Changing the digital output to "PWM"
1. Select "Type: " with the [Up] and [Down] buttons. Confirm
with [OK].
2. Select "PWM" with the [Up] and [Down] buttons. Confirm with
[OK].
– One additional row is shown.
Assigning the parameter value for an output
The output range of the controller is 0 % to 100 %, so it is not
necessary to assign the parameter value for an output.
The only parameter that can be changed is the duration of one
pulse for 100 % output.
Changing the duration of one pulse for 100 % output
1. Select "Period [s]:
" with the [Up] and [Down] buttons.
Confirm with [OK].
2. Change the value for the duration of one pulse with the [Up],
[Down], [Left] and [Right] buttons. Confirm with [OK].
9.6.6 Alarm sources...
C2 Alarm sources...
►
FCL:
pH:
Temp.:
FCL
The controller does not react or stop on an
---------
FCL alarm
pH
The controller stops, if the lower or upper
Up/Low
alarm limit is reached.
Temp.:
The controller stops, if the upper alarm
Upper
limit is reached.
The upper and lower limits for triggering an alarm are set in the
parameter setup menu. See
9.5.4
The behaviour of the controller can be defined for every
parameter alarm separately.
Changing the behaviour of the controller
1. Select the desired parameter with the [Up] and [Down]
buttons. Confirm with [OK].
2. Change the parameter alarm value with the [Up] and [Down]
buttons. Confirm with [OK].
– The controller stops when the chosen alarm occurs.
9.6.7 Reset state
Resetting the state of the controller
1. Select "Reset state" with the [Up] and [Down] buttons.
2. Confirm with [OK] to reset the state of the controller.
– The controller value is set to 0 %.
– For the PID controller, all three parts are set to 0 (P = 0, I =
0, D = 0).
26
------------
Up/Low
Upper
Alarm settings...
.
9.7 USB menu / Data transfer
The USB menu is activated when a USB stick is plugged in the
USB slot.
USB data transfer
Copy results
►
Delete results
Copy log/cfg
Delete log/cfg
Update software
Copy license
Config backup
Config restore
Copy results
All data regarding the parameters and controllers
are copied to the USB stick.
Delete results
All data regarding the parameters and controllers
are deleted.
Copy log/cfg
All data regarding the system logfiles are copied
to the USB stick.
Delete log/cfg
All system logfiles are deleted.
Update softwareThe software of the CU 382 control unit can be
updated in the field with an USB stick. A file
called "image.hex" has to be in the root directory
of the USB stick.
Copy license
A new license file for the CU 382 is copied from
the USB stick.
Config backup Download configuration data
Config restore Upload configuration data
Copying all data to the USB stick
1. Select "Copy results" with the [Up] and [Down] buttons.
2. Confirm with [OK] to copy all data to the USB stick.
3. The copied data are stored in a result file in .txt format. See
9.7.1 Result
file.
Deleting all data
1. Select "Delete results" with the [Up] and [Down] buttons.
2. Confirm with [OK] button to delete the data.
Copying all logfiles to the USB stick
1. Select "Copy log/cfg" with the [Up] and [Down] buttons.
2. Confirm with [OK] to copy the data to the USB stick.
Deleting all logfiles
1. Select "Delete log/cfg" with the [Up] and [Down] buttons.
2. Confirm with [OK] to delete the logfiles.
Updating the software
1. Select "Update software" with the [Up] and [Down] buttons.
2. Press the [Function] button and keep pressed until the
message "Update OK" appears. The CU 382 control unit
restarts.
3. Remove the USB stick.
Downloading the configuration data
1. Select "Config backup" with the [Up] and [Down] buttons.
– All configuration data are copied from the USB stick.
Uploading the configuration data
1. Select "Config restore" with the [Up] and [Down] buttons.
– All configuration data are loaded to the USB stick.