Pilz PSS 3075-3 Series, Manual

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Operating Manual: PSS 3075-3 Series 6-1
General requirements
Please note the following:
• When selecting the power supply, please refer to the requirements stated
under “Technical Details”.
INFORMATION
The output circuits have been designed to guarantee maximum safety.
To achieve this, extensive tests are carried out internally. If the supply
voltage is interrupted briefly during a test function, the relevant test pulse
output will be deemed to be defective.
The normal error reaction will occur: the PSS switches to a STOP
condition.
Remedy: The PSS supply voltage must be buffered.
• Overvoltage and spikes of interference outside the specifications can
damage the PSS. In this case the PSS will switch to a safe condition.
You should therefore ensure that appropriate EMC measures are taken.
• To achieve the lowest possible residual ripple (< ± 1.2 V), we
recommend that you install a three-phase bridge rectifier or regulated
supply.
• The size of the fuse will depend on the system’s technical details, the
cable cross section and on local regulations.
• The external 24 V supply must be able to provide the following current:
Connectors X0 and X7: the current for the internal supply to the PSS,
depending on the unit type (see “Technical Details”), plus the maximum
permitted load current at connectors X1 and X2 / X8 and X9. The overall
load at full load may be a maximum of 10 A each.
WARNING!
Electric shock!
Safe electrical isolation must be ensured for the external 24 V supply.
Failure to do so could result in electric shock. Power supplies must conform
to EN 60950, 03/97, section 2.3, EN 60742, 9/95 or EN 50178, 10/97.
Supply Voltage