What to do if Nordson EFD ValveMate 7140 is not responding to the initiate signal?
First, ensure the Nordson EFD Controller is in RUN mode. If it is, consider that if the dispense time is set at or below 0.010 seconds, the pneumatic circuit's response delay might prevent the valve from opening. Try increasing the dispense time. Also, ensure that the signal breaks cleanly before initiating the next signal.
Why does the Nordson EFD Controller LED toggle and not accept the initiate signal?
This issue occurs when the air pressure to the ValveMate 7140 drops below 4.1 bar (60 psi). To resolve this, increase the input pressure to 4.8 bar (70 psi) and press the Mode button to reset. If the problem continues, verify that other devices, like air cylinders, aren't causing a pressure drop in the ValveMate 7140 input air line.
What does it mean if the LED is blinking on my Nordson EFD Controller?
A blinking LED indicates that the external alarm is enabled and the circuit is open. Check for the cause of the fault or disable the external alarm.
Warning and precautions for electrical hazards during operation and servicing.
Specification for maximum air input pressure and procedure for releasing pressure.
Warning about hot surfaces and protective measures to avoid burns.
Physical dimensions and weight of the ValveMate 7140 controller.
Details on electrical power input, connector type, and external power adapter.
Information on air input, consumption, feedback, and initiate circuits.
Ambient operating conditions, installation category, and product classification.
Explanation of front panel buttons and their operational modes (RUN, SETUP, STEADY, TEACH, PURGE).
Description of indicator lamps on the front panel and their operational status indications.
Overview of advanced user setup functions like alarm settings and pressure units.
Details and dimensions for the optional panel mount bracket kit for panel mounting.
Description of the 10-pin terminal strip, its inputs (5-24 INIT, CC INIT) and outputs.
Details on alarm output circuit and using CC INIT for external alarm input.
Explanation of the End-of-Cycle feedback circuit functionality.
Information on the 24 VDC courtesy power output for signaling purposes.
Diagram showing external wiring connections for the controller's inputs and outputs.
Detailed electrical schematic illustrating I/O connections.
Procedure for connecting the plant air supply to the ValveMate 7140.
Instructions for connecting actuating air and nozzle air hoses.
How to make time adjustments while the controller is in RUN mode.
Steps to set the controller to STEADY mode for timer override.
Guide for setting dispense time using the TEACH mode.
Procedures for purging the spray valve with or without nozzle air.
Issues with LED display toggling and failure to accept initiate signal.
Problems with the unit not responding to initiate signals, possibly due to mode or timing.
Troubleshooting steps for an inoperative timer, checking mode and signal integrity.
Causes and solutions for a blinking LED, often related to external alarms.
List of available replacement parts with part numbers and descriptions.
Details of the one-year limited warranty for the ValveMate 7140 controller.
Limitations on warranty coverage, including merchantability and consequential damages.
Warning and precautions for electrical hazards during operation and servicing.
Specification for maximum air input pressure and procedure for releasing pressure.
Warning about hot surfaces and protective measures to avoid burns.
Physical dimensions and weight of the ValveMate 7140 controller.
Details on electrical power input, connector type, and external power adapter.
Information on air input, consumption, feedback, and initiate circuits.
Ambient operating conditions, installation category, and product classification.
Explanation of front panel buttons and their operational modes (RUN, SETUP, STEADY, TEACH, PURGE).
Description of indicator lamps on the front panel and their operational status indications.
Overview of advanced user setup functions like alarm settings and pressure units.
Details and dimensions for the optional panel mount bracket kit for panel mounting.
Description of the 10-pin terminal strip, its inputs (5-24 INIT, CC INIT) and outputs.
Details on alarm output circuit and using CC INIT for external alarm input.
Explanation of the End-of-Cycle feedback circuit functionality.
Information on the 24 VDC courtesy power output for signaling purposes.
Diagram showing external wiring connections for the controller's inputs and outputs.
Detailed electrical schematic illustrating I/O connections.
Procedure for connecting the plant air supply to the ValveMate 7140.
Instructions for connecting actuating air and nozzle air hoses.
How to make time adjustments while the controller is in RUN mode.
Steps to set the controller to STEADY mode for timer override.
Guide for setting dispense time using the TEACH mode.
Procedures for purging the spray valve with or without nozzle air.
Issues with LED display toggling and failure to accept initiate signal.
Problems with the unit not responding to initiate signals, possibly due to mode or timing.
Troubleshooting steps for an inoperative timer, checking mode and signal integrity.
Causes and solutions for a blinking LED, often related to external alarms.
List of available replacement parts with part numbers and descriptions.
Details of the one-year limited warranty for the ValveMate 7140 controller.
Limitations on warranty coverage, including merchantability and consequential damages.
General| Model | ValveMate 7140 |
|---|---|
| Type | Valve Controller |
| Input Voltage | 100-240 VAC |
| Input Frequency | 50/60 Hz |
| Output | 24 VDC |
| Output Voltage | 24 VDC |
| Number of Valves Controlled | 1 |
| Voltage Range | 100-240 VAC |
| Communication Interface | RS-232 |
| Valve Compatibility | Nordson EFD Valves |
| Control Type | Digital |
| Operating Temperature Range | 0°C to 40°C (32°F to 104°F) |
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