Lenze 9324MP.1A.62 Master Control Board
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Product Information
The Lenze 9324MP.1A.62 (also designated as EVS9324-MP) is a master control board engineered for Lenze 9300 Series size 9324 frequency inverters and servo drives, including EVS9324 and EVF9324 drive models. Operating on a 24 V DC auxiliary control supply, this board serves as the central processing engine for the inverter, maintaining drive timing and controlling a switching frequency of 8 kHz. Its modular, detachable design allows the entire control electronics assembly to separate directly from the power section, enabling maintenance technicians to replace the unit without unmounting or disassembling the primary drive housing.
Local control and system integration are provided through an I/O setup consisting of 6 digital inputs, 4 digital outputs, 2 analog inputs, and 2 analog outputs. For drive-to-drive networking, the board includes an onboard Systembus CAN interface supporting communication speeds up to 500 kbit/s, as well as an Automation Interface (AIF) slot. The AIF slot accommodates plug-in communication option modules such as PROFIBUS-DP (EMF2133IB), DeviceNet (EMF2173IB), and INTERBUS (EMF2111IB), or the Keypad XT module (EMF2102IB). Commissioning a replacement unit involves transferring configuration data stored in the internal non-volatile EEPROM, which holds up to four parameter sets. Parameters can be copied using the Keypad XT module or configured via Lenze Global Drive Control (GDC) PC software, with support from ABC Industrial Parts available to assist with configuration transfer when putting a spare unit into operation.
System status monitoring relies on direct onboard LED indicators, including a Green LED for ready or operation state and a Red LED for fault and error signalling. Diagnostic routines and error evaluation can be performed using the Keypad XT fault log history, Global Drive Control (GDC) software monitor, or Systembus CAN diagnostic objects. The board monitors operational faults including short circuits (OC1), motor overload (OC5), DC bus overvoltage (OU) or undervoltage (LU), heatsink overtemperature (OH), and fieldbus communication failures (CE0, CE1). When severe fault conditions occur, such as EEPROM write failure (EE1) or internal microcode and ASIC hardware errors (H05), the board indicates internal component damage that cannot be serviced in the field, making board replacement or professional repair through ABC Industrial Parts the recommended solution.
Technical Specifications
| Control Voltage | 24 V DC |
| Digital Inputs | 6 |
| Digital Outputs | 4 |
| Analog Inputs | 2 |
| Analog Outputs | 2 |
| Switching Frequency | 8 kHz |
| System Bus Interface | Systembus CAN (up to 500 kbit/s) |
| Automation Interface Slot | AIF Slot |
Programming and Configuration
The Lenze 9324MP.1A.62 control board utilizes internal non-volatile EEPROM memory capable of retaining up to four complete drive parameter sets. Parameters define motor data, current limits, operational ramps, and I/O assignments. Drive parameters can be modified and saved using Lenze Global Drive Control (GDC) PC software connected to the drive interface.
For direct configuration without a PC, parameter cloning can be performed using the Lenze Keypad XT module (EMF2102IB) plugged into the Automation Interface (AIF) slot. This enables direct copying of parameter sets from a functional master board onto a replacement unit, facilitating rapid field commissioning.
Communication and System Integration
Network integration is established through the built-in CANopen Systembus interface operating at transmission rates up to 500 kbit/s. This interface provides real-time, drive-to-drive master-slave coordination across multi-axis 9300 series drive installations.
To interface with higher-level plant automation systems, the board features an Automation Interface (AIF) slot. This slot supports plug-in fieldbus modules including PROFIBUS-DP (EMF2133IB), DeviceNet (EMF2173IB), and INTERBUS (EMF2111IB) for communication with central PLCs.
Diagnostics and Status Indication
Operational status and fault states are displayed on the front of the board via two LED indicators. Further system interrogation is supported using Keypad XT fault log history, Global Drive Control (GDC) software diagnostics, and Systembus CAN diagnostic objects.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Green LED | Green - Solid / Flashing | Ready / Operation State |
| Red LED | Red - Solid / Flashing | Fault / Error Indicator |
Replacement and Spare Part Considerations
When replacing a master board in Lenze 9300 series size 9324 inverters (such as EVS9324 or EVF9324), ensure the replacement board matches part number 9324MP.1A.62. This specific part designation guarantees proper scaling parameters for size 9324 drive hardware.
Prior to putting a replacement board into service, restore the application parameter set stored from the original unit using either a Keypad XT module or Global Drive Control software. Ensure optional communication cards (such as PROFIBUS EMF2133IB or DeviceNet EMF2173IB) are securely seated in the AIF slot and verify CAN bus termination resistor placement.
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 | Short circuit or extreme overcurrent detected at motor terminals / power stage. | Motor winding fault, short circuit in motor cable, excessive acceleration rate. | Check motor cable and terminal wiring for short circuits; check motor winding resistance; increase acceleration time. |
| OC5 | I2t Overload Motor | Calculated motor thermal overload exceeded limit (I2t integration). | Continuous mechanical overload on motor, inadequate cooling, incorrect motor rated current settings. | Reduce load on motor shaft; check current limits and motor parameters in drive setup. |
| OU | Overvoltage DC Bus | DC bus voltage exceeded maximum safety threshold. | Excessive regenerative energy during deceleration, brake chopper resistor open/faulty, mains supply overvoltage. | Extend deceleration ramp time; check brake resistor and brake chopper operation; verify input line voltage. |
| LU | Undervoltage DC Bus | DC bus voltage dropped below minimum operating threshold. | Mains supply failure, phase loss on AC supply line, precharge resistor failure. | Verify line input voltage across all phases; inspect supply fuses and circuit breakers. |
| OH | Heatsink Overtemperature | Power section heatsink temperature exceeded maximum safety threshold. | Fan failure, clogged ventilation slots, high ambient cabinet temperature. | Clean heatsink cooling fins; verify operation of internal cabinet/drive cooling fans; improve enclosure ventilation. |
| OH4 | Motor Overtemperature (PTC) | Thermal contact or PTC thermistor in motor winding tripped. | Motor overheating due to high load or insufficient external cooling. | Allow motor to cool down; check thermal sensor wiring; inspect motor fan. |
| CE0 | Communication Error AIF Slot | Communication failure between control board and automation interface module (AIF). | AIF option module loose or damaged; fieldbus cabling interrupted or missing termination. | Check seating of module in AIF slot; check communication cables and termination resistors. |
| CE1 | Communication Error Systembus (CAN) | Time-out or message error on onboard Systembus (CAN). | CAN bus wiring open, missing 120 Ohm termination resistor, incorrect baud rate or node address. | Inspect CAN bus connections, check bus termination resistors at both ends, verify baud rate setup. |
| EE0 | EEPROM Read Error | Corrupted or unreadable parameter data in internal non-volatile EEPROM memory. | Internal EEPROM memory corruption or control board hardware defect. | Perform factory default parameter reset; re-download parameter set; if persistent, internal board hardware fault requires control board replacement. |
| EE1 | EEPROM Write Fault | Failure writing parameter data to internal control board memory. | Non-volatile memory hardware failure on control board. | Internal board hardware failure — return control board for repair or replace 9324MP.1A.62 board. |
| H05 | Internal Hardware Error | Control board microcontroller microcode or internal hardware check failed. | Control board component fault or internal ASIC error. | Internal hardware failure — control board is not field-serviceable and must be replaced. |
Frequently Asked Questions
Which drive units are compatible with the Lenze 9324MP.1A.62 control board?
The 9324MP.1A.62 control board is designed for Lenze 9300 Series size 9324 drives, including EVS9324 and EVF9324 vector and servo drive inverters.
How are parameter settings transferred to a replacement 9324MP.1A.62 board?
Parameters can be cloned directly using a Keypad XT module (EMF2102IB) inserted into the AIF slot, or restored from a saved file using Lenze Global Drive Control (GDC) PC software.
What fieldbus networks are supported by the 9324MP.1A.62 control board?
The board features an onboard Systembus CAN interface up to 500 kbit/s and an AIF slot that accepts fieldbus cards for PROFIBUS-DP (EMF2133IB), DeviceNet (EMF2173IB), and INTERBUS (EMF2111IB).
What should be checked when fault code H05 or EE1 appears?
Fault codes H05 and EE1 indicate hardware or non-volatile EEPROM memory write failures on the control board. These conditions are non-serviceable in the field and require replacing or repairing the board.
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