NORD Drivesystems BU0020 - Manual (Page 89)

8 Operating status messages
BU 0020 GB-2612 89
8.1 Table of possible error messages
The following list shows the possible error messages specific to Profibus.
Display
in the ControlBox Fault
Text in the ParameterBox
Cause

Remedy
Group Details in
P700 / P701
E010 10.0 Bus Timeout Telegram timeout, data transfer is faulty. Check P513.

Check external Bus connection.

Check bus protocol program process.

Check Bus Master.
10.2 Bus Timeout Option Telegram timeout for external bus module, telegram
communication is faulty.

Check external connection.

Check bus protocol program process.

Check Bus Master.
10.4 Init error Option External bus module initialisation failure

Check P746.

Bus module not correctly plugged in.

Check Bus module current supply.
10.1
System error option
External Bus module system failure
For further details see Section 8.2.
10.3
10.5
10.6
10.7
10.8 Option error External module communication failure

Connection fault / error in the external component
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8.2 Error monitoring
The PROFIBUS module monitors the following functions:
• Connection to master: error, e.g. due to disconnection of the bus cable.
• Baud rate detection
• Reception of process data from PROFIBUS:
Following receipt of a valid telegram, the next one must arrive within the period set in the
inverter parameter "USS Time Out".
• Reception of process data from inverter: on interruption of the connection to the
frequency inverter, an error message is entered in the extended diagnosis of the
PROFIBUS telegram (2 bytes: 0x02 0x04).
In parameter P746, the status of the PROFIBUS module can be read. With a customer unit (only SK
300E and SK 700E/750E) this can be performed with a technology unit or a ControlBox. If a
technology unit is used, the parameter must be read out with an additional BUS module with a USS or
CAN interface. However, 2 LEDs are still available for diagnosis with the technology unit (see below).
Parameter P746 is a subindex parameter: The status of the PROFIBUS technology unit is in Subindex
0, the status of the PROFIBUS customer unit is in Subindex 1.
The parameter contains binary coded information which is displayed in hexadecimal: