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Conveying System Mechanical Components Chapter 3: Installation 75 of 138
Figure 40: Typical SPDB 25, 30 Series Junction Box with Fused Disconnect Wiring Diagram
ON MOTOR STARTER (M)
TO L1, L2 AND L3
TO MOTOR
FROM DISC-2
M
OL
2
T1
1
L1
3
L2
5
L3
13
A1
A2
T2
4
T3
6
14
A2
95
96
97
98
TEST
TRIPPED
RESET
2
T
1
T
2
T
34 6
J1
T2T1 T3
1C
ON OVERLOAD (OL)
TO TERMINAL #96
SWITCH
VACUUM
TO
L1
TO SOL B
TO SOL A
DISCONNECT SWITCH
AT BOTTOM OF
FROM LI, L2 AND L3
L2
L1
L3
(NEUTRAL)
FROM CONTROLLER
OUTPUT FOR
SOLENOID
OUTPUT FOR VACUUM
FROM CONTROLLER
BLOWBACK SOLENOID
L1
DISC
L2
L3
FOR PUMP MOTOR STARTER
(115VAC)
L2 L3
FROM CONTROLLER OUTPUT
(FROM DISC-4)
FOR BLOWBACK SOLENOID
TO TERMINAL A1 (+24VDC)
FROM CONTROLLER OUTPUT
ON MOTOR STARTER (M)
FOR HIGH VACUUM
TO CONTROLLER INPUT
(0VDC)
FOR PUMP MOTOR STARTER
FROM CONTROLLER OUTPUT
TO MOTOR
FROM L1, L2 AND L3
AT BOTTOM OF
DISCONNECT SWITCH
OL
M
2
T1
1
L1
3
L2
5
L3
13
A1
A2
T2
4
T3
6
14
A2
95
96
97 98
TEST
TRIPPED
RESET
2
T
1
T
2
T
3
4 6
J1
T2T1 T3
TO L1, L2 AND L3
L1
MOTOR STARTER (M)
TO TERMINAL A1
(+24VDC) ON
L2L1 L3
(FROM DISC-1)
(+24VDC)
L1
VS
DISC
L2
L3
L2 L3
SUB PANEL LAYOUT AND CONNECTION DIAGRAM
FROM DISC-1
TO CONTROLLER INPUT
FOR HIGH VACUUM
VS
(115V AC)
SUB PANEL LAYOUT AND CONNECTION DIAGRAM
(24V DC)
115V AC CONTROL VOLTAGE
JUNCTION BOX ON VACUUM PUMP
TO BE PROVIDED BY CUSTOMER
3 PHASE / 4 WIRE SERVICE
(0V DC)
FROM CONTROLLER OUTPUT
SOLENOID
FOR PUMP BLOWBACK
FROM CONTROLLER OUTPUT
FOR PUMP MOTOR STARTER
FOR PUMP VACUUM
FROM CONTROLLER OUTPUT
(115V AC)
L2
L3
L1
BLOWBACK SOLENOID
ON PUMP
SOL B
(+24V DC)
MOTOR STARTER
VACUUM PUMP
FOR PUMP HIGH VACUUM
SOLENOID ON PUMP
VACUUM
TO CONTROLLER INPUT
VS
SOL A
0L
96 95 A2
J1
N.O.
M
A1
CONTROL WIRING
ON PUMP
BLOWBACK SOLENOID
(NEUTRAL)
FOR PUMP HIGH VACUUM
TO CONTROLLER INPUT
VACUUM
VACUUM PUMP
SOLENOID ON PUMP
MOTOR STARTER
0L
SOL A
SOL B
96 95 A2
J1
A1
M
VS
N.O.
POWER WIRING WITH DISCONNECT SWITCH
FU
FU
FU
L2
L3
L1
M
T2
T3
OL
T1
MTR
5 H.P. PUMP
SOLENOID
24V DC CONTROL VOLTAGE
JUNCTION BOX ON VACUUM PUMP
CONTROL WIRING
DISC-1
DISC-2
DISC-3
DISC-4
DISC-1
DISC
(FROM DISC-3)
ON MOTOR STARTER (M)
TO
BOX
JUNCTION
BLOWBACK
VACUUM
COMMON
SOL A/B
KAY VALVE
LOCATED ON
PUMP
BLOWBACK
COMMON
VACUUM
TO
SOL A/B
KAY VALVE
LOCATED ON
PUMP
JUNCTION
BOX
FOR VACUUM SOLENOID
FROM CONTROLLER OUTPUT
DISC
(VS)
FROM CONTROLLER OUTPUT
FROM CONTROLLER OUTPUT
FOR PUMP VACUUM
FOR PUMP BLOWBACK
SOLENOID
SOLENOID
FROM CONTROLLER OUTPUT
FOR PUMP MOTOR STARTER
(MTR)
(DISC)
GRD
TO TERMINAL A1 (NEUTRAL)
(MTR)
(DISC)
GRD
ON MOTOR STARTER (M)
Note: This information is shown for reference only. Refer to the electrical
Schematics that were supplied with your equipment and controls for specific
wiring information.