DC MOTOR CONTROLLER
IN:24VDC OUT:0-24VDC PEAK CURRENT:10A
TO BE USED SERVO MOTOR
24V/10A DC MOTOR CONTROLLER
Summary
MMT all-digital DC servo drive system adopts high-performance digital signal processor (DSP) and integrated circuit, and come out to be a cost effective product with simple circuit, high integration, easy operation, and strong practicability. MCAC506 provides three feedback loops: position loop, velocity loop and current loop. Three work control mode: position, velocity and torque. MMT matches with DC servo motor under 50V and 200W.
Features
* Position control: light isolate input PULSE/DIRECTION or CW/CCW signal;
* Speed control: input simulate 0-3.3V voltage signal (speed input by Pos.ff);
* Torque control: input simulate 0-3.3V voltage signal (torque input by Pos.ff);
* Light isolation servo reset input interface ERC;
* Light isolation servo failure alarm output interface ALM;
* Width of current loop: (-3dB) 2KHz (typical value);
* Width of velocity loop: 500 Hz (typical value);
* Width of position loop: 200 Hz (typical value);
* Quadrature encoder input interface at motor side: differential input (26LS32);
* Allow parameters download by pc or text display through interface RS232C;
* Perfect protection against overload, I2T, over-voltage, under-voltage, overheating, over speed, overproof protection;
* Green light for on, red light for protected mode or offline.
Ports details
X1: control signal input / output
Terminal block | Sign | Name | Note |
1 | DIR+ | Positive direction input | High effective |
2 | DIR- | Negative direction input | Low effective |
3 | PUL+ | Pulse positive input | High effective |
4 | PUL- | Pulse negative input | Low effective |
5 | ERC+ | Positive servo reset input | High effective |
6 | ERC- | Negative servo reset input | Low effective |
7 | ALM | Alarm output signal | collecting electrode output |
8 | EGND | Alarm output ground | collecting electrode output |
X2: feedback signal input of encoder
Terminal block
Sign
Name
Note
1
GND
Output power ground
2
PB-
Negative input of encoder B phase
3
PB+
Positive input of encoder B phase
Single end connection
4
PA-
Negative input of encoder A phase
5
PA+
Positive input of encoder A phase
Single end connection
6
VCC
Output power
X3: power
Terminal block
Sign
Name
Note
1
S-
Motor terminal S-
Motor armature
2
S+
Motor terminal S+
Motor armature
3
VDC
Input DC power
4
GND
Input power ground
Parameter adjusting and setting
(Potentiometer adjusting, CCW to minimize value, CW to maximize value)
One 4 bit double row pin on drive circuit board for the working mode setting, number 1, 2, 3, 4 respectively from the outer to inner side.
no plug in, position mode is pulse/direction;
plug in 1, speed control, speed input by Pos.ff;
plug in 2, torque control, torque input by Pos.ff;
plug in 1 and 2, position control for positive pulse/negative pulse input;
plug in 3, position control pulse/direction, but converse running direction.
B) 11 scale on the potentiometer, CCW to minimize the value to 0, CW to maximize the value to 10, and 5 in the middle.
Pos.ff : Position Feed-forward Control
Pos.P: position proportional gain control
Pos.D: position differential control
Vel.p : velocity proportional gain control
Tor. P: Current proportional gain control
Servo system includes three feedback loop: position, velocity and torque(current). The inner loop responses with the fastest speed, and the middle loop must response faster than the outer loop. A vibration or poor response will happen when the rule has not been followed. Customer needs to adjust the parameter of position loop and velocity loop only. Parameters of system would restrict each other, the output of position feedback would be unstable when just only the position feedback gains, which would lead to an unstable result of the whole servo
