Manual

6-3

6.2. External Shutdown

2 pairs of terminals CNR 16 are provided for external shutdown. 10mA is needed

for turning the internal photo-coupler on. User can use this terminal to shutdown

the UPS when emergent condition happens such

fire,

short circuit etc.

6.3. DB9 Connection

Four RS-485

and one

RS-232 are provided to communicate with more

sophisticated (option) modules.

Generally, RS-485 is for long distance

transmission and

RS-232

for

short distance within 10 meters. The followings are

only some connection examples of optional modules. The connection could be

changed or re-arranged according to transmission requirement in the field.

CNR21 (RS-232) UPSCOM- Software for PC Monitoring、SNMP Card

CNR9 (RS-485) DCMAN- Battery Monitoring Module

CNR10 (RS-485)

UPSCAN- Remote Control Panel

CNR12, 13, 14, 15, 17, 18, 19 (RS-485)

UPSCALL- Auto Dialing Module

CNR11

for transferring RS-485 into RS-232