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Elevation 1+
© 2011 Kinesys Projects Ltd
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Limits
The Elevation 1+ has the capability of monitoring and reacting to three different sets of
limit, these are software limits, end of travel limits and over-travel or ultimate limits.
Software Limits
Software or soft limits are positions stored by the software beyond which it will not run
the attached hoist. There is an upper and a lower soft limit and these can be set to any
value from –65,000 to 65,000. The value of the upper limit must be greater than that of
the lower but other than that the values may be set to any position. If target positions
greater than the soft limits are requested then the Elevation 1+ will clamp the target to
the limit.
Software Limit Override
When operating from an external computer controller the only way to travel further than
the soft limits is to reset the limits to allow a greater range of travel. If running locally in
manual mode or if access to the unit is possible then ‘limit bypass’ can be selected
within the menu system which will allow the unit to run through its soft limits. Always
ensure that this is reset to OFF afterwards otherwise the soft limits will have no effect on
future moves.
End of Travel Limits
These limits are physical limits located within the hoist and are monitored by the internal
electronics and software. Hitting an end of travel limit will stop the movement of the hoist
immediately and from then on will only allow movement in the opposite direction until
the limit has cleared. If a limit is hit the unit will display the limit name on the screen and
will report it back to the controlling computer.
End of Travel Limit Override
End of travel limits cannot be overridden as they still allow movement, it is just limited to
the opposite direction. These limits are generally set to protect the physical device by
preventing the hook running into the body or the end of the chain running through the
hoist. Adjustment of them can only be done by partial disassembly of the hoist.
Ultimate Limits
Ultimate limits are the last line of defence and should only be reached if both software
and end of travel limits have not been set correctly or have failed. The ultimate limits, if
fitted, are located within the hoist and are monitored by both software and hardware. If
an ultimate limit is hit then a safety chain of relays will be broken which will engage the
brake immediately and disable the internal drive electronics. Movement will be
prevented in either direction. Ultimate limits cannot be overridden by the controlling
computer and a special sequence must be followed in order to allow movement again.
An ultimate limit trip will be shown on the menu display on the unit and reported back to
the controlling computer.
Ultimate Limit Override
Due to the severity off hitting an ultimate limit both a software and hardware bypass is
