69
V
0
20
Standard Inputs
Limits of Electrical Ranges
Input
Type
mV
mA
Ω
Min.
Max.
0
0
0
2000
50
5000
4
CONFIGURATION…
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
must
be connected through
an external voltage divider (part no. GR2000/0375) –
see Section 5.4.1.
• Input signals with voltages up to 2V (2000mV) may be
measured without the need for the voltage divider by
setting 'Type' to 'millivolts'.
• An external 10
Ω
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.
Set the required electrical range.
Notes.
• Applicable only to mA, mV, V and Resistance input types.
• When an input is connected through an external voltage
divider (see
Warnings
above), set the electrical range low
and high values 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:
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 (
) are not available.