B&C Technologies DI-325 Industrial - Manual (Page 38)

OPERATING AND PROGRAMMING INSTRUCTIONS
8-7
If no overheat input is connected, this input should be connected to 24V, so it is always in
the ‘on’ state.
Input 10: Emergency stop and safety switches
If an emergency stop switch and other safety switches are separately connected to the
controller, input 10 should be used for this purpose. The controller will continuously check input 10
and if the input is in the ‘off’ state, message 1 will be displayed. If the emergency stop switch and
other safety switches are not separately connected, this input should be connected to 24V, so it is
always in the ‘on’ state.
Input 11: Error frequency inverter
This input is used in case the drum motor is controlled by a frequency inverter (see chapter
‘Configuration parameters’, parameter number 8). The controller will start to check the input about
3 seconds after the drum motor is started. If the drum motor has been running for 3 seconds, and
this input is in the ‘off’ state, message 3 will be displayed.
In some cases, for safety reasons, the signal coming from the inverter is a so-called pulse
train. This is done because in this case it is impossible to overrule the error contact by hardwiring it
to 24V. When this safety option is switched on by the machine manufacturer and the presence of an
inverter is configured with configuration parameter 8 and no correct pulse train is detected on this
input, the machine is stopped and message 4 will be displayed.
If no frequency inverter is present, this should be indicated with configuration parameter
number 8 (see chapter ‘Configuration parameters’). In this case, this input will not be checked and
no settings regarding an inverter can be done.
Input 12: Jog left button
This input is used to connect a jog button. Use configuration parameter 20 to indicate the
presence of jog buttons. Jogging of the drum can be done in case the machine isn’t running, the
door is closed and the emergency stop isn’t active. When input 12 is in the ‘on’ state, the output for
drum left direction will be activated.
Input 13: Jog right button
See input 12, but then for jogging in the right direction.
Input 14: Gas alarm input
If the machine is equipped with gas heating, this input can be used to connect the alarm
contact of the gas heater. The input is checked continuously and if the input is in the ‘on’ state, the
dryer is stopped and message 6 is displayed. If the gas alarm input is not used, this input should not
be connected, so it is always in the ‘off’ state.
Input 15: Input fire suppression
This input can be used to connect a fire suppression contact. The controller continuously
checks this input and if the input is in the ‘off’ state, the dryer is stopped and message 7 is
displayed. If the fire suppression in put is not used, this input has to be connected to 24V, so it is
always in the ‘on’ state.
Input 16: Clean filter warning
This input can be used to connect a sail switch, which can detect if the filter has to be
cleaned. The input will be checked when the heater and the blower motor are on. If both outputs are
on, no overheating is active and input 16 is in the ‘on’ state for 2 seconds, the message ‘Clean lint
filter’ will be displayed. If this input isn’t used, then it doesn’t have to be connected.