Analog Input Configuration - ABB SM3000 User Manual

SM3000
Multipoint Videographic Recorder

6.6.2 Analog Input Configuration

Note.

The 'Analog I/P' tab is displayed only if 'Source ID' for the Recording Channel is set to an analog signal source – see
Section 6.6.1, page 87.

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 (
IM/SM3000–EN Rev. L
) are not available.
Select the electrical characteristics of the input.
Note.

Simulated input types are available for evaluating
instrument features without the need for process
connections.

If a standard analog input module is fitted and 'Volt free
digital input' is selected, the input channel becomes a
digital input channel – see Section 6.6.3, page 92.

Select 'Off' to disable an analog input.
Warning.

Ensure that the appropriate electrical connections have
been made – see Section 7.4, page 114.

When 'Type' is set to 'Volts', input signals with voltages
greater than 2 V (standard inputs) or 1 V (high specification
inputs) must be connected through an external voltage
divider (part no. GR2000/0375) – see Section 7.4.1,
page 114.

Input signals with voltages up to 2 V (2000 mV – standard
inputs) or 1 V (1000 mV – 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 7.4.1, page 114.
Select the linearizer type and the units used to condition the
input signal before it is sampled.
Note.

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.
6 Configuration
89