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Check the Power
Section 4 Troubleshooting
76
9ARD000015-600
Check the Power
•
Check trunk and drop current limits.
•
Check type (size and length) of cable bringing power into the trunk.
•
Measure the 24V supply at the middle and ends of the network.
•
Consider spot checking the power for noise with an oscilloscope.
•
The 24 VDC Network Power for DeviceNet Must be for the DeviceNet
network only.
Check the Wiring
•
Check lead dress in junction boxes.
•
Check that connectors are screwed together tightly.
•
Check that glands are screwed tightly.
•
Check for foreign material (electrical tape, RTV, etc.) in glands.
•
Check that nodes are not touching extremely hot or cold surfaces.
•
Check that cables are kept a few inches away from power wiring.
•
Check that cables are not draped on electric motors, relays, contactors or
solenoids.
•
Check that cables are not constrained so as to place excessive tension on
connectors.
•
Wiggle connectors to provoke intermittent failures.
Check the Scanner Configuration
•
Baud Rate.
•
Node Address.
Check the Nodes
•
Drop 24V supply, re-power and reset the scanner to initialize the network.
•
Examine the scanner display codes to identify problem nodes.
Содержание AC 800M
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Страница 3: ...AC 800M EtherNet IP DeviceNet Installation System Version 6 0 ...
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Страница 74: ...Power Supply Options Section 3 Installation 74 9ARD000015 600 ...
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