Additional UPS Features
26
Powerware
®
5119 Rack Mount User’s Guide
:
www.powerware.com
Pin Out
As shown in Table 2, Pins 1 and 2 operate in two modes: Basic Alarms
mode and Serial Data mode. Basic Alarms mode has AC fail alarm and
output shutdown. Serial Data mode is UPS Code II compliant.
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.
1
2 3
4 5
6
7 8 9
Figure 20. Communication Port
Table 2. Communication Port Configuration
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
