Applied Motion 2035 - Manual (Page 6)

Using a Remote Speed Control Potentiometer
The 2035 O step motor driver includes an analog signal input connector that can be
used to control the oscillator speed externally. Normally, an on board potentiometer
controls the speed.
You will need:
• a 10k to 100k Ω linear potentiometer. A multiturn type is recommended.
• a shielded, three wire cable
A+
A-
B+ B-
8
lead
motor
8 Leads Series Connected
Eight lead motors can also be connected in two ways: series and parallel. As
with six lead motors, series operation gives you more torque at low speeds and less
torque at high speeds. In series operation, the motor should be operated at 30%
less than the rated current to prevent over heating. The wiring diagrams for eight
lead motors are shown below.
A+
A-
NC
B+ B- NC
6
lead
motor
Red
Black
Red/
Wht
Green
Grn/Wht
White
A+
A-
NC
B+ B- NC
6
lead
motor
Grn/Wht
White
Green
Red
Red/
Wht
Black
6 Leads Series Connected 6 Leads Center Tap Connected
8 Leads Parallel Connected
A+
A-
B+
B-
8
lead
motor
Orange
Org/Wht
Blk/Wht
Black
Red Red/
Wht
Yel/
Wht Yellow
Orange
Org/
Wht
Blk/Wht
Black
Red
Red/Wht
Yel/
Wht
Yel
low
Step A+ A- B+ B-
0 + – + –
1 – + + –
2 – + – +
3 + – – +
4 + – + –
DIR=1
cw
DIR=0
ccw
Step 3 is the Power Up State
Step Table
(full stepping)
NC = not
connected NC = not
connected
-11- -6-
To install the external pot:
• move switch #1 toward the EXTSPEED label. That disconnects the on board pot.
• wire your pot to the 2035 O:
➤ the potentiometer wiper connects to the WPR terminal
➤ the potentiometer CW terminal connects to the CW terminal
➤ the third pot terminal connects to the CCW terminal
➤ the cable shield connects to the CCW terminal
With this arrangement, speed will increase as you turn the external pot clockwise.
The frequency range will be 0 to 5000 steps per second.
The on board trimpots will still control acceleration and declerations times. Turning
the pots clockwise makes the acceleration and deceleration faster (i.e. reduces the
time to or from speed).
cw
external
pot 2035 O
CW
WPR
CCW