BMR SFU 0303, Руководство пользователя

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SFU 0303 Frequenzumrichter
Test pulses
Test pulses from safety devices are tolerated within a certain range, but are not evaluated and do not
lead to STO being switched off
→ OSSD signals with a test pulse length of max. 3.5 ms are tolerated at 24 volts.
Rückmeldekontakt STO
✓
is open when STO is active the inverter is inhibited
- if no signal or 0V is applied to the control inputs STO-A and STO-B
- when only one input is energized. STO error
- if the supply voltage of the STO logic unit is missing or has failed.
✓
The feedback contact is closed when STO is inactive, the inverter is enabled
Timing STO
✓
STO channels 1 and 2 and the feedback contact are galvanically isolated from each other and from all
other inputs and outputs
✓
The relay normally open contact between pins 1 and 2 is potential-free and is used to provide
feedback on the status of the STO:
Attention:
The feedback contact has only a single-channel design and may therefore only be used
for monitoring, but not in the safety circuit.