CG Drives & Automation 01-7513-11r0
Electrical installation
29
5.
Electrical installation
NOTE: Please consider the following points for the electrical installation:
• The safety input channels
STO1
and
STO2
are protected against reverse
polarity
• OSSD test pulse lengths of
≤
1ms are permissible, with frequency up to
200 Hz.
• The safety input channels are electrically isolated to the remaining cir-
cuitry
• Voltage supply to safety channels are only allowed from SELV/PELV sup-
ply subsystem.
• Passive sensors are commonly connected towards the STO safety
inputs via a safety relay / switching device. Note that the switching
device must comply with the required category of the application.
• Active sensors can be directly connected to the STO safety inputs,
which support OSSD pulses.
Summary of Contents for Emotron OSTO 100
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