click2electro

Free online tool to convert millimeters (mm) to inches (in). Includes the exact conversion formula, examples, and a quick reference table for metric to imperial measurements. Length Converter Millimeters (mm) CONVERTS TO Inches (in) Calculation: Value ÷ 25.4 How to convert Millimeters to Inches To convert a measurement in millimeters to a measurement in inches, divide the length by the conversion ratio. Since one inch is equal to 25.4 millimeters, you can use this simple formula: inches = millimeters ÷ 25.4 Quick Conversion Table (mm to in) Millimeters (mm) Inches (in) 1 mm 0.0394 in 10 mm 0.3937 in 25.4 mm 1.0000 in 50 mm 1.9685 in 100 mm 3.9370 in  

A Yaskawa drive A32 fault (or A.32) indicates a Braking Transistor Fault , often triggered by excessive regenerative load, a short-circuit in the braking circuit, or failure of the internal braking transistor . Key Troubleshooting Steps: Check Braking Resistor: Ensure the resistor is not damaged, properly connected, and sized correctly for the load. Review Application: Decrease the braking frequency and increase the deceleration time ( ). Check Drive Wiring: Inspect the terminals for short circuits. Check for Internal Failure: Cycle power; if the fault returns immediately, the internal braking transistor may be damaged, requiring repair or replacement.  

The ABB VFD warning A7C1 indicates  Cyclical communication between drive and fieldbus adapter module A or between PLC and fieldbus adapter module A is lost. Cause & Solution Check status of fieldbus communication. See user documentation of fieldbus interface. Check settings of parameter groups 50 Fieldbus adapter (FBA), 51 FBA A settings, 52 FBA A data in and 53 FBA A data out. Check cable connections. Check if communication master is able to communicate.

If your Danfoss VLT 5000 is not running in reverse, check parameter 400 (Direction) to ensure it is not locked to "Forward only" (set to 0), and verify that terminal 19 (or the configured reversing terminal) is receiving a 24V signal . Additionally, check for alarm 60 (external signal missing) or parameter 200/201 which may limit speed to forward Key Troubleshooting Steps: Parameter Settings : Parameter 400 (Direction): Set to 0 (Forward), 1 (Reverse), or 2 (Both). Change to 2 to allow both directions. Parameter 200/201: Ensure there is no speed limit preventing reverse rotation. Wiring/Control Signals : Verify that +24V is connected to terminal 12 (or 13) and bridged to terminal 19 (reverse) via a switch. Check for alarm 60, which indicates a missing or invalid control signal, often causing "auto remote coast". Keypad Check : If running in "Hand" mode, you may need to use the + or - keys to reverse the direction, or change the direction via parame...

To reset a Panasonic servo absolute encoder (clearing alarm AL.450 or 451), replace the battery first with control power ON. Then, use the front panel to navigate to Pr0.0E (Absolute Encoder Setup) , set it to 6 (clear encoder), and restart the drive . If the encoder data is corrupted, clear the alarm via the parameter settings or software Step-by-Step Reset Procedure: Replace Battery: Ensure the servo driver control power is ON to prevent losing data. Replace the battery if voltage is low. Access Parameter Menu: On the servo drive front panel, press the S key , then use the M key to find the parameter setting mode. Navigate to Absolute Encoder Setup: Find Pr 0.0E (or Pr00E). Clear Encoder: Change the value of Pr0.0E to 6 (or 0006 ) to initiate the absolute encoder clear/reset. Save and Restart: Hold down the S key to save, then cycle the main power to the driver (turn off and on). Verify: The alarm should be gone. You may need to perform a machine zero return (homing) opera...

The F30021 fault on a Siemens Sinamics drive (G120, S120, G130) indicates a Power Unit Ground Fault . It means the drive has detected a short circuit to ground on the output side, often caused by damaged motor cables, insulation failure in the motor windings, or a defective motor module/current transformer (CT). Common Causes for F30021 Motor Cable Fault: Short circuit in the motor cable to ground or damaged shielding. Motor Winding Failure: Insulation failure within the motor. Defective Power Unit/IGBT: The inverter module (IGBTs) is damaged. Defective CT/Module: Current Transformers (CT) inside the drive have failed. Environmental Factors: Excessive moisture, dust, or condensation in the terminal box   Troubleshooting Steps Check Motor and Cables: Disconnect the motor cables from the drive and run the drive. If the fault disappears, the issue is in the motor or cable. Use a megger to test motor phase-to-ground insulation. Inspect Connections: Verify that the motor ca...

Is your L&T drive flashing "bb"? Learn what the Base Block signal means, why it inhibits your motor, and how to troubleshoot the wiring and parameters. If you’re working with an L&T Sx2000 or Cx2000 drive and the display is flashing "bb," you might think you’re looking at a fault code. However, in the L&T/Yaskawa ecosystem, "bb" isn't technically a "hard fault"—it is a status indicator for Base Block . In simple terms, "bb" means the drive has cut off the output to the motor. The internal transistors (IGBTs) are turned off, and the motor is allowed to coast to a stop. The drive is essentially in a "safety pause" and is waiting for a signal before it will allow the motor to restart. Let’s find out why your drive is stuck in this mode. Common Causes of the "bb" Signal When an L&T drive shows "bb," it is usually responding to an external command or ...

Error code 120 on a motor driver is a manufacturer-specific code that typically indicates an Overvoltage or Encoder/Communication issue. For Panasonic Minas series drivers, it is an Overvoltage Protection fault, often triggered during rapid deceleration when the motor acts as a generator. The fix involves increasing the deceleration time, checking for a disconnected or damaged Regenerative Resistor, and ensuring the input power supply voltage is within the rated range.

Staring at Fault 5 on your PowerFlex 700? This Overvoltage guide explains why the DC bus spikes, how to check braking resistors, and the parameters to adjust. If you are standing in front of an Allen-Bradley PowerFlex 700 and the HIM module is flashing Fault 5 (Overvoltage) , your drive is protecting itself from a surge of electrical energy. In simple terms, the "DC Bus"—the drive's internal reservoir of power—has become over-pressurized. For a standard 480V drive, this usually means the voltage has spiked above 810V DC . To prevent the capacitors from failing, the drive trips. Let’s look at how to find the source of that extra energy. Common Causes of Overvoltage in PowerFlex 700 When a PowerFlex 700 trips on Fault 5, it’s usually due to one of these three scenarios: Regeneration (Deceleration): This is the #1 cause. When you try to stop a heavy load (like a fan or a centrifuge) too fast, the motor turns into a generator and...

ou3 fault in drive indicates  Over voltage in constant speed comes when the inverter's internal main circuit DC voltage to reach or exceed the specified value. Cause :   Over voltage in constant speed comes when the inverter's internal main circuit DC voltage to reach or exceed the specified value. Solutions:  The protection circuit is activated to stop the inverter output. The circuit may also be activated by a surge voltage produced in the power supply system. Power supply abnormal. Check the input power source. Large load inertia. Add suitable braking devices.

Staring at Er-11 on your Yaskawa GA500? This Auto-Tuning error means your motor data is mismatched. Learn how to check parameters and fix the error today. If you are in the middle of commissioning a new Yaskawa GA500 and the keypad suddenly displays Er-11 , you haven't broken the drive. This is a very specific error that happens during the Auto-Tuning process. In the Yaskawa manual, Er-11 is a Motor Data Error . It means the drive has taken the information you typed in (Amps, Voltage, Power) and compared it to its own internal calculations, and the two don't match. Essentially, the drive thinks the motor data is "illogical." Why Does Er-11 Happen? When the GA500 trips on Er-11, it is usually due to one of these three "Human" errors: Parameter Typos: You accidentally entered the wrong Rated Current or Rated Power (e.g., entering 50.0 Amps instead of 5.0 Amps). Unit Mismatch: You entered the motor power in Horse...

7510 FBA A communication Fault in ABB ACS880 Drive indicates cyclical communication between drive and fieldbus adapter module A or between PLC and fieldbus adapter module A is lost.   Cause   : Cyclical communication between drive and fieldbus adapter module A or between PLC and fieldbus adapter module A is lost. Solution:  1. Check status of fieldbus communication. See user documentation of fieldbus interface. 2. Check settings of parameter groups 50 Fieldbus adapter (FBA), 51 FBA A settings, 52 FBA A data in and 53 FBA A data out. 3.   Check cable connections. 4. Check if communication master is able to communicate.

Staring at SCF4 or SCF1 on your Schneider Altivar VFD? Learn how to diagnose IGBT short circuits, test your motor, and clear the fault safely.   Solving the Schneider Altivar Short Circuit Fault: SCF1, SCF3, and SCF4 If you are working with a Schneider Altivar drive and the screen suddenly turns red with an SCF fault , your first instinct might be to panic. These are "Hard Faults," meaning the drive has detected a massive rush of current and shut down in milliseconds to prevent a fire or total hardware failure. On the Schneider platform, these codes break down as follows: SCF1: Motor short circuit. SCF3: Ground fault (current leaking to earth). SCF4: IGBT short circuit (Internal power component failure). SCF5: Short circuit detected during motor start-up. What is an IGBT and Why Does it Trip? The IGBT (Insulated-Gate Bipolar Transistor) is the high-speed switch inside the drive that creates the variable freq...

Staring at F0035 on your ABB ACS550? Learn why the Output Wiring Fault occurs, how to check your terminals, and how to fix your VFD safely.   Solving ABB ACS550 Fault F0035: The "Wiring Error" Guide If you are looking at your ABB ACS550 and the display is flashing F0035 , the drive has detected an "impossible" electrical condition. It thinks that the power meant for the motor is actually coming from the power grid—or vice versa. In the ACS550 series, F0035 is the Output Wiring Fault . It’s a high-level safety trip designed to prevent the drive's internal transistors (IGBTs) from exploding. Let's look at why this happens and how to fix it without damaging your hardware. Common Causes of the F0035 Fault When an ACS550 trips on F0035, it’s usually one of these three real-world issues: Input/Output Swap (The "Oops" Moment): The most common cause on new installations. The power lines (L1...

Seeing A5014 on your ABB ACS550? This "Local Lock" alarm prevents you from using the keypad buttons. Learn how to unlock your drive using Parameter 1606.   How to Fix ABB ACS550 Alarm A5014: Unlocking the Keypad Are you trying to switch your ABB ACS550 to "Local" mode or hit the "Start" button, only to have the screen flash A5014 at you? It feels like the drive is ignoring you, but there is a very specific reason for this behavior. In the ABB manual, A5014 stands for "Local Lock." It means the drive has been programmed to disable the keypad's LOC/REM , Start/Stop , and Direction buttons. It is a software "padlock" usually put in place by engineers to prevent operators from taking manual control of a critical process. Let’s look at how to take that lock off. Why is the A5014 Alarm Appearing? The ACS550 allows for a "Local Lock" function to be assigned to a specific p...

Staring at E.OC3 on your Mitsubishi A800? This overcurrent fault happens at constant speed. Learn how to check for mechanical jams, loose wiring, and load surges.   Solving Mitsubishi FR-A800 Fault E.OC3: Overcurrent at Constant Speed If your Mitsubishi FR-A800 has suddenly tripped and the display is flashing E.OC3 , it means the drive detected an overcurrent spike while the motor was running at its set speed. Unlike E.OC1 (which happens during acceleration) or E.OC2 (which happens during deceleration), E.OC3 is often related to a sudden change in the machine's behavior or an electrical glitch in the output circuit. Let’s look at how to diagnose the cause and get your production line moving again. Common Causes of the E.OC3 Fault Because this fault happens while the drive is "cruising" at a steady speed, look for these specific issues: Sudden Load Surge: The machine hit a "hard spot" or a mechanica...

Staring at E.GF on your Mitsubishi FR-A800? Learn why your drive detected a ground fault, how to test your motor insulation, and the steps to clear the error.   Solving Mitsubishi FR-A800 Fault E.GF: The Ground Fault Guide If your Mitsubishi FR-A800 has come to a screeching halt and the keypad is flashing E.GF , the drive has detected an "Earth Fault." Essentially, current is escaping from its intended path and leaking to the ground. The A800 is a very sensitive drive; it monitors the balance between its output phases. If the math doesn't add up because some electricity is heading to the earth, it trips E.GF to prevent the drive's internal transistors (IGBTs) from blowing up. Let’s look at how to find the leak. Common Causes of the E.GF Fault When a Mitsubishi drive trips on E.GF, the problem is almost always "outside" the drive in the field wiring or the motor. Here are the usual suspects: Mo...

Getting an oL1 fault on your Yaskawa V1000? Learn why your motor is overloading, how to check parameter E2-01, and the steps to clear the error safely.   Solving the Yaskawa V1000 oL1 Fault: Motor Overload Guide If your Yaskawa V1000 has suddenly stopped and the keypad is flashing oL1 , your drive is trying to save your motor from a permanent "burnout." In the Yaskawa world, oL1 stands for Motor Overload . This means the drive’s internal electronic thermal protection has calculated that the motor is drawing more current than it can handle over a specific period. It’s not necessarily a hardware failure; it’s a protective "time-out." Let’s look at how to find the root cause. Why Does the oL1 Fault Happen? When you see oL1, it usually boils down to one of these three real-world categories: Mechanical Overload: The machine is jammed, a bearing is seized, or you’re simply trying to push too much product thr...

Staring at F0006 on your ABB ACS550? This DC Undervoltage fault means your drive isn't getting enough power. Learn how to check fuses, line voltage, and internal hardware.   Solving ABB ACS550 Fault F0006: The DC Undervoltage Guide If you are standing in front of your ABB ACS550 and the screen is flashing F0006 , your drive is essentially "starving" for power. This code stands for DC Undervoltage . In simple terms, the drive’s internal DC bus—the "gas tank" that holds the electricity before it’s sent to the motor—has dropped below its minimum safe level. Let’s walk through why this happens and how to get your machine back in production. What Causes Fault F0006? When an ACS550 trips on F0006, it usually isn't because the drive is broken. It's usually because something in the power supply has failed. Common causes include: Blown Input Fuse: This is the #1 cause. If one of the three input fu...

Staring at F1009 on your ABB ACS355? Learn why the PAR PCU CONF fault happens and how to fix this internal configuration error with our step-by-step guide.   Solving ABB ACS355 Fault F1009: What is PAR PCU CONF? If you are looking at your ABB ACS355 micro-drive and the screen is flashing F1009 , you’ve run into a bit of an "identity crisis." In the ABB manual, this fault is labeled as PAR PCU CONF (Parameter Power Control Unit Configuration). In simple terms, the drive's control board (the brain) and the power unit (the muscles) are having a disagreement. The software thinks it’s running on a specific hardware setup, but the physical sensors are telling it something different. Let's look at why this happens and how to fix it. Common Causes of Fault F1009 Because the ACS355 is a compact, highly integrated drive, F1009 usually appears during one of these three situations: After a Firmware Update: New soft...

Seeing LvS on your Delta C2000 VFD? Learn why your DC bus voltage is dropping during standby and how to troubleshoot power supply and fuse issues.   How to Fix the Delta C2000 LvS Fault: Low Voltage in Standby If you are looking at your Delta C2000 drive and the screen is flashing LvS , you are dealing with a Low Voltage during Standby condition. While most "Lv" (Low Voltage) faults happen when a motor pulls too much power, the "S" specifically tells us that this is happening while the drive is stopped or in standby mode. Essentially, the drive's internal "DC Bus" voltage has dropped below the minimum threshold required to keep the drive ready for operation. Let’s walk through the "real world" causes and the steps to get it fixed. Common Causes of the LvS Fault When a Delta C2000 trips on LvS, it’s usually one of these four issues: Line Voltage Drop: Your incoming factory powe...

Seeing A3A1 on your ABB ACS560? This Saf Torque Off (STO) feedback mismatch warning means your safety channels are out of sync. Learn how to fix the wiring here.   Solving ABB ACS560 Warning A3A1: STO Feedback Mismatch If your ABB ACS560 is flashing the A3A1 warning , the drive has detected a disagreement in its own safety system. This specific code stands for SAF (Safe Torque Off) Feedback Mismatch . In simple terms, the drive has two separate channels for its safety circuit. For the motor to run, both channels must be "On." If one channel thinks the machine should be stopped and the other thinks it should be running, the drive gets confused and triggers the A3A1 alarm. It's a "handshake" that failed. Common Causes of the A3A1 Warning Because the A3A1 code is usually a wiring or timing issue, look for these four common culprits: Broken or Loose Wire: A single wire on the 4-pin XSTO terminal has co...

Staring at the ovA code on your Delta C2000? Learn why overvoltage happens during acceleration and the specific parameters to adjust to fix it.   Solving the Delta C2000 ovA Fault: Overvoltage During Acceleration If you are standing in front of your Delta C2000 drive and the screen is flashing ovA , you might be scratching your head. Usually, overvoltage happens when you try to stop a motor too fast (ovd), but ovA happens while the motor is speeding up . In simple terms, the drive's internal "DC Bus" has become over-pressurized with voltage. If it doesn't trip, the internal capacitors could fail. Let's look at why this is happening and how to get your machine back in motion. Common Causes of the ovA Fault When a Delta C2000 trips on ovA, it’s usually due to one of these three real-world issues: Input Power Surges: Your factory's incoming power is too high or has a temporary spike. Acceleration Tim...