Lenze 00373643 33.86.08_E Constant Current Regulator Module
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Product Information
The Lenze 00373643 (Model 33.86.08_E) is an industrial constant current regulator module engineered specifically for precision excitation control of magnetic particle clutches and brakes. Operating from a 230 V AC mains supply at 50/60 Hz, the unit supplies a controlled output of up to 1.5 A DC at a maximum output voltage of 24 V DC. By regulating excitation current rather than simple voltage, the module compensates for coil temperature variations to maintain predictable torque and consistent material tension across continuous unwinding, rewinding, and web processing machinery. The compact housing is constructed for direct installation on standard DIN rails within control cabinets.
Control signals are interfaced using standard 0 to 10 V DC analog setpoint inputs from a PLC or directly via an external 10 kOhm adjustment potentiometer wired to screw terminal connections. Commissioning a replacement unit does not require software programming tools, as tuning is performed directly on the front panel using integrated trimmer potentiometers. Technicians can manually adjust minimum and maximum output levels, current limits, and output ramps to match machine requirements. When placing a spare into service, copying the physical dial positions from the original module and verifying coil resistance across the connected clutch or brake provides a dependable baseline for operation. ABC Industrial Parts can assist maintenance teams with sourcing replacement modules to keep legacy production equipment running.
Diagnostic feedback is available on the front panel via a POWER / READY indicator. A lit LED confirms the presence of mains power and operational readiness, while an unlit indicator under power conditions points to an open internal fuse or hardware fault. Operational verification can also be conducted by measuring output current using an ammeter connected in series across the excitation terminals. Internal circuit component failures are not field-serviceable; replacing the faulty unit or utilizing a tested exchange module through ABC Industrial Parts ensures a rapid return to operation.
Technical Specifications
| Supply voltage | 230 V AC |
| Supply frequency | 50/60 Hz |
| Maximum output current | 1.5 A DC |
| Maximum output voltage | 24 V DC |
| Setpoint input voltage | 0...10 V DC |
| External potentiometer compatibility | 10 kOhm |
| Mounting style | DIN Rail |
| Control method | Constant current regulation |
Communication and System Integration
The Lenze 00373643 (Type 33.86.08_E) integrates into automated control systems using standard analog interface signals. The module accepts a 0 to 10 V DC setpoint input directly from PLC analog output channels to regulate output current dynamically during machine operation. Alternatively, manual speed or torque setpoints can be generated using a standard 10 kOhm external potentiometer connected to the designated control terminals.
All electrical connections, including mains 230 V AC power, analog setpoint input, and the regulated 0 to 1.5 A DC excitation output, are made using accessible screw terminal blocks. This direct wiring setup allows simple connection to magnetic particle brakes and clutches used in packaging, converting, printing, and textile equipment.
Diagnostics and Status Indication
Status monitoring on the Lenze 00373643 is handled via the front-panel POWER / READY LED. A solid light indicates that 230 V AC supply power is active and the internal regulation circuitry is functioning. If the indicator remains unlit while power is supplied to the terminals, an internal fuse may have blown or hardware damage has occurred.
For direct operational verification, technicians can measure current across the output terminals feeding the magnetic particle brake or clutch using an in-line ammeter. This confirms whether the commanded setpoint voltage correlates with the actual excitation current delivered to the load.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| POWER / READY | Solid / Off | Indicates presence of mains power and operational state. If unlit when power is applied, internal fuse or hardware failure is indicated. |
Replacement and Spare Part Considerations
When installing a spare Lenze 00373643 (33.86.08_E) module, transfer calibration parameters manually by matching the positions of the front-panel trimmer potentiometers from the existing unit. Adjustments for minimum current, maximum current, current limits, and acceleration/deceleration ramps are set via these hardware dials without requiring software tools.
Before applying power to a replacement regulator, verify the electrical integrity of the field load by checking resistance across the magnetic particle brake or clutch coil. Ensuring the coil is within specification and free of short circuits protects the new current regulator module from excessive current draw during start-up.
Frequently Asked Questions
What is the supply voltage requirement for the Lenze 00373643?
The module requires a standard 230 V AC single-phase supply at 50/60 Hz.
What output current does the Lenze 33.86.08_E deliver?
It provides a regulated constant current output of up to 1.5 A DC at a maximum output voltage of 24 V DC.
How is the setpoint supplied to the regulator?
The unit accepts a 0 to 10 V DC analog setpoint signal from a PLC channel or can be adjusted manually using a 10 kOhm external potentiometer.
Is software required to configure a replacement module?
No programming software is needed. Calibration for min/max output, current limits, and ramps is performed manually using front-panel trimmer potentiometers.
What does it mean if the POWER / READY LED does not light up?
If mains power is applied and the POWER / READY LED remains off, an internal fuse has failed or an internal hardware defect is present.
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Data backup and recovery
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Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
We are not an authorised distributor of Lenze.
Product photos are for illustration purposes only and may differ from the actual product delivered.
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