Mitsubishi Electric MELSEC iQ-R Series User Manual page 38

Operation example of the rate control function
The following figure and table show an operation example when the rate control function is used for CH1 to CH3.
Setting item
D/A conversion enable/disable setting
Rate control enable/disable setting
Increase digital limit value
Digital value
The increments of the analog output value by conversion cycle for each channel with the above settings are as follows:
• CH1: 4500 (CH1 Increase digital limit value  Number of D/A conversion enabled channels)
• CH2: 3000 (CH2 Increase digital limit value  Number of D/A conversion enabled channels)
• CH3: 1500 (CH3 Increase digital limit value  Number of D/A conversion enabled channels)
(Analog output)
<CH1>
1.25V
Change of the internal
digital value
<CH2>
1.25V
Change of the internal
digital value
<CH3>
1.25V
Change of the internal
digital value
(Channel for the conversion)
(Buffer memory)
'CH1 Digital value'
(Un\G460)
'CH2 Digital value'
(Un\G660)
'CH3 Digital value'
(Un\G860)
1 FUNCTIONS
36
1.10 Rate Control Function
CH1 setting
Enable
Enable
1500
Changed from 4000 to
16000
V
5V
4000 8500 13000
Difference
+4500 +4500
between
the changes
V
5V
4000 7000
Difference
+3000 +3000
between
the changes
V
5V
4000 5500
Difference
+1500 +1500
between
the changes
2 3 1 2 3 1 2 3 1 2 3
Conversion speed = 10μs
Conversion cycle = 30μs
4000 (1.25V)
4000 (1.25V)
4000 (1.25V)
CH2 setting
Enable
Enable
1000
Changed from 4000 to
16000
16000
+3000
10000 13000 16000
+3000 +3000
7000 8500 10000 11500
+1500 +1500 +1500
1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2
16000 (5.0V)
16000 (5.0V)
16000 (5.0V)
CH3 setting
Enable
Enable
500
Changed from 4000 to
16000
t
t
t
13000 14500 16000
+1500 +1500 +1500
CH4 setting
Disable
Disable
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