I/O Module Configuration; Analog Inputs - ABB SM3000 User Manual

SM3000
Multipoint Videographic Recorder

6.7 I/O Module Configuration

Fig. 6.19 I/O Module Configuration
Note. The instrument detects the type of module fitted in each position automatically.

6.7.1 Analog Inputs

IM/SM3000–EN Rev. L
Set the mains rejection frequency used to electrical noise
induced on the signal lines by power supply cables.
Input Adjustment
Manually fine-tune inputs to remove process offset errors or
system scale errors.
Note.

Input adjustment frames appear only if recording is
enabled during configuration, i.e. the 'Disable recording in
configuration' check box is not ticked on entry to the
Configuration level – see Fig. 6.1, page 52.

Changes to the Analog Input Type (see Section 6.6.2,
page 89) 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
value below 50 % of the engineering range.
2. If 'Actual value' (in engineering units) is different from
expected, set 'Desired value' to the correct value ('Offset
adjust' and 'Span
automatically).
3. Repeat steps 1 and 2 for a value above 50 % of the
engineering range.
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.
6 Configuration
adjust' values are calculated
101