DC BRUSHLESS MOTOR CONTROLLER BLD-200 pages

DC BRUSHLESS MOTOR
CONTROLLER BLD-20
Manual

BLD.20.001
1. Product designation
Brushless controllers BLD-20 are electronic devices designed to operate and control brushless synchronous 3-phase dc motors with Hall
encoder. Motor operation parameters are set via controller’s inputs.

2. Technical characteristic
Controllers are designed to control speed, direction, smooth start and stop of brushless motors by input signals “START/STOP”,
“REVERSE”, analog “SPEED”, “ACCEL” and “RESET”.

Table 1
Controller
Power supply voltage, VDC
Maximum continuous current, A
Short-time maximum overload, A
Acceleration/Deceleration time, s

Dimensions:

BLD-20
24-48
20
<30
1/3-8

Environmental Conditions:
Ambient Temperature: -25…+50°C
Humidity: 90% RH or less upon condition +25°C
Condensation and freezing: none
Pressure: 650…800 mm of mercury

Img. 1 – BLD-20 dimensions

3. Construction and control elements
BLD-20 is designed as circuit plate with electronics elements, installed on a plate and covered with a metal case. Besides electronic
components, there are indicating and control elements, connection terminals and connectors on the board:
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terminal screws for power supply, brushless motor windings and encoder lines, and control circuit connection;
Buttons “START/STOP”, “REVERSE” and “RESET”;
Internal preset potentiometers to adjust speed “SPEED”, acceleration and deceleration “ACCEL”;
LED for indication of the controller status.

Control by inputs: To adjust motor speed internal potentiometer “SPEED” and analog input “(0..5)V” are provided. To adjust acceleration
and deceleration internal potentiometers “ACCEL” is provided. For sudden stop or for controller reset button “RESET” is intended. To
change the direction button and input “REVERSE” are intended. To stat or stop motion button and input “START/STOP” is intended.
With standard firmware “START/STOP” and “REVERSE” signals use pulse logic and activate as per the front edge of the signal. Firmware
with level signal logic is available as per a request.

4. Assembly and connection.
Please, learn this manual carefully before connection and assembly.
Please, wire just when power is off. Do not attempt to change wiring while the power is ON.
Please, provide a reliable contact in connection terminals. During wiring, please, observe the polarity and wire management.
4.1. Power supply and motor connection

Img. 2