Installation; Application; E-Bypass Features And Functions - ABB ACH550 User Manual

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Installation

Study these installation instructions carefully before proceeding. Failure to observe
the warnings and instructions may cause a malfunction or personal hazard.
WARNING! Before you begin read "Safety" on page 1.
WARNING! When the ACH550 with E-Bypass is connected to the line power,
the Motor Terminals T1, T2, and T3 are live even if the motor is not running. Do
not make any connections when the ACH550 with E-Bypass is connected to
the line. Disconnect and lock out power to the drive before servicing the drive.
Failure to disconnect power may cause serious injury or death.

Application

This manual is a supplement to the ACH550-UH User's Manual and documents
E-Bypass configurations.

E-Bypass Features and Functions

The ACH550 with E-Bypass is an ACH550 AC adjustable frequency drive in an
integrated UL type 1 or UL type 12 package with a bypass motor starter. The
ACH550 with E-Bypass provides:
• Disconnect switch or circuit breaker with door mounted control lever. The lever
can be padlocked in the OFF position (padlock not supplied).
• Bypass starter.
• Motor overload protection.
• Local operator keypad with indicating lights.
• Provisions for external control connections.
• Optional drive service switch (drive input disconnect), the functional equivalent of
a three-contactor bypass arrangement.
Installation
E-Bypass Configurations for ACH550 Drives