Specifications

3.WIRING
3– 26
b. Connection diagram
Generally connect as shown in Fig. 3-11. When a precision speed command is required,
connect as shown in Fig. 3-12. In this case, the temperature fluctuation of the command
voltage is ±0.002%/°C. Note that as the maximum value of the command voltage is approx.
+6V, adjust the maximum value using parameter No. 25.
c. Speed selection 1 (SP1)/speed selection 2 (SP2) and speed command values
Use speed selection 1 (SP1) and speed selection 2 (SP2) to select the speed from among
those set to the internal speed commands 1 to 3 and set to the analog speed limit (VLA)
as indicated in Table 3-6.
When the internal speed commands 1 to 3 are used to command the speed, the speed
does not vary with the ambient temperature.
d. Limiting speed (VLC)
VLC-SG are connected when the servo motor speed reaches the limit speed set to any of
the internal speed limits 1 to 3 or analog speed limit.
SG
P15R
VLA
LG
SD
Fig. 3-11 Connection Example 1
2kΩ
2kΩ
Japan Resistor
RRS10 or equivalent
Servo amplifier
SP1
SP2
NEC
1SZ52 or
equivalent
2kΩ
15V
1/2W
860kΩ
Servo amplifier
VLA
LG
SD
Japan Resistor
RRS10 or equivalent
Fig. 3-12 Connection Example 2
Speed Command ValueAcross SP1-SG Across SP2-SG
Analog speed limit (VLA)
Internal speed limit 1 (parameter No. 8)
Internal speed limit 2 (parameter No. 9)
Internal speed limit 3 (parameter No. 10)
Open
Short
Open
Short
Open
Open
Short
Short
Table 3-6 SP1/SP2 and Speed Command Values