Operation Manual
Table Of Contents
- General Information
- Important Safety Messages
- Product Handling Guidelines
- Safety and General Information
- FCC Warning
- Product Description
- Specifications
- Battery
- *Contact APC by Schneider Electric Worldwide Customer Support to determine the age of the installed battery modules.
- Product Overview
- Installation
- Operation
- Connect Equipment to the UPS
- Display Panel
- Configuration
- UPS Settings
- Emergency Power Off
- Troubleshooting
- Transport
- Service
- Limited Factory Warranty
Smart-UPS 750-3000 VA 100/120/208/230 Vac Rack-Mount14
Emergency Power Off
EPO Overview
The Emergency Power Off (EPO) option is a feature that will immediately disconnect all connected equipment
from utility power. The UPS will immediately shut down and will not switch to battery power.
The UPS should be manually restarted to reapply power to connected equipment. Press
ON/OFF on the front panel
of the unit.
Normally open contacts
1. If the EPO switch or relay contacts are normally open, insert the wires
from the switch or contacts at pins 1 and 2 of the EPO terminal block.
Use 16-28 AWG wire.
2. Secure the wires by tightening the screws.
If the contacts are closed, the UPS will turn OFF and power will be removed from the load.
Normally closed contacts
1. If the EPO switch or relay contacts are normally closed, insert the wires
from the switch or contacts at pins 2 and 3 of the EPO terminal block.
Use 16-28 AWG wire.
2. Insert a wire jumper between pins 1 and 2. Secure the wires by
tightening the three screws at positions 1, 2, and 3.
If the contacts are opened, the UPS will turn OFF and power will be removed from the load.
Note: The power for operating the EPO circuit is sourced from pin 1. This is an isolated 24 V which can source
only a few milliamperes.
If the normally closed (NC) EPO configuration is used, the EPO switch or relay should be rated for dry circuit
applications, the rating should be for low voltage and low current applications. This normally implies the contacts
are gold plated.
The EPO interface is a Safety Extra Low Voltage (SELV) circuit. Connect the EPO interface only to other SELV
circuits. The EPO interface monitors circuits that have no determined voltage potential. SELV circuits are
controlled by a switch or relay properly isolated from utility power. To avoid damage to the UPS, do not connect
the EPO interface to any circuit other than a SELV circuit.
Use one of the following cable types to connect the UPS to the EPO switch.
• CL2: Class 2 cable for general use.
• CL2P: Plenum cable for use in ducts, plenums, and other spaces used for environmental air.
CAUTION
RISK OF ELECTRIC SHOCK
• Adhere to all local and national electrical codes.
• Wiring must be performed by qualified electrician.
• Always connect the UPS to a grounded outlet.
Failure to follow these instructions could result in minor or moderate injury.