Lenze E94AYAE SM301 - Manual (Page 37)

Lenze · SM301 safety module · Parameter setting & configuration · DMS 2.3 EN · 11/2013 · TD05
37
3 Safe configuration
3.8 Safe output
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3.8 Safe output
General information
Via the safe output O1A/O1B information can be output to a higher-level unit (e.g. safety PLC) or
external switching elements (actuators) can be controlled.
• The 24V supply of the safety module and the safe output must be provided by safely separated
power supply units. In order to keep the circuits electrically isolated, separate voltage supplies
are required.
• The status of the safe output is controlled by two ways:
• Directly by the safety module through a corresponding setting of the parameters "SD-Out1
switching condition" and "SD-Out1 logic function".
• Via the PROFIsafe output data in connection with the parameterised "SD-Out1 logic
function".
• The safe output is PP switching, i.e. two plus channels are switched.
The following applies to SM301 from V1.1:
If the "Safe cascading" safety function is active, the safe SD-Out1 output is used as cascading output
and cannot be parameterised as a universal feedback output.  Cascading (CAS) ( 57)

Tip!
Detailed information on the functional test by means of test pulses and example circuits
can be found in the manual for the safety module.

Note!
The safe output is tested cyclically in the ON state by a short LOW switching.
• When selecting the downstream control elements, ensure that the test pulses are not
detected as LOW signals.
• These errors are detected immediately and set the output to the OFF state.
• Short circuit to supply voltage.
• In the ON state: Short circuit between the output signals.
• In the ON state: Missing 24-V supply voltage at terminal 24O is detected as "Stuck-
at-Low" error.
• These errors are not detected:
• In the OFF state: Short circuit between the output signals.