Pid Constant Setting; Alert Setting Value 1 To - Mitsubishi Q Series User Manual

3 SPECIFICATIONS

3.5.14 PID constant setting

(buffer memory address 35 to 37, 67 to 69: Un\G35 to Un\G37, Un\G67 to Un\G69)

3.5.15 Alert setting value 1 to 4

(buffer memory address 38 to 41, 70 to 73: Un\G38 to Un\G41, Un\G70 to Un\G73)
3 - 68
(1) Sets the proportional band (P), integral time (I) and derivative time (D) with
normal control for performing PID operation.
(2) For thermocouple input, set with temperature. For micro voltage, voltage and
current, set with % for full-scale.
(3) As the proportional band (P), integral time (I) and derivative time (D), set values
within the following ranges.
(a) For PI control, set the derivative time to "0".
(b) For PD control, set the integral time to "0".
(c) For P control, set the derivative time and the integral time to "0".
Item
Proportional
band (P) setting
Integral time (I)
setting
Derivative time
(D) setting
(1) Sets conditions to turn on alerts from 1 to 4.
(2) The setting value depends on alert type.
Before making this setting, refer to Section 3.2.10.
1) Input alert (upper limit input alert, lower limit input alert)
Setting value····Process value (PV)
2) Deviation alert (upper limit deviation alert, lower limit deviation alert)
Setting value····Deviation [Process value (PV) – Set value (SV)]
3) Deviation alert (upper/lower limit deviation alert, within-range alert)
Setting value····Absolute value of deviation [Process value (PV) – Set
value (SV)]
*1 A value less than 0 cannot be set to the Alert set value 1 to 4.
(3) The alert mode used in the alert 1 to 4 is set by mode setting of the alert 1 to 4
(buffer memory address: 192 to 195, 208 to 211).
(4) When setting a value out of the setting range or setting a value other than 0 as
alert setting value when the alert is not used ("0" is set in the alert mode setting),
a write error occurs, the error flag (Xn2) is turned on, and then the error code "4"
is stored in error code (buffer memory address: 0).
Addresses Default
value
CH1 CH2
35 67 100
36 68 400
37 69 100
*1
MELSEC-Q
Setting range
1 to full scale
Thermocouple
Micro voltage,
voltage, current (0.1 to 1000.0%)
0 to 32767(0.0 to 3276.7s)
0 to 32767(0.0 to 3276.7s)
(×0.1 )
1 to 10000
3 - 68