Sav SAV 876.17, Руководство по эксплуатации

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SAV 876.17
EN
9 APPENDIX
Errors in the environment or operating errors
Appearance Error cause
Measures for
Error localisation
error elimination Comment
Holding force too low
Holding force selector switch
or NC signal set too low
Check holding force level Increase holding force level
Setting “Holding force curve” Check set value
Change value as per ope-
rating instructions
Workpiece properties
Check influencing factors
on the holding force as per
SAV catalogue
Optimise as per result
Contact service
if necessary
Power supply to the magnet
system connected incorrectly
Check terminal
assignment as per
circuit diagram Re-establish terminal
assignment as per circuit
diagram
Incorrect mains voltage
Check voltage indicated
on magnet housing/type
plate on polarity reversal
control unit
Establish correct power
supply
Before application with slip
ring body: Soiling between
the slip rings
Visual check Clean
Caution: Disconnect
devices from power
supply before che-
cking or replacing
Poor demagnetising
Demagnetising curve not set
correctly Check value as per opera-
ting instructions
Set value (see magnet
recommendation) or correct
after demagnetising test
Value 0-2 for
243.74, 243.77,
243.78 etc. as per
operating instructions,
fine adjustment if
necessary
Incorrect mains voltage
Check voltage indicated
on magnet housing/type
plate on polarity reversal
control unit
Establish correct power
supply
Power supply to the magnet
system connected incorrectly Check terminal assignment
as per circuit diagram
Re-establish terminal
assignment as per circuit
diagram
Workpiece properties
Check influencing factors
on the holding force as per
SAV catalogue
Optimise as per result
Contact service if
necessary
Before application with slip
ring body: Soiling between
the slip rings
Visual check Clean
Caution: Disconnect
devices from power
supply before che-
cking or replacing
Mains voltage drops during
demagnetising
Check mains voltage
fluctuation during the first
demagnetising impulses
Ensure stable mains supply
Cable cross-section of mains
supply line too weak or cable
length > 15 – 30 m voltage
loss < 2 %
Check cable cross-section
as described in the opera-
ting instructions
Install cable with correspon-
ding cross-section