Testing Spray Controllers

The spray controller diagnostic screen allows you to toggle the controller LEDs and relays on and off, force the trigger and active output signals on and off, and monitor controller input states.

The Spray Controller module LEDs and relays default to normally off (relays open). During normal operation, the LEDs remain off and the relays remain open during normal operation. When a fault occurs, the appropriate LED lights and the appropriate relay closes. The LED and relay affected return to their normal state when the fault is resolved.

NOTE: The failsafe mode can be changed to closed, if desired, through the Nordson Service screen for the spray controller. If this is done the relays will not open if a fault occurs when spray controller power is lost or shut off.

Toggling LEDs and Relays

Use this procedure to toggle the LEDs and relays to make sure they are functioning.

CAUTION: Shut off the coating system before testing the Spray Controller relays. Testing the relays with the coating system operating will generate an alarm and shut down the system.

  1. Icon_TOOLSGREEN.JPG Touch the information and setup bar on the appropriate Spray Controller faceplate.

  2. Icon_SprayController.jpg Select Spray Controller Configuration from the drop-down menu.

  3. Icon_Diagnostics.JPG Touch the Diagnostics button at the top of the Spray Controller Configuration window.

NOTE: To prevent an operator from accidentally tripping the relays and shutting down the coating system, you must turn on the Test Mode before you can use it.

  1. Icon_LightBulb.jpg Touch the Test Mode button toggle it On. The switch backgrounds change from gray to green and the switches move if necessary to show the current operating state of the LEDs and relays. The spray monitor is now in diagnostics mode.

LEDs.jpg LEDs

 

Icon_Relays.jpg Relays

 

  1. Touch the switches as necessary to set the LEDs and/or relays to the desired state. The actual LEDs and relays on the spray monitor will not change until you perform step 5.
    Switch Status

  1. Icon_RESET_BUTTON.JPG Touch the test buttons to test the LEDs or relays. To return the LEDs and relays to their actual operating state, touch the button again.

Controller Outputs

Icon_Trigger.jpg

Button_Off.jpg Toggles the Trigger Output on and off.

Icon_LightBulb.jpg

Button_Off.jpg Toggles the Active Output on and off.

Use these buttons to test the functioning of the outputs.

Controller Inputs

The Controller Inputs indicators show the state of the inputs connected to the controller. When the indicator is bright green the controller is receiving a signal.