Bosch Rexroth IndraDrive Series Applications Manual page 48

DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
● Short circuit between both selection signals
In order that all other relevant errors can be detected by the optional safety
technology modules "L3"/"L4", the dynamization pulses of the OSSD outputs
must comply with the following limit values:
Value
t 1 ms
PLmax
t
20 µs
PLmin
t
1 h
Pmax
t
500 µs
Pmin
t 1 s
Vmax
t = t / t
90 %
Dmin PH P
t 400 ms
Bounce
φ -
Tab. 5-1: Limit values of the dynamization pulses of the OSSD outputs
Fig. 5-2: Example of dynamized selection signals
The figure below illustrates, in schematic form, the interconnection of an
active safety unit and several drives with an "L option":
Bosch Rexroth AG
Functional principle of integrated safety technology
Explanation
Maximum low time of the test pulse
Minimum low time of the test pulse
Maximum periodic time of the test pulses
Minimum periodic time of the test pulses
Maximum delay of the selection signals
for selection or deselection
Minimum sampling ratio of the selection
signals
Maximum bounce time for a selection or
deselection
Phase shift of the test pulses on both
channels: No requirement
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