F901 Controller Manual
Page
20
of
27
EXAMPLE PID CONTROLLER CONFIGURATION
Controller components
•
Sensor (controller input): F901B Ethylene sensor, operating via Modbus RTU and sampling every 300 seconds
•
Actuator (controller output): Ethylene Generator, operating via Modbus TCP/IP, accepting control output as
the number of seconds between ethylene production peaks (short duration means higher production rate)
Create a new controller
In the Panel Configuration menu, press
New Panel
. Enter panel details:
•
Panel Name:
ETH PID
•
Panel Type:
PID Controller
•
Sensor Unit:
ppm
•
Interval:
150
•
Setpoint Min
0
, Max
500
•
Output Min
1
, Max
100
Note:
•
Control interval set to 150 seconds, as half of the sensor sampling interval (300 seconds)
•
Output Max and Setpoint Max should be set correspondingly to each other for best controller performance.
Add a sensor device
In the same Panel Configuration menu, press
New Device
. Enter sensor details:
•
Device Name:
Ethylene
•
Device Type:
Sensor
•
Communication:
Modbus RTU
•
Slave Addr:
50
•
Register Addr:
0
•
Register type:
Input
F901
CONTROLLER
MODBUS TCP/IP
MODBUS RTU
F901B GAS
SENSORS
ETHYLENE
GENERATORS
PID CONTROL LOOP
