PACMotion™ PSD
Installation and User Manual
Section 4
GFK-3168A
September 2020
Technical Description and Data
39
4.16.7
Enclosure, wiring
Since the drive meets IP20, you must select an enclosure that permits safe operation of the drive.
The enclosure must at least meet IP54 .Wiring remaining within the specified enclosure must meet
the requirements of the standard IEC 60204-1 and ISO 13849-2 (Table D.4).
If you are wiring leads that are outside the specified enclosure (IP54), the cables must be laid
durably (firmly), protected from outside damage (for example, by laying the cable in a duct), placed
in different sheathed cables, or protected individually by grounding connection.
4.16.8
OSSD Test Pulses
Figure 10: OSSD Test Pulses
Safety controllers usually check their outputs periodically during the normal operation. These test
procedures create pulses to the STO-Enable input.
Note: Test pulses with T1
≤
300 µs and T2
≥
200 ms will not have any influence to the safety
relevant STO function.
Test pulses, which are outside of this specification, will switch the STO function, but will not create
a dangerous situation.
4.16.9
Functional description
When STO function (Safe Torque Off) is not needed, then STO-Enable must be connected directly
with +24 V. The STO function is then bypassed and cannot be used.
If the STO function is in use, then the STO-Enable must be connected to the output of a safety
control or a safety relay, which at least meets the requirements of PLd, CAT 3 according to ISO
13849 (connection diagram: (