Specifications

Drive set-up procedure
14.1.6
External encoder
14
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 Resetting Absolute encoder
If an absolute encoder (motor encoder), used for a Servo drive, exhibits an alarm such as
encoder alarm 129 (81H), reset the encoder in the following operation.
1. Connect the Digital operator to the Converter. Select a drive (dr1, dr2 ...: the drive num-
ber is a value, 1 more than the rotary switch setting value of each drive) to check by
using [UP] and [DOWN] keys, and press [DATA ENTER] key.
2. Press [DSPL/SET] key to display "Fn
□□□
"
, and then press [UP] key to display
"Fn008". Press [DATA ENTER] key.
3. "PGCL1" is displayed. Press [UP] key to display "PGCL5".
4. Press [DSPL/SET] key to display "done".
5. The alarm is released when the power is turned on again.
14.1.6 External encoder
The following explains how to set a External encoder.
To use a External encoder, you need to set the following machine data and parameters in
addition to above-mentioned motor encoder set-up.
To use a External encoder, you need to change the setting value from "1" to "2" of the "Position mea-
suring system" for PLC->NCK signals DB3nDBX1.5-1.6.
• DBX1.5 = 1 & DBX1.6 = 0: External encoder inactive.
• DBX1.5 = 1 & DBX1.6 = 1: External encoder active.
 CNC setting
• MD30200 NUM_ENC (For each axis)
Meaning: The number of encoders
Setting value: 0 --- No encoder used.
1 --- Only motor encoders
2 --- Motor encoders + External encoders
• MD30230 ENC_INPUT_NR [1] (For each axis)
Meaning: Encoder input port number
Standard setting value: 1
• MD30240 [1] ENC_TYPE [1] (For each axis)
Meaning: External encoder type
Setting value: 0 --- No External encoder used.
1 --- Incremental encoder
4 --- Absolute encoder
Note: If you want to use an absolute encoder as an incremental encoder,
assign "1".
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