6.9 Internal Set Speed Control
6.9.1 Input Signals for Internal Set Speed Control
6-54
6.9
Internal Set Speed Control
You can set motor speeds in three parameters in the SERVOPACK and then perform speed
control by using external input signals to select the motor speed and direction. Because the
speed is controlled with parameters in the SERVOPACK, an external pulse generator or a refer-
ence generator is not required to control the speed.
•
Rotary Servomotors
•
Linear Servomotors
6.9.1
Input Signals for Internal Set Speed Control
The following input signals are used to change the speed.
When Using the Default Input Signal Allocations
(Pn50A = n.
0)
.
When Changing Input Signal Allocations (Pn50A = n.
1)
Note: You must allocate the /SPD-D, /SPD-A, and /SPD-B signals to use them. You can use the following parame-
ters to allocate the signal to a terminal.
•
Pn50C = n.
X (/SPD-D (Motor Direction) Signal Allocation)
•
Pn50C = n.
X
(/SPD-A (Internal Set Speed Selection Input) Signal Allocation)
•
Pn50C = n.
X
(/SPD-B (Internal Set Speed Selection Input) Signal Allocation)
Refer to the following section for details.
6.1.1 Input Signal Allocations
41
45
46
Pn
3
01
Pn
3
02
Pn
3
0
3
M
CN1
Contact
input
s
/
S
PD-A
s
ignal
/
S
PD-B
s
ignal
/
S
PD-D
s
ignal
S
ERVOPACK
Parameter
s
for Internal
S
et
S
peed
s
Motor direction (forward/rever
s
e)
S
top (internal
s
peed of 0)
S
peed
reference
S
ervomotor
41
45
46
Pn
3
80
Pn
3
81
Pn
3
82
M
CN1
Contact
input
s
/
S
PD-D
s
ignal
/
S
PD-A
s
ignal
S
ERVOPACK
Parameter
s
for Internal
S
et
S
peed
s
Motor direction (forward/rever
s
e)
S
top (internal
s
peed of 0)
S
peed
reference
S
ervomotor
/
S
PD-B
s
ignal
Type
Signal
Connector Pin No.
Meaning
Input
/SPD-D
CN1-41
Changes the Servomotor direction.
/SPD-A
CN1-45
Used to select the internal set speed.
/SPD-B
CN1-46
Used to select the internal set speed.
Type
Signal
Connector Pin No.
Meaning
Input
/SPD-D
Must be allocated.
Changes the Servomotor direction.
/SPD-A
Used to select the internal set speed.
/SPD-B
Used to select the internal set speed.
