B&C Technologies DI-325 Industrial - Manual (Page 60)

OPERATING AND PROGRAMMING INSTRUCTIONS
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(31) Blower clean time
When a program is started the output for an optional clean signal (like an air blast) for the
blower will be activated (output 3). This parameter is the number of seconds the output will be on
when starting a program.
(32) Blower WYE del.
If the machine is equipped with a star/delta switch to start the blower motor this parameter is
the delay for switching the blower star/delta switch from off to on after restarting the blower. For
more details, see chapter 2.3.2, output 4.
(33) Del. check airflow
When a program is started the controller will check if the airflow switch (input 3) is in the
‘off’ position. After that the blower will be started. After starting the blowers the airflow switch
should go to the ‘on’ position within a given period otherwise an alarm will be displayed. This
parameter is the delay interval between the moment the blower starts and the moment the airflow
switch should be in the ‘on’ position.
6.5 Test program menu
To be able to track malfunctions and to check correct functioning of all inputs and outputs,
the DQ 01 controller is equipped with various test functions. These test functions can help service
staff to find malfunctioning inputs or outputs faster.
If the item ‘Test program menu’ is selected from the main menu, this menu will be
activated. In this menu an item can be selected with the ARROW UP and/or ARROW DOWN
button. Confirming the choice of an item must done with the ENTER button.
6.5.1 View status of inputs
In this screen all available inputs can be monitored. When the screen is activated, the
module number will be set to 0. Module 0 is the controller itself. If extension boards are connected,
an extension board can be selected with the ARROW UP and/or ARROW DOWN button. If no
extension boards are connected, the arrow buttons will not be visible. Module number 1 is the
extension board with address number 1; module 2 is the extension board with address 2, and so on.
See chapter 2.2 for an explanation of how to set-up an address of an extension board.
After selecting a module number, an input number can be chosen with the PLUS and
MINUS buttons. The dryer controller itself has 16 inputs; extension boards each have 8 inputs. If
module number 0 is selected, the input number can vary between 1 and 16. If an extension board
(module number 1 to 8) is selected, the input number can vary between 1 and 8.
On the lower line of the display, the current status of the input is shown. If an input receives
a 24V signal the status of the input will be ‘ON’ and if no signal is received on the input, the status
of the input will be ‘OFF’.
The following example will explain how to test the ‘door closed’ input. The input for door
closed is input 1 on the dryer controller. To check the status of this input first select module number
0 with the ARROW UP and/or ARROW DOWN button. Module number 0 means viewing the
inputs on the dryer controller itself. After that select channel number 1 with the PLUS and/or
MINUS buttons. Channel number 1 means input 1. If the module number is set to 0, and the
channel number is set to 1, the input status of the ‘door closed’ input is shown. If the door is closed,
the status of the input should be ‘ON’. If the door is opened, the status of the input should change to
‘OFF’.