Communication Errors Between Spa-Zc 302 And Spa Slave - ABB SPA-ZC 302 Installation And Commissioning Manual

SPA-ZC 302
8.4.2.
66
Profibus-DPV1/SPA Gateway
Installation and Commissioning Manual
Checksum errors
Timeout occurrences
Off-line occurrences
On-line occurrences
Events received
Event lost occurrences
Event buffer overflows Number of times the event buffer has overflowed. The
Poll cycle time

Communication errors between SPA-ZC 302 and SPA slave

If there are indications of communication errors between SPA-ZC 302 and the SPA
slave, you can try to change the "SPA Reply Timeout", "SPA Idle Time" and "SPA
Com Retry Count" parameters. The default parameters should work without any
problems with most of the SPA slave devices. If you notice SPA communication
failures when checking the Diagnostic dialog of PCT, then following guidelines
should be followed when changing the parameters:
• Usually, the SPA communication errors are caused by the hardware. Therefore,
start by checking all cabling and hardware settings of the SPA slave and SPA-ZC
302 device. If several slaves are connected, check the SPA loop and that the
connected converters are set correctly.
• If hardware setting or cabling errors are not found, try to increase "SPA Reply
Timeout" and "SPA Idle Time" into their maximum values.
• If the communication is now working properly:
• Search for the minimum value for the "SPA Idle Time". A value below default
value is not recommended.
• When the minimum value for the "SPA Idle Time" is found, you can repeat the
same process for the SPA Reply Timeout. A value below default value is not
recommended.
• If the communication is still not working, try to increase the "SPA Com Retry
Count". This might be an indication of a hardware error in the cable or in the
devices. Contact your ABB representative.
Number of checksum errors detected
Number of timeout occurrences. The timeout occurrences
counter is increased when the SPA slave does not answer
to the gateway in the time specified in "SPA reply
timeout". If you notice this error, try to increase the SPA
reply timeout.
Number of times communication between the SPA slave
and the gateway has been lost
Number of times communication between the SPA slave
and the gateway has been established
Number of events received
Number of event lost occurrences. The event lost counter
is increased when the protection relay reports that it has
lost events for example due to a reset.
event buffer overflow counter is increased when the
protection relay reports that an event buffer overflow has
occurred. If this occurs often, check the protection relays
event mask settings first, and if no errors can be found
there, try to decrease the global poll interval setting, see
Section 5.4.7.1. SPA configuration.
Time span in which the polled SPA parameters are
updated.
1MRS755014