Eclipse UDC2500 Limit - Table 7-5 Troubleshooting Power Failure Symptoms

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Troubleshooting/Service

8/05 UDC2500 Universal Digital Limit ControllerProduct Manual 79

Procedure #1

Table 7-5 explains how to troubleshoot power failure symptoms.

Table 7-5 Troubleshooting Power Failure Symptoms

Step What to do How to do it

Check the AC line voltage. Use a voltmeter to measure the AC voltage

across terminals L1 and L2 on the rear

terminal panel of the controller.

Check the earth ground connection.

Make sure the chassis plugs

into the rear of the case

properly.

Withdraw the chassis and visually inspect the

controller board and the inside of the case.

Check the system for Brown-

outs, heavy load switching, etc.,

and conformance to installation

instructions.

Refer to

Section 2 - Installation.

Change Power board. Installation instructions supplied with new

board.

Main Page

Table of Contents4
Introduction11
Overview11
Figure 1-1 UDC2500 Operator Interface12
Function of Keys13
Process Instrument Explorer Software14
Figure 1-2 Screen Capture of Process Instrument Explorer Running on a Pocket PC14
Figure 1-3 Depiction of Infrared Communications15
CE Conformity (Europe)16
Installation17
Overview17
Condensed Specifications18
Table 2-1 Condensed Specifications18
Model Number Interpretation21
Figure 2-1 Model Number Interpretation22
Limit and Alarm Relay Contact Information23
Table 2-2 Limit Relay Contact Information23
Table 2-3 Alarm Relay Contact Information23
Mounting24
Figure 2-2 Mounting Dimensions (Not to Scale)24
Table 2-4 Mounting Procedure25
Figure 2-3 Mounting Method25
Wiring26
Electrical Considerations26
Table 2-5 Permissible Wiring Bundling27
Wiring Diagrams28
Figure 2-4 Composite Wiring Diagram28
Figure 2-5 Mains Power Supply29
Figure 2-6 Input 1 Connections30
Figure 2-7 Electromechanical Relay Output31
Figure 2-8 Solid State Relay Output31
Figure 2-9 Open Collector Output32
Figure 2-10 RS-422/485 Communications Option Connections32
Table 2-6 Terminals for Connecting a UDC to a MDI Compliant Hub or Switch33
Table 2-7 Terminals for Connecting a UDC Directly to a PC Utilizing a Straight-Through Cable33
Figure 2-11 Ethernet Communications Option Connections33
Figure 2-12 Auxiliary Output and Digital Inputs Option Connections34
Limit Control Application Diagram35
Figure 2-14 Transmitter Power for 4-20 Ma - 2 Wire Transmitter Using Auxiliary Output35
Figure 2-15 Limit Controller Application Diagram35
Configuration36
Overview36
Table 3-1 Configuration Topics36
Configuration Prompt Hierarchy37
Table 3-2 Configuration Prompt Hierarchy37
Configuration Procedure38
Table 3-3 Configuration Procedure38
Lock Set up Group39
Table 3-4 LOCK Group Function Prompts39
Limit Set up Group40
Table 3-5 LIMIT Group Function Prompts40
Input 1 Set up Group41
Table 3-6 INPUT 1 Group Function Prompts41
Options Set up Group45
Table 3-7 OPTION Group Function Prompts45
Communications Set up Group47
Table 3-8 Communications Group Function Prompts47
Alarms Set up Group50
Table 3-9 ALARMS Group Function Prompts50
Display Set up Group54
Table 3-10 DISPLY Group Function Prompts54
Configuration Record Sheet55
Operating the Limit Controller56
Overview56
Operator Interface57
Entering a Security Code57
Figure 4-1 Operator Interface57
Lockout Feature58
Table 4-1 Procedure to Enter a Security Code58
Monitoring Your Limit Controller59
Table 4-2 Annunciators59
Table 4-3 Error Messages60
Operating Your Limit Controller61
Table 4-4 Using Contact Input Option63
Alarm Setpoints64
Table 4-5 Procedure for Displaying Alarm Setpoints64
Input Calibration65
Overview65
Minimum and Maximum Range Values66
Table 5-1 Voltage, Milliamp and Resistance Equivalents for Input 1 Range Values66
Preliminary Information68
Table 5-2 Equipment Needed68
Figure 5-1 Input 1 Wiring Terminals68
Input 1 Set up Wiring69
Table 5-3 Set up Wiring Procedure for Thermocouple Inputs Using an Ice Bath69
Figure 5-2 Wiring Connections for Thermocouple Inputs Using an Ice Bath69
Table 5-4 Set up Wiring Procedure for Thermocouple Inputs Using Thermocouple Source70
Table 5-5 Set up Wiring Procedure for RTD Inputs70
Figure 5-3 Wiring Connections for Thermocouple Inputs Using Thermocouple Source70
Figure 5-4 Wiring Connections for RTD (Resistance Thermometer Device)70
Table 5-6 Wiring Connections for Radiamatic, Thermocouple Differential, Millivolts or Volts71
Figure 5-5 Wiring Connections for Radiamatic, Millivolts, Volts or Thermocouple Differential71
Table 5-7 Set up Wiring Procedure for 0 to 10 Volts72
Table 5-8 Set up Wiring Procedure for Milliampere Inputs72
Figure 5-6 Wiring Connections for 0 to 10 Volts72
Figure 5-7 Wiring Connections for 0 to 20 Ma or 4 to 20 Ma Inputs72
Input 1 Calibration Procedure73
Table 5-9 Input 1 Calibration Procedure73
Restore Input Factory Calibration74
Table 5-10 Restore Input Factory Calibration75
Output Calibration77
Overview77
Auxiliary Output Calibration77
Table 6-1 Set up Wiring Procedure for Auxiliary Output78
Figure 6-1 Wiring Connections for Calibrating Auxiliary Output78
Restore Output Factory Calibration79
Table 6-2 Auxiliary Output Calibration Procedure79
Table 6-3 Restore Factory Calibration80
Troubleshooting/Service81
Overview81
Troubleshooting Aids82
Table 7-1 Procedure for Identifying the Software Version83
Power-Up Tests84
Status Tests84
Table 7-2 Procedure for Displaying the Status Test Results84
Background Tests85
Table 7-3 Background Tests85
Controller Failure Symptoms87
Table 7-4 Controller Failure Symptoms87
Troubleshooting Procedures88
Table 7-5 Troubleshooting Power Failure Symptoms89
Table 7-6 Troubleshooting Latching Output Relay Failure90
Table 7-7 Troubleshooting Alarm Relay Output Failure90
Table 7-8 Troubleshooting a Keyboard Failure91
Table 7-9 Troubleshooting a RS-485 Communications Failure92
Table 7-10 Troubleshooting Auxiliary Output Failure93
Restoring Factory Configuration94
Table 7-11 Restoring Factory Configuration94
Parts List95
Exploded View95
Figure 8-1 UDC2500 Exploded View95
Table 8-1 Parts Identification96
Table 8-2 Parts Not Shown96
Removing the Chassis97
Modbus Rtu Function Codes98
Overview98
General Information98
Table 9-1 Integer Parameter Type99
Table 9-2 Floating Point Parameter Type99
Function Code 20 (14H) - Read Configuration Reference Data100
Table 9-3 Register Address Format for Function Code 20101
Read Configuration Examples102
Function Code 21 (15H) - Write Configuration Reference Data104
Table 9-4 Register Address Format for Function Code 21105
Write Configuration Examples106
Modbus Read, Write and Override Parameters Plus Exception Codes107
Overview107
Reading Control Data109
Miscellaneous Read Onlys109
Register Addresses for Read Onlys109
Table 10-1 Control Data Parameters109
Table 10-2 Miscellaneous Read Onlys109
Configuration Parameters110
Lock110
Table 10-3 Set-Up Group Lock110
Limit111
Table 10-4 Set-Up Group Limit111
Input 1112
Table 10-5 Set-Up Group - Input 1112
Options114
Table 10-6 Set-Up Group - Options114
Communications115
Table 10-7 Set-Up Group - Communications115
Alarms116
Table 10-8 Set-Up Group - Alarms116
Display118
Table 10-9 Set-Up Group - Display118
Modbus RTU Exception Codes119
Table 10-10 Modbus RTU Data Layer Status Exception Codes120
Ethernet Tcp/Ip121
Overview121
Further Information122
Modbus RTU Serial Communications122
Modbus Messaging on TCP/IP122
How to Apply Digital Instrumentation in Severe Electrical Noise Environments122
Index123

Eclipse UDC2500 Limit - Table 7-5 Troubleshooting Power Failure Symptoms

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