NORD Drivesystems BU0260 - Manual (Page 76)

Supplementary Manual CANopen for NORDAC SK 20E
76 Subject to technical amendments BU 0260 GB
6 Error monitoring and error messages
6.1 Error monitoring
The majority of bus module and frequency inverter functions and operating data are continuously monitored
and simultaneously compared with limiting values. If a deviation is detected, the bus module or inverter reacts
with a warning or an error message.
For detailed information, please refer to the relevant main manual of the frequency inverter.
Errors cause the frequency inverters to switch off, in order to prevent a device fault.
The following options are available to reset an fault (acknowledge):
1. switching the mains off and on again,
2. by means of a correspondingly programmed digital input
(SK 200E: (P420) [-…], function {12} or
SK 500E: (P420 ... P425), function {12}),
3. by switching off the “enable” on the frequency inverter
(if no digital input is programmed for acknowledgement),
4. by bus acknowledgement or
5. by P506, the automatic error acknowledgement.
Visualisation of the inverter error codes is made via the frequency inverter (see relevant manual).
Errors which are attributable to bus operation are visualised via the bus module. The precise error message is
displayed in parameter P170.
NOTE
The display of a bus error is shown in the operating display of the SimpleBox SK CSX-3H by
means of the error group number E1000. In order to obtain the precise error number, the
module information parameter P170 must be selected. The current error is shown in Array
[01] of this parameter, the last error is stored in Array [02].
6.1.1 Error monitoring details
Monitoring of bus communication is divided into the following categories:
 EMERGENCY messages
The bus module sends a so-called "EMCY Message", if a connected frequency inverter becomes faulty.
According to the CANopen specification DS-301 and DS-402 this message contains a detailed error code
(see also 6.1.2 "EMCY message").
 Timeout monitoring
Communication problems are detected with the aid of timeout monitoring. Various versions of the timeout
monitoring can be selected, which either relate to general functionalities ("no bus communication") or to
specific modules ("failure of a participant").
These monitoring modules can be used in various combinations.