Commissioning
EL33xx-00x0
150
Version: 4.2
5.6.3
Underrange, Overrange
Undershoot and overshoot of the measuring range (underrange, overrange), index
• U
k
> Uk
max
: Index
and index
(overrange and error bit) are set. The
linearization of the characteristic curve is continued with the coefficients of the overrange limit up to the
limit stop of the A/D converter or to the maximum value of 0x7FFF.
• U
k
< Uk
max
: Index
and index
(underrange and error bit) are set.
The linearization of the characteristic curve is continued with the coefficients of the underrange limit up
to the limit stop of the A/D converter or to the minimum value of 0x8000.
For overrange or underrange the red error LED is switched on.
5.6.4
Notch filter (conversion times)
Notch filter, index
The EL33xx terminals are equipped with a digital filter. The filter performs a notch filter function and
determines the conversion time of the terminal. It is parameterized via the indices
. The
higher the filter frequency, the faster the conversion time.
Index 0x80n0:06
The filter function is always active even if the bit is not set, since this is obligatory for the measure-
ment process!
The filter characteristics are set via index
The filter frequencies are set for all channels of the EL33xx terminals centrally via index
(channel 1). The corresponding indices 0x8010:15 of the EL3312 or 0x8010:15, 0x8020:15,
0x8030:15 of the EL3314 have no parameterization function.
Conversion time
The conversion time is determined as follows:
No. of active channels * no. of measurements * no. of filter p computing time = conversion
time
Example: EL3311 (1 channel), 3 measurements (thermocouple, wire breakage, cold junction), filter 50
Hz
1 channel * 3 measurements * (1/50 Hz) + 3 ms ≈ 63 ms
Example: EL3314 (2 channels), 3 measurements (thermocouple, wire breakage, cold junction), filter
50 Hz
2 channels * 3 measurements * (1/50 Hz) + 6 ms ≈ 126 ms
Example: EL3314 (4 channels), 3 measurements (thermocouple, wire breakage, cold junction), filter
50 Hz
4 channels * 3 measurements * (1/50 Hz) + 12 ms ≈ 252 ms
Summary of Contents for EL33-00 Series
Page 2: ......
Page 6: ...Table of contents EL33xx 00x0 6 Version 4 2...
Page 17: ...Product overview EL33xx 00x0 17 Version 4 2 Fig 10 EL3312 Fig 11 EL3314...
Page 18: ...Product overview EL33xx 00x0 18 Version 4 2 Fig 12 EL3314 0002 Fig 13 EL3314 0010...
Page 61: ...Mounting and wiring EL33xx 00x0 61 Version 4 2 Fig 45 EL3314 0010 Fig 46 EL3314 0090...
