Donati GRL Series, Manual

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USE AND MAINTENANCE MANUAL FOR
JIB CRANE - GRL SERIES
30
Rotating collector ring control
After carrying out the assembly as shown in the previous paragraph, make the connection as follows:
1. Connect the shortest cable to terminals L1-L2-L3 of the rotation equipment integrated in the gear motor
(fig. 47) or the connector block (fig. 48) for a manually rotated jib crane,
2. Connect cable C of the slip ring to the respective terminals of the line switch ( 15 ) (fig. 49)
3. Assemble the inspection window cover, taking care to insert the plate (or fork) welded to the cover into
the slip ring stop (fig. 50).
fig. 47
fig. 48
fig. 49
fig. 50
Column circuit breaker connection (fig. 51):
1. Position the circuit breaker in the specific hole of the column connecting the relative cables to the
respective terminals.
2. Complete the assembly with application of the casing and the red handle.
Connection and adjustment of the field limit switch (fig. 53):
1. Connect the arm rotation limit switch in the specific terminals of the rotation equipment, as indicated in
the wiring diagrams.
2. Follow the procedure below for adjusting the limit switch cams.
Contact function:
SQ5A = service limit switch RIGHT rotation
SQ6A = service limit switch LEFT rotation
SQ5B = emergency limit switch RIGHT rotation
SQ6B = emergency limit switch LEFT rotation