User
adjustments
Motor current - sets the motor phase current to 5.0, 4.375,
3.75, 3.125, 2.5, 1.875, 1.25, or 0.625 A rms.
using DIP
switch S1
Step size - sets the amount of shaft rotation per step (with the
decimal jumper installed). The settings are full, half, 1/5, 1/10,
1/25, 1/50, 1/125, and 1/250 steps per (micro)step. This
corresponds to 200, 400, 1000, 2000, 5000, 10,000, 25,000, and
50,000 (micro) steps per revolution with a standard 1.8° motor.
With the decimal jumper removed, the settings are 1/2, 1/4,
1/8, 1/16, 1/32, 1/64, 1/128, and 1/256 steps per (micro) step.
This corresponds to 400, 800, 1600, 3200, 6400, 12,800, 25,600,
and 51,200 (micro) steps per revolution.
Digital Electronic Damping control - enables this patented
feature which eliminates loss of torque and possible motor
stalling conditions when operating at mid-range speeds. This
instability is a phenomenon of the electronic, magnetic and
mechanical characteristics of a stepping motor system. The
compensation circuit damps mid-range oscillations by
advancing or delaying switching of the output current relative
to the incoming pulse train.
Idle current reduction (ICR) - enables or disables idle current
reduction which reduces motor winding current by 50% of its
rated value during motor dwell periods. ICR begins 0.1
second after the last input step pulse occurs. This delay can
also be set to 0.05 seconds or 1 second using a plug-on jumper.
Note: The current will return to 100% at the next step pulse.
using plug-on
jumpers
Step filter - when enabled (jumper installed) rejects noise
pulses on step input less than 500
η
s wide. Useful if maximum
step rate is 500 KHz.
Enable sense - allows the polarity of the enable input to be
reversed. With the jumper installed, the enable input
opto-isolator must be driven to enable drive. With the jumper
removed, enable input opto-isolator must be driven to disable.
using AC Switch
SW1
Off line 120/240 Vac - switch selects AC input. DO NOT apply
240 Vac with AC Switch in 120 Vac position.
6430 Installation & Hardware Reference Manual - Rev 1
1 - 3
Overview
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