Servo Amplifier - Replacement

Introduction

This procedure tells you how to remove a servo amplifier and install a smart servo amplifier.

If you replace a servo amplifier that was made before 2007, refer to PCB Auxiliary (AUX) Load - Replacement.

Document Applies to these Parts

93-32-5549 AMP, 90A BL SMART
93-32-5550J AMP, 30A BL SMART
93-32-5550N AMP, 30A BL SMART
93-32-3551J AMP, 45A BL SMART
93-32-3551N AMP, 45A BL SMART
93-32-5552G AMP, 60A BL SMART
93-4988 AMP, 60A BL SMART
93-4989 AMP, 90A BL SMART
93-5088 AMP, 30A DIGITAL AMP
93-5089 AMP, 45A DIGITAL AMP

NOTE: The Digital Amplifiers are fully backward compatible with BL Smart Amplifiers.

NOTE: Refer to the Servo Amplifier - Identification Guide for more information.

Electrical Safety

DANGER: Working with the electrical services required for CNC machines is extremely hazardous and can result in serious injury or death.

Before connecting line wires to the CNC:

Turn off all power to the machine at the source.
Perform a Lockout-Tagout (LOTO) procedure to ensure the power remains off during service.
Verify that power has been disconnected by using an AC voltage detector on all incoming lines.

If you are uncertain about how to safely disconnect power or perform LOTO procedures:

Do not proceed.
Contact qualified personnel or obtain appropriate assistance before continuing.

Failure to follow these precautions may result in electrical shock, equipment damage, or fatal injury.

Danger: Before beginning any work inside the control cabinet, verify that the High Voltage indicator light on the 320V Power Supply / Vector Drive has been off for a minimum of five (5) minutes. This waiting period ensures that residual voltage has dissipated and reduces the risk of electric shock.

Certain service procedures involve high-risk electrical components and may pose serious injury or fatality hazards. Technicians must not attempt any procedure unless they have a complete understanding of the steps involved and the associated risks.

If there is any uncertainty regarding a procedure, contact your Haas Factory Outlet (HFO) to arrange for a qualified service technician.

Replacement

1

Push [POWER OFF].

Set the main circuit breaker to the [OFF] position.

Lock the main circuit breaker. Use an approved lock with an approved safety tag.

Danger: If the voltage indicator light is on, do not touch the electrical components. The high voltage in the electrical cabinet can kill you. Wait for the voltage indicator LED to go off fully.

2

Disconnect the cables from the used servo amplifier. Remove the used servo amplifier.

Install the replacement smart servo amplifier [1].

Connect the current command [2] cable.

Connect the servo cables [3]. The cables are color-coded.

Connect the high-voltage jumpers [4] to the terminals on the adjacent servo amplifier.