EM-295C is a high-efficiency, one-direction DC motor speed controller based on the PWM control principle. The device is designed specifically for accurate and stable speed control applications.
Motor RPM is regulated against supply voltage variations, and the built-in RxI load compensation improves stability especially at low RPM. The adjustable current limit can 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 serial interface unit or the EM-328 PC dongle together with the EmenTool Lite PC software. Connect the EM-236 interface to the red on-board connector of the device.
Output-1 configuration is adjustable via parameters (e.g. parameter 11). Maximum output current is 3 A (diode recommended for inductive loads).
| 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 speed |
| 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) |
| Output range | 0–10 V … 0–55 V |
| Output 1 | NPN open collector with 2.2 kΩ pull-up |
| Output 1 max current | 3 A (diode required for inductive load) |
| Indication output (pin 11) | PNP open collector 12 V, max 10 mA |
| 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 | EN-50081-2 & EN-50082-2 (industrial) |
| Operating temperature (Ta) | −40 … +70 °C |
| Weight | 80 g |
