Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 2364-SPM03A_A |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Type | Main Control Board (PCB) for Adjustable Frequency Drive |
| Series / Family | 2364 SPM series; 1305 / 1336 / early PowerFlex drive family |
| Board Revision | SPM03A, hardware/firmware rev A |
| Function | PWM control, speed regulation, I/O conditioning, fault handling, HMI interface |
| Reference Inputs Supported | 0–10 VDC, 4–20 mA, potentiometer, keypad, serial setpoint |
| Digital I/O | Programmable digital inputs and relay/output contacts (drive-model dependent) |
| Serial Interface | RS-485 / DF1 or Drive Executive port (typical 2364 fit) |
| Gate-Drive Interface | Isolated gate-drive outputs to IGBT power section |
| Feedback / Monitoring | Bus voltage sense, phase-current sense, heatsink thermal sense |
| Supply Derivation | Derived from drive internal LV supply (typically 15 V / 5 V logic rails) |
| Non-Volatile Storage | EEPROM / calibration constants and fault log retention |
| Operating Temperature | 0 … 55 °C (ambient inside drive enclosure) |
| Storage Temperature | -25 … 70 °C |
| Humidity | 5 … 95% non-condensing |
| ESD / Handling | CMOS/EEPROM devices; ground-strap handling mandatory |
| Certifications | cULus, CE (per parent drive bulletin) |
Main Features and Advantages
The control plane, isolated from the kill zone
The design strength of the 2364-SPM03A_A is the way it keeps the delicate reference and I/O world electrically separated from the several-hundred-volt switching events of the inverter. Gate-drive optos, isolated current sensors and a dedicated logic supply mean a noisy motor cable or a phase-to-ground event on the load side does not automatically wipe the speed setpoint or corrupt the serial link. That isolation is also why the board can be swapped without touching the motor or the line reactor — the intelligence is removable, the power is not.
Calibration that is actually portable
A less obvious virtue of the 2364-SPM03A_A is what lives in its non-volatile memory. The board carries the drive’s learned constants: autotune results, acceleration profiles, current limit and the fault history that tells you why the last trip happened. When the replacement board is the same revision and the parameters are reloaded from the backup, the motor behaves exactly as it did on Friday — no hunting, no re-marking the V/Hz curve, no surprise trip on overload. We treat the revision letter as a calibration match, not a formality, because a 2364-SPM03A_A with the wrong firmware will often power up and still refuse to speak the drive’s language.
A repair that costs a fraction of a rewrite
From the plant-floor angle, the board is the difference between a one-hour repair and a weekend project. A 2364-SPM03A_A swap restores the original operator keypad, the original terminal labels and the original PLC wiring. There is no new drive profile to map, no HMI tags to repoint and no control narrative to re-certify. On a regulated or validated line, that continuity is worth more than the copper on the board.
