APC MXA002 Datasheet download pdf (Page 29)

4.0 Installation

4.11 Emergency Power Off (EPO) interface

The UPS may be switched off by a remotely operated Emergency Power Off control.

Such a configuration is common in computer rooms and laboratories where, for safety

reasons, power to the loads must be disconnected. The EPO interface is a six-position

modular jack with an offset latch. Connection to a remotely located EPO switch may

be accomplished as shown below.

Caution: The EPO interface is a Safety Extra Low Voltage (SELV) circuit and may be

connected only to other SELV circuits.

Attention: L'interface de mise hors tension d'urgence est un circuit de sécurité à très

basse tension qui ne peut être connecté qu'à d'autres circuits de sécurité à très basse

tension.

Beachte: Die Schnittstelle für die Notabschaltung ist eine Schutzkleinspannungs-

Schaltung (SELV = safety extra low voltage circuit) und darf nur an andere

Kleinspannungs-Schaltungen angeschlossen werden.

Precaución: La interfaz de Parada de Emergencia es un circuito de seguridad de

extra bajo voltaje, y puede conectarse únicamente a otros circuitos de seguridad de

extra bajo voltaje.

Caution: The EPO interface is designed to monitor circuits that have no determined

voltage potential. Such "closure circuits may be provided by a switch or relay properly

isolated from the mains. Connection of the EPO interface to any circuit other than a

closure type circuit may cause damage to the Electronics Unit.

pin 6

offset latch

jack

offset latch plug

Amp p/n 555237 (flat cable)

Amp p/n 555238 (round cable)

or equivalent

pin 1

1, 2, 3, 4 or 6

Normally Open

EPO Switch

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 59 60

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APC MXA002 Datasheet Page 29