Instruction manual

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3. SIGNALS AND WIRING
(3) Speed setting in speed control mode
(a) Speed command and speed
The servo motor is run at the speed set in parameter No. 8 (internal speed command 1) or at the speed
set in the applied voltage of the analog speed command (VC). A relationship between analog speed
command (VC) applied voltage and servo motor speed and the rotation directions determined by the
forward rotation start (ST1) and reverse rotation start (ST2) are as in (a), (1) in section 3.6.2.
Generally, make connection as shown below:
SP1
DOCOM
P15R
VC
LG
SD
Servo amplifier
2k
2k
(Note)
For the sink I/O interface. For the source I/O interface, refer to Section 3.8.3.
Note.
Japan resistor
RRS10 or equivalent
(b) Speed selection 1 (SP1), speed selection 2 (SP2) and speed command value
Choose any of the speed settings made by the internal speed commands 1 to 3 using speed selection 1
(SP1) and speed selection 2 (SP2) or the speed setting made by the analog speed command (VC).
(Note) External input signals
SP2 SP1
Speed command value
0 0 Analog speed command (VC)
0 1 Internal speed command 1 (parameter No. PC05)
1 0 Internal speed command 2 (parameter No. PC06)
1 1 Internal speed command 3 (parameter No. PC07)
Note. 0: off
1: on
By making speed selection 3 (SP3) usable by setting of parameter No. 43 to 48, you can choose the
speed command values of analog speed command (VC) and internal speed commands 1 to 7.
(Note) External input signals
SP3 SP2 SP1
Speed command value
0 0 0 Analog speed command (VC)
0 0 1 Internal speed command 1 (parameter No. PC05)
0 1 0 Internal speed command 2 (parameter No. PC06)
0 1 1 Internal speed command 3 (parameter No. PC07)
1 0 0 Internal speed command 4 (parameter No. PC08)
1 0 1 Internal speed command 5 (parameter No. PC09)
1 1 0 Internal speed command 6 (parameter No. PC10)
1 1 1 Internal speed command 7 (parameter No. PC11)
Note. 0: off
1: on
The speed may be changed during rotation. In this case, the values set in parameters No. PC10, PC11
and 12 are used for acceleration/deceleration.
When the internal speed command 1 is used to command the speed, the speed does not vary with the
ambient temperature.
(c) Speed reached (SA)
As in Section 3.6.2 (2).