CT 126F 16 channels digital input 24VDC NPN

CT 126F 16 channels digital input 24VDC NPN

Get Latest Price

Min. Order:

Contact Now

Product Description

Product Attributes

Packaging & Delivery

Product Description

Product Attributes

Model No.: CT-126F

Packaging & Delivery

Download

The file is encrypted. Please fill in the following information to continue accessing it

SPS-C Series IO_20260119_11180739

Unveiling the Future- ODOT's Highlights from SPS205



Product Description

CT-126F 16 channels digital input/24VDC/NPN

Module features

The CT-126F offers 16 isolated NPN digital input channels with LED indicators, accepting low-level active signals from 2-wire or 3-wire sensors (dry contact or active output). Each channel supports configurable signal filtering, independent counting mode/direction, and a 32-bit counter (<200 Hz). With optional sub-modules, it enables field power detection and enhanced counting functionality. Input signals can be held with adjustable retention time. Requires external 24VDC for loop power. No slot occupation in I/O configuration.

Technical parameters

General Parameters
Power Consumption	Max.66mA @ 5.0VDC
Isolation	The isolation voltage between the I/O channel and the system power supply: AC500V The isolation voltage between the I/O channel and the field power supply: AC500V Isolation voltage between the I/O channel and PE: AC 500V
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℃~50℃
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 IEC 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 channels low level input
LED Indicator	16 channels input LED indicator
Input type	IEC 61131-2 Tyepe3
Turn-on Voltage	Min. 11VDC to Max. -27VDC ((Relative to 24V terminal)
Turn-off Voltage	Min. -5VDC to Max. 6VDC ((Relative to 24V terminal)
Turn-on Current	13VDC 3.820mA
Input impedance	>2.5kΩ
Input Delay	OFF to ON: Max. 2.035ms ON to OFF: Max. 1ms
Filter Time	Default 10ms
Sample Frequency	500Hz
Counter Frequency	<200Hz
Effective pulse width for counting	2.5ms

Application scenarios:

FQA

Q： What sensor types is the CT-126F compatible with, and how is its input logic defined?

A：The CT-126F features 16 digital input channels designed for NPN sensors, where a low-level signal (0V) is active. It supports dry contacts, active outputs, and both 2-wire and 3-wire digital sensors. An external 24VDC supply is required to power the field loop.

Q：Does the CT-126F support counting and field power monitoring? What are the performance specs?

A：Yes. With an optional counting sub-module, each channel provides an independent 32-bit counter (up to 200 Hz), with configurable counting mode, direction, and byte transmission order. Additionally, a field power detection sub-module enables real-time monitoring of the 24VDC loop supply status, enhancing system diagnostics.

Q：What features ensure signal reliability and ease of maintenance on the CT-126F?

A：The module features isolation between the internal bus and field inputs, plus configurable input filtering and signal holding time. Each channel includes an LED indicator for instant status visibility—ensuring stable, noise-resistant operation and simplifying troubleshooting in industrial environments.

Certifications & Quality Assurance:

ODOT Products comply with international industrial standards, including CE and RoHS, and undergo strict quality control to ensure long-term reliable operation in industrial environments.