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5.8 Trouble/alarm monitoring
The trouble/alarm that can be monitored with LM
ADAPTER can mainly be classified as follows.
(Note: It differs depending on the types of LM ADAPTER)
①
Trouble of equipment such as air conditioners and
remote controllers
②
Network fault of M-NET
③
Alarm due to improper air conditioning
④
Trouble of LM ADAPTER
⑤
Fault of LON network
5.8.1 Trouble/alarm monitoring by network variables
(1) Trouble and alarm of air conditioner - - -
①
,
③
Air conditioning equipment in trouble will be informed to the BMS by the network variables via LM ADAPTER.
In case when the local remote controller or system controller is installed, the detail of the trouble will be
displayed.
Detecting method of trouble
- Trouble of indoor unit : Error output from individual indoor unit
- Trouble of outdoor unit : Error output from all indoor units within a same refrigerant system
(2) Communication fault of M-NET (including power failure) - - -
②
When the communication (M-NET) between LM ADAPTER and air conditioner is disabled, LM ADAPTER
monitors the communication with the air conditioner for a certain time, and informs you about a
communication error if abnormality is detected.
Detecting method of M-NET communication error
- Network variables (collective for all indoor units) exclusive for communication error
- Response to Polling (by “Effective PollFetch
【
nciPollFetch
】
”)
Section in trouble
Symptom
Monitoring method
Relating nci
①③
Air conditioning equipment
Trouble of relating equipment such as air
conditioner/remote controller
1) Network variable (Error)
1) None
②
M-NET communication
Unable to communicate between
LM ADAPTER and objective equipment
for control
1) Network variable (Error)
2) Presence of Poll response
1) None
2) nciPollFetch
(Effective PollFetch)
④
LM-AP
Trouble of LM ADAPTER itself
1) Node object
2) Presence of response
(including Ack)
1) & 2) nciSet_1
(Communication
Timing)
⑤
LON communication
Unable to perform the communication of
LONWORKS network
1) Node object
2) Presence of response
(including Ack)
1) & 2) nciSet_1
(Communication
Timing)
OC
IC
IC
IC
MA
LMAP
BMS
①、③
②
④
⑤
M-NET centralized control
system transmiss ion line
M-NET indoor-outdoor
transmiss ion line
LONWORKS network