A03510 — CU: Calibration data not plausible

A03510 reports that at power-up the drive read its calibration data and found at least one calibration data point invalid. The manual describes the check in two variants: on drive objects that work with a Terminal Module, the Terminal Module 31 (TM31) calibration data is read in during ramp-up and checked for plausibility; on the vector drive objects and on the G120, it is the calibration data for the analog inputs that is read and checked with respect to plausibility during booting. Depending on the drive's configuration, the same condition can also be issued as a fault (F) or as a message with no reaction (N).

The manual's note on accuracy, quoted verbatim: In principle, operation could continue. The analog channel involved possibly does not achieve the specified accuracy.

• On drive objects that use a Terminal Module: the Terminal Module 31 (TM31) calibration data is read in during ramp-up and checked for plausibility, and at least one calibration data point was determined to be invalid.
• On the vector drive objects and on the G120: the calibration data for the analog inputs is read during booting and checked with respect to plausibility, and here too at least one calibration data point was determined to be invalid.

1. Switch off and switch on the power supply for the Control Unit.
2. Check the DRIVE-CLiQ wiring — the manual lists this step for the drives that work with Terminal Modules; for the G120 the remedy names only the power-supply step.
3. If the message reoccurs, replace the module.

The drive identifies the affected analog channel through the alarm value in r2124, which is interpreted binary. This decoding is printed for the entries describing the Terminal Module 31 (TM31) ramp-up check:

• Bit 1: 10 V value, analog input 0 invalid
• Bit 3: 10 V value, analog input 1 invalid
• Bit 4: Offset, analog output 0 invalid
• Bit 5: 10 V value, analog output 0 invalid
• Bit 6: Offset, analog output 1 invalid
• Bit 7: 10 V value, analog input 1 invalid

For the entries that describe the booting check of the analog inputs, the manual gives no bit decoding.

• r2124 — alarm value: for this code, read it as a binary pattern to see which analog input or output had the invalid calibration data point (see the bit list above).

As an alarm, the message requires no acknowledgment; when the drive is configured to raise the condition as a fault, it is acknowledged immediately by powering on (POWER ON). Restarting is the remedy itself: switch the power supply for the Control Unit off and on, and check the DRIVE-CLiQ wiring where the manual lists that step. If the message reoccurs, replace the module. Operation can continue in principle, but the analog channel involved may not achieve the specified accuracy.