16 Channels Digital Output Module 24VDC Sink Type

16 Channels Digital Output Module 24VDC Sink Type

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Product Description

Product Attributes

Model No.: CT-221F

Packaging & Delivery

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Product Description

CT-221F IO 16 Channels Digital Output Module 24VDC Sink Type

Module features

The CT-221F 16-channel digital output module by Sichuan Odot is a high-performance 24VDC sink-type (NPN-style) I/O solution engineered to reliably drive field devices such as relays, solenoid valves, and indicator lamps.

It features 16 independent digital output channels, operating with low-level active logic (output = 0V when ON), making it ideal for integration with NPN-based control architectures and standard PLC systems. Critical safety is ensured through electromagnetic isolation between the internal backplane bus and all field outputs—preventing ground loops, noise coupling, and high-voltage transients from compromising the control system.

Each channel includes a dedicated LED indicator for real-time status visibility, accelerating commissioning and troubleshooting. The module also integrates over-current protection and thermal shutdown functionality: in the event of a short circuit, overload, or excessive temperature, outputs are automatically disabled and can self-recover once conditions normalize—enhancing system resilience without manual intervention.

Proven in European packaging machinery, North American automotive assembly lines, and Southeast Asian smart irrigation systems, the CT-221F seamlessly integrates with major PLC platforms and complies with CE and industrial EMC standards.

As a robust, high-density 16-channel sink-type digital output module, the CT-221F delivers safe, stable, and maintenance-free actuation for global Industrial Automation applications.

Technical Parameters

Output Parameters
Power	Max.70mA @ 5.0VDC
Isolation	I/O to internal bus: opto-couple isolation (3KVrms)
Field Power	Nominal:24VDC, Range: 19.2～28.8VDC
VCLAMP Voltage	Nominal:24VDC, Input range:12-36VDC
Wiring	Max.: AWG 18；Min.: AWG 24
Installation	35 mm 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
Output Parameters
Channel Number	16 channel sink type output
LED Indicator	16 channel output LED indicator
Rated Current	single channel output：Max.1000mA simultaneously output：Max.500mA
Leakage Current	Max. 10uA
On Resistance	Typical value：500mΩ
Output Delay	OFF to ON: Max.100us ON to OFF: Max.150us
Protection Function	Over-temperature shut down: typical value 160℃ Overcurrent protection: typical value 1.8A Short circuit protection: supported New hardware association protection: a group of 4 channels
Load type	GENERAL USE LOADS, PILOT DUTY LOADS

Application scenarios:

FQA

Q：What is the output type and voltage of CT-221F?

A：NPN output, low-level active, 24VDC/0.5A, internal power supply.

Q：What devices can CT-221F control?

A：Indicators, relay coils, small actuators, and other low-power loads.

Q：Does CT-221F support module-level diagnostics?

A：Internal power supply module does not provide diagnostics; independent supply modules support diagnostics. ODOT Solutions

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.