adept technology AdeptThree, User Manual

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41
DC Power
The Tower PCA provides limited DC power (500 mA max.) to drive User
end-of-arm hardware such as indicators, small motors, or other analog
devices. 12 VDC, -12 VDC, 12RTN, and FRAME ground are available.
Each of these is terminated at J12 (POW) on the Tower PCA. Refer to
Table 3-1 for pin assignments and Figure 3-11 for the connector's location.
These supplies are fused at 0.5 Amp by fuses F1 and F2 on the Tower
PCA.
CAUTION
Power lines are similar to User lines in that they are routed
in close proximity to the robot harness. In order to ensure
their long life, they are constructed of 26 AWG high-
strand-count wire and are not designed to carry high
current or voltage. To minimize coupling with robot
control signals in the harness, the User should minimize
power demand transients on these lines.
The ±12 V power supplies are fused by F1 and F2 on the
Tower PCA. In the event of unexpected power loss at J12,
turn off power to the controller and check F1 and F2 with
an Ohm meter; these fuses do not visually indicate an
open circuit. If a fuse requires replacement, DO NOT
SUBSTITUTE a fuse with a higher rating. Since the 12 Volt
supply is common throughout the controller, drawing too
much current at the Tower PCA may damage the robot
harness or cause controller problems.