Emerson AXIMA 2000, Installation Manual

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AXIMA 2000/4000 Installation Manual
Encoder Power Supply
The AXIMA 2000/4000 can be used to provide the 5 volt power source
for external encoders. Connections are provided on each axis I/O
connector. The current on the 5 volts must be limited to 250
milliamps per axis and the maximum current for 4 encoders must be
limited to 1 amp. Each 5 volt Encoder Supply has a 0.5 amp fuse in
series with the internal 5 volt logic supply, thus excessive currents
will blow the fuse.
Analog Outputs
AXIMA 2000/4000's analog command output to the servo amplifier
is a precision 16 bit output. These signals are susceptible to noise if
not properly shielded. For reliable operation it is important that
command cables be shielded and routed away from motor power or
other high voltage signals. Shields should be connected at the AXIMA
2000/4000 end. The input stage of the amplifier should be a
differential circuit. The output voltage is ±10 VDC, output current is
5 milliamps maximum.
Figure 23 Command Output
Drive Enable (Enable Contact)
Each axis has an Enable Relay Contact . The contact has a rating of
30 VDC and is capable of switching 0.5 amps for a resistive load. All
Enable relays are interlocked with the Watchdog relay as well as the
Enable Drives input. Each relay is also individually controlled by the
pre-defined Drive Enable output. See Figure 33, Watchdog, Drive
Enable Circuit, on page 41.
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