SD710 Series Servo Drive User Manual Chapter 5 Commissioning and Operation
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5.6.3 Replacing the battery
If the battery voltage is below approx. 2.7 V, "Encoder battery alarm (Er.830)" or "Absolute encoder battery abnormality
warning (A.930)" will be displayed. When Er.830 or AL.930 appears, you can first check if the battery is loose; if not, the
battery is under-voltage and the encoder battery needs to be replaced.
Table 5-30 Procedure for Replacing the Absolute Encoder Battery
Steps
Item
Operations
1
Power on electric
power
Turn on the control power of the servo driver only
2
Battery
replacement
Battery installation on top of the encoder
cable: open the battery box on the absolute encoder
cable
→
remove the old battery
→
install the new battery
→
close the battery box again
Battery installation on top of the upper unit
: Remove the old battery
→
Install the new battery
3
Elimination of
faults or alarms
Warning AL.930 displayed on the drive panel
: wait about 5s after replacing the battery and the
warning will be removed automatically.
The
drive panel displays fault Er.830
: Replace the battery and reapply power to eliminate the fault.
4
Confirm complete
elimination of the
fault
After the drive is re-powered, there is no fault display on the drive panel, indicating a successful
battery replacement.
Precautions
●
When replacing the battery, do so with the drive powered up and the encoder connected properly, otherwise
the absolute encoder data will be lost.
The operation to clear the encoder multi-turn value can be performed with the auxiliary function Fn008, see "
"; it can also be operated in the "Control Panel" on the VCSD.exe software of the
host computer.
5.7 Maximum number of revolutions
5.7.1 Overview
When controlling the position of a rotating body such as a rotary table, the number of revolutions will always exceed the
upper limit of the absolute value encoder after a certain period of time because it can only rotate in one direction.
For example, suppose the turntable in the figure below is a machine that can only move in one direction.
Motor
Gear
Turntable
m
n
!