11-5
CONTROL SYSTEM
SM YAZDCI 1-A.1 GB
The following combinations show the allowed and not allowed capacity group:
ODU Model
Communication channel
Is it allowed capacity group?
Indoor Capacity
0
1
2
3
4
P (DCI80)
Single
No
No
No
No
Yes
Multi
Com Channel 1
Yes
Yes
No
Yes
No
Com Channel 2
Yes
Yes
No
Yes
No
Com Channel 3
Yes
Yes
No
Yes
No
Com Channel 4
Yes
Yes
No
Yes
No
Notes
The outdoor will keep establishing normal communication with the indoor or DMSMP.
1.
The outdoor will show diagnostics normally.
2.
The SB LED will keep ON as long as the power is on.
3.
Once
4.
the unit is forced to Idle due to either of the above, it will keep checking the above
items, until the system is recovered.
11.3.2
Communication with Indoor Units
11.3.2.1
Communication Failures Definition
Two types of communication failures are diagnosed. The communication failures are checked
separately for each IDU channel.
11.3.2.1.1 ‘Bad Communication’ fault
The system keeps a balance of a good/bad communication packet ratio for each active
communication channel. When the ratio getting high , system enters ‘Bad Communication’
fault.
11.3.2.1.2 ‘No Communication’ fault
If no legal transmission or no message received for 30 seconds, system enters ‘No
Communication’ fault.
When in ‘No Communication’ fault, the system will act as following:
If there is no communication in
all channels, the following will be performed:
The
1.
unit changes to SB.
The
2.
system will scan all the communication.
Each
3.
channel that is identified as ‘no communication’ channel will be referred as
STBY unit.
The
4.
unit resumes its normal operation with only the operative channels.
