FX1S-30MR-ES/UL MITSUBISHI, FX1S-30MR-ES/UL Datasheet - Page 225

• Manufacturer Part Number: FX1S-30MR-ES/UL
• Description: PLC, 16 IN, 14 RELAY OUT, 110V/2
• Manufacturer: MITSUBISHI

Specifications of FX1S-30MR-ES/UL

• No. Of Analogue Inputs: 16
• No. Of Analogue Outputs: 14
• Ip/nema Rating: IP10
• Approval Bodies: CE, CUL, UL
• External Depth: 49mm
• External Length / Height: 90mm
• External Width: 60mm
• Mounting Type: Panel

FX Series Programmable Controlers
Forward
Reverse
PID Equations
PV
EV
EV
SV = the Set Point Value (S
PV
PV
PV
PV
MV
Please see the Parameter setup section for a more detailed description of the variable
parameters and in which memory register they must be set.
Forward and Reverse operation (S
The Forward operation is the condition where the Process Value, PV
Point, SV. An example is a building that requires air conditioning. Without air conditioning, the
temperature of the room will be higher than the Set Point so work is required to lower PV
The Reverse operation is the condition where the Set Point is higher than the Process Value.
An example of this is an oven. The temperature of the oven will be too low unless some work
is done to raise it, i.e. - the heating element is turned On.
The assumption is made with PID control that some work will need to be performed to bring
the system into balance. Therefore, MV will always have a value. Ideally, a system that is
stable will require a constant amount of work to keep the Set Point and Process Value equal.
MV = the change in the Output
nf
n
n-1
n
nf
nf-1
nf-2
n
= the current Error Value
= the current Process Value (S
= PV
= the calculated Process Value
= the current Output Manipulation Value (D)
PV
SV > PV
= the previous Error Value
EV
MV
MV
= the previous Process Value
= the second previous Process Value
EV
Manipulation Values
nf
n
n
n
n
n
MV
MV
> SV
=
D
D
+
=
=
=
n
n
PV
SV PV
=
=
nf
=
=
PV
------------------------------ -
T
nf
------------------------------ - 2PV
T
–
K
K
S
–
S
MV
MV
+
P
P
nf-1
+
SV
T
K
T
K
nf
D
EV
EV
D
D
- PV
D
T
n
n
T
D
–
–
D
n
EV
1
EV
2PV
)
–
)
n 1
n 1
–
nf 1
–
–
nf 1
+
2
–
–
+
)
T
----- - EV
T
3
PV
+
S
+1, b0)
T
----- - EV
I
T
S
I
PV
nf
n
–
nf
+
n
PV
+
+
D
PV
D
n
nf 2
n
–
nf 2
–
T
T
T
D
K
K
D
+
D
S
I
n-1
P
D
n
------------------------------ -
T
= the Integral Time Constant
+
= the Time Derivative Constant
= the Sampling Time
= the Proportion Constant
S
= the Derivative Filter Constant
= the Derivative Value
------------------------------ - D
T
K
= the previous Derivative Value
+
the Input Filter
S
D
K
K
+
D
D
T
K
D
D
T
T
D
D
T
D
D
n 1
–
nf
n 1
–
, is greater than the Set
Applied Instructions 5
5-103
nf
.