16 Channels digital input module 24VDC NPN

16 Channels digital input module 24VDC NPN

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Product Description

Product Attributes

Model No.: DT-121F

Packaging & Delivery

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Product Description

DT-1211F 16 Channels digital input module 24VDC/NPN/low level is valid

Module Features

The DT-1211F is a 16-channel digital input module from Sichuan ZeroPoint Automation System Co., Ltd., designed for 24VDC NPN sensors with low-level valid logic. It reliably acquires signals from dry contacts, active outputs, and 2-/3-wire digital sensors. Each channel features an LED indicator and supports configurable input signal holding time for enhanced stability. The module utilizes a high-speed redundant backplane bus and pluggable terminal blocks (0.2–1.5 mm²), enabling quick installation and maintenance. With robust design and industrial-grade isolation, the DT-1211F ensures dependable performance in demanding automation environments.

Technical Parameters

General Parameters
Current Consumption	60mA@5VDC
Field Power	19.2~28.8VDC (Nominal: 24VDC)
Wirring Diameter	Min.0.2mm²(AWG24) Max.1.5mm²(AWG16)
Terminal Pluggable	Support
Backplane Bus	Double bus redundancy
Installation	35mm DIN-Rail
Dimension	1191480mm
Product Certification	CE Certification
Input Parameters
Number of Channels	16 channels input
Indicator	16 channel indicators
Input Characteristics	IEC 61131 ，Type 3
Signal “0”	-5~30VDC (reference potential FV+)
Signal “1”	-30~-11VDC (reference potential FV+)
Minimum Voltage	-30VDC
Maximum Voltage	30VDC
Input Delay	OFF to ON: Max.500μs ON to OFF: Max.500μs
Environment Parameters
Horizontal Installation Operating Temperature	-35℃~60℃
Vertical Installation Operating Temperature	-35℃~50℃
Storage Temperature	-40℃~85℃
Environment Humidity	5%~95%RH (No condensation)
Installation Altitude	<2000m
Pollution Degree	Ⅱ
Protection Grade	IP20
Mechanical Properties	Comply with IEC60068-2-6, IEC6008-2-27
Insulation Withstand	Comply with IEC61131-2
EMC Performance	Comply with IEC61131-2, IEC61000-4 (ESD: Contact discharge ±6kV, Performance level A; Air discharge±8kV, Performance level A SURGE: Common mode ±2kV, Performance level A EFT: ±2kV, Performance level A)

Application scenarios:

FQA

Q：What types of sensors is the DT-1211F module compatible with, and how is its input logic defined?

A：The DT-1211F is designed for NPN sensors, featuring 16 digital input channels where a low-level signal (0V) is considered active (Low-Level Active). It supports dry contacts or active outputs and works with both 2-wire and 3-wire digital sensors.

Q：Does the DT-1211F offer signal stability and status visibility?

A：Yes. It features 16 independent LED indicators—one per channel—for real-time input status visualization, and includes a configurable input signal holding function to reliably capture valid signals even during transient fluctuations.

Q：Is the DT-1211F easy to install and maintain?

A：Yes. Built on a high-speed redundant backplane bus, the module features pluggable terminal blocks for tool-free installation and replacement. Terminals support wire sizes from 0.2 to 1.5 mm² (AWG 24–16), simplifying field wiring and maintenance.

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.