Omron NX-EC0112, Руководство пользователя

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A - 11
Appendices
NX-series Position Interface Units User’s Manual (W524)
A-1 D
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A
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1-2 Increme
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Input U
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NX-EC0142
Unit name Incremental Encoder Input Units Model NX-EC0142
Number of channels
1 channel Type of external con-
nections Screwless clamping terminal block
(12 terminals
× 2)
I/O refreshing method
*1
Free-Run refreshing, synchronous I/O refreshing, or task period prioritized refreshing
Indicators
Refer to NX-EC0132 and
NX-EC0142 on page 6-10.
Input signals
Counter: Phases A, B, and Z
External Inputs: 3
Input form Line receiver input
Counting unit Pulses
Pulse input method
Phase differential pulse (multiplication x2/4), pulse + direction inputs, or up and down pulse
inputs
Counter range
−
2,147,483,648 to 2,147,483,647 pulses
Counter functions
Counter type Ring counter or linear counter
Counter controls Gate control, counter reset, and counter preset
Latch function Two external input latches and one internal latch
Measurements Pulse rate measurement and pulse period measurement
Line driver specifications
Input voltage
EIA standard RS-422-A line
driver levels High level input volt-
age V
IT+
: 0.1 V min.
Input impedance
120 Ω ± 5% Low level input volt-
age V
IT
−
: − 0.1 V min.
Hysteresis voltage Vhys (VIT
+
−
VIT
−
): 60 mV
Maximum response
frequency Phases A and B: Single-phase 4 MHz (phase differential pulse input x4: 1 MHz), Phase Z: 1
MHz
5-V power supply
for encoder
Output voltage: 5 VDC ±5%
Output current: 500 mA max.
External input specifications
Input voltage
20.4 to 28.8 VDC (24 VDC
+20%,
−
15%)
ON voltage/ON cur-
rent 15 VDC min./3 mA min.
Input current
3.5 mA typical (24 VDC) OFF voltage/OFF
current 5.0 VDC max./1 mA max.
ON/OFF response
time 1
μ
s max./1
μ
s max.
Internal I/O com-
mon processing PNP
Dimensions 12 × 100 × 71 mm (W × H × D) Isolation method Digital isolator
Insulation resistance
20 M
Ω
min. between isolated cir-
cuits (at 100 VDC) Dielectric strength
510 VAC between isolated circuits
for 1 minute with leakage current of
5 mA max.
I/O power supply
method
Supplied from the NX bus.
20.4 to 28.8 VDC (24 VDC
+20%,
−
15%)
Current capacity of
I/O power supply ter-
minals
IOV: 0.1 A max. per terminal
IOG: 0.1 A max. per terminal
NX Unit power con-
sumption
1.05 W max.
Current consump-
tion from I/O power
supply
Unit current consumption: 30 mA
max.
Consumption from encoder 5-V
power supply: Encoder current con-
sumption
*0.28 mA
Weight 130 g max.