Hardware manual

LT-4201TM/4301TM Hardware Manual
127
Digital Inputs
Digital Input Characteristics
The table describes the characteristics of the digital inputs:
High-speed Counter Input Characteristics
WARNING
UNINTENDED EQUIPMENT OPERATION
Do not exceed any of the rated
values specified in the following tables.
Failure to follow these instructions can result in death, serious injury, or
equ
ipment damage.
Characteristic Value
Rated current 5 mA
Inrush values Voltage 30 Vdc
Current 6.29 mA max.
Input impedance 4.9 kΩ
Input type Sink/Source
Rated voltage 24 Vdc
Maximum Allowable Voltage 28.8 Vdc
Input limit values ON Voltage 15 Vdc or more (15...28.8 Vdc)
OFF Voltage 5 Vdc or less (0...5 Vdc)
ON Current 2.5 mA or more
OFF Current 1.0 mA or less
Isolation Method Photocoupler Isolation
Between internal
logic
500 Vdc
Filtering 0.5 ms...30.0 ms
IEC61131-2 3 type Type 1
Compatibility Supports 2 wire and 3 wire sensors
Cable type and length Shielded: Maximum 100 m (328 ft)
Non-shielded: 50 m (164 ft)
Terminal blocks Type: 3.5 mm (0.137 in.) pitch
Terminal blocks are removable
Input paralleling No
WARNING
UNINTENDED EQUIPMENT OPERATION
Do not exceed any of the rated
values specified in the following tables.
Failure to follow these instructions can result in death, serious injury, or
equ
ipment damage.