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
Type milliamps
Linearizer Type Linear
Linearizer units Degrees C
Electrical range low 5.2
Electrical range high
•1 If this parameter is changed to or from 'Volt free digital input', a new internal data file for this recording channel is created. All
historical data stored internally for this channel is lost.
62
52.0
Set the electrical characteristics of the input.
•1
Notes.
• Simulated input types have been made available for
evaluating instrument features without the need for
process connections.
• If 'Type' is set to 'Volt free digital input', the input channel
becomes a digital input channel – see Section 4.6.3.
• Set 'Type' to 'Off' to switch off an analog input.
Warning. 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
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
Min.
0 0
Max.
2000 20
Limits of Electrical Ranges
external voltage divider
Ω
mA
0 0
50 5000
(part no.