FEC AFC1200 - Manual (Page 19)

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WARNING:
DO NOT CONNECT OR DISCONNECT CABLES OR OTHER SYSTEM
COMPONENTS WITH POWER APPLIED.
9.4.3 OFFSET CHECK ABNORMAL ( axis Unit display code "a2" )
<ERROR DESCRIPTION>
the Offset (torque level) Check of the tool is outside of the acceptable limits. The following
table details the limits of the check for various equipment conditions.
If the Offset torque check is not sequence-initiated,
the System will not perform an Offset torque check at
the beginning of each fastening cycle. Offset torque check while the Offset
Check function is not enabled via the
sequence program.
The Offset torque level during a sequence-initiated
self-check must be less than 12% of the full scale
value of the tool. Offset torque check while the Offset
Check function is enabled via the
sequence program. Performed at the
beginning of each fastening cycle.
The Offset torque level during a PLC-initiated self-
check must be less than 12% of the full scale value of
the tool. Offset torque level check while the PLC
Offset Check input is enabled.
<CHECK ITEMS>
1. Verify that the tool is properly secured to the mounting plate, and that there is no sign of
stress or misalignment. Ensure that the socket is not engaged on a fastener and that
there is no tool movement while the self-check is being performed.
2. CHECk the spindle assembly to verify there are no worn bearings, and ensure there is no
binding or excessive prevailing torque.
3. Turn off the power. Verify the homerun cables are in good condition and are properly
connected to the Axis Unit and to the tool.
4. ensure that the ISA Main and Axis Units are not located near any strong electrical or
magnetic fields.
5. Verify correct Axis Unit input power (200~230 VAC +/- 10%, 50/60 Hz, 3-phase) and
ensure that the power cable is in good condition and is properly connected.
6. If the problem still exists, replace the tool (homerun) cables with a set that is known to be
good. A spare cable set is normally provided with each System. (Refer to Section 8.3.5)
7. If the problem still exists, replace the affected tool. (Refer to Section 8.3.4)
8. If the problem persists, replace the affected AXIS UNit. (Refer to Section 8.3.3)
9.4.4 PRESET DATA ABNORMAL (axis Unit display code "a9")
<ERROR DESCRIPTION>
The pREset fastening data is incorrect.
<CHECK ITEMS>
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. 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.
Chapter 9: Troubleshooting
Page 9-19