EM-356C is a compact brushless DC motor driver with hall sensor feedback and an efficient MOSFET power stage, designed for 120° commutation. The true 4-quadrant power stage enables regenerative braking: during braking the supply voltage rises and can be controlled with a braking resistor, or in battery-powered systems the energy can be fed back to the battery, eliminating the need for a resistor.
The device includes basic digital command inputs such as direction, start/stop, disable and speed-2 activation, as well as analog inputs for speed and current control. Fault status is indicated by an on-board LED and a PNP indication output. Several input and output functions can be customized via parameters.
The EM-356C supports two speed control modes:
Start and stop ramps operate in both modes. Speed range, closed-loop RPM range and ramp times are parameter adjustable. The analog inputs are filtered, allowing the use of a PWM signal to control both speed and current.
As an option, the EM-356C can be equipped with an RS-485 interface supporting the Modbus protocol, enabling external control, parameter setting and monitoring from a host system or PLC.
Settings can be configured digitally using the EM-236 interface unit or the Emen-Tool Lite PC software together with the EM-328 adapter cable. All parameters are stored in non-volatile memory, and the interface allows monitoring of motor current and RPM.
The device can be mounted on a DIN-rail base, and several enclosure options are available. A version with a cooling fan is also available for higher continuous current capability.
| Supply voltage | 12–48 V (11–56 VDC) |
| Overvoltage shutdown | 60 V |
| Idle current | typ. 30 mA |
| Max current (cont.) | 15 A (Tamb 40 °C) |
| Max current (cont., with fan) | 20 A (Tamb 40 °C) |
| Max current (peak) | 40 A (max 2 s) |
| Max brake output current | 5 A |
| PWM frequency | typ. 16 kHz |
| Overtemperature shutdown | 90 °C |
| Current limit setting | 1–40 A (step 1 A) |
| Current limit analog scale | 0–5 V = 0–40 A |
| Digital input logic level | “Off” = 0–1 V or open / “On” = 4–30 V |
| Logic input impedance | 10 kΩ |
| Digital input response time | 2 ms |
| Speed input range | 0–5 V up to 0–10 V |
| Analog input impedance | 100 kΩ |
| Analog input filter | 100 Hz |
| Indication output | PNP 12 V, max 30 mA |
| Fan output | NPN max 70 mA |
| EMC | Measured for industrial environment |
| PCB flammability class | UL94V-0 |
| Dimensions | 89 × 73 × 32 mm (height 44 mm with fan) |
| Weight | 150 g (200 g with fan) |
