Lenze 00358056 EMZ8201BB Keypad Operating Module
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Product Information
The Lenze 00358056 EMZ8201BB is an operating keypad module engineered for local parameterization, manual speed control, and operational monitoring of Lenze 8200 vector and 8200 motec frequency inverters. Equipped with a text and numeric LCD display, this interface allows maintenance personnel and system operators to adjust parameters and monitor live operating values directly at the drive. The module plugs directly into the front operating slot of the inverter via a pin header connector, offering an IP20 protection interface for installations across material handling, packaging machinery, textile manufacturing, and HVAC systems.
To simplify commissioning and field replacement, the EMZ8201BB features integrated non-volatile EEPROM memory capable of storing one complete drive parameter set. This enables software-free parameter cloning between inverters, allowing technicians to upload saved configurations into target drives without requiring a PC or external engineering tool. For enclosure door integration, the unit can be mounted remotely using the Lenze EMZ8272BB extension cable assembly and an optional door-mounting frame kit to achieve IP65 protection. When parameter backup or setup preparation is required during drive maintenance, ABC Industrial Parts can assist with replacement sourcing and technical support.
During routine operation, the keypad LCD display provides real-time readouts of critical variables including actual motor speed, motor current, DC-bus voltage, and operating states such as ready (RDY), pulse inhibit (IMP), and operation (RUN). The integrated menu allows quick access to fault history records and first-line checks on power supply, cable seating, and field connections when error codes occur. Hardware failures or persistent memory corruption faults such as EEr cannot be serviced internally in the field, making module exchange or expert repair through ABC Industrial Parts the ideal solution to restore production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 00358056 |
| Model / Type | EMZ8201BB |
| Component Type | Keypad |
| Product Family | 8200 Series Accessories |
| Compatibility | Lenze 8200 vector and 8200 motec frequency inverters |
| Display Type | LCD Display |
| Mounting Type | Direct Plug-in / Remote Cable Mount |
| Protection Rating | IP20 (IP65 achievable with door-mounting kit) |
| Parameter Storage Memory | Integrated EEPROM (1 Complete Parameter Set) |
| Interface Connector | Direct plug-in pin header |
Programming and Configuration
The Lenze 00358056 EMZ8201BB keypad enables direct local parameterization and commissioning without requiring a PC connection. Navigating through the keypad menu using the front keys allows technicians to adjust operational parameters, set speed commands, and configure drive functions locally at the machine.
For advanced software-based commissioning, system parameters can also be monitored and configured using Global Drive Control (GDC) software via a diagnostic module. The keypad's built-in non-volatile EEPROM memory holds one full parameter set, allowing fast PC-free drive parameter cloning and backup when deploying or swapping drives.
Communication and System Integration
The EMZ8201BB connects directly to the front interface slot of Lenze 8200 vector and 8200 motec inverters using an integrated direct plug-in pin header. This interface provides physical seating and reliable signal transmission between the operating keypad and the inverter control board.
For panel-door mounting, the keypad integrates using the Lenze EMZ8272BB extension cable assembly. When combined with an optional door-mounting frame kit, the enclosure installation achieves an IP65 protection rating against water and dust ingress.
Diagnostics and Status Indication
Operational monitoring is facilitated directly via the high-visibility LCD screen on the EMZ8201BB keypad. The screen displays system operating states such as RDY (Ready), IMP (Pulse Inhibit), and RUN (Operation), as well as diagnostic fault codes when a drive trip occurs.
Technicians can navigate the keypad menu to read stored fault history and analyze live drive variables including actual motor speed, motor current, and DC-bus voltage. Diagnostic data can also be evaluated externally using Global Drive Control (GDC) software via a diagnostic module interface.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| LCD Status Display | Active LCD readout | Displays drive operational status (e.g. RDY for ready, IMP for pulse inhibit, RUN for operation, or error code during fault) |
Replacement and Spare Part Considerations
When installing a replacement Lenze 00358056 EMZ8201BB keypad, confirm compatibility with the existing drive model. This keypad module is designed specifically for Lenze 8200 vector and 8200 motec frequency inverters.
To accelerate drive replacement, stored parameters can be copied directly using the keypad's internal EEPROM memory without requiring software setup. When replacing door-mounted units, verify that the EMZ8272BB extension cable connections and door seal frames are securely seated to preserve IP65 environmental protection.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| OC1 | Short circuit / Overcurrent | Short circuit or extreme overcurrent detected during acceleration or motor operation. | Short circuit in motor cable, motor winding isolation failure, inter-turn fault, acceleration time too short. | Check motor and motor cables for short circuits or ground faults; increase acceleration time; check drive sizing. |
| OC2 | Overcurrent during deceleration | Overcurrent condition detected during motor braking/deceleration. | Deceleration ramp time too short; excessive load inertia; defective braking chopper. | Increase deceleration ramp time; check braking resistor / braking module; verify load dynamics. |
| OC5 | Overcurrent during steady state | Overcurrent detected during continuous steady-state operation. | Sudden load spike or mechanical jam, motor overload, earth fault. | Check mechanical load and drive mechanics for binding or overload; inspect motor insulation. |
| OU | DC bus overvoltage | DC bus voltage exceeded maximum allowable threshold. | Excessive regenerative energy during deceleration; high supply voltage; braking chopper or resistor open circuit. | Extend deceleration time; check mains voltage level; verify connection and value of external braking resistor. |
| LU | DC bus undervoltage | DC bus voltage fell below minimum operating limit. | Mains supply voltage too low; input phase failure; blown main supply line fuse. | Check mains voltage supply; check fuses and supply connection switches. |
| OH | Heatsink overtemperature | Inverter power module heatsink temperature exceeded maximum safety threshold. | Inadequate cabinet cooling; fan failure or clogged heat sink; ambient temperature too high. | Clean heatsink cooling fins; check internal fan operation; reduce cabinet ambient temperature. |
| OH4 | Motor thermal overload | Motor temperature sensor (PTC / thermal switch) tripped or thermal motor model threshold reached. | Motor operated continuously at high torque / low speed; mechanical overload; cooling fan failure on motor. | Allow motor to cool down; inspect motor cooling fan; check motor load conditions and PTC sensor wiring. |
| CE0 | Communication failure | Communication interruption between keypad / communication module and control board. | Bad electrical contact; keypad disconnected while power on; electromagnetic interference. | Verify proper mechanical seating of keypad on operating slot; check extension cable shield and grounding. |
| EEr | Internal EEPROM memory error | Non-volatile memory access or checksum error on control board. | Internal memory corrupted or hardware board fault. | Reset parameters to factory default setting; if fault persists, internal hardware fault — return unit for repair or replace unit. |
| LP1 | Motor phase failure | One motor output phase missing or disconnected. | Broken motor cable wire; loose terminal connection; contactor opened on output side. | Check output wiring continuity between drive terminals and motor; verify tightness of output terminals. |
Frequently Asked Questions
Which drive models are compatible with the Lenze 00358056 EMZ8201BB keypad?
The EMZ8201BB operating keypad is designed for use with Lenze 8200 vector and Lenze 8200 motec frequency inverters.
Can I transfer parameters between inverters without using a PC?
Yes, the keypad features integrated non-volatile EEPROM memory that stores one complete parameter set, enabling PC-free parameter copying between drives.
How is the keypad mounted remotely on a cabinet door?
The keypad connects remotely using the Lenze EMZ8272BB extension cable assembly and can achieve IP65 protection when installed with an optional door-mounting frame kit.
What information does the LCD status display show?
The LCD display indicates operating states such as RDY (Ready), IMP (Pulse Inhibit), and RUN (Operation), as well as active fault codes and live data like output frequency/speed, motor current, and DC-bus voltage.
What steps should be taken if a CE0 fault code appears?
A CE0 error indicates a communication failure between the keypad and control board. Check that the keypad is securely seated in its interface slot and verify shielding and grounding on any extension cable assembly.
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Data backup and recovery
Have you lost valuable parameters or data due to a malfunction while the manufacturer no longer provides support? At ABC Industrial Parts, we help you secure this data, both for common and specific products.
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:
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