Mitsubishi L Series User Manual

112
(2) Concept of integration cycle
Set the integration cycle according to the analog output cycle of the flow meter connected to the A/D converter
module. In addition, set this cycle as an integral multiple of the updating cycle of CH Scaling value (digital
operation value) (Un\G54 to Un\G57).
The updating cycle of CH Scaling value (digital operation value) (Un\G54 to Un\G57) equals to the conversion
cycle of the specified A/D conversion method. The following table lists the conversion cycle of each A/D
conversion method.
*1 In the flow amount integration function, the conversion speed can be set in 1ms. Therefore, the conversion speed is
1ms.
*2 The value after the decimal point is rounded off.
If the setting value of CH Integration cycle setting (Un\G1308 to Un\G1311) is not an integral multiple of the
updating cycle of CH Scaling value (digital operation value) (Un\G54 to Un\G57), the maximum value of an
integral multiple less than the value set in CH Integration cycle setting (Un\G1308 to Un\G1311) is calculated as
the integration cycle.
Check the calculated integration cycle, which is stored in CH Integration cycle monitor value (Un\G1348 to
Un\G1351).
When the integration cycle is calculated with the following settings
• A/D conversion enable in CH1 to CH3
• "Averaging process setting" is "0: Sampling processing"
• "Integration cycle setting" is 5000
Since the updating cycle of CH Scaling value (digital operation value) (Un\G54 to Un\G57) is 3ms, the
integration cycle is determined as 4998ms (the maximum cycle of an integral multiple of 3ms).
If CH Integration cycle setting (Un\G1308 to Un\G1311) is less than the updating cycle of CH Scaling value (digital
operation value) (Un\G54 to Un\G57), the flow amount integration function turns disabled and an error (error code: 212)
occurs.
A/D
conversion
method
Conversion cycle
Sampling
processing
Conversion speed
*1
× Number of used channels (ms)
Count average
processing
Time average
processing
Number of times set in "Time Average/ Count Average/Moving Average" × Conversion speed
*1
×
Number of used channels (ms)
Moving average
processing
Conversion speed
*1
× Number of used channels (ms)
Time set in "Time Average/Count Average/Moving Average"
Number of used channels
Conversion
speed
*1
Number of
used channels (ms)
*2
Ex.

Mitsubishi L Series Specifications

General

Brand	Mitsubishi
Model	L Series
Category	Engine
Language	English