User Manual

46
Sensor error detection limits
Error indications
Outside range readout (IN.LO, IN.HI):
If the valid range of the A/D converter or the polynomial is exceeded
Input Range Readout Limit
VOLT
0...1 V / 0.2...1 V
IN.LO < -25 mV
IN.HI > 1.2 V
0...10 V / 2...10 V
IN.LO < -25 mV
IN.HI > 12 V
CURR 0...20 mA / 4...20 mA
IN.LO < -1.05 mA
IN.HI > 25.05 mA
LIN.R
0...800
Ω
IN.LO < 0 Ω
IN.HI > 1075 Ω
0...10 kΩ
IN.LO < 0 Ω
IN.HI < 110 kΩ
POTM -
IN.LO < -0.5 %
IN.HI > 100.5 %
TEMP TC / RTD
IN.LO < temperature range -2°C
IN.HI > temperature range +2°C
Sensor error detection (SE.BR, SE.SH):
Input Range Readout Limit
CURR Loop break (4..20 mA) SE.BR <= 3.6 mA; > = 21 mA
POTM All, SE.BR on all 3-wire SE.BR > ca. 126 k
Ω
LIN.R
0...800
Ω SE.BR > ca. 875 Ω
0...10 kΩ SE.BR > ca. 11 kΩ
TEMP
TC SE.BR > ca. 750 k
Ω / (1.25 V)
RTD, 2-, 3-, and 4-wire
No SE.SH for Pt10, Pt20 and Pt50
SE.BR > ca. 15 k
Ω
SE.SH < ca. 15 Ω
Display readout below min.- / above max. (-1999, 9999):
Input Range Readout Limit
All All
-1999 Display readout <-1999
9999 Display readout >9999
Readout at hardware error
Error search Readout Error cause
Test of internal CJC sensor CJ.ER
CJC sensor defect or tem-
perature outside range
Checksum test of the configuration in FLASH FL.ER Error in FLASH
Check measurement of analogue output current AO.ER
1) No load on the current out-
put (only S4...20/S20...4 mA)
Communications test 4501 / 4116 NO.CO Connection error
Check that input signal matches input configuration IN.ER 1) Error levels on input
Check that saved configuration in 4501 matches device TY.ER Configuration is not 4116
! Error indications in the display flash once per second. The help text explains the error.
1) The error is reset by switching off and then switching on the supply voltage to the device.