YASKAWA SGDV series User Manual

9.3 Troubleshooting Malfunction Based on Operation and Conditions of the Servomotor
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9
Troubleshooting
Dynamic Brake
Does Not Operate
Improper Pn001.0 setting
Check the setting for parameter
Pn001.0.
Correct the setting for parameter
Pn001.0.
DB resistor disconnected
Check if excessive moment of iner-
tia, motor overspeed, or DB fre-
quently activated occurred.
Replace the dynamic brake unit or
change the external dynamic brake
circuit. And reduce the load.
DB drive circuit fault −
A defective component is in the
dynamic brake circuit inside SER-
VOPACK. Replace the SERVO-
PACK.
Wiring of the dynamic brake unit is
incorrect.
Check the wiring. Correct the wiring.
(cont’d)
Problem Probable Cause Investigative Actions Corrective Actions

YASKAWA SGDV series Specifications

General

Series	SGDV
Communication	MECHATROLINK-II, MECHATROLINK-III, EtherCAT
Control Modes	Position, Speed, Torque
Protection Features	Overcurrent, Overvoltage, Undervoltage, Encoder error
Ambient Temperature	0°C to 55°C
Cooling Method	Natural cooling or forced air cooling
Voltage	200V, 400V
Weight	Varies depending on model (e.g., 0.6 kg to 10 kg)