Product specifications

Chapter 1 Outlines of the HA-680 driver
HA-655_V4 - 11 -
1-9 LED display
The 2 LEDs (green and red) indicate the state of the HA-680 driver.
State LED green LED red Remarks
Control power ON ON OFF
The connected actuator and the actuator set to
the driver are different.
Blinking OFF
Servo-ON ON ON
Alarm (*1) ON Blinking
The number of times it blinks varies
depending on the alarm. Refer to 1-10.
CPU error Blinking Blinking The green and red LEDs blink alternately.
*1 If two or more alarms occur, only the latest alarm is displayed.
1-10 Outline of protective functions
The HA-680 driver has various types of protection function. When an error occurs in the system, it
immediately turns off the servo, and outputs an “alarm” signal to the host device.
When these protection functions trip, driving of the actuator is stopped (the motor becomes servo-off),
and the display LED blinks at 0.5-second intervals. (It illuminates in green and blinks in red: The number
of times it blinks varies depending on the alarm. See below.)
If two or more alarms occur, only the latest alarm is displayed. Up to 8 latest alarms are recorded.
Recorded alarms can be checked with “Alarm History” of dedicated communication software PSF-520.
Alarm code Description
No. of times
LED blinks
Releasing
Overload Electronic thermal detected an overload state. 1 Available *1
Deviation counter
overflow
The value of the deviation counter exceeded the parameter
setting value.
2 Available *1
Encoder break
detection
The encoder line was broken. 3 Not available *2
Serial encoder data could not be received 10 times in a row. 4
Encoder reception
error
Serial encoder data could not be received over an extended time
period, and encoder monitor could not be outputted successfully.
5
Not available *2
UVW error All UVW signals of the encoder became the same level. 6 Not available *2
Regenerative error The main circuit voltage detection circuit detected overvoltage. 7 Not available *2
Operation
temperature error
The temperature of the HA-680 main unit tripped the temperature
rise sensor.
8 Not available *2
System error An error of the current detection circuit was detected. 9 Not available *2
Overcurrent The current detection circuit detected excessive current. 10 Not available *2
Load short circuit Excessive current flowed through the FET. 11 Not available *2
Memory error Read/write of EEPROM failed. 12 Not available *2
Overspeed
The motor axis speed exceeded the maximum rotation speed
+100 rpm for 0.5 s or longer.
13 Not available *2
*1 The servo does not turn on unless the S-ON signal is entered again after the alarm is cleared with the
CLR signal.
*2: Shut off the power supply after remedying a cause of the alarm that releasing is impossible. Then
turn on the power supply.