Power Supply Modules - GE VersaMax GFK-2721A Manual

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Power Supply Modules

The PROFINET Scanner can accommodate either one power supply or two redundant power
supplies. If only one power supply is used, it can be installed in either location on the module.
Each power supply location that is used should be included in the configuration. Configured
power supplies will alarm if they are not providing proper voltage. Be sure the installed power
supply matches the configuration.
If two power supplies are installed, they serve as redundant backups for each other. A mix of
AC and DC supplies is supported, but both should be isolated or both non-isolated. Either one
of the power supplies must be capable of supplying all the power required by the node. The two
supplies do not share the load cooperatively.
For PROFINET Scanners included in an RX3i PROFINET Controller configuration, Proficy
Machine Edition automatically calculates whether the power supply or supplies in the
configuration are capable of providing all the power that might be needed by the modules in the
remote node. However, if the remote node is configured by a third-party IO-Controller, this error
checking is not available.
Note: For redundancy applications (MRP and Hot Standby CPU redundancy), it is
recommended that each VersaMax PNS be installed and configured with dual
power supplies.
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VersaMax PROFINET Scanner Manual – December 2013
GFK-2721A