Bronkhorst®
Instruction Manual ES-FLOW™
9.17.116B
21
3.3.3.2 Controller
The
Controller
sub menu is only available if the control function of the instrument is enabled. This setting is part of the
instrument configuration at the factory.
Because controlling characteristics are optimized during manufacture, Bronkhorst strongly advises not to
change these parameters. If changing controller settings is absolutely necessary, it should be performed by or
under supervision of trained service personnel only.
In the
Controller
sub menu, the following parameters can be edited:
Parameter
Description
Supported values
Speed
Controller speed factor
0.001…99.999
Slope
Controller adjustment speed
0.0…3000.0 seconds
Mode
Control mode
see table below
Pid-Kp
PID controller proportional action
Pid-Ti
PID controller integration action
Pid-Td
PID controller differentiation action
Open from zero
Open from zero response
0…255
Normal step
Normal step response
0…255
Stable situation
Stable situation response
0…255
Master node
Node address of the master instrument
0…128
Slave factor
percentage of the measurement value of the master
instrument
0…100.0%
The following control modes are available:
Value
Description
rs232
Normal operation via RS232
bus/rs232
Normal operation via fieldbus or RS232
analog input
Normal analog operation
setpoint 0 perc.
Setpoint set to 0%
setpoint 100 perc.
Setpoint set to 100%
control idle
Controller disabled, valve frozen in current position
actuator 0 perc.
Controller disabled, valve closed
actuator 100 perc.
Controller disabled, valve fully open
actuator steering
Controller disabled, valve opening equal to setpoint (percentage)
fb slave
Acting as slave of other instrument on FLOW-BUS
analog slave
Acting as slave of other instrument on analog input
fb ana slave
Acting as slave of other instrument on FLOW-BUS, slave factor set by analog input signal
