NORD Drivesystems BU0260 - Manual (Page 77)

6 Error monitoring and error messages
BU 0260 GB Subject to technical amendments 77
General process data monitoring... Detailed monitoring of subscribers
… of a
technology
unit (TB)
… of a
frequency
inverter (FI)
Option
monitoring
Node / Life Guarding Heartbeat
relevant
parameters (P151) (P513) (P120) (P166 [-01]) x (P167) (P166[-02])
relate to... ... basic bus communication ... Bus nodes Bus node
... of the TO ... of the FI ... to the TB
Monitoring by TB FI FI Bus nodes Bus master
Example { 500 ms}
If no further
telegram is
recieved within
500ms after
receipt of a
telegram, an
error is
triggered.
{ 0.5 s }
If no further
telegram is
recieved within
0.5s after receipt
of a telegram, an
error is triggered.
{ 1 }
If the
communication
to a module is
interupted, or
the module
cannot be found
on switch-on, an
error message is
triggered.
{ 250 }x{ 3 }
If the subscriber does not
receive the expected
response within 250ms
of sending a data
package (telegram) or it
does not receive a
further data package
within 750ms (250 ms x
3) of receiving a data
package, an error is
triggered.
{ 250 }
The slave sends a
corresponding telegram
every 250 ms, which can
be processed by an
overriding control
system.
Error code E010 / E10.3 E010 / E10.2 E010 / E10.8
or E10.9
E010 / E10.2 /
General process data monitoring with a technology unit (SK xU4-…)
The parameter (P152) "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.
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, this function of this parameter is implemented by parameter
(P120). All settings (except { -0.1 }) are then without effect in parameter (P153).
Start
Order
Master
Slave
Response
Order
Response
Time
in ms
Node Guarding
max. (P166)
Life Guarding
max.
(P166) x (P167)
Comparison of Node Guarding / Life Guarding