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CT-121F Digital Input Module16DI 24VDC Sink Type

CT-121F：16 channel digital input/24VDC/ Sink type/The input high level is valid

Module features

◆ the module supports 16 channels digital input, supports sink input, and input voltage is 24VDC.

◆ the module can collect digital output signal of field equipment (dry contact or active output).

◆ the module can be accessed to 2-wire or 3-wire digital sensor.

◆ the internal bus and field input of the module use opto-isolator.

◆ the module supports the input signal holding function, and the holding time can be set.

◆the module carries 16 digigtal input channels with LED indicator on each channel.

◆ supports counting function, by adding counting sub-module.

◆ each input channel of the module supports a 32-bit counter with the counting frequency <200Hz.

◆ the module can set the digital signal input filtering time and the byte transmission order of the counter.

◆ each channel of the module can set the counting mode and counting direction independently.

product details

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Product Details

General Parameters
Power Consumption	Max.63mA@5.0VDC
Isolation	I/O to internal bus: opto-couple isolation (3KVrms)
Field Power	Nominal:24VDC, Range: 19.2～28.8VDC
Wiring	Max.: AWG 18 Min.: AWG 24
Installation	35mm DIN-Rail
Size	1151475mm
Weight	65g
Environment Specification
Operating Temperature of Vertical Installation	-35℃~70℃
Operating Temperature of Horizontal Installation	-35℃~60℃
Relative Humidity	5~ 95%RH (No Condensation)
Storage Temperature	-40℃~85℃
Storage Humidity	5~ 95%RH (No Condensation)
Manufacturing Test Temperature	-40℃~75℃
Ingress Protection Rating	IP20
Vibration Resistance	Comply with IEC 61131-2 and EC 60068-2-6
Impact resistance	Comply with IEC 61131-2 and IEC 60068-2-27
EMC Performance	Comply with IEC 61131-2 and IEC 61000-4
Input Parameters
Channel Number	16 channel sink input
LED Indicator	16 channel input LED indicator
Turn-on Voltage	Min.10VDC to Max.28VDC
Turn-off Voltage	Max.5VDC
Turn-on Current	Max.5mA/channel@28V
Input impedance	>7.5kΩ
Input Delay	OFF to ON: Max.3ms ON to OFF: Max.2ms
Filter Time	Default 10ms
Sample Frequency	500Hz
Counter Frequency	<200Hz
Effective pulse width for counting	2.5ms

Application

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