Quad, Opt/Line Drv; Frequency; Left Hand; Right Hand - MERRICK Genetix Safety, Installation, Operation And Maintenance Manual

Note:This setting turns on a bias current and therefore should not be used if
an optical encoder is connected. Damage to the encoder may result.

Quad, Opt/Line Drv

This setting functions the same as "Quad, Opt/TTL" (see above), but is used
with optical encoders that have "Line Driver" outputs. These types of
encoders are sometimes used if there is a great distance between encoder
and GCM.

Frequency

This is a generic setting for use with encoders that have a basic sinusoidal
output; that is an output swings both negative and positive at a frequency
that is proportional to speed.
Direction
Tachos that are able to detect direction (i.e. quadrature encoders) must have
this parameter set correctly so that this feature functions correctly. The
available options are:

Left Hand

Right Hand

No Direction
Left Hand
This typically refers to an encoder that is mounted on the left side of the belt
(facing direction of travel). However, more technically, it means that channel
B of the encoder is leading channel A.
Right Hand
This typically refers to an encoder that is mounted on the right side of the
belt (facing direction of travel). However, more technically, it means that
channel A of the encoder is leading channel B.
No Direction
Direction of tacho rotation is not detectable. The GCM will only look at
channel A of the tacho port for pulses.
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