Interface Circuit - YASKAWA E-II Series User Manual

6 Wiring

6.3.4 Interface Circuit

6.3.4 Interface Circuit

This section shows examples of SERVOPACK I/O signal connection to the host controller.
(1) Interface for Reference Input Circuits
(a) Analog Input Circuit
CN1 connector terminals, 5-6: Speed reference input and 9-10: Torque reference input are explained below.
Analog signals are either speed or torque reference signals at the impedance below.
• Reference speed input: About 14 kΩ
• Reference torque input: About 14 kΩ
The maximum allowable voltages for input signals is
12 V
(b) Position Reference Input Circuit
CN1 connector terminals, 7-8: Reference pulse input, 11-12: Reference code input and 15-14: Clear input are
explained below.
An output circuit for the reference pulse and position error pulse clear signal at the host controller can be either
line-driver or open-collector outputs. The following shows by type.
Host controller
Applicable line driver
SN75174 manufactured
by Texas Instruments
or the equivalent
Open-collector Output, Example 1:
Host controller
Vcc
R1
Tr1
Use the examples below to set pull-up resistor R1 so the input
current, i, falls between 7 mA and 15 mA.
R1 = 2.2 kΩ with a
±
Vcc of 24 V 5%
6-14
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Analog Voltage Input Circuit
1.8 kΩ (1/2 W)min.
3
2
25HP-10B
2 kΩ
1
Line-driver Output Circuit
SERVOPACK
150 Ω
2.8 V ≤ (H level) - (L level) ≤ 3.7 V
Power Supply Provided by User
SERVOPACK
i
150 Ω
4.7 kΩ
V
V
F
Application Examples
R1 = 1 kΩ with a R1 = 180 Ω with a
±
Vcc of 12 V 5% Vcc of 5 V
12 V.
±
SERVOPACK
Host controller
V-REF or
T-REF
About 14 kΩ
SG
0 V
4.7 kΩ
Using 12-V Power Supply Built into SERVOPACK,
Host controller
F
= 1.5 to 1.8 V
1.5 V max.
when ON
±
5%
Analog Voltage Input Circuit (D/A)
SERVOPACK
V-REF or
T-REF
D/A
About 14 kΩ
SG
0 V
Open-collector Output, Example 2:
Non-insulated Input
SERVOPACK
PL1, PL2, PL3 terminals
1.0 kΩ
150 Ω
About
9 mA
+12 V
0 V