Omron C200H-CPU21-E C200H Series PLC CPU Module

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Manufacturer: Omron
Product No.: C200H-CPU21-E
Country of origin:Japan
Product Type: PLC CPU Modules
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 260 x 160 x 140 mm
Shipping port: Xiamen
Warranty: 12 months

Description

Managing complex logic control sequences within legacy system architectures, the Omron C200H-CPU21-E functions as a high-reliability central processing unit for the classic Omron C200H PLC platform. This module features flexible execution times and dual-voltage power configuration, making it well-suited for legacy migration and direct drop-in field replacements. By incorporating built-in control input and output terminals, the C200H-CPU21-E operates independently of dedicated I/O modules for primary startup and run status signaling, maintaining system uptime across older industrial installations.

Features

Dual-Voltage Selector: Supports selectable power inputs of 100 to 120 VAC or 200 to 240 VAC.
Direct Control Interfaces: Dedicated START input (24 VDC, 10 mA) and RUN dry contact output (2 A maximum capacity).
Flexible Refreshing Methods: Programmed, cyclic, scheduled, and zero-cross I/O refreshing modes.
Memory Cassette Support: Holds up to 6,974 words of application logic and data register memory.
Battery-Backed Protection: Preserves HR bits, AR bits, CNT values, and DM data areas during input power failures.
Advanced Self-Diagnostics: Monitors CPU failures, battery levels, scan time limits, memory errors, I/O bus verification, and specialized expansion modules.

Applications

Legacy factory automation and modernization schemes.
Material handling conveyor lines and sorting systems.
Automated packaging machinery and cartoning lines.
Water treatment pumping control panels and environmental monitoring.

Technical Specifications

Specification Parameter	Technical Rating / Value
Manufacturer	Omron
Model Reference	C200H-CPU21-E
Product Series	C200H Series
Power Supply Voltage	100 to 120 VAC / 200 to 240 VAC (selectable)
Basic Instruction Execution Time	0.75 to 2.25 microseconds
Function Instruction Execution Time	34 to 724 microseconds
Memory Capacity	6,974 words (with 8K-word memory cassette)
START Input Signal	24 VDC, 10 mA (controls execution state)
RUN Output Contacts	Dry contact, Max 2 A 250 VAC (resistive), 0.5 A 250 VAC (inductive), 2 A 24 VDC
Standard Battery Lifespan	4 years at 25 degC ambient temperature
Compliance Certifications	UL Listed (File E95399), CSA Certified (File LR51460)
Country of Origin	Japan
Shipping Weight (Calculated)	2.0 kg
Package Dimensions (Calculated)	260 x 160 x 140 mm

Connections and Interfaces

Terminal Identifier	Functional / Circuit Assignment
START IN (+) / (-)	24 VDC input logic to force RUN/STOP state externally.
RUN OUT (Dry Contacts)	Internal relay contact closes when CPU completes successful initialization.
AC (L1) / (L2)	Power input connection point (100-120 VAC or 200-240 VAC).
GR / LG	System ground and line ground shield paths to prevent electrical noise.

Empirical Engineering Insights

Alternative Models & Compatibility

The C200H-CPU21-E offers extended physical I/O control options over the baseline C200H-CPU01-E, which lacks dedicated START and RUN terminals. When upgrading an existing control panel to newer Omron platforms (such as the CS1D series), logic translation is required as memory mapping structures and physical backplanes do not feature backward physical compatibility.

Application Pitfalls & Engineering Notes

Never insert or remove memory cassettes (RAM or EEPROM packs) while the backplane has active power applied. This practice risks damaging internal CMOS components and corrupting stored application firmware. Additionally, if the ambient operating temperature in the enclosure consistently exceeds 40 degC, expect the internal backup battery runtime to degrade significantly below its rated 4-year standard.

Commissioning & Wiring Tips

To protect the internal RUN output contacts from back-EMF voltage surges, always install an external surge-suppressor (RC snubber for AC, flyback diode for DC) across inductive loads such as solenoid coils or contactor coils wired to this contact interface.

Installation Guidelines

CRITICAL WARNING: Disconnect and isolate all primary power supplies before attempting to mount, wire, or adjust the CPU module. Verify that the voltage configuration jumper matches your local utility power (110 VAC vs 220 VAC) to avoid catastrophic component destruction.

Align the top hook of the C200H-CPU21-E onto the dedicated slot of the C200H base unit rack, then rotate the unit downward until the bottom latch snaps firmly into place.

Tighten the upper and lower mounting screws to 0.8 N-m torque settings to prevent vibrations from loosening the backplane bus connection.

Verify that the ground terminal is securely connected to a low-impedance earth ground to safeguard diagnostic components against high-frequency line interference.

Key Features:

#Omron C200H #PLC CPU Modules

Can I replace the memory cassette while the CPU module is running?

No. Power down the entire PLC rack before installing or removing memory cassettes. Swapping memory modules under power can damage the processor and corrupt internal registers.

What happens when the ALARM indicator light begins to blink on the CPU front panel?

A blinking ALARM indicator indicates that the backup lithium battery voltage has dropped. You must replace the battery with a fresh cell within one week to prevent data and program loss.

Does this model support expansion to remote I/O subsystems?

Yes, the processor supports Remote I/O configurations through dedicated Master and Slave link modules, allowing external remote terminal racks to map into the memory space.

Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin

Technical knowledge

$Math Operations Using OpenPLC for Industrial Automation Applications$

Omron C200H-CPU21-E C200H Series PLC CPU Module