What to do if Lenze TML Media Converter shows Single phase fault?
- JJacqueline SmithSep 23, 2025
If your Lenze Media Converter indicates a single-phase fault, a mains phase has been lost. Check the mains voltage.

What to do if Lenze TML Media Converter shows Single phase fault?
If your Lenze Media Converter indicates a single-phase fault, a mains phase has been lost. Check the mains voltage.
What to do if there is overvoltage on DC bus of Lenze Media Converter?
If you are experiencing overvoltage on the DC bus of your Lenze Media Converter, check the mains voltage, increase deceleration time or use dynamic braking option, or check the motor/motor cable for earth leakage (separate motor from controller).
What causes Lenze Media Converter to stop (outputs U, V, W inhibited)?
The Lenze Media Converter may stop with inhibited outputs U, V, W due to a LOW signal at terminal 28. To resolve this, set terminal 28 to HIGH.
What to do if Lenze Media Converter shows earth fault?
If your Lenze Media Converter indicates an earth fault, check the motor and motor cable for a grounded motor phase or excessive capacitive charging current. Consider using shorter motor cables with lower charging current.
Why is there undervoltage on DC bus in Lenze Media Converter?
Undervoltage on the DC bus of your Lenze Media Converter typically occurs because the mains voltage is too low. Check the mains voltage.
What to do if Lenze Media Converter shows Digital inputs not uniquely assigned?
If your Lenze Media Converter indicates that digital inputs are not uniquely assigned, it means E1...E3 are assigned with the same digital signals. Each digital signal can only be used once.
How to fix Drive identification fault on Lenze TML?
A drive identification fault on your Lenze Media Converter means an attempt was made to perform motor calibration before setting C86...C91. You must set C86...C91 before performing motor calibration (see c48).
What does 'Current limit reached' mean on Lenze Media Converter?
Reaching the current limit on your Lenze Media Converter indicates a controllable overload. This is managed automatically (see C22).
What does it mean when Lenze TML Media Converter says 'Remote keypad is active'?
If your Lenze Media Converter indicates that the remote keypad is active, the buttons on the front of the controller are disabled.
How to fix Lenze TML dynamic braking fault?
A dynamic braking fault in your Lenze Media Converter indicates that the dynamic braking resistors are overheating. Increase the deceleration time.
| Brand | Lenze |
|---|---|
| Model | TML |
| Category | Media Converter |
| Language | English |
Explanation of safety pictographs used in the manual and their corresponding meanings.
General safety rules, intended use, and compliance with directives for drive controllers.
Safety measures for handling, installation, and electrical connection of the drive.
Safety guidelines and warnings for operating the drive controller, including capacitor discharge and covers.
Specifies conformity, approvals, and environmental conditions for the drive.
Details electrical ratings for different drive models, including input and output current.
Covers physical dimensions, mounting instructions, and environmental considerations for installation.
Details requirements for electrical connections, EMC compliance, and wiring.
Specifies fuse types and cable cross-sections for EN 60204-1 and UL installations.
Provides a wiring diagram showing power and control connections for the drive.
Lists and explains the function of each control terminal for input and output signals.
Overview of how to set drive parameters using the keypad or EPM.
Information on the EPM for storing parameter settings and optional EPM programmers.
Detailed explanation of the parameter menu structure and common parameter settings.
Procedures for selecting Vector mode or Enhanced V/Hz mode for motor control.
Explains status indicators and error codes displayed by the drive.
Lists common errors, their causes, and recommended solutions for troubleshooting.
Details specific fault codes, their causes, and troubleshooting steps, including UL508C notes.