# Troubleshooting Manual for Control Panel

**URL:** <https://forumautomation.com/t/troubleshooting-manual-for-control-panel/256>\
**Category:** Industrial Automation\
**Created:** [February 20, 2015, 6:37am UTC](https://forumautomation.com/t/troubleshooting-manual-for-control-panel/256 "2015-02-20T06:37:53Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![automate](https://forumautomation.com/letter_avatar_proxy/v4/letter/a/51bf81/32.png) [@automate](https://forumautomation.com/u/automate)\
**Post date:** [February 20, 2015, 6:37am UTC](https://forumautomation.com/t/troubleshooting-manual-for-control-panel/256/1 "2015-02-20T06:37:55Z")

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1. SDF

Possible Fault: Fuse Burning.  
Cause: Over Current, Short Circuit Remedy:-Replace the Fuse with same rated new one 2. MCCB/MCB and ELCB.

Possible Fault: Tripping Cause: Short Circuited current. Remedy: Rectify the cause produced the tripping current and rectified the same. Put ON the MCCB/MCB

1. Power Contactor.

Possible Fault: Motor not starting. Cause: Contactor Coil faulty, Coil is not getting Power  
Remedy: Check the Power Supply voltage from Coil point. If coil is faulty replace with new one. 4. OLR

```
R	Y	B

                    TO Motor

```

Series to starter Coil (NC) Possible Faults: Motor not starting/Motor tripping continuously Cause: Relay Tripped, Current adjustment is faulty. Remedy: Release the tripped OLR switch, Adjust the current rating according to the Name Plate.

1. Relays:

Possible Fault: Not Working. Cause: Coil faulty, No power, Contact got damaged Remedy: Check the power Supply voltage, Continuity between contacts, wiring faulty. 6. Controlling power supply. Possible Fault: No Out put voltage, Voltage variation, Cause: Fuse Blown, loose Connection Remedy: Replace Fuse, Connect properly. 7. Transformer. Possible Fault: No Voltage, Low Voltage, Different Voltage, over heating. Cause: No Input Voltage, Loose connection, Over Load, Shot Circuit, Remedy: Check the input and out put Voltage, Limit Load Current 8. Terminal Block. Possible fault: Sparking and No Continuity. Cause: Loose Connection. Remedy: Tight the Connections and shot link. 9. Solenoid Valves. Possible Fault: Not working Cause: No Inlet Air supply, No Electrical Power supply, Air leakage, Remedy: Check the Air and power supply

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<div class="post-metadata">

**Author:** ![bboudelal](https://forumautomation.com/letter_avatar_proxy/v4/letter/b/96bed5/32.png) [@bboudelal](https://forumautomation.com/u/bboudelal)\
**Post date:** [April 15, 2015, 9:50am UTC](https://forumautomation.com/t/troubleshooting-manual-for-control-panel/256/2 "2015-04-15T09:50:35Z")

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Please may you explain to me what is ?

1. SDF. 2) OLR. 3) RYB. 4) OLR switch best greetings.

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<div class="post-metadata">

**Author:** ![instrumen](https://forumautomation.com/letter_avatar_proxy/v4/letter/i/65b543/32.png) [@instrumen](https://forumautomation.com/u/instrumen)\
**Post date:** [April 15, 2015, 4:54pm UTC](https://forumautomation.com/t/troubleshooting-manual-for-control-panel/256/3 "2015-04-15T16:54:25Z")

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Hi, SDF- Switch Disconnector Fuse OLR- Over Load Relay RYB- Red Yellow Blue ( 3 -Phase color indication)

Best Wishes

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**Author:** ![Ashif\_Kareem](https://forumautomation.com/letter_avatar_proxy/v4/letter/a/bc8723/32.png) [@Ashif\_Kareem](https://forumautomation.com/u/Ashif_Kareem)\
**Post date:** [November 2, 2015, 3:27am UTC](https://forumautomation.com/t/troubleshooting-manual-for-control-panel/256/5 "2015-11-02T03:27:17Z")

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Can some one explain which program is mostly used in DCS for linking inputs