Data Communications - Eaton Cutler-Hammer MP-3000 Manual

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Section 10. DATA COMMUNICATIONS
10.1 General
Most MP-3000 setpoints and operating data can be viewed or changed on the front-panel
alphanumeric display. However, with the large volume of information and setpoints, many users
will find it more convenient to view or manipulate the data on a host computer with its large
graphic display.
The MP-3000 can communicate with Cutler-Hammer PowerNet® and previous-generation
IMPACC® distributed control systems or host software via the communications port and an
optional accessory PONI module mounted on or near the back of the relay.
In addition to monitoring and programming, PowerNet can execute control through
communications; including remote tripping, resetting, and emergency override.
One particular logging function, the starting current profile display, cannot be viewed on the relay
faceplate. The profile data must be uploaded to a PowerNet host computer after the start.
PowerNet provides an informative plot of the actual starting current curve, plotted along with the
cold-start protection limit curve, for checking of coordination. Profiles are saved for the last four
starts.
Older IMPACC systems do not directly support the MP-3000. However, the MP-3000 can be set
to emulate the communications of the older Cutler-Hammer or Westinghouse IQ 1000 II motor
relay.
10.2 Choosing a PONI - The PONI (Product Operated Network Interface) module is
interchangeable among a number of available styles and provides the physical and electrical
interface to several communications links or networks. The MP-3000 can work with at least the
following PONI types:
• I-PONI - INCOM Network PONI - the recommended means of connecting to the robust
INCOM communications network.
• B-PONI - Buffered INCOM Network PONI - an older INCOM PONI type which can only be
used for communications in IQ 1000 II compatible mode. See Section 10.6 below.
• RS232-PONI - RS-232 serial port PONI - for connecting to the serial port of a PowerNet host
computer or other serial device.
• D-PONI - DeviceNet® PONI - a translating PONI for connection to a DeviceNet control
network. Check the firmware version of the D-PONI for compatibility with an IQ 1000 II or
an MP-3000.
• E-PONI - Ethernet PONI, with 10BaseT or optical-fiber network connections - for direct
connection to a facility LAN which ties the MP-3000 to a PowerNet host client computer.
Contact a Cutler-Hammer sales engineer or the Power Management Products factory for
updated information on availability of PONI types.
Each type of PONI has its own instruction leaflet, with information on mounting and connection.
10.3 Mounting the PONI - Attach the PONI to the back of the MP-3000 using the mounting
bracket supplied with the MP-3000. If the URTD module is to be mounted on the back of the
relay, mount the URTD module with its own bracket first; then attach the PONI to the back of the
I.L. 17562
PR 0.3 Effective 8/99