Specifications

2. OPERATION
2– 36
Basic parameters
10
SC3
Internal speed command 3:
Used to set speed 3 of internal speed commands.
1000
S
Internal speed limit 3:
Used to set speed 3 of internal speed limits.
T
11
STA
Acceleration time constant:
Used to set the acceleration time required to reach the
rated speed from zero speed in response to the analog
speed command and internal speed commands 1 to 3.
0
0 to 20000
S • T
ms
13
STC
S-pattern acceleration/deceleration time constant:
Used to smooth start/stop of the servo motor.
0
0 to 1000
S • T
ms
12
STB
Deceleration time constant:
Used to set the deceleration time required to reach
zero speed from the rated speed in response to the
analog speed command and internal speed commands
1 to 3.
0
r/min
Set 3000 (3s) to accelerate the HC-MF series servo
motor (rated speed: 3000r/min) from 0r/min to 1000
r/min in 1 second.
If the preset command speed is
lower than the rated speed,
acceleration/deceleration time
will be shorter.
Time
Parameter
No. 12 setting
Parameter
No. 11 setting
Speed
Rated
speed
Zero
speed
Command
speed
Servo motor
speed
Zero
speed
STC
STA
STC
STC
STB
STC
Time
STA: Acceleration time constant (parameter No. 11)
STB: Deceleration time constant (parameter No. 12)
STC: S-pattern acceleration/deceleration time con-
stant (parameter No. 13)
Class No.
Symbol
Initial
Value
Unit
Setting
Range
Control
Mode
Name and Function
0 to instan-
taneous per-
missible
speed
Example