Monitoring and diagnosis on the inverter
Operation manual
ID 441896.05
WE KEEP THINGS MOVING
47
10
10 Monitoring and diagnosis on the inverter
If the connection between inverter and master is interrupted while the drive is
running (e.g., due to disconnection of an EtherCAT cable or a faulty master
shutdown), the drive must not be allowed to continue moving with the last
received reference values. To be able to react to such a connection failure,
activate the EtherCAT PDO timeout function. The watchdog function of the
inverter checks whether EtherCAT telegrams arrive within a specified time.
You can choose between a STÖBER watchdog and an EtherCAT watchdog.
Make your selection in parameter A258.
Before a newly set value can take effect this setting must first be non-volatilely
saved with A00 save values and the inverter then turned off and on.
When the connection is unintentionally interrupted for the set time the invert
changes to the state "fault." When this happens the drive stops, the Relay 1 opens
and the fault 52:communication appears on the display with the cause
6:EtherCAT PDO.
The fault can only be exited by an acknowledgment either with the hardware
enable, the "ESC" key, or via the "additional enable" bit via EtherCAT (see inverter
documentation).
Function Value in A258
inactive 0 or 65535
STÖBER watchdog 1 to 99: the timeout time is always 100 milliseconds
100 bis 65533: The number value is the timeout value in
milliseconds.
EtherCAT watchdog 65534: This value is not used for monitoring. Instead the
"SM Watchdog" function is set by the EtherCAT master
(e.g., TwinCAT
®
, see 11.6 Activation of the
synchronization with TwinCAT®).
Information
Please note that you will only need the STÖBER watchdog function if
your controller does not have a watchdog function.
If your controller does have a watchdog function, STÖBER
ANTRIEBSTECHNIK recommends that you use the setting A258 =
65534 (EtherCAT watchdog).
Information
Monitoring is only active in the "operational" state. It is not tripped when
the EtherCAT "operational" state is purposely exited.
When a fault is triggered, the state machine changes to the state "safe
operational."
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