Proface LT4300M - 5.7 Modular HMI + Control" - Manual (Page 133)

LT-4201TM/4301TM Hardware Manual
133
The table describes the characteristics of the High-speed Counter and Pulse Catch inputs:
Characteristic Value
Rated current Voltage 24 Vdc
Current 7.83 mA
Inrush values Voltage 30 Vdc
Current 9.99 mA
Input impedance 3.2 k Ω
Input type Sink/Source
Rated voltage 24 Vdc
Maximum Allowable Voltage 28.8 Vdc
Input limit values ON Voltage 15 Vdc or more
OFF Voltage 5 Vdc or less
ON Current 5 mA or more
OFF Current 1.5 mA or less
Isolation Method Photo coupler Isolation
Between internal
logic 500 Vdc
Filtering None, 4 μs, 40 μs
IEC61131-2 edition 3 type Type 1
Compatibility Supports 2 wire and 3 wire sensors
Cable Type Shielded
Length Maximum 10 m (33 ft)
Terminal blocks Type: 3.5 mm (0.137 in.) pitch
Terminal blocks are removable
Maximum frequency  100 kHz is the maximum frequency for single-phase
 50 kHz is the maximum frequency for 2 phase
 Duty Rate: 45...55%
Phase Counting Mode  Single-phase
 2 Phase x2
 2 Phase x4
 2 Phase x2 Reverse
 2 Phase x4 Reverse
Response time Marker 1 ms
Preload 1 ms
Prestrobe 1 ms
Synchronize output 2 ms
Min. Pulse Width (Pulse Input) Counter Pulse Catch Input signal ON
width
Input paralleling No