B&C Technologies DI-325 Industrial - Manual (Page 61)

OPERATING AND PROGRAMMING INSTRUCTIONS
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6.5.2 View status of outputs
The ‘View status of outputs’ screen can be used to check if the controller board is activating
an output. Viewing the status of an output can be done while the machine is running. Selecting a
module number and channel number is done in the same way as in the ‘View status of inputs’
screen (see chapter 6.5.1). The main difference between viewing the status of the inputs and
viewing the status of the outputs is the number of available outputs on the dryer controller itself.
The dryer controller has 8 relay outputs and 1 digital output. This means that if module number 0 is
selected, the channel number can be varied between 1 and 9.
6.5.3 Test outputs manually
As the name already says, this test program can be used to manually activate an output.
Because the user takes over control of all available outputs, password level 1 is necessary to be able
to run this test program. Also, if a program cycle is active, this cycle will be stopped to prevent the
dryer from restarting automatically if the user quits this test program.
Selecting a module and channel is done in the same way as selecting an output in the ‘View
status of outputs’ screen (see chapter 6.5.2 and chapter 6.5.1).
The screen will look the same as the ‘View status of outputs’ screen, with the difference that
the status of the output is controlled with the ENTER button. If the right output is selected by
setting the right module and channel number, the output will be in the ‘OFF’ state initially. When
the ENTER button is pushed, the output will be switched on, and the state will change to ‘ON’. The
output will stay in the ‘ON’ state as long as the ENTER button is pushed and will return to the off
state when the enter button is released.
The following example explains how to test the blower output. The blower output is output
number 7 on the dryer controller. If necessary, select module number 0 with the ARROW UP
and/or ARROW DOWN button. Module number 0 means testing the outputs on the dryer controller
itself. After that, select channel number 7 with the PLUS and/or MINUS buttons. Channel number 7
means output 7. If the module number is set to 0, and the channel number is set to 7, the blower
output is selected. If the ENTER button is not pushed, the output status will be ‘OFF’. If the
ENTER button is pushed, the controller will switch on the relay at output 7 and the state will go to
‘ON’.
6.5.4 Check power supply voltage
The dryer controller has an on-board facility to monitor the voltage supplied to the
controller. If the power supply voltage drops below the low voltage limit or rises above the high
voltage limit, all outputs will be switched off and an alarm message is displayed (see chapter 7,
Alarms).
When ‘Check power supply voltage’ is chosen in the ‘Test program menu’, the screen will
show the current power supply voltage. In case of an AC power supply, the display will how AC
voltage, otherwise it will show DC voltage.
Usually, the +24VDC connection should be on pin 1 and 0VDC should be on pin 2 of J8,
but if this is switched, the controller will work anyway. Only thing which is not working in this case
is ‘Check power supply voltage’. If the +24VDC is connected to pin 2, the value in this screen will
show ’?’