NORD Drivesystems BU0270 - Manual (Page 62)

Supplementary Manual EtherCAT for NORDAC SK 200E
62 Subject to technical amendments BU 0270 GB
General process data monitoring of a Technology Unit (SK xU4-…)
The parameter (P151) "Timeout external bus" generally monitors the existence of bus communication. If no
process data is received within the parameterised monitoring time (The content of the process data is
irrelevant) the subscriber assumes that the bus communication to this subscriber is generally faulty and reports
an error.
This error is also triggered if process data with an invalid control word (Bit 10 in control word = 0) is received.
This function is activated when the first valid process data telegram is received.
General monitoring of frequency inverter process data
SK 500E series frequency inverters offer the facility for monitoring the active bus interface by means of the
parameter (P513) "Telegram timeout". If the frequency inverter does not receive a telegram within the time
entered here, it assumes that there is a general fault with the bus communication and reports an error.
Note: With SK 200E series frequency inverters, the function of this parameter is implemented by parameter
(P120). Communication errors are therefore reported via the bus module. Parameterisation of (P513) is
therefore not necessary. (P513) should be left at the factory setting.
Option monitoring
With the parameter (P120) "Option monitoring", SK 200E series frequency inverters provide the facility for
monitoring connected technology units (SK xU4-…) with regard to their current functional status. Generally,
this function corresponds to monitoring via parameter (P513). This parameter (P513) should therefore be left
at the factory setting.
7.1.2 EMCY message
In case of faults with frequency inverters connected to the system, the bus module sends an error message
via Emergency Message (CoE) on the EtherCAT bus. The message is structured as follows.
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7
Error code Error
Index
FI-ID
0...3
Not used
Table 1 Structure of Emergency Message ( CoE )
FU ID = identifies the FI from which the error message has come FI 1 = 1, FI 2 = 2, etc.
The following error groups are defined in the communication profile DS-301. Because of the protocol (CoE)
which is used here, this profile also applies to the described EtherCAT modules.
Error Code (hex) Significance
00xx No error
10xx Undefined error type
20xx Current error
30xx Voltage error
40xx Temperature error
50xx Hardware error
60xx Software error
70xx Additional module
80xx Communication
90xx External
error
FF00 Specific to device
Error messages, which are generated by the frequency inverter, are forwarded from the SK TU4-ECT on the
field bus level in the form of an "EMCY message". They do not result in an error of the SK TU4-ECT.