Operat ion CDHD
186 User Manual
Va rCom D e scription
GEARMODE 0
Encode r Follow e r .
Signals are received on the Controller interface at
pins 28 and 11 (Quadrature A), and pins 9 and 27
(Quadrature B).
Alternately, if inputs 5 and 6 are set to I NMODE 17 and 18,
signals are received from Fast I nputs 5 and 6 on the
Cont roller interface at pins 32 and 15.
GEARMODE 1
Pulse and Dir e ct ion .
Signals are received on the Controller interface at
pins 28 and 11 (Pulse), and pins 9 and 27 (Direction).
Alternately, if inputs 5 and 6 are set to I NMODE 17 and 18,
signals are received from Fast Inputs 5 and 6 on the
Cont roller interface at pins 32 and 15.
GEARMODE 2
Up/ D ow n Count ing.
Signals are received on the Controller interface at
pins 28 and 11 (Up) and pins 9 and 27 (Down).
Alternately, if inputs 5 and 6 are set to I NMODE 17 and 18,
signals are received from Fast I nputs 5 and 6 on the
Cont roller interface at pins 32 and 15.
GEARMODE 3
Encode r follow er ( secondary encoder ) .
Signals are received on the Machine interface at
pins 1 and 11 (Quadrature A) and pins 2 an 12 (Quadrature
B).
GEARMODE 4
Pulse and dir ection ( secondar y encoder) .
Signals are received on the Machine interface at
pins 1 and 11 (Pulse), and pins 2 and 12 (Direction) .
Regardless of the gearing m ode used, the input signal is subject to gearing
calculat ions that allow you t o set the ratio of input pulses t o encoder counts.
Gearing sets up a relationship between the number of input pulses (HWPEXT
counts) and the posit ion increment s of the m otor shaft (or actual m otor position,
PFB). The rate at which position increm ents of the m ot or shaft ( m ot or speed)
occur is determined by the gearing relationship and the line frequency of the
pulse train. The gearing relationship is as follows:
In addition to tuning the current, velocity and position loops, the following are
some of the param et ers used t o configure and m onit or the gearing.
Va rCom Description
GEAR Activat es the gearing function.
GEARI N Numerator of the gearbox equation.
The sign of the GEARI N determines the direction of rotation.
GEAROUT Denom inat or of the gearbox equation.
XENCRES Resolution of the external pulse source.
HWPEXT The posit ion measured by an external feedback device.
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