ETC CEM3, Руководство пользователя

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60 CEM3 User Manual
Appendix C
Redundant Tracking Systems
CEM3 features the ability to support dual redundant controllers in ESR24, ESR36 and ESR48 rack types,
as well as in the FDX3000 rack.
Redundant controllers provide extra security in the event of system failure, allowing a secondary
processor to immediately take control of the rack.
Redundant Tracking Switch
The redundant tracking switch determines which controller runs the output to the dimmers. It has
three positions.
• When the switch is set to A (upper position), the upper controller has control of the dimmers.
• When the switch is set to B (lower position), the lower controller has control of the dimmers.
• When the switch is set to Auto (center position), control is automatically allocated based on the
health of the system (see below for details).
Automatic Control
Typically, in a redundant tracking system, the switch should be left in the auto position. When the
switch is set to auto, the A processor will have control by default. Control will switch to B when any of
the following events occur.
Power
DMX A DMX A Network Panic
Reset
Test
About Back
Setup
Enter
Enter
thru
and
at def
mno
wxyz
jkl
abc
tuv
#nav
Last
A
Next
B
pqrs
ghi
Power DMX A DMX A Network Panic
Reset
Test
About Back
Setup
Enter
Enter
thru
and
at def
mno
wxyz
jkl
abc
tuv
#nav
Last
A
Next
B
pqrs
ghi
Redundant tracking in a Sensor ESR Rack
Redundant
Tracking Switch
Controller A
Controller B
Redundant
Tracking Switch
Controller A
Controller B
Redundant tracking in an FDX3000 Rack