Yokogawa ACM21 RS-232 Communication Module

Release time	Mar 10, 2026
Brand	Yokogawa Electric
Product Numbe	ACM21 RS-232
Country Of Origin	Japan
Dimensions	125 x 130 x 248 mm
Weight	0.14 kg
Condition	New & In Stock
Payment Methods	T/T, PayPal, Western Union
Lead Time	1-3 Working Days
Warranty	One Year
Courier partners	DHL, UPS, TNT, FedEx and EMS.

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Overview

The Yokogawa ACM21 is an RS-232 communication module designed for Yokogawa CENTUM and FA-M3 control systems. It provides reliable serial data communication between controllers and peripheral devices, ensuring efficient system integration and secure data exchange in industrial automation applications.

General Information

Part Number: ACM21

Manufacturer: Yokogawa

Brand / Country of Origin: Yokogawa / Japan

Series: ACM (Communication Modules)

Type: RS-232 Communication Module

Mounting: Panel or rack installation

Technology: Serial communication interface with built-in diagnostics and status monitoring

Power Specifications

Supply Voltage: 24 V DC

Power Consumption: ≤ 2 W

Input: Powered from system backplane

Protection: Overvoltage and reverse polarity protection

Indicators: LEDs for power, link status, and fault

Communication & Interface

Communication Protocol: RS-232 serial communication

I/O Channels: Supports single or multiple peripheral connections

Diagnostics: Link supervision, fault detection, and status reporting

Operator Interface: LED indicators

Reset Features: Supports software reset

Environmental

Operating Temperature: 0 to +55 °C

Humidity: Up to 95% RH, non-condensing

Protection Rating: IP20, suitable for industrial cabinets

Dimensions & Weight

Dimensions (L × W × H): 125 × 130 × 248 mm

Weight: ~ 0.14 kg

100% Original and Brand New !

QDo you provide technical support or installation services?

A Yes, we offertechnical supportfor installation, configuration, and troubleshooting.

QCan I return products if they don’t meet my requirements?

A Returns are accepted within30 daysif the product is unused, unopened, and in its original packaging. Return shipping costs are the buyer's responsibility.

QHow can I ensure compatibility with my existing systems?

A If unsure, please provide yoursystem details, and our support team will verify compatibility before purchase.

QAre there discounts for new wholesale customers?

A We occasionally offerpromotional discountsfor new wholesale customers. Contact us for current offers.

QCan I purchase different quantities of a product?

A Yes, we offerflexible ordering options, whether you need a single unit or a large batch.

QWhat payment methods do you accept for wholesale orders?

A We accept various methods, includingbank transfers (T/T), letters of credit (L/C), and more upon agreement.

QCan I get discounts for bulk purchases?

A Yes, we offercompetitive pricingfor bulk purchases. Contact our sales team for a custom quote.

QWhat is the minimum order quantity (MOQ)?

A The MOQ is usuallyone unit. For bulk orders, please contact us for discounts and pricing details.

QHow long does shipping take?

A Shipping times vary by location. With our16 global warehouses, we strive for fast delivery. Contact us for an estimated delivery time.

QHow can I verify the product before purchasing?

A We can provide high-resolution product images upon request, and our team can arrange warehouse photos for verification.

QDoes this product come with a warranty?

A Yes, we provide a1-year warrantyand support returns and exchanges to protect your rights.

Company Information
E-mail		[email protected]
Mobile		+8613620394314
Whatsapp		+8613620394314
WeChat		+8613620394314
Add		Room 1102, Jiuzhou Commercial Building, Siming District, Xiamen, China

Warranty Conditions

At Qunlebu Co., Ltd., we are committed to ensuring the quality of our products. Our one-year warranty provides coverage for any defects in material or workmanship, excluding damages caused by deliberate misuse.

🛡️Coverage Details:

This warranty encompasses all instances of product malfunction or failure due to inherent manufacturing flaws, with the exception of intentional damage.

📝Claim Process:

To avail of warranty services, please notify us of any quality-related issues within the warranty period. We may conduct online troubleshooting and examination as needed.

🚚Shipping Assistance:

We understand the importance of prompt service. Therefore, we cover return shipping costs for warranty-related returns within the first month of supply. Within three months of supply, we cover one-way shipping costs for warranty-related returns. After three months, the customer is responsible for shipping costs both ways.

🚫Exclusions:

Unauthorized modifications, repairs, or misuse of the product.

Normal wear and tear.

Negligence.

Extreme environmental conditions beyond product specifications.

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Prev：Yokogawa ACM12/ZCT Communication Module

Next：Yokogawa ACM22 RS-422/485 Communication Module

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