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- BMD-20DIN ver.2 DC brush motor speed controller
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BMD-20DIN ver.2 DC brush motor speed controller
Voltage | 12 – 24 VDC |
Max. motor current | 0.2 - 20 A |
Peak motor current | 30 A |
Control methods | Analog speed control: 0…5 V, -10…10 V, 4…20 mA, PWM |
BMD‑20DIN ver.2 is a DC brush motor speed controller. The controller provides different methods of motor speed regulation, using potentiometers, analog or PWM signal. Acceleration and deceleration time are also adjustable. This motor speed controller provides current limitation function to prevent motor overloading.
Technical data of the DC brush motor controller BMD-20DIN ver.2
Technical data of the DC brush motor controller BMD-20DIN ver.2
Operating voltage | 12 – 24 VDC |
Continuous output current, adjustable | 0.2 - 20 A |
Peak output current | 30 A |
Analog speed control | 0…5 V, -10…10 V, 4…20 mA, PWM |
Speed control range | 1 : 100 |
Max. resistance of closed contacts | 4.7 kOhm |
Max. current consumption of the controller | 0.5 mA |
Description of the DC brush motor speed controller BMD-20DIN ver.2
The motor speed controller BMD-20DIN ver.2 is designed for speed regulation of DC brush motors with a supply voltage of up to 24V and a power of up to 500W.
Motor speed can be adjusted with one of the follow methods:
- internal potentiometer;
- external potentiometer;
- analog signal 4...20 mA;
- analog signal -10...+10 VDC;
- analog signal 0...5 VDC;
- PWM regulation.
Acceleration, direction and deceleration are set by internal regulators included in the design of the device.
The DC brush motor speed controller BMD-20DIN ver. 2 providess the following functions:
- start and stop a DC brush motor by a button on the front panel or by an external signal;
- motor overload protection with adjustable rated current;
- setting the ratio of acceleration and deceleration;
- motor short circuit protection;
- emergency stop of a DC brush motor "HARD STOP" in the event of a break in the electrical circuit of the protection circuit;
- temperature protection of power stages;
Parameters of external direction and start/stop signals:
- input type: clean contact;
- maximum resistance of the closed contacts: 4.7 kOhm;
- maximum input current: 0.5 mA;
- "START/STOP" and "DIR" inputs logic can be easily adjusted by a customer: the inputs can operate both as per signal level and as per a front of the signal;
- the default setting is operation as per a front of the signal for "START/STOP" input and as per a level of the signal for "DIR" input;
Changing the operation logic of input signals is carried out using the jumpers "START_PIN" and "DIR_PIN" at the controller board under the case. To change the logic, it is necessary to remove the back of the controller case, releasing the two latches next to the connectors. If the corresponding pair of contacts is closed by a jumper, their state corresponds to the “ON” value. If the jumper doesn’t close the contacts, the state of the contacts corresponds to the value "OFF".
The logic of operation of the control inputs "START/STOP" and "DIR", as well as the "Reverse" button with different positions of the jumpers "START_PIN" and "DIR_PIN" is shown in the figure below.
Dimensions of the DC brush motor speed controller BMD-20DIN ver.2
Connection of the DC brush motor speed controller BMD-20DIN ver.2