ABB EQmatic - Troubleshooting

ABB EQmatic
Planning and application
QA/S x.yy.1 | 2CDC512090D0202 99
Troubleshooting
Update
If the device does not start properly and access to the user interface is not possible after a firmware
update, the device will start with the previously installed firmware version. This process can take
several minutes. The green LED flashes during this time. The device is ready for operation when the
green LED is permanently ON.
Device access
Proceed as follows if the user interface is no longer accessible:
1. Check the connections, cables and network connection, etc.
2. Start the i-bus
®
Tool and scan the network for IP devices. Select the related device and click
"Open website". The Login page opens. Enter your access data.
3. If the device is not listed in the i-bus
®
Tool after a network scan, undertake a restart including
resetting the network settings (for further information see: 2.5.2 Resetting the device P. 20)
4. Repeat step (2.). A new IP address may be assigned via DHCP.
M-Bus
Problem Possible means of rectification
No M-Bus devices or several M-Bus
devices do not respond
• Short circuit on the M-Bus?
• Cable not connected correctly or cable severed?
• Energy Analyzer ready for operation, mains voltage (230 V) available?
• The voltage at the M-Bus terminals is at least 24 V?
• Identical speeds (300, 2400, 9600) on the Energy Analyzer and M-Bus
devices?
One M-Bus device
does not respond
• Bus address not assigned
• Bus address incorrect
• M-Bus device not connected
• M-Bus cable severed
• Check M-Bus address of the device
• Measured voltage at the device is at least 24 V?
• Identical speeds (300, 2400, 9600) on the Energy Analyzer and M-Bus
devices?
Electrical ambient conditions
• The voltage measured at the most distant M-Bus device must be at least
24 V or more
• If the voltage is less than 24 V, it might not be possible to read all M-Bus
devices
• The maximum output voltage of 42 V must not be exceeded