EM-241B-PLI DC-Motor Controller

EM-241 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 program version there is added PULSE COUNTER which can be used for end limit use. This counter value keep in memory of card also when power is turned off. 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 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.


TECHNICAL DATA

Supply voltage (cont.)max. 10-35V
Overvoltage limitadjustable 15-40V (connect motor to freewheel)
Overvoltage dynamic brake40V (shorting motor poles)
Start-up voltage9V
Shutdown voltage8V
Motor current (cont.)max. 15A
Motor current (peak)max. 30A
Current limit adjustable0.1-20A (max. 30A at start)
Overheat limit100°C
Start and stop rampadjustable 0-5s
PWM frequency2kHz
Speed input scale (speed-2)0-5V = 0-100% PWM
Input control logicHigh = 4-30V, Low = 0-1V
Control input impedancetyp. 47kΩ
Pulse input impedancetyp. 10kΩ
Pulse input frequency (max.)1000Hz
Control input response timetyp. 5ms
Fault outputNPN open collector, max. 30V / 50mA
Fault input activeUin < 1V (NPN)
Motor and supply connectors2.5mm
Control connectors1mm
Dimensions42 × 72 × 25mm
Dimensions (DIN-rail base)45 × 80 × 45mm
CE certificationTested for industrial environment (EMC)
Operating temperature (Ta)-40...60°C
Weight75g

Product files

EN_em-241B-pli.pdf (186,64 KB)
EN_em-Rail_bases.pdf (2.833,53 KB)
ENemmetenc.pdf (354,19 KB)
EM-241C_3D.zip (2.566,25 KB)
Stock: 313 pcs.
55,00 €
VAT 0%

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