YASKAWA SGDJ Series, Руководство пользователя

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6 Wiring
6.3.6 Interface Circuit
6-14
6.3.6 Interface Circuit
This section shows examples of SERVOPACK I/O signal connection to the host controller.
(1) Interface for Reference Input Circuits
(a) SGDJ- ††† S Analog Input Circuit
CN1 connector terminals, 3-4: Speed reference input and 1-2: Torque reference input are explained below.
Analog signals are either speed or torque reference signals at the impedance below.
• Reference speed input: About 14 k
Ω
• Reference torque input: About 14 k Ω
The maximum allowable voltages for input signals is ± 12 V.
(b) SGDJ- ††† P Position Reference Input Circuit
CN1 connector terminals, 1-2: Reference pulse input, 3-4: Reference code input and 5-6: 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.
Analog Voltage Input Circuit Analog Voltage Input Circuit (D/A)
1.8 k
Ω
(1/2 W) min.
25HP-10B
2 k Ω
3
2
12 V
1
0 V
SG
About 14 k
Ω
SERVOPACK
V-REF or
T-REF
0 V
SG
Host controller
About 14 k
Ω
SERVOPACK
V-REF or
T-REF
D/A
Line-driver Output Circuit Open-collector Output, Example
Power Supply Provided by User
150 Ω
4.7 k
Ω
2.8 V ≤ (H level) - (L level) ≤ 3.7 V
Applicable line driver
SN75174 manufactured
by Texas Instruments
or the equivalent
Host controller
SERVOPACK
V
F
= 1.5 to 1.8 V
Vcc
Tr1
V
F
R1
i
150 Ω
4.7 k Ω
Use the examples below to set pull-up resistor R1 so the input
current, i, falls between 7 mA and 15 mA.
Application Examples
R1 = 2.2 k Ω with a
Vcc of 24 V
±
5%
R1 = 1 k
Ω
with a
Vcc of 12 V
±
5%
R1 = 180
Ω
with a
Vcc of 5 V
±
5%
Host controller
SERVOPACK