Instruction Manual



4. Verify that the communication bus ribbon cable is in good condition and is properly

connected to both the MAIN UNIt and the AXIS UNIT.

5. ensure that the ISA Main and Axis Units are not located near any strong electrical or

magnetic fields.

6. Verify that the input power specifications (200~230 VAC +/- 10%, 50/60 Hz) are met for

both the Axis Unit (3-phase) and the ISA Main Unit (single phase).

7. Verify that all power cables are in good condition and are properly connected.

8. If the problem still exists, replace the affected AXIS UNit. (Refer to Section 8.3.3)

9. If the problem persists, replace the entire ISA Main Unit. (Refer to Section 8.3.1)

WARNING:

DO NOT CONNECT OR DISCONNECT CABLES OR OTHER SYSTEM

COMPONENTS WITH POWER APPLIED.

9.4.5 ENCODER ANGLE PULSE ABN. (axis Unit display codes "A5, d0, d2,

d7")

an ANGLE signal is not being received while the motor is supposed to be turning. When this

error message is displayed on the CRT, the affected Axis Unit display should be checked for

an Abnormal code. Refer to Section 9.6 for more information regarding this failure type.

1. Check the SET PARAMETER screens and verify that the settings do not result in a Duty

Cycle higher than 50%, and that the resultant cycle time is not less than 12 seconds.

2. Check the connected Axis Unit(s) for indications of abnormality. A locked-up display, an

illuminated Abnormal LED, and failure to count down are all possible indicators of a

malfunctioning Axis Unit. If all Axis Units appear to be functional, the problem is likely to

be found in another System component.

3. If all spindles are affected, then verify that the ISA Main and Axis Units are not located

near any strong electrical or magnetic fields.

4. Ensure that all power cables are in good condition and are properly connected.

5. if the problem affects only a single spindle, perform an encoder test procedure as provided

in Section 8.2.2.

6. If the encoder test identifies a problem, exchange the homerun cables, the tool, and/or the

Axis Unit until the cause of the problem is identified. If the encoder test results are

satisfactory, then verify that the input power specifications (200~230 VAC +/- 10%, 50/60

Hz) are met for both the Axis Unit (3-phase) and the ISA Main Unit (single phase).

7. If the problem still exists, replace the affected AXIS UNit. (Refer to Section 8.3.3)

8. If the problem still persists, replace the affected tool. (Refer to Section 8.3.4)

9.4.6 MOTOR OVER TEMPERATURE ABNORMAL (axis Unit display code

"d4")

The mOtor temperature is too high, and must cool down before it can be re-started.

1. Check the SET PARAMETER screens and verify that the settings do not result in a Duty

Cycle higher than 50%, and that the resultant cycle time is not less than 12 seconds.

2. Check the connected Axis Unit(s) for indications of abnormality. A locked-up display, an

illuminated Abnormal LED, and failure to count down are all possible indicators of a

Chapter 9: Troubleshooting

Page 9-20