Bronkhorst®
Instruction Manual ES-FLOW™ 1xxC
9.17.153A
25
Fsetpoint
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
RW
0…3.4E+38
206
33/3
0xA119…0xA11A/ 41241…41242
Floating point variant of
Setpoint
.
Fsetpoint
shows the setpoint in the capacity unit for which the instrument is set. Like
Fmeasure
,
Fsetpoint
is dependent of
Capacity
,
Capacity 0%
,
Capacity Unit
and
Sensor Type
.
Setpoint Slope
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned int
RW
0…30000
10
1/2
0x0022/35
The value of this parameter represents the time it would take to adjust the setpoint if it were changed from 0 to 100%. This
feature can be used to smooth 'nervous' controller behavior, e.g. to reduce setpoint overshoot or undershoot.
The supported range corresponds to 0…3000 seconds. Default value = 0.
Example:
If
Setpoint Slope
= 100 it will take 10 seconds to adjust the setpoint if it is changed from 0 to 100%. A setpoint change of 20%
will take (20%/100%)*10 seconds = 2 seconds.
Analog Input
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned int
R
0…65535
11
1/3
0x0023/36
This parameter contains a digital translation of the analog input signal (if applicable).
Valve Output
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned long
RW
0…
16777215
55
114/1
0xF208…0xF209/61961…61962
This parameter represents the controller output signal for control valve operation.
6.1.1.2
Secondary outputs
Temperature
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
R
-250…500
142
33/7
0xA138…0xA139/41273…41274
This parameter returns the internal temperature in the instrument housing in °C.
6.1.2
Alarms
Alarm settings are most easily accessible using FlowSuite, FlowPlot or FlowView or a Bronkhorst® readout and control
unit.
The built-in alarm functionality can be used to handle different alarm types:
·
system errors and warnings
·
min/max alarms
·
response alarms
·
batch alarms
·
master/slave alarms
The alarm type can be set with parameter
Alarm Mode
. When an alarm is activated, the type can be read out using parameter
Alarm Info
. An automatic setpoint change can be set using the parameters
Alarm Setpoint Mode
and
Alarm New Setpoint
. It is
also possible to set an alarm delay, to prevent overreaction to small disturbances, using parameter
Alarm Delay Time
. The
methods by which an alarm can be reset are controlled by
Reset Alarm Enable
.
