Owner manual

Trouble-shooting Series 642
30 Pyromation, Inc.
8.2.2 Monitoring the supply voltage
If the necessary supply voltage is undershot, the analog output value drops approx. 3 s ≤ 3.6 mA.
Error code 19 appears on the display. Then the device attempts to output the normal analog output
value again. If the supply voltage remains too low, the analog output value drops again to ≤ 3.6 mA.
This prevents the device from constantly outputting an incorrect analog output value.
8.3 Application errors without messages
8.3.1 Application errors in general
8.3.2 Application errors for RTD connection
Pt100/Pt500/Pt1000/Ni100
Error pattern Cause Action/cure
No communication No power supply via the
2-wire line
Connect connecting cables correctly in
accordance with terminal plan (polarity)
250 Ω communication resistance missing See Section 4.3.1 "Connecting HART
®
"
Supply voltage too low (<11 V or 8 V
without display with jumper J3)
Check power supply
Interface cable defective Check interface cable
Interface defective Check interface of your PC
Device defective Replace device
Error pattern Cause Action/cure
Error current
(≤ 3.6 mA or ≥ 21 mA)
Sensor defective Check sensor
Incorrect RTD connection Connect connecting cables correctly
(terminal plan)
Incorrect 2-wire line connection Connect connecting cables correctly in
accordance with terminal plan (polarity)
Faulty device programming (number of
wires)
Change SENSOR CONNECTION device
function
Programming Incorrect sensor type configured in the
SENSOR TYPE device function; change to
correct sensor type
Device defective Replace device