Instructions
2 | AN233086441027en-000201
© Danfoss | DCS (CC) | 2019.03
Oil level switch assembly
Electrical connections / Wiring
Install the screw-in optical part on oil level
switch port. (Factory preset for manifold version
VZH compressor.)
3
1
4
2
1: Power supply wire
2: Power supply wire
3: Output wire
4: Not used
Install the electrical part on optical part. Make
sure the cable outlet downside vertically
See at the correct diagram corresponding
to different power supply models for proper
wiring
1
OVDC
24VDC
2
3
Sensor
External
Load / Relay
24VDC MODEL
1
OVAC
24VAC
2
3
Sensor
External
Load / Relay
24VAC MODEL
1
N
L
2
3
Sensor
External
Load / Relay
230VAC MODEL
R
E
LA
Y
1
L1
91
L1
U
96
T1/U
L2
92
L2
V
97
T2/V
L3
93
L3
W
98
T3/W
95
PE
PE
99
45
Ana out or Dig out
42
Ana out or Dig out
50
out +10 V
NC
53
Ana in
NO
02
54
Ana in
COM
01
55
Ana in/out COM
NC
06
NO
05
12
+24V
COM
04
18
Dig in
19
Dig in
27
Dig in/out
29
Dig in/out
20
Dig in COM
N- RS485
69
P+ RS485
68
COM RS485
61
R
E
LA
Y
2
C
D
S8
03
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 phases mains input
x
x
95
Earth
x
x
42,45
0/4-20 mA Analague Output or Digital Output
-
-
50
+10V DC Output
-
-
53
0-10V or 4-20mA Analague Input
x
-
54
0-10V or 4-20mA Analague Input
-
x
55
Com Analague In/Out
x
-
12
External On/Off(NO)
x
x
18
External On/Off(NO)
x
x
19
Digital Input
-
-
27
Safety Device
x
x
29
Digital Input
-
-
20
Com Digital Input
-
-
98
To Compressor T3
x
x
97
To Compressor T2
x
x
96
To Compressor T1
x
x
99
Earth
x
x
03,02,01
Relay 1
-
-
06,05,04
Relay 2
-
-
69,68
RS485 Bus
-
-
61
RS485 Bus Com
-
-
-: Optional connection
X: Mandatory connection
The CDS803 frequency converter is factory preset 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
Basic connections for VZH028-044 drives
