ABB REM 54 Series, Technical Reference Manual

Page: 56 / 110

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1MRS750915-MUM
Machine Terminal
Technical Reference Manual, General
REM 54_
5.1.9. RTD/analog inputs
The machine terminals equipped with an RTD/analog module (RTD1) have eight
general purpose analog inputs for DC measurement. The RTD/analog inputs are
galvanically isolated from the machine terminal power supply and enclosure.
However, the inputs share a common ground.
For technical data of the RTD/analog inputs, refer to Table 5.2.1-4 on page 81.
The parameters for the RTD/analog inputs are included in the parameter lists on the
CD-ROM Technical Descriptions of Functions (see “Related documents” on
page 10).
5.1.9.1. Selection of input signal type
The general purpose RTD/analog inputs accept voltage-, current- or resistance-type
signals. The inputs are configured for a particular type of input signal by means of
the channel-specific “Input mode” parameters that can be found in the menu
Configuration/RTD1/Input #
. The default value is “Off” which means that
the channel is not sampled at all, and the IN+, IN- and SHUNT terminals are at high
impedance state.
5.1.9.2. Selection of input signal range
For each measuring mode, a separate parameter is provided for choosing between
the available measurement ranges. These channel-specific parameters, which can be
found in the menu
Configuration/RTD1/Input #
, are named
Voltage
range
,
Current range
,
Resistance range
and
Temperature range
.
REM 543/REM 545 + RTD1
RTD/analog inputs RTD1_6_AI1
RTD1_6_AI2
RTD1_6_AI3
RTD1_6_AI4
RTD1_6_AI5
RTD1_6_AI6
RTD1_6_AI7
RTD1_6_AI8
Parameter Values Default
Input mode 0 = Off Off
1 = Voltage
2 = Current
3 = Resistance 2W
a
a. Two-wire measurement
4 = Resistance 3W
b
b. Three-wire measurement
5 = Temperature 2W
a
6 = Temperature 3W
b