Description
Product Description
Overview
The Yokogawa AAl835-H50 is a high-precision analog input/output module designed for reliable signal acquisition and control in industrial automation systems. It supports isolated 4-channel input and 4-channel output with current signals, providing robust performance and seamless HART digital communication. This model is ideal for process control environments where signal accuracy and isolation are critical.
Key Features
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4-channel isolated input and 4-channel isolated output
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Supports 4 to 20 mA current signals for both input and output
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Built-in HART digital communication interface for smart field device integration
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Isolated channels prevent cross-interference between signals
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Compact design with a net weight of 0.2 kg
Technical Specifications
| Specification |
Details |
| Model |
AAl835-H50 |
| Module Type |
Analog I/O Module (Current I/O) |
| Input Channels |
4-channel, isolated |
| Output Channels |
4-channel, isolated |
| Input Signal Range |
4 to 20 mA |
| Output Signal Range |
4 to 20 mA |
| Maximum Input Current |
25 mA |
| Input Resistance |
290 Ohm at 20 mA, 450 Ohm at 4 mA (Power ON) |
| Input Resistance (Power OFF) |
Greater than 500 kOhm |
| Accuracy |
Input: ±16 uA, Output: ±48 uA |
| Withstand Voltage |
Input/Output to system: 500 VAC for 1 minute, Channel to channel: 500 VAC for 1 minute |
| Interface Adapter |
KSCable Adapter ATK4A-00 included |
| Explosion Protection |
Not available (basic type) |
| Weight |
0.2 kg |
Applications
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Industrial process control systems requiring precision analog signals
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Integration with HART-enabled field instruments
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Systems needing electrically isolated multi-channel I/O for safety and accuracy
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Plant automation and monitoring solutions
FAQ
Q: Can this module communicate with HART devices?
A: Yes, the H-suffix indicates full HART digital communication compatibility.
Q: Is explosion protection included?
A: No, the 5-suffix indicates the module does not include explosion protection.
Q: What type of signals can it handle?
A: Both input and output channels are designed for 4 to 20 mA current signals with full isolation.
Q: Are channels electrically isolated?
A: Yes, each input and output channel is fully isolated to prevent interference.
Q: Can I use this module with KSCable interface adapters?
A: Yes, the module is compatible with the ATK4A-00 KSCable adapter.
