
7.SERVO INTERFACE B-63943EN/02
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7.3.1 Overview
When a separate detector such as a rotary encoder or linear encoder
with an analog output of 1 Vp-p is used, an analog input separate
detector interface unit is used. The analog input separate detector
unit is connected via an optical cable as a unit on the FSSB line. Up
to four 1-Vp-p output separate detectors can be connected to a basic
unit. One additional unit (A02B-0236-C204) can be connected to the
basic unit with a flat cable. Four separate detectors with digital
output can be connected to the additional unit. When five or more
1-Vp-p output separate detectors are to be used, more than one basic
unit (analog input separate detector interface unit) is required. The
JA4A connector is provided for the battery for absolute position
detectors connected to the additional unit.
The maximum number of separate detector interface units that can be
connected to one FSSB line is two for HRV2 and HRV3 or one for
HRV4, regardless of which input type, the analog input type or digital
input type, is used. Therefore, for HRV2 and HRV3, up to 16
separate detectors can be connected per line; for HRV4, up to eight
separate detectors can be connected.
NOTE
1 The analog input separate detector interface unit
connected to the first or second FSSB line is
allowed full close control with the axis for which the
first or second FSSB line is set. The interface unit
is not allowed full close control with the axis for
which the third FSSB line is set.
2 The analog input separate detector interface unit
connected to the third FSSB line is allowed full
close control with the axis for which the third FSSB
line is set. The interface unit full is not allowed
close control with the axis for which the first or
second FSSB line is set.
3 Unused optical connectors must be covered with
the caps.
4 A digital output encoder refers to an encoder that
outputs A and B rectangular waveforms (parallel)
or a FANUC serial interface output encoder
(serial).
5 No 1-Vp-p output encoder can be connected to
additional units.