Analog Input Configuration - ABB SM3000 User Manual

...4 CONFIGURATION

4.6.2 Analog Input Configuration

Notes.
• The 'Analog I/P' tab is displayed only if 'Source ID' for the Recording Channel is set to an analog signal source – 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 (
82
) are not available.
Select the electrical characteristics of the input.
Notes.
• Simulated input types are available for evaluating
instrument features without the need for process
connections.
• If 'Volt free digital input' is selected, the input channel
becomes a digital input channel – see Section 4.6.3.
• Select 'Off' to disable an analog input.
Warnings.
• Ensure that the appropriate electrical connections have
been made – see Section 5.4.
• When 'Type' is set to 'Volts', input signals with
voltages greater than 2V (standard inputs) or 1V (high
specification inputs)
must
external voltage divider (part no. GR2000/0375) – see
Section 5.4.1.
• Input signals with voltages up to 2V (2000mV – standard
inputs) or 1V (1000mV – high specification inputs) may be
measured without the need for the voltage divider by
setting 'Type' to 'millivolts'.
• An external 10 shunt resistor is required for current
ranges – see Section 5.4.1.
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, set 'Type' to 'millivolts' and select the appropriate
linearizer type.
• Linearizer units are displayed only if a temperature
linearizer type (Thermocouple or RTD) is selected.
be connected through an