Regen Assembly - Replacement

Applies to machines built from: 
July, 1993
AD0279 Rev C

Electrical Cabinet - Regen Assembly - Replacement - Introduction

This procedure tells you how to replace the regen assembly.

Safety Notes
Caution: When you do maintenance or repair on CNC machines and their components, you must always follow basic safety precautions. This decreases the risk of injury and mechanical damage.

Do these steps before you do work in the machine or in the control cabinet:
  • Set the main circuit breaker to the OFF position.
  • Use an approved lock with an approved safety tag. Always follow lock-out procedures in accordance to local government rules.
  • After turning off the machine, wait at least 5 minutes before working in the control cabinet, to allow power to dissipate. Wait for the voltage indicator LED on the vector drive to go off completely.
  • Always turn off the main air supply when you work on any part of the pneumatic system.
  • Make sure to rest the spindle head on a block of wood when work is done on a vertical axis. This will prevent any unintended movement that could result in the axis falling.
  • Never alter any safety circuits on the machine.
You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes. Serious damage to the machine components can result in costly repairs. The service technicians at your Haas Factory Outlet (HFO) have the training and experience, and are certified to do these tasks safely and correctly. The repair and service work performed by your HFO is protected with a limited warranty.
danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not fully understand. If you have any doubts about doing a procedure contact your Haas Factory Outlet (HFO) and schedule a service visit.

Prerequisites

Available Kits:

Kit Part Number Description Kit Part Number Description
93-32-0041B REGEN, 11 OHM 2 COIL RESISTORS 93-32-0042A REGEN, 5.6 OHM 4 COIL RESISTORS
93-32-0043A REGEN, 7.5 OHM 3 COIL RESISTORS 93-32-0194 REGEN, 5.6 OHM (60HP VECTOR DRIVE)
93-32-5017 REGEN, 22 OHM (OM-1A/2A) 93-1030 REGEN, 20 OHMS 3 CERAMIC RESISTORS
93-1038F REGEN, 6 OHMS 6 CERAMIC RESISTORS 93-1040 REGEN, 15 OHMS 5 CERAMIC RESISTORS
93-1042G REGEN, 8.6 OHMS 6 CERAMIC RESISTORS

Electrical Cabinet - Regen Assembly - Replacement

Step 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.

Step 2

Disconnect the regen cable [1] from terminals 1 and 2 on the vector/spindle drive. If the regen assembly has ceramic resistors, disconnect the fan and thermostat cables.

note: Not all regen assemblies have a fan.

Remove the used regen assembly that has coil resistors [2], or that has ceramic resistors [3], from the top of the electrical cabinet.

Step 3

Put the grommet [2] on the cable for the replacement regen assembly [1] through the hole at the top of the electrical cabinet.

Install the regen assembly.

Connect the cable to terminals 1 and 2 [3] on the vector/spindle drive. If the regen assembly has ceramic resistors, make these connections:

  • fan cable to 92-91 on TB1 on the servo-distribution PCB
    note: Not all regen assemblies have a fan.
  • thermostat cable to 830/P20 on the I/O PCB

Put the cable inside the cable carrier.

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.

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