Encoder Phase Configuration; Auto-Tuning With Elevator Cable Connected To Motor Shaft - Hitachi SJ300-EL Series Instruction Manual Supplement

2.10 Encoder Phase Configuration

Using this setting, if the encoder is connected with A and B phase reversed, the signal from the encoder
can be reversed without actually changing the encoder wiring. This configuration doesn't affect the Z
phase.
For proper operation, the inverter expects the encoder signal to be as follows when motor rotates in the
forward direction:
P010 = 00: 'A' phase first (Standard encoder, recommended)
A phase (EAP)
B phase (EBP)
P010 = 01: 'B' phase first
A phase (EAP)
B phase (EAP)
Depending on the configuration of the particular encoder installed, the signal phases may be reversed.
Instead of rewiring the inverter, simply set parameter P010 as shown below.
Function
Code
Encoder phase configuration
P010

2.11 Auto-tuning with Elevator Cable Connected to Motor Shaft

With this function, motor constants can be measured without disconnecting the cable from the motor,
and inverter parameters can be auto-tuned. Motor constants R1, R2 and L are automatically
measured. During auto-tuning, the inverter outputs DC voltage to excite the motor. This DC excitation
does not rotate the motor. Nevertheless, the brake should be always engaged during this process.
Then, you will manually adjust parameters of I
values for I , refer to motor specifications or test report. Otherwise, typical values can be used. You
0
can also measure the appropriate value following the procedure which is described in Chapter 4.
Function Name
Chapter 2 – Explanation of Functions
Setting Range
－
(no load current) and J (inertia). To obtain correct
0
23
Remarks
00: OFF (A phase first)
01: ON (B Phase first)