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EM-347A BRUSHLESS DC-MOTOR DRIVER 12-36V 55A EM-347A-fan 12-36V 70A

156,00 € /kpl

EM-347A is a brushless DC-motor driver with hall sensor feedback. The unit has a mosfet power stage with good efficiency and it meets today's EMC requirements. The driver can be used with 120° commutation. This driver has true 4Q power stage, which makes it possible to use regenerative braking. In this braking method the supply voltage rises, but voltage rising can be controlled with a braking resistor. If using battery supply, then the braking energy can be lead back into the battery and a braking resistor will not be needed. The unit has basic digital command inputs like direction, brake, start/stop, disable and there are analog inputs for speed and current control. One digitally presetable second speed (speed-2) is possible to activate with digital command input. EM-347-48V has two NPN outputs for fault and overcurrent indication use. Some input and output functions can be modified with parameters. Driver includes overvoltage, undervoltage and overtemperature protection. These fault situations are indicated with fault on-board LED. Overtemperature and current limit situations can be reset with reset input, reset-timer or by setting analog speed control to value to 0. There are two control options for speed. Direct control ( open loop ) sets motor voltage in propotion to control voltage as with a standard DC-motor. Closed loop uses hall sensor feedback for speed control. This mode offers good speed regulation. Start and stop ramps work in both modes. Speed adjust range, closed loop rpm range and ramps can be set with parameters. Analog inputs are filtered so that they can also use PWM signal for controlling speed and current.
Settings can be done digitally with EM-236 interface unit or with Emen-Tool lite program installed in PC and EM-268 adapter cable. Parameters are stored into non-volatile memory of device. This interface unit can also monitor the current and rpm of motor. If necessary, the device also has an optional cooling fan available, which can be controlled with its designated output. This output switches on fan, when temperature rises over 65 deg.
The device can be installed in DIN-rail base and some enclosure options are also available.



Supply voltage 12-36V ( 11-42Vdc )
Overvoltage limit 15-65V ( adjustable )
Idle current typ. 30mA
Max current 55A cont ( Tamb. 50 °C )
Max current 70A cont. with fan cooling
Max current peak 100A ( max. 5s )
Max brake output ( pin-21 ) current 25A
Brake resistor recom.value 1-10ohm
Pwm frequency typ. 16kHz
Overtemperature shut down 90°C
Fan output switch on > 65°C
Current limit setting 1-100A ( step 1 A )
Current limit analog scale 0-5V = 0-100A
Logic level of digital inputs
"off" = 0-1V or open / "on"= 4-30V
Input impedance of logic inputs 10k
Response time of digital input 2ms
Analog input range 0-5V up to 0-10V
Input impedance of analog inputs 100k
Input filter of analog input 100Hz
Overcur. and fault outputs NPN max 50mA
Output for fan cooling 12V max. 100mA
EMC measured for industrial envinronment
PCB material flammability class UL94V-0
Dimensions 140x122x50mm
Weight 650g



  • 31 kpl varastossa


  • 156,00 € /kpl