Eaton PDI JCOMM, Installation And Operation Manual

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Eaton PDI JCOMM Enclosure Installation and Operation Manual P-164001107—Rev 01 27
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The following troubleshooting tips cover the most common installation and setup problems.
If problems continue after performing the following checks, contact Eaton Service, see paragraph
2.7 Getting Help .
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The most common JCOMM and BCMS installation and setup problems are communications problems.
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• Verify that ModBus connectors have the correct pin-out. (See paragraph 5.1 Modbus Network Setup )
• 4-wire Modbus is the default network configuration. If using 2-wire Modbus, check that Modbus
connectors on the Connections Panel are jumpered TX+ to RX+ and TX- to RX-. (See paragraph
5.1 Modbus Network Setup )
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Modbus addresses can only be set using BCMSII setup software. Modbus addresses are not stored in the
points lists.
Verify that the Modbus addresses have been setup correctly in the BCMS board:
• If a JCOMM WaveStar Color Monitor is installed as a local power monitoring station:
– Check the monitor’s front panel to verify that there are no communication errors present.
– Verify that each panelboard can be displayed on the monitor.
– Access the monitor setup page by accessing the setup pressing the ESC key and verify that the
upstream addresses of the monitor are set correctly:
○
The WaveStar Color Monitor remaps its downstream devices to upstream addresses that can be
accessed by the BMS. The number of devices monitored by the monitor is shown on its setup
page.
○
For example, if the WaveStar display monitors four panelboards in a JCOMM and the panelboard
addresses are 1, 2, 3, and 4. If the monitor’s address is 20, it will respond to addresses 21, 22, 23,
24 for panelboard addresses, when addressed by the BMS. (See paragraph
5.5 Remapping Modbus Addresses with Monitors )
• Verify that the BMS is addressing the correct addresses. A very common problem is that the BMS
addresses the
downstream addresses that were established in setup when a monitor or WaveStar BCMS
Hub is present. The BMS should be addressing the addresses upstream of the monitor or Hub, as they
have been remapped. (See paragraph 5.4 Modbus Addressing with Monitor Installed )
• If the display does not resume communication with the BMS, verify that its upstream cable is undamaged
and that communication wires are correctly connected.
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• Check the LED’s on the BCMS board. LEDs should be blinking when the BCMS board has 24VDC power.
• If power LEDs are not blinking, check the connections from the 24VDC power supply (on the right side
Power Panel) through the terminal blocks to the BCMS board. (See
Figure 5 )