Mitsubishi Q Series User Manual

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MELSEC-Q
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)
(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".
Addresses
Item
CH1 CH2
Default
value
Setting range
Thermocouple
1 to full scale
(×0.1
)
Proportional
band (P) setting
35 67 100
Micro voltage,
voltage, current
1 to 10000
(0.1 to 1000.0%)
Integral time (I)
setting
36 68 400 0 to 32767(0.0 to 3276.7s)
Derivative time
(D) setting
37 69 100 0 to 32767(0.0 to 3276.7s)
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)
(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
*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).

Mitsubishi Q Series Specifications

General

I/O Points	Up to 4096 points
Communication	Ethernet, RS-232, RS-485
I/O Modules	Digital, Analog, Specialized
Programming Language	Function Block Diagram, Structured Text
Power Supply	24V DC, 100-240V AC
Operating Temperature	0°C to 55°C
Shock Resistance	147 m/s2 acceleration, 3 times in each of X, Y, and Z directions
Program Capacity	Up to 252K steps