Nordson EFD PICO Touch User Manual

PICO Toµch Controller
44 www.nordsonefd.com info@nordsonefd.com 800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.
Troubleshooting
Problem Possible Cause Corrective Action
Fluid leaks Valve not powered ON Verify that the valve POWER is ON.
Insufcient closing voltage Increase the closing voltage of the valve.
Improper prole selected If RAMP is not selected for the open and close
WAVE PROFILE settings, verify that the selected
prole is correctly programmed.
Worn or damaged valve Refer to the troubleshooting section of the valve
operating manual.
Damaged driver Contact Nordson EFD.
Valve will not power ON Loose or damaged cable / connection Verify that both valve input cables are connected.
Check the integrity of all cables and connections.
Alarm condition present Correct and clear any pending alarms.
System Alarm: Piezo Driver FAULT Check for a Piezo Driver FAULT alarm. If this
continues to occur, contact Nordson EFD.
Improper prole selected If RAMP is not selected for the open and close
WAVE PROFILE settings, verify that the selected
prole is correctly programmed.
Switch off the controller and wait 5 seconds for the
valve to fully discharge. Disconnect and reconnect
all cables to the controller, then switch on the
controller. If a system restart does not correct the
problem, contact Nordson EFD.
Controller not responding
to an initiate signal
Alarm condition present When an alarm condition is present, the controller
will not initiate. Correct and clear any pending
alarms.
Problem with initiate signal integrity Verify that the signal being user on the USET (Initiate)
circuit is a clean, bounce-free signal (5-24VDC).
Problem with wiring integrity Ensure that the wiring is correctly stripped and that
the conductors are making contact on the 15 pin
connector
Valve not powered ON Verify that the valve POWER is ON.
LCD not responding to
touches
LCD requires calibration Refer to "Calibrating the LCD" on page 38 to
recalibrate the LCD.
System Alarm: LCD Fault Switch off the controller and wait 5 seconds for the
valve to fully discharge, then switch on the controller.
System Alarm: No Valve
Detected
Loose or disconnected valve cable Verify that both valve input cables are connected.
Check the integrity of cables and connections.
System Alarm: Stack Over
Temperature
Piezo stack temperature exceeds
operating limits
Reduce the operating frequency of the valve.
System Alarm: Piezo
Driver FAULT
Piezo driver exceeds operating limits Reduce the operating frequency of the valve.
Switch off the controller and wait 5 seconds for the
valve to fully discharge. Disconnect and reconnect
all cables to the controller, then switch on the
controller. If a system restart does not correct the
problem, contact Nordson EFD.
If RAMP is not selected for the open and close
WAVE PROFILE settings, verify that the selected
prole is correctly programmed.
Clogged lter Clean or replace the lter. Refer to the illustration
provided under "Filter" on page 43.
Continued on next page

Nordson EFD PICO Touch Specifications

General

Brand	Nordson EFD
Model	PICO Touch
Category	Controller
Language	English