Project Planning Manual SIPART DR20
3.1.3 Additional Modules (Options)
3.1.3.1 Analog Inputs AE 3 and AE 4
As already mentioned and shown in Fig. 3/1, the standard controller can be equipped
with two additional input modules. Definition of the functions and all other programming are
described in Section 3.2. The following signal converters are available:
6DR2800-8J Input module with electronic isolation for standardized current signal of 0/4 to 20 mA
with 49.9 Ω load or voltage signal of 0 to 10 V.
6DR2800-8R Input module for resistance transmitter (potentiometer); the start-of- scale and
full-scale values can be adjusted during operation on the rear of the device. Three
rated resistance ranges (full-scale values) can be preset on the module: 100 to
220 Ω, 200 to 500 Ω and 470 to 1000 Ω. This module can also be used as
a current input without electrical isolation and with adjustable start-of scale and
full-scale values.
6DR2800-8P Input module for connection of a Pt 100 resistance thermometer with a two-wire,
three-wire or four-wire system within a measuring range from -50 to + 850 °C.
Span ≥ 50 °C; the start-of-scale and span values can be set on the module using
jumpers, the fine adjustment of the start-of-scale and full-scale values is made on
the rear of the device during operation. The output is linear.
6DR2800-8T Input module for mV signals or for direct connection of thermocouples. The span is
≥10 mV, the start-of-scale value ≤ 50 mV. The module is electrically isolated. The
start-of-scale and span values are set on the module itself using jumpers. The fine
adjustment is made at the rear of the module during operation. Linearization is
carried out by a function generator in the standard controller. A temperature sensor
fitted to the connection terminal is used for cold junction compensation; an external
cold junction is possible. The following thermocouples according to the new DIN IEC
584 Section 1 can be connected:
Cu-CuNi (type T), Fe-CuNi (type J), NiCr-Ni (type K), NiCr-CuNi (type E), Pt10Rh-Pt (type S),
Pt13Rh-Pt (type R), Pt30Rh-Pt6Rh (type B) as well as types U (Cu-CuNi) and L (Fe- CuNi) to
DIN 43 710.
A further jumper setting determines whether the device input is driven to zero or full-scale in the
event of a thermocouple breakage.
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