Danfoss VSH Serie Instrucciones página 4

Instructions
- Depending on the frequency converter
version, the physical position of individual
connectors may differ from below diagram.
- Always make sure that the compressor termi-
nals T1, T2, T3 are connected to the frequency
converter terminals 96, 97, 98 respectively.
- The compressor motor cable must be shielded
L1 91 L1
L2 92 L2
L3 93 L3
95 PE
39 39 Ana out COM
42 42 Ana out +
50 50 Ana in +10 V
53 53 Ana in 0 ± 10 V
54 54 Ana in 0 ± 10 V
55 55 Ana in COM
12 12 +24V
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
33 33 Dig in
20 20 Dig in COM
37 37 Dig in
91, 92, 93: 3 Phase mains input
95: Earth
39, 42 Analogue output
50: Analogue input
53: PLC+ (0 to 10 V)
54: Sensor -
55: PLC-
12: HP/LP switch
12: External On/Off (NO)
13: Factory bridged to 37
13: Sensor +
18: External On/Off (NO)
19: Digital input
27: HP/LP switch (NC) / safety devices
29: Digital input/output
32, 33 Digital input
20: Digital input Common
37: Factory bridged to 13
98: To compressor terminal T3
97: To compressor terminal T2
96: To compressor terminal T1
99: To compressor earth connection
02, 01: Relay 1 to oil solenoid valve
06, 05, 04: Relay 2
69, 68: RS485 Bus
61: RS485 Bus Common
- Optional connection
4
Basic connections
and the armoured part must be connected to
ground on both cable ends; at the side of the
compressor and at the side of the frequency
converter.
- Use an EMC cable gland for cable installation and
perfect grounding; The metallic terminal box of
the compressor has a paint-free surface around
W
PE
NC
NO
COM
NC
NO
COM
N- RS485 69 69
P+ RS485 68 68
COM RS485 61 61
Open loop
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X : Mandatory connection
FRCC.EI.005.A3.02 © Danfoss Commercial Compressors 09/10
98 T3
V 97 T2
U 96 T1
99
03
230 V
02
～
01
2 A max
06
05
04
Process loop
X
X
- -
- -
-
- X
-
X
X
X
- X
X
- -
X
- -
- -
- -
X
X
X
X
X
X
- -
- -
- -
the connection hole for better conductivity.
- A low pressure safety switch is mandatory
to avoid compressor vacuum operation.
- At start-up, verfiy that the compressor rotates
in the right direction and pumps.
Legends:
Ana: Analogue
Dig: Digital
in: Input
out: Output
COM: Common
NC: Normally-closed
NO: Normally-open
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:
0 - 10 V control
Frequency converter in slave mode
Process loop:
4 - 20 mA control
Frequency converter under own PID controller