EM-296C is a four-quadrant DC motor speed controller based on the PWM control principle, providing high efficiency and smooth motor operation. The controller is designed specifically for precise speed control applications.
The motor RPM is regulated against supply voltage changes, and the built-in RxI load compensation improves stability especially at low RPM. The adjustable current limit can either limit motor torque or shut down the motor for protection.
The controller includes auxiliary inputs and outputs for flexible system integration:
Brake resistor recommendations:
Settings can be configured using the EM-236 interface unit or the EM-328 PC dongle together with EmenTool Lite software. The EM-236 connects to the red on-board connector of the device.
Output pin 11 configuration and Output-1 behavior are adjustable via parameters.
| Feature | EM-295C | EM-296C |
|---|---|---|
| Motor direction | One direction | Two directions (4-quadrant) |
| Regenerative braking | Yes | Yes |
| Recommended motor power | 200 W @12V 300 W @24V 400 W @48V |
200 W @12V 300 W @24V 400 W @48V |
| Continuous motor current (2 kHz) | 25 A | 25 A |
| Continuous motor current (16 kHz) | 20 A | 20 A |
| Peak motor current | 40 A (10 s) | 40 A (10 s) |
| Current limit adjustable | Yes | Yes |
| Start / Stop ramps | 0–2.5 s adjustable | 0–2.5 s adjustable |
| Brake resistor control output | Yes (Output 1, max 3 A) | Yes (Output 1, max 3 A) |
| Magnetic brake control | Yes | Yes |
| Auxiliary inputs | Limit / Stop / Brake / Freewheel | Limit / Stop / Brake / Freewheel |
| Fan option | No | Yes (higher continuous current) |
| Weight | 80 g | 115 g (130 g with fan) |
| Operating temperature | -40 … +70 °C | -40 … +70 °C |
| Supply voltage nominal | 12–48 V (10–58 VDC max) |
| Overvoltage shutdown | max 60 V (adjustable) |
| Motor current (cont., 2 kHz PWM) | 25 A (Ta < 50 °C) |
| Motor current (cont., 16 kHz PWM) | 20 A (Ta < 50 °C) |
| Motor current (peak) | 40 A (10 s) |
| Voltage drop | typ. 0.7 V at full current |
| PWM frequency | 2 kHz or 16 kHz |
| Start ramp | 0–2.5 s (adjustable) |
| Stop ramp | 0–2.5 s (adjustable) |
| Control range | 0–5 V or 0–10 V (adjustable) |
| Set input impedance | 100 kΩ + Rin socket |
| Output range | 0–10 V … 0–55 V |
| Output 1 | NPN open collector, max 3 A |
| Indication (pin 11) | PNP 12 V / 10 mA (50 mA fan) |
| Control input 1 | PNP, Rin 100 kΩ |
| Control input 2 | PNP, Rin 10 kΩ |
| Control input levels | Low = 0–1 V / High = 4–30 V |
| Power connectors | 2.5 mm |
| Control connectors | 1 mm |
| EMC | Measured for industrial environment |
| Operating temperature (Ta) | −40 … +70 °C |
| Weight | 115 g (130 g with fan option) |
