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Protection
Over voltage and power supply inversion protection. The encoder is protected to prevent its destruction in case of reverse polarity of
power and/or spikes exceeding 35Vdc.
Voltage drops. The device stops working below 3.9 Vdc. Up to this point the PR90 maintains the outputs at standard TTL levels, and if the
voltage drop has been excessively slow the encoder goes into protection mode; to reset the rated voltage to recover its normal operation
you must just turn it off and on again.
Electrostatic and/or electromagnetic discharges. Complies with the EMC directive
. Although the equipment is protected to withstand electrostatic discharge above ± 15KVolt., occasionally the
61000-6-3:2007 + A1:2012)
signal may lose a certain number of pulses during the discharge, at this point the equipment will reset the signal in under 100msec, the
standard delay for a Watch-Dog circuit.
Active reset of the high-efficiency uController. This circuit resets uController operation in extreme cases of malfunction. For example,
this situation can occur in unstable or high-noise power connections.
False power connections. The encoder is protected to withstand being switched on and off repeatedly within the margins of usual
operation, without the equipment being harmed.
The electronic circuit has ultra-fast electronic fuses; in the event of a fault or failure, these fuses avoid greater damage and more
expensive repairs.
Electronics designed under the BSI security regulations, so as to avoid smoke and fire.
4-layer printed circuit designed under MIL standards, to offer greater mechanical robustness in order to avoid external radio-magnetic
influences.
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It is not recommendable, like with any other electrical device, to turn the equipment on and
off repeatedly in rapid succession while connected to mains power.
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(UNE-EN 61000-6-2:2006 + ERR:2009 and UNE-EN
USER MANUAL
PR90 / PR90H
Encoder PR90 / PR90H
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