12
Functional safety
Safety conditions
Operating Instructions – MOVIMOT
®
advanced
288
– The test pulses in both sourcing channels must not exceed 1ms.
– The next switch-off test pulse in one sourcing channel must only occur after a
2ms time period.
– A maximum of 3 switch-on test pulses may be generated in sequence at an in-
terval of 2ms. Wait for at least 500ms after any package before you generate
another switch-on test pulse or another switch-on test pulse package.
– The signal levels must be read back by the safety controller and compared to
the expected value.
– The signal levels may have a maximum temporal discrepancy of 130 ms. In
case of a larger temporal discrepancy, the device changes to the STO fault
state (F20.11).
2-pole sourcing/sinking:
• Test pulses can be used when the device is switched on or off.
– The test pulses in the sourcing and sinking channel must not exceed 1ms.
– The next switch-off test pulse in the sourcing or sinking channel must only oc-
cur after a 2ms time period.
– A maximum of 3 switch-on test pulses may be generated in sequence at an in-
terval of 2ms. Wait for at least 500ms after any package before you generate
another switch-on test pulse or another switch-on test pulse package.
– The signal levels must be read back by the safety controller and compared to
the expected value.
2-pole serial sourcing:
• Fault exclusion in the connection lead is mandatory if no external test pulses are
possible.
1-pole sourcing output:
• Test pulses can be used when the device is switched on or off.
– The test pulse in the sourcing channel must not exceed 1ms.
– The next switch-off test pulse may only occur after a time period of 2ms at the
earliest.
– A maximum of 3 switch-on test pulses may be generated in sequence at an in-
terval of 2ms. Wait for at least 500ms after any package before you generate
another switch-on test pulse or another switch-on test pulse package.
– The signal levels must be read back by the safety controller and compared to
the expected value.
25891936/EN – 05/2020
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