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The 6ES7235-0KD22-0XA0 is a 4-input/1-output analog combination expansion module (EM 235) for the SIMATIC S7-200 PLC system. It features a 12-bit conversion resolution and a 250 µs channel conversion time, allowing the unipolar or bipolar range of its 4 input channels (such as ±10V or 0-20mA) to be uniformly adjusted via bottom-mounted physical DIP switches. Its single output channel supports either a 0-10V DC voltage or a 0-20mA DC current drive.
Highly Flexible Bidirectional Hybrid Signal Conditioning
Rigid Electrical Protection and High Anti-Interference Isolation
High-Frequency Data Conversion and Microsecond-Level Fast Response
6ES7235-0KD22-0XA0 features input circuits with rigid electrical destruction limits to prevent physical damage from external high-voltage power spikes, allowing a maximum of 30 V for voltage channels and 32 mA for current channels. On the signal drive side, the module integrates 1 independent 11-bit analog output channel that simultaneously supports both -10 V to +10 V DC voltage and 0 to 20 mA DC current outputs, with a voltage output settling time of only 100 µs and a current output settling time within 2 ms.
The module specifies strict technical requirements for the impedance of connected external loads at the output terminal, where the voltage load impedance must not be lower than 5 kΩ and the current load impedance must not exceed 0.5 kΩ. In terms of power consumption, the module's internal logic draws a maximum of 30 mA from the 5 V DC backplane bus, while its analog conditioning circuitry consumes a maximum of 60 mA from the external 24 V DC supply network, maintaining a typical full-load power loss of only 2 W, which makes it a core hybrid component for managing high-frequency switching and highly reliable proportional regulation in plant control systems.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Siemens 6ES7235-0KD22-0XA0 EM 235 Analog I/O Module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Water Treatment Industry
It reads signals from pressure sensors and flow meters in water pipelines, and outputs signals to adjust water pump inverters and electric valves, achieving constant pressure water supply or automated wastewater treatment.
Plastics and Rubber Machinery
In injection molding machines, it precisely monitors the temperature sensors of the heating barrel and controls the pressure and flow rate of proportional hydraulic valves.
Metallurgy and Steel Industry
It captures infrared thermometer signals from blast furnaces or heating furnaces and outputs control signals to gas regulating valves to precisely control the furnace temperature during steel heating.
Chemical and Pharmaceutical Industry
In reactor automation, it collects pressure, temperature, and pH values inside the chemical reactor in real-time, and outputs analog signals to control the dosing speed of chemical reagent pumps.
Paper and Printing Industry
It monitors humidity sensors and steam pressure during the paper drying process, controlling the steam valve opening to ensure consistent dryness of the paper.
Cement and Building Materials Industry
In concrete batching systems, it continuously collects weight analog signals from electronic belt scales to control feeder speeds, achieving accurate proportioning of various materials.
First, this module does not support hot-swapping under power; you must ensure the entire system is completely powered off before removing the module or plugging/unplugging the side flat ribbon cable, otherwise the internal communication chips can easily be burned out.
Second, the measuring ranges of the 4 input channels are uniformly controlled by the bottom physical DIP switches, users must adjust these switches under unpowered conditions, and any unused input channels onsite must have their positive and negative terminals (e.g., A+ and A-) physically short-circuited to filter out floating spatial induced noise.
Lastly, there are rigid technical constraints on external load impedance, where the voltage load impedance at the output terminal must not be lower than 5 kΩ and the current load impedance must not exceed 0.5 kΩ, while the external 24 V DC supply network must remain stable to prevent output drops due to undervoltage or damage to the conversion chips.
The module utilizes an integrated flat ribbon cable for side-bus extension, while its housing features a 24V DC power status LED alongside hardware potentiometers for onsite gain and offset calibration. Operating with a typical power loss of 2.0 W, it serves as a core active hybrid component for continuous variable signal acquisition and proportional actuator regulation in classic automation systems.
What is the primary function of 6ES7235-0KD22-0XA0?
It is used to expand 4 analog input channels and 1 analog output channel for the S7-200 PLC control system to process continuous variable field signals.
How to install and use a product like 6ES7235-0KD22-0XA0?
Snap it onto a standard DIN rail, physically connect it to the expansion interface of the S7-200 CPU or the previous module via its built-in flat ribbon cable, then wire the external power and analog signal lines before programming in the software.
What signal types does the output channel of 6ES7235-0KD22-0XA0 support?
Its single analog output channel supports outputting either a 0 to 10 V DC voltage signal or a 0 to 20 mA DC current signal.
How to adjust the input range configuration of 6ES7235-0KD22-0XA0?
Users must configure the unified range and gain for the 4 input channels by adjusting the combination of physical DIP switches located at the bottom of the module.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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