![ABB LD 800HSE Скачать руководство пользователя страница 117](http://html.mh-extra.com/html/abb/ld-800hse/ld-800hse_manual_2735117.webp)
Appendix C Technical Reference
Redundancy Behavior
3BDD011677-600 A
117
Redundancy Behavior
provides detailed information on the redundancy behavior. This may be
useful to get a correct understanding of what fault conditions can be covered and
how the system recovers from those fault conditions.
Table 18. Redundancy Behavior
Fault Condition
Fault Detection
Fault Treatment
Effect
Repair Measures
1
Primary Device fails
due to
•
permanent
hardware fault
•
transient
hardware fault
•
software fault
Device fails completely or
software watchdog expires or
hardware watchdog expires or
exception occurs or
failure in H1 interface
detected.
Primary role
actively
transferred to or
taken by
redundant device.
Redundancy
switch-over.
System
degrades to
non-redundant
system.
Transient fault:
Automatic reboot
Permanent fault:
Replace device
Secondary Device will
reboot and receive
configuration data from
Primary Device.
2
Ethernet cable broken
between Primary
Device and Ethernet
hub/switch.
Bad link status of Ethernet
port detected.
Detection time less than 500
ms.
Primary role
actively
transferred to
redundant device.
Redundancy
switch-over.
System
degrades to
non-redundant
system.
Repair or reconnect
Ethernet cable.
Secondary Device will
reboot and receive
configuration data from
Primary Device.
3
H1 cable broken
between Primary
Device and H1
network.
Empty live list detected on one
H1 port of Primary Device
while Secondary Device still
has non-empty live list. Due to
the H1 protocol it may take
some seconds until the live list
becomes empty. Detection
occurs only if in Primary
Device and Secondary Device
the number of active H1
devices in the live list has
exceeded the threshold of
one.
Primary role
actively
transferred to
redundant device,
so that access to
H1 is possible
again.
Redundancy
switch-over. No
redundancy
concerning the
affected H1
link.
Repair or reconnect H1
cable.
Содержание LD 800HSE
Страница 2: ......
Страница 3: ...Device Management FOUNDATION Fieldbus Linking Device LD 800HSE and LD 800HSE EX V3 6 0 0 ...
Страница 78: ...Built in Web Server Section 4 Linking Device Diagnostics 78 3BDD011677 600 A Figure 24 LD 800HSE Contact Page ...
Страница 94: ...Linking Device Web Server Diagnostics Section 4 Linking Device Diagnostics 94 3BDD011677 600 A ...
Страница 102: ...Device Redundancy Appendix B Limits and Performance Data 102 3BDD011677 600 A ...
Страница 124: ...Redundancy Behavior Appendix C Technical Reference 124 3BDD011677 600 A ...
Страница 135: ......