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HD65 & HD130 STEPPER DRIVES USER GUIDE 11
6: Anti-resonance. Turn "on" to inhibit the anti-resonance
circuit (closing this switch performs the same function as
connecting terminal 13 to 0v.).
7 & 8: Mode switches. (See table on following page under Stepper
Mode Selection.)
9: Energise. Turn "on" to keep the drive permanently
energised (closing this switch performs the same function as
connecting terminal 7 to 0v).
0: Square-off inhibit. Turn "on" to delay the onset of square-off
until a clock pulse frequency of 15kHz is reached. This
effectively inhibits the square-off function. Square-off
operates normally with this switch "off". The switch is only
active in the 200 or 400 step/rev mode.
Current
Programming
The following table shows the settings of switches 1-4 for various
motor currents. The values shown in the table are two-phase-on
levels, and are nominal values only since they depend to some
extent on motor inductance. The selected current should not exceed
the current rating of the motor. In the half step mode the one-phase-
on current is approximately 35% greater than the level with two
phases on, giving a similar electrical power into the motor. Bear in
mind that if permanent square-off is selected there will be a
significant increase in average motor current at low speeds.
DIP Switch Settings
123 4
Motor Current
for HD65
Motor Current
for HD130
OFF OFF OFF OFF 6.5A 13A
ON OFF OFF OFF 6A 12A
ON ON OFF OFF 5.5A 11A
OFF OFF ON OFF 5A 10A
OFF ON ON OFF 4.5A 9A
OFF OFF OFF ON 4A 8A
ON ON OFF ON 3.5A 7A
ON ON ON ON 3A 6A
Stepping Mode
Selection
The following table shows the stepping modes selected by switches
7 and 8.