Magtrol DSP6000 User Manual - page 19
13
Magtrol Model DSP6000 Dynamometer Controller
Chapter 4 - The DSP6000 as a Stand-Alone Unit (Local Control)
Desired results:
•
The dynamometer should load the motor under test
to the load point quickly with little or no overshoot
when the BRAKE function cycles ON or OFF.
Do not exceed the capabilities of the
dynamometer or the power source in use.
Motors draw very large currents when
held at locked rotor, and overheating may
result.
When using torque control, you cannot
test induction motors beyond breakdown,
except at locked rotor.
S
ET
S
PEED
C
ONTROL
When using speed control, motors between 0 and 100
RPM cannot be tested unless the dynamometer is
equipped with an optional speed encoder.
1. Use the SHIFT button to enable the MAX SPEED
function.
2. Use the UP ! and DOWN " buttons and the
Decrease/Increase Dial to set a value equal to or
slightly greater than the free-run speed of the motor
under test.
3. Press the SHIFT button to exit the MAX SPEED
function.
4. Press the SPEED SET button.
5. Use the UP ! and DOWN " buttons and the
Decrease/Increase Dial to set a speed equal to the
max. speed.
6. Press the P button.
7. Use the Decrease/Increase Dial to preset a value of
10.
8. Press the I button.
9. Use the Decrease/Increase Dial to preset a value of
15.
10. Press the D button.
11. Use the Decrease/Increase Dial to preset a value of
0.
12. Use the BRAKE ON/OFF button to turn the brake
ON.
13. Start your motor under test.
14. Press the SPEED SET button and adjust the setpoint
to the desired speed.
Desired results:
•
The dynamometer should load the motor under test
to the desired speed quickly with little or no
overshoot when the BRAKE button is cycled ON
or OFF.
NOTE:
If the response is too slow or
oscillatory, adjust the values for
P, I and D.
S
ET
O
PEN
L
OOP
C
ONTROL
1. Use the BRAKE ON/OFF button to turn the brake
ON.
2. Press and hold the TORQUE SET button until you
hear a second beep.
3. The TORQUE SET POINT display will now
indicate 0.00%.
4. Use the UP ! and DOWN " buttons and the
Decrease/Increase Dial to set a value of current
equal to the percent of full scale output (1 Amp).
5. To exit the Open Loop Control mode, press any of
the PID buttons or the SPEED SET button.
Desired results:
•
The dynamometer should load the motor under test.
Because the mode is open loop, the controller will
not stabilize on speed or torque, but will apply a
constant current to the dynamometer brake. The
actual loading will change as the brake heats up or
as other external factors change. The PID's have no
effect in this mode.
S
ET
U
P
I/O P
ARAMETERS
1. Press and release SHIFT.
2. Press SETUP.
3. Press the DOWN " button twice.
4. Press SHIFT.
5. Press UP ! or DOWN " until you see the
desired contrast level.