Parker X-Flow FM-1407, Инструкции по эксплуатации

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Page 30 Instruction manual Parker X-Flow FM-1407 Rev - 11/2021
The picture below shows the basic controller diagram of the X-Flow™. It consists of a standard PID
controller with a number of add-ons.
Basically, when a faster or slower controller response is needed, only the controller gain Kspeed or Kp
has to be changed.
Kp (PIDKp)
Type Access Range FlowDDE Flowbus® Modbus® PDU
Float RW

0…1E+10 167 114/21 0xF2A8..0xF2A9/62121..62122
Proportional action of the PID controller.
Kspeed
Type Access Range FlowDDE Flowbus® Modbus® PDU
Float RW

0…1E+10 254 114/1 0xF2F0..0xF2F1/62193..62194
Ti (PIDTi)
Type Access Range FlowDDE Flowbus® Modbus® PDU
Float RW

0…1E+10 168 114/22 0xF2B0..0xF2B1/62129..62130
Integration action in seconds of the PID controller.
The value should not be changed.
Td (PIDTd)
Type Access Range FlowDDE Flowbus® Modbus® PDU
Float RW

0…1E+10 169 114/23 0xF2B8..0xF2B9/62137..62138
Differentiation action in seconds of the PID controller.
Default Value: 0.0
This value should not be changed.
Kopen (RespOpen0)
Type Access Range FlowDDE Flowbus® Modbus® PDU
Unsigned char RW

0…255 165 114/18 0x0E52/3667
Controller response when starting-up from 0% (when valve opens).
Value 128 is default and means: no correction.
Otherwise controller speed will be adjusted as follows:
(128-RespOpen0)
New response = old response * 1.05
∫
d
dt
+
K
speed
S
+
-
Curve
Corr.
Sensor
Control Valve
Flow
Setpoint
K
p
K
open
K
normal
K
stable
P
I
D