Analog Input Configuration - ABB SM2000 User Manual

...4 CONFIGURATION

4.6.2 Analog Input Configuration

Note.
• This tab is displayed only if the Source ID is set to an analog signal – see Section 4.6.1.
• If an analog input is assigned to more than one recording channel, changes to any of its parameters and tags are applied to
each channel the input is assigned to.
• If an analog input is already assigned to another channel, the edit keys are not available.
Analog i/p A1
Alarm A
Set Up
4 – 20mA
Input type
Analog i/p A1
Type
Linearizer type
Linearizer units
Electrical range low
Electrical range high
54
Alarm B Totalizer --->
milliAmps
Linear
Degrees C
5.2
52.0
OK
Set the electrical characteristics of the input.
Note. Simulated input types have been made available
for evaluating instrument features without the need for
process connections.
Caution. Ensure that the appropriate electrical
connections have been made. An optional external voltage
divider (part no. GR2000/0375) is required for operation when
this parameter is set to 'Voltage' – see Section 5.4. Voltages
under 2V can be measured without a divider using the milliVolt
range. An external shunt is required for current ranges – see
Section 5.4.
Select the linearizer type and the units used to condition the
input signal before it is sampled.
Notes.
• For thermocouple applications using an external fixed cold
junction, select 'mV' input type and the appropriate
linearizer type.
• Linearizer Units are displayed only if a temperature linearizer
type (Thermocouple or RTD) is selected.
Notes.
• mA, mV, V or Resistance input types only.
• An optional external
GR2000/0375) is required on each channel where the
'Input type' parameter (above) is set to 'Voltage' – see
Section 5.4. The electrical range low and high should be
set to the actual voltage applied to the divider, not the
voltage after it has been divided down.
The range of the electrical input signal is determined by the
input type:
Input Standard Inputs
Type
mV V mA
Min.
0 0 0
Max.
2000 20 100 5000
Limits of Electrical Ranges
voltage divider (part no.
High Spec Inputs
Ω
Ω
mV V mA
–1000 0
–20 –100
0
1000 20 100 2000