EC&M Crane Control Class 6121

Crane Control Class 6121 Wiring Diagrams

ELEMENTARY WIRING DIAGRAM FOR HOIST CONTROL

PU 55V

42

43

LSR

4A

LS

1L

Y5

Y3

3A 2A 1A

LS RES

SERIES BRAKE(S)

SERIES FIELD

+

LSW

1FU

2FU

LS

H Y1 LS

LSW

–

B

R4

R3

R2

M

Y4

A1

A2

R1

CRANE CONTROL CLASS 6121

1OL

2OL

ARM

ACCEL RESISTOR

S2

S1

R5

(IF USED)

R11

(IF USED)

INST

LS

ITE

Y6

Y2

–

+

DB

FUSE 15A CSW

CSW

TEASER RES (if used)

2L

3L

FUSE 15A

CAUTION

R10

R7

DYN. BRK'G RES

TWO SHOES RECOMMENDED SEE SERVICE BULLETIN

R8

R9

21

28

O F F MASTER SWITCH

HOIST

LOWER

LSR

5 4 3 2 1

1 2 3 4 5

1OL

2OL

25

26

24

20

1

22

23

UV

UV

DB

20

28

2

27

VR

1L

29

3

M

H

20

4

H

5

30

1A

20

26

6

H

H

31

31

DB

H

2L

3L

2L

33

32

VR

26

34

3L

3L

33

1AR

1L

VR

7

36

35

2L

(3)

(1)

(.6 SEC)

1A

DB

1A

20

26

8

37

2A

2AR

2A

9

10

38

3A

(3)

(1)

(.6 SEC)

20

10

1L

26

3AR

3A

39

11

40

4A

(3)

(1)

(.6 SEC)

DB

20

12

41

26

12

1L

X = CONTACT CLOSED

O F 5 4 3 2 1 F 1 2 3 4 5 CONTACTOR SEQUENCE X=POWER TIPS CLOSED HOIST LOWER

DEVICE

4A 1L 2L 3L 1A 2A 3A M H DB

CONTACTORS 1A & 1L, 3L & H, H & 2L, ARE MECHANICALLY INTERLOCKED.

54

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