Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set User Manual

Page 690

Section 14A

System Start-Up

14A-2

Prior to pressing the “ON” button on the MTB panel:

Check all wiring connections, both electrical and fiber optic. Make

sure inter-module connections correspond to the system wiring

diagram covered starting on page 7A-1. Make sure grounding is

adequately wired as directed on page 4D-10. If absolute encoders are

used make sure the battery for absolute feedback is connected.

Check the external ac power supply. Make sure it will supply

115/230 V ac to the main power supply. Also test that the servo

amplifiers are receiving proper voltage. If an analog servo system is

being used refer to the manufactures documentation for amplifier

power requirements. If a digital servo system is being used, the 8520
servo amplifiers should be receiving 3

220-240 V ac, and the 1394

or 9/440 system should be receiving 3

380 or 460 V ac.

Turn “ON” the circuit that supplies the external ac power. Do not

push the power “ON” button on the MTB panel. Make sure the ac

POWER indicator located on the front top of the main power supply

is illuminated.

Make sure the E-Stop button is depressed.

Check the terminal block connections and the jumper settings of the

servo amplifier. For an analog system refer to drives documentation

provided by the manufacturer. For a digital system check against the

terminal block connection and jumper setting tables starting on page

13A-1 (for 8520 drives), 11A-1 (for 1394 drives),

or 5A-28 (for 9/440 CNCs).

Check the incoming ac for logic power to the servo amplifiers. For

an analog system refer to documentation provided by the drives

manufacturer. For a digital drive system, verify that the voltage listed

below is present at the following terminals of the servo amplifier

using a volt meter:

8520 Drives
TB1-4 to TB1-5

170 to 253 V ac

The 8520 digital servo amplifier circuit board contains a green

SYSTEM READY indicator light and a yellow BUS UNDER

VOLTAGE indicator light. Both of these indicators should be

illuminated. The SYSTEM READY indicator light indicates that

the servo amplifier is receiving logic power. The BUS UNDER
VOLTAGE indicator light indicates that 3

230 V ac motor power

is not present at the TB1 terminal block.