Power Failure Protection - Samsung DVM PLUS III Technical Data Book

05-3_control systems(082~141)
(9) Maximum number of interface
No
1 Upper-layer device
2 Centralized controller
3 Interface module
4 SiM
5 Watt-hour meter
6 Indoor unit

Power failure protection

Even during a power failure, all important configuration and calculation data are stored in the non-volatile
memory.
Time setting is sustained during a power failure of 2 days with the help of the backup battery and reset after
2 days are elapsed.
(10) Wiring distance
Distance DMS and centralized controllers
Distance cannot exceed 1000 meter from the DMS to the end of the centralized controller.
c + d + e < 1000 meters
=
Direct distance between DMS and hub/repeater (no use of switch technology)
Since DMS supports 10 Base-T Ethernet connection, direct distance from the DMS to the first repeater or upper-layer
device cannot exceed 100 meters (IEEE 802.3). The number of cascaded hub/repeaters in the network diameter
cannot exceed maximum 4 to extend communication length.
That is, the network diameter cannot exceed 500 meters.
Maximum length of each node a , b, c, d and e = 100 meters
3/6/08 14:04 Page 91
Device
Unlimited
16
16
(for one centralized controller)
8
64
256
a
The distance is called the network diameter.
a b
Repeater
Maximum number of repeater = 4
Maximum
S-NET3, S-NET i, S-NET mini, Web-Client
MCM-A202A
MIM-B04A, MIM-B13A
MIM-B12
8 watt-hour meters for one SiM
In case of exceeding 256 indoor units, DMS
ignores them after initial tracking process.
b c
c d
Model
d
e
e
V-91