5.3 Speed Control
5-19
5
Op
er
at
io
n
5.3
Speed Control
This section describes operation with speed control.
Select the speed control with parameter Pn000.1.
5.3.1
Basic Settings for Speed Control
This section describes the basic settings for speed control.
(1) Signal Setting
Input the speed reference to the multi-winding drive unit using the analog voltage reference to control the ser-
vomotor speed in proportion to the input voltage.
Maximum input voltage: ±12 VDC
Input Circuit Example
Example:
Rated motor speed with Pn300 = 006.00: 6.00 V [Factory setting]
Note: The setting value is 600, but it will be displayed on the operator as 006.00.
Connect the pins for the V-REF signal and SG to the speed reference output terminal on the host controller
when using a host controller, such as a programmable controller, for position control.
Note: Always use twisted-pair cable to control noise.
Parameter
Meaning
When Enabled
Classification
Pn000
n.
0
[Fac-
tory setting]
Speed control
After restart
Setup
Type
Signal Name
Connector
Pin Number
Name
Input
V-REF
CN1-5
Speed reference input
SG
CN1-6
Signal ground for speed reference input
Speed Refer-
ence Input
Rotation Direction
Motor Speed
SGMVV-
D
B
Servomotor
(Motor Speed: 1500 min
-1
)
+6 V
Forward
Rated motor speed
1500 min
-1
–3 V
Reverse
1/2 rated motor speed
-750 min
-1
+1 V
Forward
1/6 rated motor speed
250 min
-1
SG
CN1
6
V-REF
5
D/A
0 V
Approx.
14 k
Ω
Multi-winding drive unit
Host
controller
