EM-366A is a compact and efficient brushless DC motor driver designed for demanding automation and motion-control applications. The driver features Hall sensor feedback, true 4-quadrant operation, and RS-485 Modbus communication for flexible system integration.
Its high-efficiency MOSFET power stage supports 120° Hall commutation. Digital and analog control inputs, configurable parameters, and open- or closed-loop speed control make the driver adaptable to a wide range of applications.
The EM-366A uses a high-efficiency MOSFET power stage designed to meet modern EMC requirements. The unit supports 120° commutation and provides true 4-quadrant operation with regenerative braking.
During braking, the supply voltage rises and can be controlled using an external braking resistor. In battery-powered systems, the regenerated energy can be returned to the battery, eliminating the need for a braking resistor.
The EM-366A includes digital command inputs for direction, start/stop, disable, and speed-2 selection. Analog inputs are provided for speed and current-limit control.
A fault indication output provides external status information. Several input and output functions can be modified using parameters.
The EM-366A provides two selectable speed control modes:
Start and stop ramps operate in both speed control modes. Adjustable parameters allow the speed range, closed-loop RPM limits, acceleration ramp, and deceleration ramp to be adapted to the application.
Filtered analog inputs can be used for both speed and current-limit control. The analog input range can be selected from 0–5 V up to 0–10 V.
The 100 Hz input filtering also allows PWM signals to be used for speed and current-limit control.
The motor current limit can be set from 1 to 60 A in 1 A steps. An external 0–5 V analog signal can also be used for current-limit control.
The driver includes protection against overvoltage, undervoltage, and overtemperature.
The integrated RS-485 Modbus interface enables external control, parameter access, and integration with a host system or PLC.
Parameters can be configured digitally using the EM-236 Interface Unit. PC-based configuration is available using EmenTool Lite together with the EM-328 adapter cable.
Parameter settings are stored in the driver’s non-volatile memory. The interface also supports real-time monitoring of motor current and RPM.
A dedicated 12 V fan output is available for temperature-controlled cooling. The fan output switches on when the driver temperature rises above 55°C and switches off when the temperature falls below 50°C.
When fan cooling is used, the specified continuous current ratings are available at an ambient temperature of 50°C.
The driver can be installed on a DIN-rail mounting base. Optional enclosure versions are available for different installation environments.
| Supply voltage | 12–48 V nominal (11–58 VDC) |
| Overvoltage shutdown | 60 V |
| Undervoltage shutdown / start-up | 10 V / 11 V |
| Idle current | Typ. 30 mA |
| Idle current in shutdown | 1 mA |
| Maximum continuous current at 24 VDC | 30 A at Tamb = 25°C |
| Maximum continuous current at 48 VDC | 25 A at Tamb = 25°C |
| Continuous current with fan cooling | Above continuous current ratings available at Tamb = 50°C |
| Maximum peak current | 60 A for max. 2 s |
| Thermal losses | 10 W at 20 A / 20 W at 30 A |
| Maximum brake output current | 10 A |
| PWM frequency | Typ. 16 kHz |
| Overtemperature shutdown | 90°C |
| Current-limit setting | 1–60 A in 1 A steps |
| Current-limit analog scale | 0–5 V = 0–75 A |
| Digital input OFF level | 0–1 V or open |
| Digital input ON level | 4–30 V |
| Digital input impedance | 10 kΩ |
| Digital input response time | 2 ms |
| Analog input range | 0–5 V up to 0–10 V |
| Analog input impedance | 100 kΩ |
| Analog input filter | 100 Hz |
| Fault outputs | NPN, max. 50 mA (5 V / 12 V) |
| Fan output | NPN, 12 V, max. 100 mA |
| Fan output control | ON > 55°C / OFF < 50°C |
| EMC | Measured for industrial environment |
| PCB flammability class | UL94V-0 |
| Dimensions | 108 × 91 × 30 mm |
| Weight | 230 g |
Ordering larger quantities +100pcs.
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