NORD Drivesystems BU0060 - Manual (Page 90)

CANopen – Supplementary manual options for NORD - Frequency Inverters
90 BU 0060 GB-4112
6. Operating status messages
Frequency inverters and technology units generate appropriate messages if they deviate from their
normal operating status. There is a differentiation between warning and error messages. If the
frequency inverter is in the status "Start disabled", the reason for this can also be displayed.
Frequency inverter start disabled
If the frequency inverter is in the status "Not Ready" or "Start Disabled", the reason for this is indicated
in the third array element of parameter (P700).
Display is only possible with the NORD CON software or the ParameterBox (SK PAR-3H).
Warning messages
Warning messages are generated as soon as a defined limit is reached. However this does not cause
the frequency inverter to switch off. These messages can be displayed via the array element [-02] in
parameter (P700) until either the reason for the warning is no longer present or the frequency inverter
has gone into a fault state with an error message.
Error messages
Errors cause the frequency inverters to switch off, in order to prevent a device fault.
The following options are available to reset a fault (acknowledge):
• Switching the mains off and on again,
• By an appropriately programmed digital input (P420 ... P425 / P470 = Function 12),
• By switching off the “enable” on the frequency inverter (if no digital input is programmed for
acknowledgement),
• By Bus acknowledgement or
• By P506, automatic error acknowledgement.
Device LEDs: As delivered (without the technology unit) 2 LEDs (green/red) are visible
externally. These indicate the actual device status.
The green LED indicates that the mains voltage is present and operational,
while a flashing code that increases in speed shows the degree of overload at
the frequency inverter output.
The red LED signals actual error by flashing with a frequency which
corresponds to the number code of the fault.
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6.1 Error monitoring
Various methods of error monitoring are available for the field bus level. Depending on the technology
which is used, this enables the status of modules and communication to be indicated with LED
displays, inverter parameters and field bus telegrams.
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