EM-348 is a full bridge DC-motor starter. It is designed to work with DC-motor in applications where some special functions are needed. Starter has adjustable acceleration and deceleration ramps, which make possible the smooth starts and stops. Adjustable current limit protects motor against overcurrent and it can also be used as an end-stop. Driver has two selectable pwm frequency 2 or 16kHz.
Power stage has smoothed switching technique which is achieved very low RF emissions, so external filter will not needed. Driver has also external brake output which can be used for control magnetic brake or braking resistor in regenerative braking.
EM-348-SPF firmware is designed for positioning use with motor or actuator with pulse sensors. Feedback is done with one or two line pulse signal. Although position feedback can be done with one pulse line it is always preferred and more secure to do it with two 0°/90° pulse lines. The positioning set signal can be used an analog control signal 0-5,5V. Input is freely scalable inside the range. The max. electrical accuracy of the driver and feedback is 0.2% which is adequate for most actuator positioning applications.
The driver includes many other dynamic adjustment features like parameter for load compensation, dead-zone setting (positioning window), start and stop ramps for smooth direction change and braking zone for well operating positioning. The settings and adjustments are done with parameters as in all new generation Electromen products. Included in the parameters is also the learn routine which will help to determine the full movement range fast and easily. Additively the movement range can be modified from both ends with SW-limit parameters. Possible cumulating pulse count errors can be avoided with manually or automatically triggerable home drive. The current limits and driving speeds can be set individually for both directions.
The parameter setting and monitoring can be done with Modbus or EM-236 interface unit, EM-328 with EmenTool-Lite PC-program. The Program updates can do with EmenTool
| TECHNICAL DATA | |
|---|---|
| PCB Version | v1, prog EM-348-spf v1.8 |
| Supply voltage continuous (max.) | 10-35V |
| Overvoltage limit adjustable | 15-40V |
| Startup voltage | 9V |
| Shutdown voltage | 8V |
| Continuous current output (when ambient temp.) | 15A at 100% speed / 10A at 5-99% speed (PWM=2kHz) |
| 10A at 100% speed / 5A at 5-99% speed (PWM=16kHz) | |
| Peak current (5s) | 30A at 2kHz PWM / 25A at 16kHz PWM |
| Current limit adjustable | 0.1-25A (max 30A at start) |
| (6A version currents are typically 2.5 times smaller) | |
| Overheat limit | 100°C |
| Start and stop ramp adjustable | 0-5s |
| PWM frequency | 2kHz / 16kHz |
| Analog inputs (pin 11 and 12) | 0-5V or 0-10V |
| Input control logic | High = 4-30V, Low = 0-1V |
| Control input impedance | Typ. 47kΩ |
| Pulse inputs (pin 2 and 3) impedance | Typ. 10kΩ |
| Pulse input frequency (max.) | 700Hz |
| Control input response time | Typ. 5ms |
| Fault output | PNP open collector, 12-22V max. 50mA |
| Brake output | NPN open collector, max. 35V / 2A |
| Disable input active | Uin > 4V (PNP) |
| Bus (RS-485) | Two-wire half-duplex, 9600kb/s |
| Motor and supply connectors | 2.5mm² |
| Control connectors | 1mm² |
| Dimensions (mm) | 42x72x25 (6A version: 42x72x18) |
| Dimensions with DIN-rail base (mm) | 45x80x45 |
| CE-tested for industrial environment (EMC) | |
| Operating temperature (Ta) | -40...60°C |
| Weight | 75g (6A version: 48g) |
