4function description, 4 description of the units – Pilz PSENvip RL D P User Manual
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Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
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
μ
s)
t
2
: Repetition length of on test (100
μ
s ... 3 ms)
t
3
: Cycle time of on test (30
μ
s ... 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.
1
t2
t1
t1
t3
t1
t
t2
t1
U
0