Dual-Channel Analog Input Processing for Versatile Applications
This analog input module series provides reliable signal conversion for distributed control systems. The Yokogawa AMN11 AMN22 offers two isolated channels, while the AMN22 expands to four channels. Both modules accept 4–20 mA current loops and 1–5 V DC voltage inputs. Each channel includes programmable filtering to reduce noise from industrial environments. The modules achieve a conversion accuracy of ±0.1% of full scale. They perform continuous self-diagnostics to detect input open-circuit or over-range conditions.
Physical Dimensions and Mounting Specifications
The AMN11 AMN22 measures 100 mm in height, 40 mm in width, and 110 mm in depth. The AMN22 shares the same height and depth but extends to 65 mm in width. Both modules weigh approximately 0.35 kg and 0.45 kg respectively. They mount securely onto a standard 35 mm DIN rail within the control cabinet. Their compact design optimizes space utilization in densely populated panels.
Interface Connectivity and Electrical Requirements
A front-facing terminal block accommodates all field wiring connections for both modules. The Yokogawa AMN11 and AMN22 draw power from the 5 V DC backplane supply. They exchange data with the host controller via a serial communication link. Each module includes LED indicators for power, channel activity, and fault status. These indicators simplify maintenance and troubleshooting tasks significantly.
Internal Circuitry and Energy Storage Elements
The PCB incorporates precision resistors, operational amplifiers, and 16-bit ADCs per channel. The AMN11 uses a 100 µF capacitor for local energy buffering. The AMN22 employs a 220 µF capacitor to support its additional channels. Both modules store calibration data in onboard EEPROM for long-term stability. Input protection diodes guard against reverse polarity and transient surges effectively.
| Parameter | Specification (AMN11) | Specification (AMN22) |
|---|---|---|
| Model | AMN11 | AMN22 |
| Type | Analog Input Module | Analog Input Module |
| Input Channels | 2 isolated | 4 isolated |
| Input Signals | 4–20 mA, 1–5 V DC | 4–20 mA, 1–5 V DC |
| Resolution | 16 bits | 16 bits |
| Accuracy | ±0.1% of full scale | ±0.1% of full scale |
| Filtering | Programmable per channel | Programmable per channel |
| Supply Voltage | 5 V DC (backplane) | 5 V DC (backplane) |
| Dimensions (H×W×D) | 100 × 40 × 110 mm | 100 × 65 × 110 mm |
| Weight | 0.35 kg | 0.45 kg |
| Operating Temperature | 0 to +55 °C | 0 to +55 °C |
| Storage Temperature | –20 to +70 °C | –20 to +70 °C |
| Interface | Serial backplane bus | Serial backplane bus |
| Field Connector | Screw terminal block | Screw terminal block |
| Energy Storage | 100 µF capacitor | 220 µF capacitor |
| Input Protection | Reverse-polarity diodes | Reverse-polarity diodes |
Installation Best Practices for Reliable Operation
Place the Yokogawa AMN11 AMN22 modules away from high-voltage power cables. Use shielded twisted-pair wiring for all analog signal connections to minimize noise. Connect the cable shield to ground at the control panel entry point. Configure the input ranges using the system software before powering up. Verify each channel reading against a precision calibrator after installation. Perform periodic accuracy checks as part of routine maintenance schedules.
Details
| Weight | 0.45 kg |
|---|---|
| Dimensions | 100 × 65 × 110 mm |
Reviews
There are no reviews yet.