VEGA VEGASON 66 4 … 20 mA_HART four-wire - Manual (Page 43)

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4 … 20 mA signal missing
l Wrong connection
à Check connection according to chapter "Connection
procedure" and, if necessary, correct according to
chapter "Wiring plan"
l No supply voltage
à check cables for line break, repair, if necessary
l supply voltage too low or load resistance too high
à Check, adapt, if necessary
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Current signal greater than 22 mA or less than 3.6 mA
l Electronics defective
à Exchange instrument or return instrument for repair
In Ex applications, the regulations for the wiring of intrinsically
safe circuits must be observed.
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E013
l no measured value available
à sensor in boot phase
à sensor does not find an echo, e.g. because of faulty
installation or incorrect parameter adjustment
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E017
l Adjustment span too small
à Carry out a fresh adjustment and increase the distance
between min. and max. adjustment
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E036
l no operable sensor software
à Carry out software update or send instrument for repair
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E041
l Hardware error, electronics defective
à Exchange instrument or return instrument for repair
Fault messages via the indi-
cating/adjustment module
Maintenance and fault rectification
VEGASON 66 - 4 ... 20 mA/HART - four-wire 43
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