EM-A24C-JS1 is a compact DC motor driver module based on the proven EM-241 driver card. Designed for embedded integration, the module is PCB-mountable and requires minimal board area thanks to its vertical installation format.
The driver features an efficient H-bridge power stage with low EMC emission, capable of meeting industrial and household EMC directives without additional external components — a major advantage when integrating the module onto a motherboard.
Two PWM frequency options are available: 2 kHz for higher current capability and 16 kHz for silent operation.
The firmware version EM-A24C-JS1 is optimized for joystick and thumb-throttle applications. It includes two- or three-point calibration and standard DC-motor control functions such as current limiting, start/stop ramps, and load compensation. All settings are digitally adjustable through parameters.
Firmware updates can be carried out via the EmenTool interface unit.
Adjustment of parameters such as current limit, ramp times, and speed-2 value can be done using several EM interface units. The EM-236 is the basic parameter-setting device, while the EM-328 USB-serial converter allows configuration through a PC with the EmenTool Lite software.
| Supply voltage (continuous max.) | 10–35 V |
| Overvoltage limit (adjustable) | 15–40 V (connect motor to freewheel) |
| Overvoltage dynamic brake | 40 V (shorting motor poles) |
| Start-up voltage | 9 V |
| Shutdown voltage | 8 V |
| Continuous current output (Ta < 50 °C) |
12 A @ 100 % speed / 7 A @ 5–99 % speed (2 kHz PWM) 8 A @ 100 % speed / 4 A @ 5–99 % speed (16 kHz PWM) |
| Peak current (5 s) | 30 A @ 2 kHz / 25 A @ 16 kHz |
| Current limit adjustable | 0.1–25 A (max 30 A at start) |
| Overheat limit | 100 °C |
| Start / stop ramp adjustable | 0–5 s |
| PWM frequency | 2 kHz / 16 kHz (selectable) |
| Joystick input scale | 0–5 V |
| Input control logic | High = 4–30 V / Low = 0–1 V |
| Control input impedance | typ. 47 kΩ |
| Limit FW / BW input impedance | typ. 10 kΩ |
| Control input response time | typ. 5 ms |
| Fault output | NPN open collector max 30 V / 50 mA |
| Fault input activation | Uin < 1 V (NPN) |
| Motor and supply connectors | 2.5 mm |
| Control connectors | 1 mm |
| Dimensions | 42 × 72 × 25 mm |
| Dimensions (in DIN-rail base) | 45 × 80 × 45 mm |
| CE testing | Industrial environment (EMC approved) |
| Operating temperature (Ta) | −40 … +60 °C |
| Weight | 75 g |
