Instruction Manual

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2. Re-enter the data on the MACHINE CONFIGURATION / SET SEQUENCE / SET

PARAMETER screens (or reload the Preset files from the PRESET FILE UTILITY

screen).

3. ensure that the ISA Main Unit is not located near any strong electrical or magnetic fields.

4. Confirm that the ISA Main Unit input power remains constantly within specifications:

200~230 VAC +/- 10%, 50/60 Hz, single phase.

5. Verify that the ISA Main Unit power cable is free from damage and is properly connected.

6. 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.

9.3.5 SELECTED SEQUENCE DOES NOT EXIST

Sequence programs that are not entered as valid (preset) are being selected by an external

device (such as a PLC).

1. Verify that the MACHINE CONFIGURATION / SET SEQUENCE / SET PARAMETER

screens match the physical machine configuration.

2. Re-enter the data on the MACHINE CONFIGURATION / SET SEQUENCE / SET

PARAMETER screens (or reload the Preset files from the PRESET FILE UTILITY

screen.)

3. Ensure that a valid (preset) sequence number is being output to the ISA Main Controller.

4. ensure that the ISA Main Unit is not located near any strong electrical or magnetic fields.

5. Confirm that the ISA Main Unit input power remains constantly within specifications:

200~230 VAC +/- 10%, 50/60 Hz, single phase.

6. Verify that the ISA Main Unit power cable is free from damage and is properly connected.

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

9.3.6 SPINDLE COMMUNICATION I/F ABNORMAL

The ISA Main Unit and the Axis Unit are unable to communicate.

1. 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. In that case, use the Axis Unit connected directly

to the ISA Main Unit ribbon cable to perform the following checks.

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

connected to both the MAIN UNIt and the AXIS UNIT.

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

magnetic fields.

4. 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).

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

Chapter 9: Troubleshooting

Page 9-13