Smart Chain Hoist Reference Manual
Published 4-14-20
There shouldn’t be a need to open this side of the hoist, however it’s always nice to know what you’re
looking at.
SETTING THE LIMITS
Setting limits is important for operating any automated effect. Setting limits prevents the machine from
moving past a safe location, protecting the machine and the load attached. The limits for the
Smart
Chain Hoist
are inside the enclosure and are pre-set from the factory to allow the maximum chain
travel while keeping the machine from damaging itself.
There may come a time when your installation requires resetting the limits for a particular installation.
Keep in mind that you will also need to restore those limits at the end of the run.
The Smart Chain Hoist includes four limits:
●
FWD Ultimate
●
FWD
●
REV
●
REV Ultimate
The initial and ultimate limits are factory set the correct distance apart to not inadvertently trip an
Ultimate Limit.
These limits are actuated by rotary discs on a threaded rod driven by a worm gear. The discs are
indexed for a capture plate to keep them from free spinning once the limit is set. As the motor runs, the
discs are pulled along the threaded rod until they make contact with the limit switch.
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