Yaskawa Sigma-5 User Manual: Operation of Digital Operator - Manual (Page 54)

3 Utility Function Mode
3.2.7 Absolute Encoder Multiturn Reset and Encoder Alarm Reset (Fn008)
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3.2.7 Absolute Encoder Multiturn Reset and Encoder Alarm Reset
(Fn008)
Setting up the absolute encoder is necessary in the following cases.
• When starting the machine for the first time
• When an encoder backup error alarm (A.810) is generated
• When an encoder checksum error alarm (A.820) is generated
• When initializing the rotational serial data of the absolute encoder
(1) Precautions on Setup
• If the following absolute encoder alarms are displayed, cancel the alarm by using
the same method as the set up (initializing) with Fn008. They cannot be canceled
with the ALM_CLR command.
• Encoder backup error alarm (A.810)
• Encoder checksum error alarm (A.820)
• Any other alarms (A.8 ) that monitor the inside of the encoder should be can-
celed by turning OFF the power.
(2) Preparation
The following conditions must be met to setup the absolute encoder.
• The write prohibited setting (Fn010) must not be set to write-protect parameters.
• The servomotor power must be OFF.
CAUTION
• The rotational data will be a value between -2 and +2 rotations when the absolute
encoder setup is executed. The reference position of the machine system will
change. Set the reference position of the host controller to the position after
setup.
If the machine is started without adjusting the position of the host controller, unex-
pected operation may cause injury or damage to the machine. Take sufficient
care when operating the machine.