EM-243C DC-MOTOR CONTROLLER 12-48V 50A
EM-243C 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. This device has also two settable speeds, which are usefull in positioning applications. Control inputs FW and BW start the forward and backward run. STOP is for the motor shut-down but there are also available individual limit inputs for FW and BW directions. SPEED-2 input activates preset speed-2, but it can also be used as input for analog speed control signal 0-5V. FAULT terminal has at the same time input and output function, the pin is normally high, but is pulled down in overheat and conditionally also in current trip situation. If FAULT-line is pulled down externally it will cause a stop and prevent the new start. For example, it is possible to link fault pins of several units together and achieve a syncronous stop. There are 2 selectable control modes, contionuous and impulse. In continuous mode the motor runs as long as the control is active. In impulse mode a short comand starts the motor, and only a new impulse will change the status. The card has selectable input logics. Inputs are divided in two groups, control and limit -inputs. Groups can be individually set for NPN or PNP logic. The parameters are set with EM-236 interface unit. Operation of the controller and some of its functional values can also be monitored with EM-236 interface unit. In C-version program is possible to select 16kHz pwm frequency ( = silent ) but notice that current output capability is lower with 16kHz.
Supply voltage nominal 12-48V, limits 10-58V
Start up voltage 9V, shutdown voltage 8V
Idle current typ 15mA
Motor current max. with 2kHz pwm
100% pwm 50A , 20-99pwm% 35A and peak 100A ( 5s )
Motor current max. with 16kHz pwm
100% pwm 40A , 20-99pwm% 20A and peak 60A ( 5s )
Current limit adjustable 1-100A
NOTICE ! during start ramp the current limit is 50% boosted
Overheat limit 100°C
Start and stop ramp adjustable 0-5s
PWM frequency 2kHz or 16kHz
Speed input scale (speed-2) 0-5 or 0-10V= 0-100% pwm
I-limit input scale ( stop ) 0-4V = 0-100A
Input control logic: high =4-30V, low=0-1V
Control input impedances typ. 10kohm
Control input response time typ 5ms.
Fault out. NPN open coll. max. 40V / 1A
Fault in actives Uin < 1V ( NPN )
Fan-output switch on 55°C, off 50°C ( only pcb Cv.2 of later )
Fan-output NPN max. 40V 2A
Break load output Max. 60V 5A
Vout lim output max 25V 15mA
Motor and supply connectors 2.5mm
Control connectors 1mm
Dimensions in DIN-rail base 110x80x55mm
CE-tested for industrial environment ( EMC )
Operating ambient temp ( Ta ) -40...60°C
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