GE 1000-1500-2000-3000 VA User Manual

 

 

 

 

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The RS-232 communication port provides the following functions: 

 
1 - Monitoring charger status 
2 - Monitoring battery status and condition 

3 - Monitoring inverter status 
4 - Monitoring UPS status 
5 - Monitoring the AC utility power status 

6 - Turn on/off UPS on schedule for power saving  
7 - Adjust transfer voltage 
 

Pin Assignment: 
Pin 2 

:  PC receives line RS-232 data from UPS. 

Pin 3 

:  PC transmits line RS-232 data to UPS. 

Pin 5  

:  Signal ground. 

Pin 4,6,7 

:  Reserved for plug and play function. 

 

The UPS data is provided at 2400 bps baud rate and made up of 8 -bit, 1 stop-bit and no parity 
bit. All information is encoded in ASCII format. 
Hardware: 

Baud rate  

2400 bps 

Data length 

8 bits 

Stop bit 

1 bit 

Parity 

none  

 

Standard sub-D 9 cable (UPS side: male, PC side: female) 

 
 

 

Its major functions are some or all of the following: 
 
1 - to broadcast a warning when the AC utility power fails. 

2 - to save open files before the battery is exhausted. 
3 - to turn off the UPS via computer(s). 
 

Pin Assignment: 
Pin 1 

:  Normally open. When the battery voltage level is low, pin 1 and pin 5 are 

connected together via a photo coupler. 

Pin 3 

:  UPS will shut down when a high level (5~12V) is applied for at least 3.8 seconds. 

Pin 5 

:  Signal ground. 

Pin 6,7  :  Reserved. 

Pin 8 

:  Normally open. When the AC utility fails, pin 8 and pin 5 are connected together via 

a photo coupler. 

Cabling: 
A special cable must be used with a pin assignment as follows: 
 

 

Pin 1 ----------------------- Pin 1 (Battery Low) 

 

Pin 3 ----------------------- Pin 5 (GND) 

 

Pin 4 ----------------------- Pin 3 (Shutdown) 

 

Pin 7 ----------------------- Pin 6  

 

Pin 7 ----------------------- Pin 7  

 

Pin 8 ----------------------- Pin 8 (AC Fail)