System Parameter 99; Pulse Encoder; Alarm Detection In Abs System; Current Position Backup - Fuji Electric Faldic-a RYS-R Series User Manual

(20) System parameter 99［Basic type, SX bus, T-link］
Para. Name
99 INC/ABS system
Setting
0: INC (Incremental)
1: ABS (Absolute)
Incremental or absolute system can be selected.

■ Pulse encoder

A 16-bit serial encoder built-in the motor is an INC/ABS common-use encoder.
An ABS system can be established if a battery is installed in the amplifier.
The encoder can output a freq. dividing output pulse of 16 to 16384 [pulse/rev].
The multiple rotation count is –32767 to 32767 in an ABS system.

■ Alarm detection in ABS system

The alarms against absolute data lost (AL) will be detected only in the ABS system. This alarm will be reset by the position preset.

■ Current position backup

When power failure occurs, the absolute data of encoder can be backed up by the battery built-in the amplifier. The backup time is approx.
one hour after the motor encoder cable is disconnected from the amplifier.
Backup time by encoder alone
Some backup methods are available.
1) Battery built-in amplifier (type : WBS-S)
This is a lithium (primary) battery built in the amplifier and cannot be recharged.
The lifetime is approx. 7 years on condition that it is turned on for 8 hours per day (it backups 16 hours)
Lifetime of optional battery
(16 hour backup after 8 hour power on per day)
2) External battery
The connector 1 (CN1) for control input/output is equipped with the input terminals [+BAT], [-BAT] for backup power. Connect 3.6 [V] power
to these trminalls.
Do not install the backup battery into the amplifier itself if you connect the backup power.
3) Power supply for control circuit
If a UPS is prepared as a peripheral device, connect its power to the control power input terminal so that power can be supplied to the control
circuit only (backup is available at the same time)
Setting range
0: INC (Incremental)
1: ABS (Absolute)
Current position backup
Current position will be lost if power is shut down.
Motor rotational quantity is not limited.
Current position will be recovered if power supply recovers.
Motor rotational quantity is limited.
(Super capacitor)
Initial value
0
Approx. one hour
Approx. 7 years
6-46
Change
Power
MHT260a (Engl.)