MHT258a (Engl.)
6-17
6.3 Amplifier
This section explains the various setting of amplifier itself.
6.3.1 INC/ABS
Incremental or absolute system can be selected.
System parameter 99
Para.
Name
Setting range
Initial value
Change
99
INC/ABC system
0: INC (Incremental)
1: ABS (Absolute)
0
Power
Setting
Current position backup
0: INC (Incremental)
Current position will be deleted if power is shut down.
Motor rotational quantity is not limited.
1: ABS (Absolute)
Current position will be recovered if power supply recovers.
Motor rotational quantity is limited.
■
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 per revolution.
The multiple rotation count is –32767 to 32767 in an ABS system.
■
Alarm detection in ABS system
The alarms against absolute data overflow (AF) and absolute data lost (AL) will be detected only in the ABS system. These alarms 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
(Super capacitor)
Approx. one hour
Other than the above, 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)
Approx. 7 years
2) External power supply
The connector 1 (CN1) for control input/output is equipped with the input terminals [+BAT], [-BAT] for backup power. Connect 3.6V 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)
Summary of Contents for Faldic-a Series
Page 1: ...RYS V Type User s Manual MHT258a Engl...
Page 55: ...3 28 MHT258a Engl 2 RYS amplifier a 0 03 to 0 2 kW 5 5 150 0 5 0 5 53 60 160 130...
Page 56: ...3 29 MHT258a Engl b 0 4 kW 160 130 60 80 53 150 0 5 0 5 5 5...
Page 57: ...3 30 MHT258a Engl c 0 75 kW 130 160 60 100 54 39 0 5 0 5 150 0 5 0 5 5 5...
Page 58: ...3 31 MHT258a Engl d 1 to 1 5 kW 160 130 60 115 54 54 0 5 0 5 150 0 5 0 5 5 5 Cooling fan...
