Allen-Bradley SLC 500 1747-L511 Installation And Operation Manual Download | Manualshive

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Chapter

10

Publication 1747-6.2

Troubleshooting

In this chapter, you will learn about:

•

calling Allen-Bradley for assistance

•

tips for troubleshooting your control system

•

troubleshooting the SLC 5/01 and SLC 5/02 processors

•

troubleshooting the SLC 5/03, SLC 5/04, and SLC 5/05
processors

•

troubleshooting your input modules

•

troubleshooting your output modules

If you need to contact Allen-Bradley or local distributor for
assistance, it is helpful to obtain the following (prior to calling):

•

processor type, series letter, operating system (OS) number
(obtained from the status file), firmware (FRN) number (see label
on side of processor module)

•

processor LED status

•

processor error codes (found in S:6 of status file)

•

hardware types in system (I/O modules, chassis)

•

revision of programming device (on the main menu of the
Hand-Held Terminal or programming software)

Calling Allen-Bradley for
Assistance

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Summary of Contents for SLC 500 1747-L511

Page 1: ...ACTURER DATA SHEET Allen Bradley Rockwell SLC500 Manufacturer Model Number PDF File Doc_000074_Cover pdf See www geomartin com for additional PDF datasheets Martin Part Number E 014624 00 VendorPartNumber 1747 L524 ...

Page 2: ...This page is intentionally left blank ...

Page 3: ...Installation and Operation Manual SLC 500t Modular Hardware Style Cat Nos 1747 L511 1747 L514 1747 L524 1747 L531 1747 L532 1747 L541 1747 L542 1747 L543 1747 L551 1747 L552 and 1747 L553 Allen Bradley ...

Page 4: ...mission of Allen Bradley Company Inc is prohibited Throughout this manual we use notes to make you aware of safety considerations ATTENTION Identifies information about practices or circumstances that can lead to personal injury or death property damage or economic loss Attention statements help you to identify a hazard avoid the hazard recognize the consequences Important Identifies information t...

Page 5: ...the power supply do the following 1 Align the circuit board with the card guide on the left side of the chassis Slide the power supply in until flush with the chassis 19524 2 Fasten the power supply to the chassis with the two Phillips head screws 3 Place the jumper to match the input voltage This does not apply to 1746 P3 or 1746 P5 which do not have a jumper ATTENTION Make jumper selection befor...

Page 6: ...ROUND CHASSIS GROUND PWR OUT COM PWR OUT COM PWR OUT 24V dc PWR OUT 24V dc PWR OUT 24V dc PWR OUT COMMON NOT USED NOT USED User Power User Power User Power 1746 P1 and P2 1746 P4 1746 P5 1746 P3 4 Remove the warning label from the top of the power supply 5 Connect line power to the power supply ATTENTION If you have a 1746 P3 see page 3 5 for special grounding considerations On the 1746 P1 and P2 ...

Page 7: ...ct cable before installing the power supply in multiple chassis configurations The cables are keyed for proper installation The end of the cable that plugs into the right socket in the chassis has the key on the top of the connector The opposite end of the cable has the key on the inside of the connector for insertion into the expansion chassis To remove the cable move the tabs on the socket outwa...

Page 8: ...em and their power supply Field devices connected to the positive side V of the field power supply are sourcing field devices Field devices connected to the negative side DC Common of the field power supply are called sinking field devices To maintain electrical compatibility between field devices and the programmable controller system this definition is extended to the input output circuits on th...

Page 9: ... output modules If you need to contact Allen Bradley or local distributor for assistance it is helpful to obtain the following prior to calling processor type series letter operating system OS number obtained from the status file firmware FRN number see label on side of processor module processor LED status processor error codes found in S 6 of status file hardware types in system I O modules chas...

Page 10: ...rocedures detailed in chapters 6 7 and 8 were followed closely your SLC controller will give you reliable service If a problem should occur the first step in the troubleshooting procedure is to identify the problem and its source The SLC 500 controller has been designed to simplify troubleshooting procedures By observing the diagnostic indicators on the front of the power supply processor unit and...

Page 11: ...benefit of this troubleshooting section we recommend you follow these steps 1 Identify the status of your processor LEDs See chapter 5 for a description of LEDs and their different states 2 Using the tables on the following pages match your processor and power supply LEDs with the status LEDs located in the first column 3 Once the status LEDs are matched to the appropriate table simply move across...

Page 12: ...ondition reoccurs re calculate module configuration power required and verify proper power supply selection See page 2 11 This problem can occur intermittently if power supply is slightly overloaded when output loading and temperature varies Defective Power Supply 1 Recheck other probable causes 2 Monitor the line power to chassis power supply for possible transient or shorting 3 Replace the power...

Page 13: ...r and inspect the power supply chassis connections and the processor chassis connections 2 Re install the devices and re apply power Important The processor only operates in slot 0 of chassis 1 Defective Processor Power Supply or Chassis 1 Attempt Run mode selection of Processor in existing chassis 2 Place processor in another chassis not in the existing system Apply power reconfigure and attempt ...

Page 14: ...memory module with a replacement module Refer to chapter 6 for removing and installing memory modules CPU Fault Faulty CPU Power Supply 1 Place the processor in another chassis not in the existing system and cycle power If steady CPU FAULT LED reappears replace the processor 2 If CPU FAULT LED clears monitor the line power going to the power supply in existing system 3 Replace existing system powe...

Page 15: ... bits if set 6 Clear Status File S 6 major error code optional 7 Attempt a processor Run mode entry If unsuccessful repeat recommended action steps above The Following Error Exists Probable Cause Recommended Action System does not operate per ladder logic User Forced I O Disabling Operation 1 Monitor program file online and identify forced I O 2 Disable appropriate forces and test system condition...

Page 16: ...ify battery is connected See pages 6 1 and 9 4 2 Replace the battery if you want RAM battery backup See page 9 4 If you want to back up RAM with the capacitor in a SLC 5 01 1747 L511 add or replace the BATTERY LOW LED jumper 3 Refer to processor major fault recommended action steps Refer to either the Hand Held Terminal User Manual Catalog Number 1747 NP002 or your programming software user manual...

Page 17: ...nnection of Communication Device 1 Check cable continuity 2 Check cable connections between programmer and processor 3 Check communication device for example the 1747 PIC Replace if necessary Low or No Power to Communication Device 1 Verify proper power supply selection and backplane loading 1747 PIC and 1747 AIC draw power off the backplane 2 Verify proper 120 240V power supply jumper selection S...

Page 18: ...mmended Action A fatal error has occurred Excessive noise or a faulty SLC 5 02 processor 1 Cycle power to obtain flashing CPU FAULT LED and default program 2 Examine the error code following the power cycle Take appropriate action 3 Reload your program 4 Contact your local Allen Bradley representative if the error persists Refer to the following key to determine the status of the LED indicators In...

Page 19: ...es on the following pages match your processor and power supply LEDs with the status LEDs located in the first column 3 Once the status LEDs are matched to the appropriate table simply move across the table identifying error description and probable causes 4 Then follow the recommended action steps for each probable cause until the cause is identified 5 If recommended actions do not identify the t...

Page 20: ...s Reapply power 2 If condition reoccurs re calculate module configuration power required and verify proper power supply selection See page 2 11 This problem can occur intermittently if power supply is overloaded when output loading and temperature varies Defective Power Supply 1 Recheck other probable causes 2 Monitor the line power to chassis power supply for possible transient or shorting 3 Repl...

Page 21: ...ower supply chassis connections and the processor chassis connections 2 Re install the devices and re apply power Important The processor only operates in slot 0 of chassis 1 Defective Processor Power Supply or Chassis 1 Attempt Run mode selection of Processor in existing chassis If keyswitch is in the REM position and there is no key use the programmer If keyswitch is in REM or PROG position and ...

Page 22: ... a replacement module Refer to chapter 6 for removing and installing memory modules CPU Fault Faulty CPU Power Supply 1 Place the processor in another chassis not in the existing system and cycle power If steady FLT LED reappears replace the processor 2 If FLT LED clears monitor the line power going to the power supply in existing system 3 Replace existing system power supply if line power checks ...

Page 23: ...r code optional g Attempt a processor Run mode entry If unsuccessful repeat recommended action steps above 2 Use the keyswitch to clear the fault Toggle the keyswitch to PROG and back to RUN See page 10 11 If FAULT occurs again use programmer to get error code and determine the source of problem The Following Error Exists Probable Cause Recommended Action System does not operate per ladder logic U...

Page 24: ...w or No Battery Back up Loss of RAM during Power Down Period 1 Verify battery is connected See pages 6 1 and 9 5 2 Replace the battery if you want RAM battery backup See page 9 5 3 Refer to processor major fault recommended action steps Refer to your programming software user manual Refer to the following key to determine the status of the LED indicators Indicates the LED is OFF Indicates the LED ...

Page 25: ...ck communication channel configuration with your programming software Also see Returning the SLC 5 03 SLC 5 04 and SLC 5 05 Processors to Initial Factory Conditions on page 10 25 Communication channel is damaged Replace processor Refer to the following key to determine the status of the LED indicators Indicates the LED is OFF Indicates the LED is ON The DH485 LED on the SLC 5 03 processor is label...

Page 26: ...f necessary SLC 5 04 Low or No Power to Communication Device 1 Verify proper power supply selection and backplane loading The 1747 PIC and 1747 AIC draw power off the backplane 2 Verify proper 120 240V power supply jumper selection See page 6 8 Duplicate drop is detected The LED is flashing red on the SLC 5 04 Another DH device is already on the DH network at the node address of this same device 1...

Page 27: ... processor node addresses must be different 2 Try different combinations of a baud rate Processor default is 19200 b node address Processor default is 1 3 Try to increase the maximum node address Default is 31 See your programming software user manual for channel configuration information communication but cannot find other active nodes Bad Connection 1 Check cable continuity 2 Check cable connect...

Page 28: ...nections 2 Check cable pinouts Also see appendix B for RS 232 pinouts The Following Error Exists Probable Cause Recommended Action A fatal error has occurred Excessive noise or a faulty SLC 5 03 SLC 5 04 or SLC 5 05 processor 1 Cycle power to obtain flashing FLT LED and default program 2 Examine the error code following the power cycle Take appropriate action 3 Reload your program 4 Contact your l...

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