EM-356A BRUSHLESS DC-MOTOR DRIVER 12-35V 15A ( 20A )
EM-356A is brushless DC-motor driver with hall sensor feedback. The unit has a mosfet power stage with good efficiency and it meets also todays EMC requirements. The driver can be used with 120° commutation. This driver has true 4Q power stage, and it makes possible to use regenerative braking . In this braking method the supply voltage rises, this voltage rising can be controlled with braking resistor. If uses battery supply then the braking energy can be leaded back to battery and braking resistor will not needed.
The unit has the basic digital command inputs like direction, start/stop, disable, speed-2 activation and there is analog inputs for speed and current control. EM-356A has PNP output for fault indication use. Some input and output functions can be modified with parameters. Driver includes overvoltage, undervoltage and overtemperature protections. These fault situations are indicated with fault on-board LED. 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 mode. Speed adjust range, closed loop rpm range and ramps can be set with parameter. Anolog input are filtered so that there can also use PWM signal for control speed and current.
Setting can be done digitally with EM-236 interface unit or with Emen-Tool lite program installed in PC and EM-328 adapter cable. Parameters stored into nonvolatile memory of device. This interface unit can also be monitored the current and rpm of motor.
Device can be installed in DIN-rail base and some enclosure options are also available.
Supply voltage 12-24V ( 11-35Vdc )
Overvoltage shut down 40V
Idle current typ. 30mA
Max current 15A cont. ( Tamb. 40 °C )
Max. current 20A cont. ( with fan, Tamb. 40 °C )
Max current peak 40A ( max 2s )
Max brake output current 10A
Pwm frequency typ. 16kHz
Overtemperature Temp shut down 90°C
Current limit setting 1-40A ( step 1A )
Current limit analog scale 0-5V = 0-40A
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
Fault outputs NPN max 50mA
Fan output NPN max. 100mA
EMC measured for industrial and env.
PCB material flammability class UL94V-0
Dimensions 89x73x32mm ( height 44mm with fan )
Weight 150g and 200g with fan
- EN_em-356A.pdf - Download product file (1273 kb)
- EN_em-352_367_Modbus_Data_Address_1v0.pdf - Download product file (134 kb)