SRV-63 series AC servo drives Commissoning
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Chapter 7 Commissioning
7.1 Operation instruction of inertia identification
Inertia identification is divided into online mode and offline mode.
1. Online inertia identification:
It is necessary to set following parameters when online inertia identification is selected:
1).P1.00; 2.P1.08. If P1.00 and P1.08 is larger than 0, the online mode is valid. If the inertia
identification requirements are met, (1. the speed is larger than 150r/min;
2). the ACC time is longer than 20 ms;
3).the continuous acceleration range is more than 150r/min;
4). in 0.3 seconds, the speed can accelerate from 0r/min to 3000 r/min), the identification result will be
updated to P1.01 and written into EEPROM in every 30 minutes automatically.
2. Offline inertia identification:
It is necessary to set following parameters when offline inertia identification is selected: 1.P1.05;
2.P1.06. 3. P1.07. The offline mode is available by the auxiliary function EF-JId of the panel operation.
Refer to chapter 5.2.5.5 for the EF-JId procedure. The offline mode is not affected by P1.00 and
P1.08.
Before executing the auxiliary function of EF-JId, set P1.05 according to the operation mode of the
motor, set P1.06 according to the rotating cycle and set P1.07 according to the mechanical rigidity.
The stronger the mechanical rigidity, the smaller the ACC/DEC time constant. Set P1.05 to 1 or 2. The
smaller the value of P1.06 and P1.07 is, the more correct the identification result.
When executing the auxiliary function of EF-JId, please ensure P1.05 and P1.06 meet the needs;
otherwise, there may be damage to the machine. Press Mode key can stop the execution.
If the execution EF-JId is finished normally, the identification result will be saved into P1.01
automatically. If there is fault, P1.01 will keep the result before identification. If it report s Er25-7,
increase P1.06 or reduce P1.07.
The precision of the identification result will be affect ed if following occur: 1. Mechanical rigidity is low;
2. The load inertia change too fast; 3.There is a space; 4. The external disturbance changes too fast.
7.2 General method for parameters adjusting
There are two kinds of parameters adjustment:
1. Automatic adjustment setting of rigidity choice. The inertia ratio of the load can be counted
manually. There are 32 rigidity sets for the gain setting of the loop.