What causes a 'no LCD display' issue on SMC Networks Valve Positioners?
A blank LCD display can occur due to several reasons: * The input current might be disconnected; check that wires are connected to the positioner. * There might be no output from the input current power supply; check the output current of the input current generator. * An out-of-range input current power may be supplied; apply the correct input current power.
General| Input Signal | 4-20 mA |
|---|---|
| Type | Electro-pneumatic |
| Supply Pressure | 1.4-7 bar |
| Protection | IP65 |
| Ambient Temperature | -20°C ~ +80°C |
| Housing Material | Aluminum |
Explains hazard levels, user responsibility, and need for trained personnel.
Covers precautions for special conditions, warranty terms, and compliance requirements.
Provides instructions and warnings for securely mounting the positioner onto an actuator.
Details feedback lever connection and piping for air supply.
Provides crucial safety warnings and procedures for electrical wiring.
Covers safety for explosion-protected environments and associated barriers.
Guides through initial parameter changes, feedback lever check, and auto calibration.
Details the process for calibrating input current values.
Explains how to switch between Auto, Manual, and Parameter modes.
Describes using the positioner in automatic and manual control modes.
Covers actuator type, direction, and split range settings.
Details zero/span, PID, and alarm settings.
Explains analog output and various calibration functions.
Guides setting actuator direction, split range, and zero/span.
Covers forced close/open, dead band, and valve characteristics.
Details PID, alarm, and analog output configuration procedures.
Outlines procedures for routine maintenance and checking the positioner.
Provides handling advice, air supply requirements, and environmental considerations.
Lists common problems, their causes, and countermeasures.
Details specific error codes and check codes with solutions.
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