Chapter 4
4-4
Operation
4-2 Switch Settings
With SMARTSTEP A-series Servo Drivers, operation settings can be performed simply
by using the front panel switches. Set the switches appropriately according to the
system configuration.
4-2-1 Switch Nomenclature and Functions
■ Unit No. Rotary Switch: UNIT No. (RS-422/485)
Use this switch to set the communications unit number for CN1 and CN3.
When performing multiple-axis communications with multiple Servo Drivers
from CN1 using, for example, a personal computer, set the rotary switch to a
setting other than 0 (i.e., between 1 and F). Be sure not to use the same unit
number more than once when performing multiple-axis communications.
Attempting communications with duplicated unit numbers may result in dam-
age to communications connectors.
■ Gain Adjustment Rotary Switch: GAIN
The gain adjustment rotary switch adjusts the response of the Servomotor. To
reduce (slow down) the Servomotor’s response, set the gain adjustment rotary
switch to a low value. To increase (speed up) the Servomotor’s response, set the
gain adjustment rotary switch to a high value.
Note If the gain adjustment rotary switch is set to 0, the Servomotor will operate according to the
Servo Driver’s internal parameter.
■ Function Switches
The function switches set Servo Driver functions.
Switch 6: Switches between switch and parameter settings.
Switches 5 and 4: Set the resolution.
Switch 3: Sets the command pulse input.
Switch 2: Sets the dynamic brake.
Switch 1: Switch to online autotuning.
Note Turn the power supply OFF before using switches 2 to 6.
Unit No. rotary switch. (Default setting: 0.)
Gain adjustment rotary switch. (Default setting: 4.)
Function setting switch. (Default setting: all OFF.)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
UNIT No.
(RS-422/485)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
GAIN
123456
PRMTR
PLS/SIGN
DB ON
AUTO TUNING ON
SW
CW/CCW
DB OFF
OFF
500P/R
×10 ×1
1000P/R
O
N
(1P) (2P)
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