Nivus NFP, Инструкция по эксплуатации

Страница: 74 / 87

Instruction Manual
NIVUS Full Pipe
page 74 NFP - rev. 04 / 23.05.2018
Troubleshooting
Error Possible
Reason Correction
No indication of
flow
(>0< resp. >----<) Connection Check connection between sensor cable and ter-
minal strip;
Check complete cable incl. possible clamp con-
nections and overvoltage protection elements for
breaks, short-circuits or too high resistances;
Sensor connection cable connected to correct
terminal strip (Ex or non-Ex)?
Sensor Sensor alignment facing the flow direction, check
correct installation depth and horizontal installa-
tion.
Check sensor for soiling, sedimentation, silting (
→
to be removed) or mechanical damage or sensor
body and cable (
→
replace sensor).
Transmitter Call up error memory.
Take appropriate measures depending on error
message (check cables and clamp connections,
check sensor installation) or call NIVUS service
personnel.
Negative flow
direction Check sensor installation direction, rotate sensor
if required.
If measurement fails only with the flow direction
reverted
→
go to CAL-Flow Velocity – min. + max.
value: set min value to -6.0 m/s.
Programming Completely check the transmitter parameter set-
tings.
No screen (black /
flickering) Connection Check power supply connection.
Power supply Check power supply voltage.
Check switch position on connection board.
Compare power supply (AC or DC) with transmit-
ter type (see Table 3).
Display >Error
Sensor< Connection Check cable connection. Wiring on terminal strip
switched? Cables firmly connected to plugs (re-
tighten screws, pull at cable ends)? Insulation of
single wires unintentionally clamped in?
Communica-
tion Communication to sensor disturbed. Can be
checked by selecting Menu >I/O/v-Sensor<. Sen-
sors should be indicated in the first line of the fol-
lowing screen.
Check cable connection. Wiring on terminal strip
switched? Cables firmly connected to plugs (re-
tighten screws, pull at cable ends)? Insulation of
single wires unintentionally clamped in?