YASKAWA SGDB-15VN - Protection Functions and Alarms

Application
Alarm Code SVALM Output
Error Detection Function
Description
OE
OFF
User constant error
Absolute data error
An absolute or parameter (user constant) error.
lO
OFF
Overcurrent
Ground detection
• Overcurrent flowed through the main circuit.
• Overcurrent flows to the main circuits and Servomotor
power lines are grounded.
30
OFF
Regenerative error
A regenerative resistor circuit malfunctioned.
4❑
OFF
Overvoltage
Undervoltage detection
DC voltage is abnormal in the main circuit.
51
OFF
Overspeed detection
Motor speed exceeded the maximum speed.
7E1
OFF
Overload
Heat sink overheating
detection
• The load torque for the motor and SERVOPACK was ex-
ceeded.
• SERVOPACK heat sink overheated.
B❑
OFF
Hardware error
The hardware circuit is abnormal.
CE
OFF
Phase error detection
Overrun detection
Broken PG signal line
• An overrun was caused by the motor or the PG wiring in-
correct.
• Noise in encoder wiring
8E1
OFF
Encoder alarm Absolute encoder alarm.
9❑
ON
Warning
A user constant or command error.
DO
OFF
Position error overflow
The number of pulses accumuated in the error counter
exceeded the preset value.
ED
OFF
Communication error A synchronization error or communications error.
FE
OFF
Power supply line not
connected
Instantaneous power loss
error
• One phase of the main circuit power supply not connected.
• Power loss occurred during operation.
99
ON
No alarm
—
5.4.2 Error Detection Function
5.4 Protection Functions
The SERVOPACK is equipped with various functions to protect the driver and motor from damage.
5.4.1 Dynamic Brake Function
The SERVOPACK is equipped with a dynamic brake for emergency stops. The brake is operated
for any of the following conditions.
• When an alarm occurs (error 'detection)
• When the servo receives SV_OFF command
• When power is turned OFF
5.4.2 Error Detection Function
Tabl e . 5.2 shows the error detection function in the SERVOPACK. Alarm details can be checked
by MECHATROLINK communication and SVALM output.
Table 5.2 Error Detection Function
ON : Output transistor is ON
OFF : Output transistor is OFF
5 -8