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OPERATION OF MANUAL BYPASS SWITCH
Turn this switch to “BYPASS” before performing any maintenance on the UPS with the connected load supported. Connected equipment
will receive filtered AC mains power, but will not receive battery power in the event of a blackout.
SWITCHING UPS TO “BYPASS” MODE
• Turn the “ON/OFF” Switch OFF. (LCD will read "ON BYPASS.")
• Turn the “Manual Bypass” Switch clockwise from NORMAL to BYPASS.
• Turn the AC Input Circuit Breaker OFF.
SWITCHING UPS TO “NORMAL” MODE
• Turn the AC Input Circuit Breaker ON.
• Turn the “Manual Bypass” Switch counterclockwise from BYPASS back to NORMAL.
• Turn the “ON/OFF” Switch ON.
Operation (Special Conditions)
(continued)
Communications
RS-232 INTERFACE
This female DB9 port connects your UPS via an RS-232 cable to a workstation or server equipped with Tripp Lite software. The port uses
RS-232 communications to report UPS status and power conditions. Using this port, Tripp Lite software can monitor and manage network
power and automatically save open files and shut down equipment during a blackout. Contact Tripp Lite Customer Support at (773) 869-
1234 for information on available SNMP, network management and connectivity software and products.
RS-232 signals and operations include: load level, battery status, battery level, operation mode, AC input voltage, AC output voltage, AC
input frequency, temperature inside unit, set shut-down delay time, enable/disable alarm and remote shutdown.
Hardware:
Baud Rate: 2400 BPS
Data Length: 8 bits
Stop Bit: 1 bit
Parity: NONE
Pin assignment:
Pin 2: TXD (Transmit Data)
Pin 3: RXD (Receive Data)
Pin 5: GND (Signal Ground)