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Application Planning
3.4 Planning effective ranges
3.4
Planning effective ranges
Effective range and transponder
An effective range is physically formed by transponders mounted in the vicinity of the
machine. Each transponder sends a unique ID. The ID is received by the HMI device and
enables it to determine its distance from the transponder. If the HMI device is within the
effective range, safe operation is possible once it logs on in the effective range.
Rules for effective ranges
The following rules apply when defining effective ranges:
Rule
The maximum distance from the transponder
to the HMI device can be 8 meters.
No minimum distance to the transponder can
be configured, but this is always a percent of
the configured maximum range. The following
section provides a detailed description.
The effective range must be scaled so that the
danger point can be seen from every angle of
the effective range.
The distance between the machine to be
operated and the operator needs to be scaled
according to the machine.
Machine, transponder and operator position
need to be adapted to one another.
Effective ranges should not overlap.
Consequently you should only assign each
transponder to a single effective range.
Transponders in different effective ranges
must be far enough away from each other that
their transmission ranges do not overlap.
You can set up a maximum of 127 effective
ranges in a project.
A maximum of 127 transponders can be
assigned to one effective range.
46
Explanation
System limits
Too great a distance or a cluttered effective range
prevents visual control on the part of the operator.
Insufficient distance from the machine increases the
injury hazard for the user.
Too great a distance from the machine prevents
visual control on the part of the operator.
The HMI device needs to be able to measure the
distance to the transponder during operation. The
requires the HMI device to aligned with the
transponder. The operator needs visual contact to
the machine at the same time.
Assignment of effective range to the machine that
will be operated must be unique.
System limits
System limits
Fail-safe operation of the Mobile Panel 277F IWLAN
Function Manual, 08/2008, 6AV6691-1FQ01-2AB0
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