YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

Page: 237 / 373

14.1 Fundamental settings
14-27
Spindle drive
If a External encoder is to be used at a Spindle drive, the encoder at the Spindle motor must
be a serial encoder. You cannot use pulse encoders both for motor encoder and for External
encoder at the same time.
• MD6530 (Cn530) ENCODER_SPECIFICATION_1 (For each axis)
Meaning: External encoder specification
Setting value: Bit 1, 0 0, 0 --- No encoder used.
0, 1 --- External encoder used.
1, 0 --- Motor encoder used.
Bit 2 0 --- CCW rotation to be treated as forward rotation.
(1 --- CW rotation to be treated as forward rotation.)
Note: To set up reverse rotation connection, use CNC parameter.
Bit 6 0 --- Incremental encoder
1 --- Absolute encoder
Bit 7 0 --- Pulse encoder
1 --- Serial encoder
• MD6534 (Cn534) NUMBER_OF_ENCODER_PULSE_1 (For each axis)
Meaning: The number of motor encoder pulses (4-multiplication value)
Setting value: 11 --- 2048 Pulse encoder
12 --- 4096 Pulse encoder
13 --- 8192 Pulse encoder
19 --- 19-bit Serial encoder
Note: If this parameter is set to a number ranging from 8 to 32, the parame-
ter represents a value of n in "2 to the n-th power" pulse type
encoder. If the parameter is set to "32" or larger number, the parame-
ter represents the number of 4-multiplication pulses of a pulse
encoder.
• MD6915 (Cn87F) FULL_CLOSED_PG_PULSE_L_1 (For each axis)
Meaning: The number of PG pulses used for position control / Single revolution of
motor (Lower word)
Setting value: [Pulse]
• MD6916 (Cn880) FULL_CLOSED_PG_PULSE_H_1 (For each axis)
Meaning: The number of PG pulses used for position control / Single revolution of
motor (Upper word)
Setting value: [Pulse]
Note: If a External encoder is used, set MD6915 and MD6916 to the num-
ber of pulses of the External encoder.
Assign a 4-multiplication number to MD6915 and MD6916.
The next 2 pages show lists of machine data and parameters to be set in accordance with
specifications of feed axis-related motor encoder and External encoder.