Engineering
26
04/99 AWB 2700-1311 GB
Key to Figure 11:
햲 Main switch
햳 Protection for power supply units
햴 Miniature circuit-breakers
햵 Ground fault monitoring device
햶 Potential equalisation rail
햷 Reference potential for the analog signals
햸 Analog signal input from 0 to 10 V
햹 Analog output
햺 Low-impedance, large contact area connection
between the PS 4-300 and the ground reference
potential via top-hat rail and metal mounting plate
햻 Power supply units grounded
햽 Power supply units not grounded
Maintain a clearance of at least 30 cm
between analog cables and power supply
cables.
Avoid laying the 0 V cable for the analog
signals together with the 0 V cable of the
PS 4-300 and the 0 V cable for the digital
inputs/outputs.
Ensure that analog actuators and encoders
are electrically isolated. If potential isolation is
not sufficient, the manufacturers of the
analog encoder and actuator can provide
suitable filters.
H1311g.bk Seite 26 Freitag, 4. Juni 1999 1:12 13
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