CAUTION! Avoid shorting the motor leads to each other or to ground or the G203V will enter protective shut-down.
4-wire, 6-wire and 8-wire motor may be used. If 6-wire motors are used, they may be connected in half winding or full winding.
This is equivalent to an 8-wire motor connected in parallel or series. If a motor is connected in series or full winding, the motor’s
phase current rating is half of its parallel or unipolar rating. The choice depends on the high-speed performance required; a
parallel-connected motor will provide twice the power of a series-connected motor at the same power supply voltage.
DISABLE PIN
TERMINAL 7
Disable
This terminal will force the winding currents to zero when tied to the step and direction cont5V.
The DISABLE input on the G203V is optically isolated and requires logic “1” to DISABLE and logic “0” to ENABLE the drive. Once it is disabled,
the motor windings are unergenized and the motor freewheels.
STEP AND DIRECTION INPUTS
TERMINAL 8
Direction
Connect the DIRECTION line to this terminal.
TERMINAL 9
Step
Connect the STEP line to this terminal.
TERMINAL 10
Common
Connect this terminal to the controller GROUND
These 3 inputs are optically isolated from the rest of the drive. They will operate with 2.5V, 3.3V or 5V logic outputs with 2.5mA
minimum source drive current. The STEP input’s maximum rated frequency is 350kHz with a 50% duty-cycle waveform. The G203V
steps the motor on the 0 to 1 logic (positive) edge of the STEP signal.
TERMINAL 11
Current Set
Connect the current set resistor to this terminal
TERMINAL 12
Current Set
Connect the other end of the current set resistor to this terminal
This input matches the G203V’s current output to the motor windings. The G203V will accommodate motor winding currents
from 0 to 7A. Use the following equation to calculate the value, (in kilo-Ohms) of the current set resistor:
R (in kilo-ohms) = 47 * I / (7 – I) Use the nearest standard value 5% tolerance, 1/4W resistor for this setting.
Here are the current set resistor values for motor current in .5A increments. Round the appropriate answer to the nearest 5%
resistor value.
a.
1A – 7.8K
b.
1.5A – 12.8K
c.
2A – 18.8K
d.
2.5A – 26.1K
e.
3A – 35.25K
f.
3.5A – 47K
g.
4A – 62.67K
h.
4.5A – 84.6K
i.
5A – 117.5K
j.
5.5A – 172.33K
k.
6A – 282K
l.
6.5A – 611K
m.
7A – OPEN
