Additional UPS Features
24
Powerware
®
5105 User’s Guide S 05146193 A Uncontrolled Copy
The system always starts in Basic Alarms mode. When serial data is
received at Pin 1, the function of Pin 1 and Pin 2 changes to Serial Data
mode.
If serial data has not been received before going to battery power, serial
communication is disabled until AC input power returns.
3
87
9
1
6
245
Figure 14. Communication Port
Table 2. Communication Port Pin Assignment
Pin Signal Type Function
1
Basic Alarms Mode - Input: RS-232 level high (+12V) pulse
4 to 5 seconds
Remote UPS off. In absence of AC power, output is
turned off until normal AC power returns
Serial Data Mode - Input: RS-232 data RS-232 serial communication input. 1200 baud,
8 bits, No parity, 1 stop bit, 1 start bit
2
Basic Alarms Mode - Output: RS-232 level high (+12V) AC Input failure
Serial Data Mode - Output: RS-232 data RS-232 serial communication output. 1200 baud,
8 bits, No parity, 1 stop bit, 1 start bit
3 Output: Open collector transistor ON, 50 mA, 40 Vdc rating AC Input failure
4 Signal Common Signal Common
5 Output: Open collector transistor ON, 50 mA, 40 Vdc rating Impending low battery
6 Input: RS-232 RTS Plug and Play software enable trigger (activates
when pin changes from +12V to -12V)
7 Input: Relay contact or RS-232 level Remote Emergency Power-Off: UPS total output can
be kept off with low signal or closing relay contact
8 Output: 8 to 25 Vdc, 5W constant power (0.63A max. @ 8V) Auxiliary Control Power
9 Chassis Connection to chassis