off (NO)
X
X
19
Digital input
-
-
27
HP/LP switch (NC) / safety devices
X
X
29
Digital input/output
-
-
32, 33
Digital input
-
-
20
Digital input Common
-
-
37
Factory bridged to 13
X
X
98
To compressor terminal T3
X
X
97
To compressor terminal T2
X
X
96
To compressor terminal T1
X
X
99
To compressor earth connection
X
X
02, 01
Relay 1 to oil solenoid valve
X
X
06, 05, 04
Relay 2
-
-
69, 68
RS485 Bus
-
-
61
RS485 Bus Common
-
-
- : Optional connection
X : Mandatory connection
The CDS302 frequency converter is factory pre-
set with parameters for the open loop control
principle. The process loop control principle
can be selected by changing parameters in the
«Quick menu».
Open loop: preset on input 53
0 - 10 V control
Frequency converter in slave mode
Process loop: preset on input 54
4 - 20 mA control
Frequency converter under own PID controller
Electrical data, connections and wiring
