Omron NX-EC0112, Руководство пользователя

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6 Incremental Encoder Input Units
6 - 78 NX-series Position Interface Units User’s Manual (W524)
There are two types of pulse inputs: voltage input and line receiver input.
The following table shows the pulse input specifications for Units with voltage inputs (NX-EC0112,
NX-EC0122, NX-EC0212, and NX-EC0222).
 Pulse Input Timing Specifications
6-10-2 Pulse Input Specifications
Voltage Input Specifications
Item
Specifications
Phases A and B Phase Z
Input voltage 20.4 to 28.8 VDC (24 VDC
+
20%/ − 15%)
Input current 4.2 mA typical (24 VDC)
Minimum ON voltage 19.6 VDC min./3 mA min.
Maximum OFF voltage 4.0 VDC max./1 mA max.
Maximum response frequency Single-phase 500 kHz
(Phase differential pulse input, x4 multiplication: 125 kHz) 125 kHz
Timing conditions
A B C D E F G
< 0.3 μ s > 1 μ s > 2 μ s > 4 μ s > 8 μ s > 2 μ s > 4 μ s
C
B
B
A A
G
A
A
E
D
A A
E
D
A A
F F F
F
Counter Input (Phases A and B)
Input pulse duty = 50%
Counter Input Phase Z
Terminal input
Terminal input
OFF
voltage
ON
voltage
OFF
voltage
OFF
voltage
OFF
voltage
ON
voltage
ON
voltage
Relationship between Phase A and Phase B on Phase Differential Pulse Inputs
Phase A
Phase B
T
erminal inputs