SMC Networks LECSN-T Series User Manual

12. ABSOLUTE POSITION DETECTION SYSTEM
12 - 4
12.2 Battery
(1) Configuration diagram
EEP-ROM memory
Servo amplifier
Current
position
LS
Detecting the
number of
revolutions
1X
Detecting the
position within
one revolution
MR-BAT6V1SET-A
One-revolution counter
Position control
Speed control
Cumulative revolution counter
(1 pulse/rev)
Servo motor
Command
position
High speed
serial
communication
LSO
1XO
Backup at
pow er off
Home position data
Controller
Step-down
circuit
(6 V → 3.4 V)
(2) Specifications
(a) Specification list
Item
Description
System
Electronic battery backup type
Maximum revolution range
Home position ± 32767 rev.
(Note 1)
Maximum speed at power failure [r/min]
6000
(only when acceleration time until 6000 r/min is 0.2 s or more)
(Note 2)
Battery backup time
Approximately 20,000 hours
(equipment power supply: off, ambient temperature: 20 °C)
Approximately 29,000 hours
(power-on time ratio: 25%, ambient temperature: 20 °C) (Note 3)
Note 1.
Maximum speed available when the shaft is rotated by external force at the time of power failure or the like. Also, if power is
switched on at the servo motor speed of 3000 r/min or higher, position mismatch may occur due to external force or the like.
2.
The data-holding time by the battery. Replace the batteries within three years since the operation start regardless of the
power supply of the driver on/off. If the battery is used out of specification, [AL. 25 Absolute position erased] may occur.
3.
The power-on time ratio 25% is equivalent to 8 hours power on for a weekday and off for a weekend.
Driver
Programmable PC or PLC...etc
LEC-

SMC Networks LECSN-T Series Specifications

General

Brand	SMC Networks
Model	LECSN-T Series
Category	Controller
Language	English