Emerson 20/20 service manual LED Blink Codes and Troubleshooting Guide 2

Page 78

Section 14 • Slide Calibration

Table 14-3. LED Blink Codes and Troubleshooting Guide (2 of 2)

Flash Pattern

Meaning

* = ON

- = OFF

 

 

 

 

 

 

The motor is overheated. The actuator motor will not

 

 

run until it cools. Once the motor cools, the actuator will

 

 

resume normal operation.

 

 

Motor overheating is sometimes a problem in hot

 

 

humid environments when process conditions demand

*--*--*-----------------

that the slide valve actuators reposition often. Solutions

are available; consult your Vilter authorized distributor

 

 

for details.

 

 

Another possible cause for this error is a stuck motor

 

 

thermal switch. The thermal switch can be tested by

 

 

measuring the DC voltage with a digital multimeter be-

 

 

tween the two TS1 wire pads (see Note 2). If the switch

 

 

is closed (normal operation) you will measure 0 Volts.

 

 

 

 

 

The 24V supply voltage is low. This will occur momen-

 

 

tarily when the actuator is powered up and on power

 

 

down.

*********************

If the problem persists, measure the voltage using a

digital multimeter between terminals 3 and 4 of the

 

 

small terminal block. If the voltage is less than 24V, the

 

 

problem is in the supply to the board.

 

 

If the voltage is >= 24V, replace the actuator..

 

 

 

 

 

The EEPROM data is bad. This is usually caused by loss of

 

 

24V power before the calibration procedure was com-

-********************

pleted. The actuator will not move while this error code

is being displayed. To clear the error, calibrate the actua-

 

 

tor. If this error has occurred and the cause was not loss

 

 

of 24V power during calibration, the EEPROM memory

 

 

is bad and the actuator will need to be replaced.

 

 

 

*****----*--------------

Microcontroller program failure. Please notify your

Vilter authorized distributor.

 

 

 

Note 2: The TS1 wire pads are where the motor thermal switch leads solder into the circuit board. They are clearly marked on the board silkscreen legend and are oriented at a 45° angle.

14 – 8

Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.8.5153

Image 78
Contents Vission 20/20 micro-controller Page Table of Contents TOC Digital I/O Board Layout Top Status BarCompressor Sequencing Event List Data Backup List of Tables and Figures END of TOC How to Use This Manual Critical Compressor Run Logic at Compressor Start Operational Flow ChartsRequirements to Start Compressor Compressor Amperage Load LimitingOperational Flow Charts 2 Installation Recommendations Proper Wiring SizingVoltage Source DC signals GroundingMixing Voltages Wiring Methods Correct Transformer Wiring MethodBest Practices Hardware Architecture OverviewDigital Input/Output I/O Digital I/O 1 Board Description TypeAnalog Inputs Refer to -2. Analog Inputs Motor CurrentDigital I/O 2 Analog Inputs 1Analog Outputs Digital & Analog I/O Boards LayoutAnalog Inputs 2 Digital I/O Board LayoutDigital Output Boards Digital Output Board LayoutDigital Input Boards Digital Input Board LayoutDigital In-Out Boards Digital Input-Output Board LayoutAnalog Input Boards Analog Input Board LayoutChannel Signal Analog Input Jumper TablesJP-13 JP-14 JP-15 JP-31 Analog Output Boards Analog Output Board LayoutMain Screen Main ScreenTop Status Bar Parameter Bar Unit Start Pop-Up Window Bottom Status Bar Splash Screen Menu Screen Navigation ButtonsMenu Screen Compressor Control Pulse Proportional ControlAuto-Cycle Proportional Band & SetpointVariable Frequency Drive VFD VFD One-Step Control MethodPumpdown Control Pulldown Control Stop Load and Force Unload Control ModeVolume Slide Position Offset Capacity Slide Triggered OutputsLoad Anticipating Oil ControlLiquid Injection Compressor Control Alarms and Trips Alarms and Trips SetpointsAlarms and Trips Safety Failure Messages Compressor InhibitsFalse Start Timers Timer SetpointsOil Separator Level #2 Safety Trip Delay Timers Blank Compressor Scheduling Scheduling SetpointCompressor Scheduling Compressor Sequencing Pressure Control SetpointsCFM Equipment List 10 4 / Blank Condenser Control Condenser Control SetpointStep Control VFD Settings Step Control Screen11 4 / Blank Service Options Digital OutputsAnalog Outputs Pressure and Temperature Inputs Instruments CalibrationMotor Current Remote CapacityAnalog Inputs 13 4 / Blank Slide Calibration Capacity Slide Valve PotentiometerVolume Slide Valve Potentiometer Slide Valve OperationSlide Valve Actuator Calibration for Optical Style Motors Photochopper Command Shaft Rotation Command Shaft Rotation Required By ActuatorSlide Valve Troubleshooting Guide Slide Valve Troubleshooting Guide 1Slide Valve Troubleshooting Guide 2 Slide Valve Actuator Troubleshooting Guide Blink Code LED Blink Codes and Troubleshooting Guide 1LED Blink Codes and Troubleshooting Guide 2 Pleted. The actuator will not move while this error codeTrend Chart Chart OperationTrend Data Storage Setup Trend Setup Screen15 4 / Blank Event List Event list Columns16 2 / Blank Input / Output Input/Output Screen17 2 / Blank Auxiliary Input / Output Digital InputsDigital Outputs Control 18 4 / Blank Configuration UnitsTime & Date Communications TouchscreenAnti-Recycle Language Restart On Power FailureCompressor Sequencing Model & RefrigerantCompressor Control Optional Function SelectionOil Cooling Condenser ControlOil Pump Motor Current DeviceDigital Inputs Analog Inputs Analog Outputs Configuration 19 10 / Blank Data Backup Save / LoadData Backup Factory Reset Migrate20 4 / Blank Maintenance ChecklistChart LogUser Access ApplyLogin Manage AccountsSecurity Access Levels Screen Security Levels22 4 / Blank Screen Features Help ScreenVersion Pop-Up Screen Twin Screw Control Twin Screw Control ScreenOperation Cool Compression Control Cool Compression Control ScreenControl Functions Cool Compression Control Functions ScreenAuto Load Timer Operational Differences from Single ScrewCool Compression Control

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