
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
4-15
4.4 Description of the units
4 Function description
The load must not switch on because of the test.
Testing for shorts
A test is regularly carried out to check for shorts between the outputs.
Fig. 4-8: Test pulses
Key:
t
1
: Pulse length of on test (40 μs)
t
2
: Repetition length of on test (100 μs ... 3 ms)
t
3
: Cycle time of on test (30 μs ... 5 min)
][Funktionsbeschreibung_BA_Zusatz Einschalttest
WARNING!
When wiring an output with capacitance it is essential to note
the pulse duration, repetition period and scan time of the power-
up test, otherwise the load may switch on unintentionally.
Comentarios a estos manuales