G&L MMC-A2, Руководство по оборудованию

Страница: 75 / 192

Standalone MMC Control
G & L Motion Control Inc. MMC Hardware Manual 67
4.7.1.3 Axis I/O Port Analog Output
The Axis I/O Port provides a +/-10 V differential
Analog Output. The Analog Output is typically
connected to the drive Command Input. Only shielded
twisted pair wire should be used to make the connection
between the analog output and the drive as shown in
Figure 4-12 .
The CPU sends the analog output section a 16-bit digital
word to each analog output channel. Each digital word
is converted to a corresponding voltage within the range
of ±10 Vdc. The voltage is buffered and brought out to
a pair of I/O connections as a differential type voltage
output. This output is less subject to interference from
electrical noise than a single-ended output would be.
You can adjust each analog output channel in software
for offset adjustments, gain scaling, and unipolar
outputs.
For safety reasons, all outputs are automatically reset to
0 Vdc when a scan loss condition occurs.
Figure 4-12: Axis Port D/A Output
4.7.1.4 Axis I/O Port Encoder Input
The Axis I/O Port provides an input for a differential
incremental encoder. The encoder output signals from
the drive should be connected to the Axis I/O Port
DA+
DA-
8
9
MMC Axis Connector Drive
Shielded
Twisted
Pair