ProductPRODUCT
Featured products
Contact Us
- Yokogawa
- AAI835-H50/K4A00
- Analog I/O Module
- Japan
- 100 mm (W) × 130 mm (H) × 28 mm (D)
- 0.22kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 72
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| sales@plc-automations.com | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Product Overview: AAI835‑H50/K4A00
Product Parameters
| Parameter | Specification |
|---|---|
| Power Supply | 24 V DC, typical current draw: 350 mA; maximum: 400 mA |
| Input Signal | 4 x isolated 4–20 mA analog input channels |
| Output Signal | 4 x isolated 4–20 mA analog output channels |
| Isolation Voltage | 500 V AC isolation between inputs, outputs, and system ground |
| Input Resistance (ON) | Approx. 250 Ω at 20 mA |
| Output Load Capacity | Up to 600 Ω at full output (20 mA) |
| Accuracy | Inputs: ±20 µA; Outputs: ±60 µA |
| Data Refresh Rate | Approximately 12 ms |
| Temperature Drift | ±20 µA per 10 °C change |
| Connection Method | K4 interface for modular rack or cable system |
| Dimensions | 100 mm (W) × 130 mm (H) × 28 mm (D) |
| Weight (kg) | 0.22 kg |
Product Introduction
The AAI835‑H50/K4A00 is a precision four‑channel analog I/O module tailored for distributed control and fieldbus systems. Built for robust signal handling, this module offers 4–20 mA isolated input and output in each channel, combined with reliable 500 V electrical isolation. Compact and lightweight, it connects through the K4 modular interface for seamless integration into control racks or wiring looms. Ideal where accuracy, safety, and modularity matter.
Product Applications
-
Distributed control systems with modular rack backplanes
-
Loop-powered transmitter signal interfacing in process plants
-
Analog I/O expansion for automation panels or control clusters
-
Retrofits where compact isolation is essential
-
Integration into communication-based infrastructure using standard channel modules
Product Advantages
-
Isolated safety – 500 V AC isolation safeguards against ground loops and interference.
-
Compact & light – Weighing just 0.22 kg and slim rack-compatible profile.
-
Fast read‑write – 12 ms data turnaround ensures responsive signal exchange.
-
Accurate & reliable – µA-level errors and limited temperature drift maintain signal fidelity.
-
Modular integration – K4 interface simplifies installation, servicing, and system expandability.
Brand & Series
-
Brand: A trusted developer of rugged, industrial-grade I/O and display instrumentation.
-
Series: Part of the AAI835 modular analog I/O family, with the “H50” indicating four-channel analog I/O and “K4A00” denoting the K4 interface type.
Related and Popular Models
A. Same Series / Related Variants (AAI835 Four-Channel I/O)
| Model | Signal Type | Interface / Feature | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| AAI835‑H50/13S00 | 4–20 mA I/O | Pressure-clamp terminal connection | 100 × 130 × 30 | 0.30 |
| AAI835‑S50/K4A00 | 4–20 mA I/O | K4 interface without HART functionality | 100 × 130 × 28 | 0.20 |
| AAI835‑H53/K4A00 | 8–16 channels | Rack-mounted, multiple analog I/O | 150 × 130 × 28 | 0.50 |
| AAI835‑H50 | 4–20 mA I/O | Standard version with basic interface | 100 × 130 × 28 | 0.22 |
| AAI835‑S50/S3 | Universal I/O | Voltage or current with bar graphs | 100 × 130 × 30 | 0.35 |
B. Other Popular Models from Same Brand (General I/O and Display Modules)
| Model | Key Feature | Application Range | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| AAI841‑S50 | 8-ch analog input/output | Versatile signaling and control | 120 × 130 × 35 | 0.40 |
| AAI135‑H50/13S00 | 16-ch I/O module | Higher channel density for control | 200 × 130 × 45 | 0.45 |
| AAI143‑S50 | Input-only 16 channels | Bulk analog signal gathering | 200 × 130 × 45 | 0.50 |
| AAA990‑C05 | Display panel with alarms | Visual control and warnings | 96 × 48 × 105 | 0.60 |
| ABX770‑C30 | Touchscreen interface | Process visualization and control | 144 × 144 × 70 | 1.00 |
Frequently Asked Questions (QA Format)
-
Q: What kind of signals does AAI835‑H50/K4A00 handle?
A: It processes four isolated 4–20 mA analog inputs and outputs. -
Q: Does it offer electrical isolation?
A: Yes, each channel is isolated with up to 500 V AC between I/O and system. -
Q: How fast does it update data?
A: Data is refreshed every approximately 12 ms. -
Q: What level of accuracy does this module maintain?
A: Input accuracy is ±20 µA and output accuracy is ±60 µA. -
Q: What is the typical temperature drift?
A: Drift is about ±20 µA per 10 °C change. -
Q: How does it connect to the system?
A: It uses a K4 modular backplane interface for clean, quick installation. -
Q: What are its dimensions?
A: The module measures 100 mm wide, 130 mm high, and 28 mm deep. -
Q: How heavy is it?
A: It weighs roughly 0.22 kg. -
Q: Is it compact enough for dense racks?
A: Definitely. Its slim form and light weight make it ideal for tight installations. -
Q: What does “H50/K4A00” denote?
A: “H50” indicates the four-channel analog I/O type; “K4A00” refers to the K4 interface standard.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.