Instruction Manual
WARNING:
DO NOT CONNECT OR DISCONNECT CABLES OR OTHER SYSTEM
COMPONENTS WITH POWER APPLIED.
9.4.2 CAL CHECK ABNORMAL ( axis Unit display code "a1" )
<ERROR DESCRIPTION>
the Calibration (Cal) level of the tool transducer is outside of the acceptable limits. The
following table details the limits of the check for various equipment conditions.
If the Cal level is not sequence-initiated, the System
will not perform a Cal level self-check at the beginning
of each fastening cycle.
Cal level check while the Cal Check
function is not enabled via the
sequence program.
The Cal level during a sequence-initiated self-check
must be within ± 0.075 VDC (3% of 2.5 VDC) of the
value read from the tool EEPROM.
Cal level check while the Cal Check
function is enabled via the sequence
program. Performed at the beginning of
each fastening cycle.
The Cal level during a PLC-initiated self-check must
be within ± 0.075 VDC (3% of 2.5 VDC) of the value
read from the tool EEPROM.
Cal level check while the PLC Self-
Check input is enabled or the Main Unit
Manual CAL is activated.
The Cal level must be within ± 0.075 VDC (3% of
2.5 VDC) of the value read from the tool EEPROM.
Cal level check at power on.
<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 there is no tool movement while the self-check is
being performed.
2. Verify the homerun cables are in good condition and are properly connected to the Axis
Unit and the tool.
3. ensure that the ISA Main and Axis Units are not located near any strong electrical or
magnetic fields.
4. 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.
5. 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 supplied with each System. (Refer to Section 8.3.5)
6. If the problem still exists, replace the affected tool. (Refer to Section 8.3.4)
7. If the problem persists, replace the affected AXIS UNit. (Refer to Section 8.3.3)
Chapter 9: Troubleshooting
Page 9-18