User guide

62
Maintenance and troubleshooting
9.5. If you encounter problems
9.5.1. Resolution of problems when the device status LED is OFF
Device
status
LED
Current
output
AO1
Output DO1
and/or DO2
and/or DO3
Message
displayed
Possible cause Recommended action
OFF 0 mA low level "PWRFAIL" The supply voltage is too
low.
The device does not
function.
→ Check that the supply
voltage is between 18 and
36 V DC.
→ If the problem occurs again,
take contact with the retailer.
OFF 0 mA not switched - The device is not
energized.
→ Check the wiring.
→ Check the fuse of the
installation and replace it if
necessary.
→ Check that the installation is
not shut-down.
→ Check that the power source
is working properly.
9.5.2. Resolution of problems without message generation but
device status LED ON
Device
status LED
Current
output
AO1
Output DO1
and/or DO2
and/or DO3
Problem Recommended action
any colour 4-20 mA depending on
the thresholds
or switched
1)
Access to the Param-
eters and Test menus is
impossible.
→ Check the position of the "ENTER key
lock/unlock" switch. See chap. “7.3.3”.
any colour 0 mA depending on
the thresholds
or switched
1)
The current output
transmits 0 mA.
→ Check the wiring of the current output.
→ Check the fuse of the installation and
replace it if necessary.
→ Check the position of the sink/source
switch. See chap. “7.3.4”.
→ If the problem occurs again, take contact
with the retailer.
The current output
transmits a value
between 0 and 4 mA.
→ Switch the device power supply off then
on.
→ If the problem occurs again, take contact
with the retailer.
English
Type 8045