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- Yokogawa
- AMN21
- Relay I/O Module Rack
- Japan
- 125 x 130 x 248 mm
- 2kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
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- 24-Hour Service
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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.
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Yokogawa AMN21 Relay I/O Module Rack
Product Overview
The Yokogawa AMN21 is a rack‐mounted relay I/O module carrier designed for the CENTUM® VP distributed control system. It provides secure mounting, power distribution, and backplane interconnects for up to 8 relay I/O cards, enabling flexible expansion of discrete control points. Built with robust steel construction and precision backplane connectors, this rack ensures reliable operation in harsh industrial environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | AMN21 |
| Function | Relay I/O Module Rack |
| Series | CENTUM VP |
| Brand | Yokogawa |
| Card Slots | 8 |
| Backplane Bus | Proprietary CENTUM VP parallel bus |
| Power Distribution | +5 V, +24 V DC rails |
| Cooling | Passive vents |
| Material | Powder-coated steel |
| Dimensions (W × H × D) | 125 × 130 × 248 mm |
| Weight | 2 kg |
| Mounting | Panel or DIN‐rail via adapter brackets |
| Operating Temperature Range | –10 °C to +55 °C |
| Storage Temperature Range | –40 °C to +85 °C |
| Certifications | CE, UL, cULus |
Applications
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Discrete Control: Houses relay output and input cards for machine start/stop, alarms, and interlocks.
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Safety Interlocks: Centralizes safety relay I/O for emergency shutdown (ESD) loops.
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Batch Sequencing: Provides high‐density discrete outputs for valve and motor sequencing.
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Building Management: Interfaces with door contacts, pumps, and lighting relays in facility automation.
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OEM Panels: Integrates into custom control panels requiring modular discrete I/O.
Advantages
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High Slot Count: Eight card slots maximize I/O density in compact spaces.
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Rugged Construction: Steel chassis and secure card guides resist vibration and shock.
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Simple Serviceability: Removable front bezel and keyed backplane connectors allow tool‐free card swaps.
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Integrated Power Rails: Built‐in +5 V and +24 V distribution eliminates external wiring.
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Versatile Mounting: Supports panel and DIN‐rail installation to suit varied control cabinet layouts.
Brand
Yokogawa is a global leader in measurement, control, and automation, providing high‐integrity solutions such as the CENTUM VP series for critical industrial processes.
Related Models in the CENTUM VP I/O Family
| Model | Function | Slots | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| AMN21 | Relay I/O Module Rack | 8 | 125 × 130 × 248 | 2.00 |
| AMN22 | Analog Input Module Rack | 8 | 125 × 130 × 248 | 2.10 |
| AMN23 | Analog Output Module Rack | 8 | 125 × 130 × 248 | 2.05 |
| AMN24 | Digital Input Module Rack | 8 | 125 × 130 × 248 | 1.95 |
| AMN25 | Mixed I/O Module Rack | 8 | 125 × 130 × 248 | 2.15 |
Popular Yokogawa Modules
| Model | Module Type | Number of Channels | Signal Type / Range | Resolution / Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|
| AMM22M | Analog Input Module | 16 Channels | 4–20 mA, 1–5 V | 16-bit, ±0.1% F.S. | 130 × 115 × 30 | 0.30 |
| AMM22C | Analog Input Module | 16 Channels | 4–20 mA, 1–5 V | 16-bit, ±0.1% F.S. | 130 × 115 × 30 | 0.30 |
| ADV151-P60 | Analog Output Module | 8 Channels | 4–20 mA | 14-bit, ±0.2% F.S. | 130 × 100 × 30 | 0.25 |
| ADV161-P50 | Analog Output Module | 8 Channels | 1–5 V, 4–20 mA (switchable) | 14-bit, ±0.1% F.S. | 130 × 100 × 30 | 0.28 |
| ADV159-P01 | Analog Output Module | 8 Channels | 0–10 V, 4–20 mA | 14-bit, ±0.2% F.S. | 130 × 100 × 30 | 0.27 |
Frequently Asked Questions (FAQ)
Q1: How many I/O cards can the AMN21 rack hold?
A1: It accommodates up to eight plug‐in I/O cards.
Q2: What power rails are provided by the rack?
A2: Integrated +5 V and +24 V DC power distribution rails for all slots.
Q3: What are the rack’s dimensions and weight?
A3: 125 × 130 × 248 mm; weight approximately 2 kg.
Q4: Which mounting options are supported?
A4: Panel-mount via brackets or direct DIN-rail mounting with adapter.
Q5: What operating temperature range is supported?
A5: –10 °C to +55 °C for reliable industrial performance.
Q6: Does the rack include cooling fans?
A6: No active fans; passive vent slots provide natural convection.
Q7: Can I hot-swap I/O cards?
A7: Yes, cards can be inserted or removed with power applied, thanks to keyed connectors.
Q8: What backplane bus does it use?
A8: Proprietary CENTUM VP 32-bit parallel bus for high-speed data exchange.
Q9: Is the chassis certified?
A9: Yes, it carries CE, UL, and RoHS approvals.
Q10: Which control systems is this rack compatible with?
A10: Designed for Yokogawa CENTUM VP and related modular automation platforms.
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.