Carry out a POWER ON
Procedure
• Switch o the Control Unit (CU) and switch on again (POWER OFF -> POWER ON).
Once the electronic rating plate has been successfully transferred, no alarm message is
displayed.
Correcting the angular oset using the motor identication
WARNING
Injury caused by unpredictable movement of the machine or system
Skipping this step can result in incorrect adjustment of the motor encoder and in turn
undesirable positive feedback. The motor can unpredictably respond to setpoint inputs.
(for example, a torque/speed can be established even though zero speed is entered as setpoint)
• Correct the oset angle as described below.
If you carry out a motor identication, then the oset angle of the encoder is determined and
automatically corrected.
Carefully ensure the following before starting the motor identication.
• The motor is securely xed.
• The motor rotor can freely rotate.
• A tted key cannot be ung out of the rotating shaft.
Procedure
1. Set p1959 = 1100 0100 0000 0000 (binary) (hex "C400").
2. If a brake is available, set p1215 = 2 (open brake).
3. Set p1960 = 1 (start the motor identication as soon as the controller enable signal is active).
4. Enable the controller from the control panel or a commissioning tool.
-> The motor identication is performed. Within fractions of a second, the motor accelerates
and is then held.
-> The oset angle has been corrected.
5. Withdraw the controller enable signal using the control panel or a commissioning tool.
❒
Checking the angular oset using the motor identication
Check the correction of the oset angle by repeating the motor identication.
Procedure
1. Set p1959 = 1100 0100 0000 0000 (binary) (hex "C400").
2. If a brake is available, set p1215 = 2 (open brake).
3. Set p1960 = 1 (start the motor identication as soon as the controller enable signal is active).
Description
2.4 Encoder replacement variants
Encoder replacement for SIMOTICS S-1FK2 and S-1FT2
52 Service Manual, 07/2022, A5E52211160B AA
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