I/O Module Configuration; Analog Inputs - ABB SM1000 User Manual

4.7 I/O Module Configuration

Common
Group 1
Channels 1.1 - 1.6
Group 2
Channels 2.1 - 2.6
Functions
I/O Modules
Exit
Note. The instrument detects the type of module fitted in each position automatically.

4.7.1 Analog Inputs

A:-Analog i/p
50 Hz
Mains rejection frequency
Press edit to adjust....
Input A1
Fig. 4.17 I/O Module Configuration
Set the Mains rejection frequency used to filter electrical
noise induced on the signal lines by power supply cables.
Input Adjustment
Inputs can be fine-tuned to remove process offset errors or
system scale errors.
Notes.
• Input adjustment frames appear only if recording is
enabled during configuration, i.e. the 'Disable recording in
configuration' check box is
Configuration level – see Fig. 4.1, page 38.
• Changes to the Analog Input Type (Section 4.6.2) must be
saved to the current configuration before commencing
input adjustment.
Actual value / Desired value
1) Adjust the process or simulated input signal to a known
2) If 'Actual value' (in engineering units) is different from
3) Repeat steps 1 and 2 for a value above 50% of the
4) Repeat steps 1 to 3 for each input.
Reset adjustment
Select to reset 'Offset adjust' and 'Span adjust' (see next
page) to zero and to 1 respectively.
I/O Modules
A:- Analog i/p C: Relay
Alarm 1.1A, Positive
Relay B1
Totalizer 1.2 Intermediate
Relay B2
None, Positive
Relay B3
None, Positive
Relay B4
None, Positive
Relay B5
Relay B6 None, Positive
value below 50% of the engineering range.
expected, set 'Desired value' to the correct value ('Offset
adjust' and 'Span adjust' values are calculated
automatically).
engineering range.
4 CONFIGURATION...
ticked on entry to the
not
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