Specifications

10
ViSSion® 20/20 Retrofi t Instructions • 35391SCRF
Step 2. An auxiliary contact from compressor motor starter is required. Connect isolated contact to terminal
blocks 1 and 31.
19
18
17
16
14
15
13
9
12
11
10
8
7
6
4
5
3
2
1
115VAC / 60HZ
DOOR
GND LUG
1A
DC POWER
SUPPLIES
N1
CONTROL POWER
DISCONNECT AND BRANCH CIRCUIT PROTECTION TO BE
SIZED PER THE NATIONAL ELECTRIC CODE.
INCOMING POWER SUPPLIED FROM REMOTE CUSTOMER
SUPPLIED UL LISTED FUSED DISCONNECT OR BREAKER
15 AMPS
CB 1
SW 1
E-STOP
LINE
LOAD
EMI FILTER
TO CPU BASEBOARD
OUTPUTS
13
14
16
15
OIL SEPARATOR
HEATER START
74, 78
17
18
HHH
OPTIONAL TRIP
INDICATION
OUTPUT CAN ALSO BE USED WITH AN INDICATING LIGHT, HORN,
OR PLC INPUT (CUSTOMER SUPPLIED)
GND
DIGITAL OUTPUT: BOARD #1
PLUG X1
DIGITAL OUTPUT: BOARD #1
PLUG X2
INPUT
1C
2
OUTPUT
+5VDC
+12VDC
5/12 COM
GND
OUTPUTS
N
N
1B1
GND
RD-
35-A
CRH
A1 A2
1
1
N
N
N
N
N
H
5
6
7
8
H
4
3
2
1
RS-
50-24
OUTPUT
INPUT
+24VDC
24 COM
COMPRESSOR
STARTER
70
OIL PUMP STARTER
73
50
49
48
47
46
44
45
43
42
41
40
32
33
35
34
36
37
38
39
51
52
53
54
FROM LINE 31 FROM LINE 31
31
32
33
34
AUX MS1
HL
SHUTDOWN AUX
COMPRESSOR MOTOR
STARTER AUXILIARY
CONTACT
HIGH LEVEL SHUTDOWN
OPTIONAL OIL LEVEL FLOAT
SWITCH #1
OPTIONAL OIL LEVEL FLOAT
SWITCH #2
OPTIONAL REMOTE
CAPAPCITY DECREASE
OPTIONAL REMOTE
CAPACITY INCREASE
OPTIONAL REMOTE
START/STOP
OPTIONAL CAPACITY
CONTROL SELECT 1/2
38
37
36
35
DIGITAL INPUT: BOARD #3
PLUG X1
DIGITAL INPUT: BOARD #3
PLUG X2
INPUTS
INPUTS
1
1
1
1
1
1
1
1
N
N
8
7
6
5
N
1
2
3
4
N
N
CR
OP
CR
CMP
11A
12A
*SEE NOTE 10
A1
A2
*SEE NOTE 10
BLACK
BLUE
BROWN
BLUE
BLACK
VOLUME
INCREASE/DECREASE
ACTUATOR
CAPACITY
INCREASE/DECREASE
ACTUATOR
BROWN
LOW OIL LEVEL
LS1
Figure 10. Vission 20/20 Mircocontroller Diagram
Step 3. A dry contact from control relay CR11 must be wired to compressor motor starter coil. This dry contact
is wired to terminal blocks according to supplied drawing. Control power for this coil should come from
a source, which will be de-energized with compressor disconnect.
VISSION 2020 ON COMPRESSOR SKID
CUSTOMER MCC PANEL
(REFERENCE MCC OR STARTER DRAWING FOR DETAILED WIRING)
OIL PUMP START
COMPRESSOR MOTOR
STARTER AUX CONTACT
OIL SEPARATOR
HEATER START
AUX MS1
COMPRESSOR MOTOR
STARTER AUX CONTACT
TB-1
TB-31
CUSTOMER SUPPLIED
VISSION POWER CIRCUIT
N
OIL PUMP START
COMMAND
OIL SEPARATOR HEATER
START COMMAND
COMPRESSOR START
COMPRESSOR START
COMMAND
CB1
TB1-1A
TB1-N
TB1-18 TB1-4
TB1-11
TB1-12
TB1-17
TB-11
TB-12
TB-17
VISSION 20/20 POWER
#12AWG THHN (MINIMUM)
Figure 9. MCC and Customer Control Center Interconnect Wiring