Collision Monitoring (As From Sw 6.3); Additive Protection Zone Adjustment Via Setting Data; Collision Monitoring Without Reduction Zone - Siemens SINUMERIK 840C Installation Instructions Manual

01.99
12.32.15
12.32.15.1
The additive protection zone adjustment is activated by the MD 3876* bit 1 specific to
protection zones.
In order to be able to adjust a protection zone to dynamically changing machine geometries,
the main dimensions of a protection zone (MD 3812*, 3814*, 3816*) are adjustable via instantly
effective setting data bits.
There are two setting data bits per protection zone coordinate, one for each coordinate
direction. The setting date is added to the main dimension of the protection zone and
consequently enlarges the protection zone for the respective coordinate direction.
Consideration of the "additive protection zone adjustment" takes place before the "automatic
protection zone adjustment to the active tool" (as from SW 6.1). If the current tool assigned to
the protection zone still projects from the protection zone after the additive protection zone
adjustment, then this adjustment is implemented automatically. If after the additive protection
zone adjustment the tool is within the protection zone, no further adjustment incurs.
The values for the coordinates of the additive protection zone adjustment are to be entered in
the setting data bit 800*, 804*, 808*, 812*, 816* and 820*.
Setting data specific to the protection zone can be written with @411.
12.32.15.2
The implemented safety concept will influence the entire mode group of the motion axes of the
two protection zones by way of reduction factor of the collision monitoring on the approach to
these two protection zones.
If two protection zones are positioned next to one another in such a way that their distance
from one another is smaller than their deceleration distance then this will influence the
traversing velocity of the entire mode group. In certain instances, this may be undesirable, e.g.
if the corresponding machine parts (second slide, quill, steady) are to be "parked" only
temporarily to provide sufficient space around the workpiece during a machining situation. To
switch off protection zone monitoring in this case is not a satisfactory solution since collision
monitoring should be active during the entire machining period.
With the function "Collision monitoring without reduction zone", each protection zone can be
individually extracted from the reduction factor calculation, i.e. its deceleration range with
regard to collision monitoring will turn towards 0.
However, this will have the result that only from the moment of collision of two protection
zones, for which this function is active, the respective mode groups will be influenced. The
axes will then be brought to zero speed via set value 0 instead of via the configured maximum
accelerations.
The function is selected via the PLC interface DB 48, DW 74 and 76.
© Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
More user manuals on

Collision monitoring (as from SW 6.3)

Additive protection zone adjustment via setting data

Collision monitoring without reduction zone

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12.32.15 Collision monitoring (as from SW 6.3)
6FC5197- AA50
12 Functional Descriptions
12–329