Sen Signal; Electrical Specifications; Memory Switch To Determine Whether To Use Input Signal Sen; Memory Switch To 1 To Select Absolute Encoder - YASKAWA SGM series User Manual

SEN signal

• The SEN signal must be set at high level af-
ter at least three seconds after the power is
turned ON.
• When the SEN signal is changed from low
level to high level, +5 V is applied to the ab-
solute encoder, and serial data and initial in-
cremental pulses are transmitted.
• The motor is not turned ON until these operations are complete, regardless of the servo
ON signal (SV-ON).

3) Memory Switch to Determine Whether to Use Input Signal SEN

Cn-01 Bit 1
This memory switch is used to determine whether
to use input signal SEN (1CN-5).
This memory switch is available for absolute en-
coders only (not for incremental encoders).
Setting
0 Uses SEN signal.
1 Does not use SEN signal.
NOTE If the SEN signal is to be turned OFF, then ON again, it must remain at high level for at
least 1.3 seconds before being turned OFF.
SEN signal

4) Memory Switch to 1 to Select Absolute Encoder

Cn-01 Bit E
Sets the encoder type according to the servomotor type to be used.
After changing the memory switch setting, turn the power OFF, then ON.
Motor Type
SGM-jjj31j
SGMP-jjj31j
SGM-jjjW1j
SGMP-jjjW1j
Use of SEN Input Signal
Meaning
ON: High level
OFF
1.3 seconds or more
Encoder Type Selection
Number of Encoder Pulses Per Revolution
Incremental encoder: 2048 pulses per revolution
:
Absolute encoder 1024 pulses per revolution

Electrical Specifications

Host controller Servopack
At high level
7406 or
Approx. 1mA
equivalent
• A PNP transistor is recommended.
• Signal level High level: Min. 4 V
Low level: Max. 0.7 V
Factory For Speed/Torque Control
Setting: 0 Only
Servopack
Servomotor
Absolute encoder
ON
OFF
15 ms
or more
Factory For Speed/Torque Control
Setting: 0 and Position Control
3.8 Special Wiring
3
Preset
Value
0
1
149