Operating Modes
Parameter manual
b maXX
BM5800
Document No.: 5.16029.03
Baumüller Nürnberg GmbH
536
3.8
Selecting the Inputs for HW Limit Switches
Not yet available
Limit Switch Monitoring
If the Target Position Setting mode is active and the drive is enabled and one of the hard-
ware limit switches is set, the following response takes place:
m
In Parameter
State of limit switches, the corresponding bit for the HW Limit
switch is set.
m
The drive is braked immediately to Speed = 0 with the ramp set in Parameter
Stop delay.
m
Movement further into the switch is inhibited.
m
If the "Error message"
response is selected, an error is generated.
Error 906: Negative hardware limit switch active
Error 907: Positive hardware limit switch active
The error generated does not result in the inhibition of pulses; the drive thus continues
to be position controlled. This error must be reset before a new motion task is execut-
ed.
Driving Out from the Limit Switch
If a new positioning task is now started, a check is made of the direction of travel:
New data set drives in blocked direction of revolution:
m
The data set is not executed.
m
The blocked direction of revolution remains blocked.
m
In error generation mode, the error message is generated again.
New data set drives in open direction of revolution:
m
The data set is executed.
m
The blocked direction of revolution continues to be blocked for as long as the corre-
sponding HW limit switch is set.
The HW limit switches cannot be used to hold (interrupt) a running positioning operation,
as in any case the new target position must drive into the open direction of revolution.
Special case - both limit switches active
If both hardware limit switches are active, both directions of travel will be blocked. A limit
switch must be free again before a motion task can be executed.
