EM-300 Brushless DC-Motor Driver 12-35V 3/4A and RS-485 RTU Modbus
EM-300 is a brushless DC-motor driver for motors with hall sensor feedback. The unit has a mosfet power stage with good efficiency and it meets today's EMC requirements. The unit has basic digital command inputs like direction, start/stop and analog input for speed control. The device has one NPN output for fault and overcurrent indication use. Indication output functions can be defined with parameters. The fault situations are also indicated with on-board LED.
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 mode uses hall sensor feedback for speed control. This mode offers good speed regulation. Start and stop ramps are working in both modes. Speed adjust range, closed loop rpm range and ramps can be set with parameters. Analog input is filtered, so that PWM signal of PLC can be used to control speed.
Parameter setting can be done digitally with EM-236 interface unit or with Emen-Tool lite PC-programand EM-268 adapter. There is also the option of using an iPhone with Ementool-APP and EM-326 adapter. The parameter settings are stored into driver's non-volatile memory. The parameter interfaces can be also used for motor current monitoring.
Driver card can be installed in DIN-rail base and some enclosure options are also available.
Supply voltage 12-24V ( 11-35Vdc )
Idle current typ. 30mA
Max current 3/4A cont. ( Tamb. 40 °C )
4A with -HC version = heatsink installed
Max current peak 6A ( max 5s )
PWM frequency typ. 32kHz
Current limit setting 0.1-6A ( step 0.1 A )
Logic level of digital inputs
0-1V or open = "off" / 4-30V = "on"
Logic level of disable input
0-1V or open =disabled / 4-30V =on duty
Input impedance of logic inputs 10k
Response time of digital inputs 2ms
Analog input range 0-5V or 0-10V
Input impedance of analog input 47k
Speed input low pass filter fc. = 40Hz
Speed input pwm freq. recom. > 300Hz
NPN Indication output impedance 100ohm
Rs-485 Speed 9600 / 19200kbs
EMC measured for industrial and household env.
PCB material flammability class UL94V-0
Motor and supply connectors, max 2.5mm² cable
Control connectors, max 1mm² cable
Din-rail option EM-KP72-65
Metal-enclosure option EM-T17
Weight 90g ( -HC type 170g )
- EN_em-300.pdf - Download product file (1514 kb)