Pdo 3540 – Applied Motion PDO3540 User Manual
Page 14
-13-
6
5
4
3
STEPS/REV
200
(FULL)
6
5
4
3
STEPS/REV
400
(HALF)
6
5
4
3
STEPS/REV
1000
(1/5)
6
5
4
3
STEPS/REV
2000
(1/10)
6
5
4
3
STEPS/REV
5000
(1/25)
6
5
4
3
STEPS/REV
10000
(1/50)
6
5
4
3
STEPS/REV
12800
(1/64)
6
5
4
3
STEPS/REV
18000
(.02
o
)
6
5
4
3
STEPS/REV
20000
(1/100)
6
5
4
3
STEPS/REV
21600
(1 arc min)
6
5
4
3
STEPS/REV
25000
(1/125)
6
5
4
3
STEPS/REV
50800
(1/254)
6
5
4
3
STEPS/REV
50000
(1/250)
6
5
4
3
STEPS/REV
36000
(.01
o
)
6
5
4
3
STEPS/REV
25600
(1/128)
6
5
4
3
STEPS/REV
25400
(1/127)
Selecting Microstep Resolution
-14-
Joystick Mode
In this mode, speed and direction are determined by the voltage applied to the WPR
(wiper) terminal. 2.5 volts is “stopped” (no speed). Increasing the WPR voltage
toward 5 volts results in forward motion: speed increases with voltage. Decreasing
the WPR voltage from 2.5 toward 0 results in reverse motion, with speed increasing
as voltage decreases. In joystick mode, the PDO 3540 operates at 12800 steps/rev.
The maximum speed is determined by two things: the state of the SPEED input and
the HI SPEED and LO SPEED trimpots. When the SPEED input is ON, the speed
range of the joystick can be adjusted with the LO SPEED pot, up to 5 rev/sec (300
rpm). When the SPEED input is OFF (or open), the joystick speed range is adjusted
with the HI SPEED pot, up to 25 rev/sec (1500 rpm). Turning the pots clockwise
increases the speed.
In joystick mode, limit switches can be connected to the PDO 3540 to prevent
motion outside of defined limits. The forward limit should be connected to the
STEP input and the reverse limit should be connected to the DIR input. When the
forward limit is ON, the motor will not move forward (that is, when the joystick
voltage is between 2.5 and 5 volts). When the reverse limit is ON, the motor will
not move when the joystick is in the 0 to 2.5 volt range. If you don’t need limits,
you can leave the STEP and DIR inputs unconnected.
5k
Ω
joystick
joystick "fire" button
fwd
rev
PDO 3540
SPEED+
DIR-
STEP-
SPEED-
CCW
WPR
CW
+
5-12
VDC
SUPPLY
-
DIR+
STEP+
rev limit switch
fwd limit switch
Typical Wiring for Joystick Mode