What to do if the yellow LED is lit on my Lenze DC Drives?
If the yellow LED is lit, it could be because the brake resistor is not connected. Ensure the brake resistor is properly connected. Alternatively, the brake resistor might be dimensioned with a too high impedance. If permissible, use a low-resistance brake resistor, or connect several braking units in parallel.
What to do if Lenze 9350 controller sets pulse inhibit and reports overvoltage?
If the controller sets a pulse inhibit during braking and reports overvoltage, it could be because the braking unit is not connected to the terminals +U, ?U of the G G controller. Connect the braking unit to these terminals. Another possible cause is an incorrectly set switching threshold. Adapt switching thresholds of the braking unit and controller to the mains voltage.
How to fix a Lenze 9350 with an error if the green LED is not lit?
If the green LED is not lit, it indicates that there is no voltage at terminals +U, ?U G G. Switch on the mains. Otherwise, connect the braking unit to the terminals +U, ?U of the controller G G.
Why is the brake resistor overheating in my Lenze 9350?
If the brake resistor is overheating, it might be due to incorrect resistor dimensioning. Select an appropriate resistor for the drive, possibly using a 9352 instead of a 9351. Another cause might be an incorrectly set switching threshold of the braking unit. In this case, adapt switching thresholds of the braking unit and controller to the mains voltage.
Why are the brake resistors heating irregularly during parallel operation of Lenze 9350?
Irregular heating of brake resistors during parallel operation can occur for several reasons. First, check that braking units connected in parallel are connected to terminals +U, ?U of the controller(s). Ensure the brake resistor is connected. Also, the switching thresholds of the braking units which are connected in parallel may not be set equally, adapt switching thresholds of braking unit and controller to the mains voltage. Ensure braking units are configured correctly as master/slave. Finally, connect synchronization.
Why is the yellow LED continuously lit and the brake resistor overheating on my Lenze DC Drives?
If the yellow LED is continuously lit and the brake resistor is overheating, the switching threshold(s) of the braking unit(s) may be set incorrectly. Adapt switching thresholds of the braking unit and controller to the mains voltage.
What to do if Lenze Control Unit sets pulse inhibit during braking and indicates overvoltage?
If the Lenze Control Unit sets a pulse inhibit during braking and indicates overvoltage, and the yellow LED is not on or is on, it could be due to several reasons: * The brake unit might not be correctly connected to the terminals +UG, -UG of the controller. In this case, connect the brake unit to the terminals +UG, -UG of the controller. * The threshold settings (switches S1, S2) could be incorrect. Adapt the thresholds of the brake unit and the controller to the mains voltage. * The brake resistor might not be connected. Connect the brake resistor. * The brake resistance might be too high. Use a low-resistance brake resistor (if permissible), or connect several brake units in parallel.
Why is the brake resistor overheated in my Lenze Control Unit?
If the brake resistor is overheated, it might be due to selecting the wrong brake resistor. To resolve this: * Select a resistor matching your drive. * For 9351, consider using 9352. Another cause might be an incorrect setting of the threshold of the brake unit (switches S1, S2). In this case, adapt the thresholds of the brake unit and the controller to the mains voltage.
What to do if yellow LED is permanently on and the brake resistor is overheated in Lenze Control Unit?
If the brake resistor is overheated and the yellow LED is permanently on, it could be due to an incorrect setting of the threshold(s) of the brake unit(s) (switches S1, S2). To resolve this, adapt the thresholds of the brake unit and the controller to the mains voltage.
How to fix green LED if it is not on for Lenze Control Unit?
If the green LED on your Lenze Control Unit is not on, it indicates that there is no voltage at terminals +UG, -UG. To solve this: * Switch on the mains. * Connect the brake unit to the terminals +UG, -UG of the controller.
Measures for personal safety when working with controllers.
Specifies requirements for personnel operating the equipment.
Notes on electrical installation and safety standards.
Safety measures during operation and residual voltage.
Essential safety and application notes for braking units.
Identification of hazards when working with braking units.
Measures to mitigate consequences of faults.
Details on voltage, current, and power ratings.
Information on brake resistance and maximum energy capacity.
Details on mass and other physical data.
Critical safety warnings for electrical installation.
Measures to protect personnel during electrical work.
Diagram showing the connection of the 9352 brake chopper.
Table of default settings for mains voltage and switching thresholds.
Explanation of the switching threshold's role in braking.
Step-by-step guide for setting the switching threshold.
Guidelines for connecting braking units in parallel with resistors.
Important considerations for parallel connection.
Ensuring correct synchronisation of parallel braking units.
Procedure for configuring units as master or slave.
Diagram for parallel operation using a single brake resistor.
Key components and their roles in the common resistor setup.
Critical checks before initial switch-on.
Interpreting the LED status indicators.
Table listing errors, their causes, and remedies.
General| Category | DC Drives |
|---|---|
| Series | 9350 |
| Supply Voltage | 230/460 VAC ±10% |
| Input Voltage | 230/460 VAC ±10% |
| Control Type | Microprocessor-based control |
| Protection Features | Overcurrent, overvoltage, undervoltage, overtemperature, short circuit, I²t motor protection |
| Communication Interface | RS-485 (Modbus RTU) |
| Cooling Method | Forced air cooling |
| Operating Temperature | 0°C to +40°C (32°F to 104°F) |
| Storage Temperature | -25°C to +70°C (-13°F to 158°F) |
| Relative Humidity | 5% to 95% non-condensing |
| Enclosure Rating | IP20 |
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