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EM-348-48V-PLI DC-MOTOR CONTROLLER 24-48V, 10A, Rs-485, Modbus

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EM-348-48V-PLI 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 shutdown. In -PLI version there are also PULSE COUNTER which can be used for end limit use. This counter value keep in memory of card also when power is turned off. FAULT output terminal indicates different failure situations. This pin is normally low, but is pulled up in overheat and conditionally also in current trip situation. DISABLE input disables driver as long as this is pulled up externally. Also it is
possible to link fault and disable pins of several units together and achieve a syncronous stop. The BRAKE output can be used to release external magnetic brake or control brake resistor in overvoltage situation.
There are two selectable control modes, continuous 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. There is also few special settings start-kick and auto reverse. 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.
This device is designed to control also with Rs-485 Bus.The control bus use Modbus RTU protocol and with the Bus there can be set, speed, direction, accelaration and deceleration ramps and current limit. Also the monitoring and parameter setting are possible with the Bus.
There is a separate instruction for operating the bus.

EM-348TECHNICAL DATA ( EM-348-48V-PLI prog -PLI v 2.0 )

Supply voltage cont. max. 20-55V
Overvoltage limit adjustable 15-65V ( hardware limitations )
Start up voltage 9V, shutdown voltage 8V
Continuous current output when ambient temp is 10A at 100% speed / 7A at 5-99% speed pwm=2kHz
7A at 100% speed / 4A at 5-99% speed pwm=16kHz
Peak ( 5s.) 30A at 2khz pwm and 25A at 16kHz pwm
Current limit adjustable 0.1-25A ( at start max 30A )
( 6A version currents are typically 2.5 times smaller )
Overheat limit 100°C
Start and stop ramp adjustable 0-5s
PWM frequency 2kHz / 16kHz
Input control logic: high =4-30V, low=0-1V
Control input impedances typ. 47kohm
Control input response time typ 5ms.
Control input impedances typ. 47kohm
Pulse input impedance typ 10kohm
Pulse input freq max. 700Hz
Fault out. PNP open coll. 22V max. 20mA
Disable in active Uin > 4V ( PNP )
Brake out NPN open coll max. 55V / 1.5A
min. brake res. 24V 15ohm / 48V 33ohm
Bus Rs-485, two wire half duplex, 9600kb/s
Motor and supply connectors 2.5mm
Control connectors 1mm
Dimensions 42x72x height 25mm
Dimensions in DIN-rail base 45x80x45mm
CE-tested for industrial environment ( emc )
Operating temp ( Ta ) -40...60°C
Weight 75g

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  • 2 pcs. in stock
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