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Huawei EH1D200CMU00 Centralized Monitoring Unit

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EH1D200CMU00 Hardware Description

Introduction

The EH1D200CMU00 can be installed in:

Functions

The EH1D200CMU00 consists of the following modules:

  • Device management module: sends interface control signals for device management.
  • Backplane interface module: provides management channels for power modules, fan modules, and communication channels between the active and standby EH1D200CMU00 cards.

The EH1D200CMU00 manages power modules and fan modules in a chassis. The EH1D200CMU00 is hot swappable. Two EH1D200CMU00 cards can be installed in a chassis to work in active/standby mode.

Fan module management

The EH1D200CMU00 provides the following fan module management functions:

  • Fan module presence detection
  • Fan module registration management
  • Fan speed monitoring
  • Fan speed control
  • Management and report of fan module alarms
  • Query of fan module electronic labels

The EH1D200CMU00 supports real-time fan module presence detection. Fan modules in the chassis register with the EH1D200CMU00. After they register, the EH1D200CMU00 obtains electronic labels of the fan modules and saves the electronic labels for users to query. Meanwhile, the EH1D200CMU00 monitors the speed and alarms of the fan modules in real time.

When detecting an alarm about a fan module, the EH1D200CMU00 reports the alarm to the MPU. When the alarm is cleared, the EH1D200CMU00 reports alarm clearance to the MPU.

When the EH1D200CMU00 receives a fan speed adjustment instruction from the MPU, it delivers the instruction to the fan modules. The fan modules then adjust their speed according to the instruction. If a chassis has no EH1D200CMU00 installed, fans run at full speed.

Power module management
The EH1D200CMU00 manages power modules in either of the following ways:
  • Uses the RS485 bus to provide the following functions:
    • Power module presence detection
    • Power module registration management
    • Power module shutdown
    • Voltage and current monitoring
    • Management and report of power module alarms
    • Query of power module electronic labels
  • Uses the I2C bus to provide the following functions:
    • Power module presence detection
    • Power module registration management
    • Management and report of power module alarms
    • Query of power module electronic labels

Only 1600 W DC power modules are managed using the I2C bus, and all the other power modules are managed using the RS485 bus.

The EH1D200CMU00 supports real-time power module presence detection. Power modules in a chassis register with the EH1D200CMU00. After they register, the EH1D200CMU00 obtains electronic labels of the power modules and saves the electronic labels for users to query. Then the power modules are managed using the RS485 bus or I2C bus:
  • Using the RS485 bus:

    The EH1D200CMU00 queries the current and voltage of power modules in real-time.

    When detecting an alarm about a power module, the EH1D200CMU00 sends the alarm to the MPU. When the alarm is cleared, the EH1D200CMU00 reports alarm clearance to the MPU.

    When the switch is working in deep energy saving mode, the EH1D200CMU00 automatically shuts down redundant power modules to save power. You can set the deep energy saving mode using the set power manage mode command.

  • Using the I2C bus:

    When detecting an alarm about a power module, the EH1D200CMU00 sends the alarm to the MPU. When the alarm is cleared, the EH1D200CMU00 reports alarm clearance to the MPU.

 Specifications of the EH1D200CMU00

Item

Description

Physical specifications
  • Dimensions (H x W x D): 19.8 mm x 112.9 mm x 412.7 mm (0.78 in. x 4.44 in. x 16.25 in.)
  • Weight: 0.22 kg (0.49 lb)
  • Maximum power consumption: 1 W

Return and Exchange Policy

Thank you for choosing Huatelecom! We value your trust and strive to provide high-quality products and exceptional service. Below is our comprehensive return and exchange policy to ensure your rights are protected.

1. Return Policy

  • Eligibility for Returns (Quality Issues Only):
    If the product has quality defects that affect its normal usage, you are eligible to apply for a return within 7 calendar days of receiving the product. The following conditions must be met:

    1. The product must be unused, with all original packaging, accessories, and manuals intact.
    2. A valid proof of purchase (order number, invoice, etc.) must be provided.
    3. Clear evidence of the defect, such as photos or videos, must be submitted for verification.

  • Shipping Costs for Returns:
    If the return is due to quality issues, Huatelecom will cover the international shipping costs for returning the product.

  • Refund Processing:
    Once the returned product is received and inspected, the refund will be processed within 7 business days. The refund will be issued through the original payment method, and processing times may vary depending on your payment provider.

2. Exchange Policy

  • Eligibility for Exchanges (Quality Issues Only):
    You may request an exchange if the product develops a quality issue within 15 calendar days of receipt. The conditions for eligibility are:

    1. The product must be returned with all original packaging, accessories, and manuals.
    2. Proof of purchase and evidence of the defect must be provided.

  • Shipping Costs for Exchanges:
    Huatelecom will bear the international shipping costs for the exchange.

  • Exchange Process:
    Upon receiving the defective product, we will inspect it and send a replacement product within 7 business days.

3. Warranty Service

  • Coverage During the Warranty Period:
    For products within the warranty period, if quality issues arise, we will provide a replacement free of charge with your next order. No additional shipping costs will be incurred for the replacement.

  • Out-of-Warranty Repairs:
    For products outside the warranty period, repairs can be arranged. However, customers will need to cover theround-trip international shipping costs for sending the product to us and receiving it back after repair.

4. Damages or Loss During Shipping

  • For Customers Who Purchased Shipping Insurance:
    If the product is damaged or lost during shipping, the insurance company will compensate for the loss. Customers must:

    1. Submit a compensation claim within 15 calendar days of the order being shipped.
    2. Provide required documentation, such as photos of the damaged packaging, damaged product, or proof of non-delivery.
    3. Huatelecom will assist in the claim process to ensure timely resolution.

  • For Customers Without Shipping Insurance:
    If you choose not to purchase shipping insurance, Huatelecom will not be liable for any damages or losses incurred during transit.

5. Application Process for Returns, Exchanges, or Claims

  1. For further assistance, please reach out to us:

    • Email: sales@huatelecom.com
    • Phone: +852 44652638
    • Business Hours: Monday to Friday, 9:00 AM - 6:00 PM (GMT+8)
      Provide your order number, issue description, and supporting evidence (photos, videos, etc.).

  2. Request Review:
    Our team will review your application within 1-3 business days and notify you of the outcome.

  3. Return or Exchange Process:

    • If approved, you will receive instructions on how to return the product or proceed with the exchange.
    • For insurance claims, we will assist in coordinating with the insurance company.

  4. Refund or Replacement:
    Once the product is received and inspected, we will process your refund, exchange, or warranty claim promptly.

6. Important Notes

  • Timeframes:

    • Returns must be initiated within 7 days of receipt.
    • Exchanges must be requested within 15 days of receipt.
    • Warranty replacements depend on the warranty terms for the specific product.

  • Condition of Returned Products:
    Products must be returned in their original condition with all accessories and packaging intact. Damaged, altered, or incomplete items may not qualify for returns or exchanges.

  • Shipping Insurance:
    We highly recommend purchasing shipping insurance to protect against potential damages or losses during transit.

  • Non-Eligible Returns/Exchanges:

    • Products with intentional damage or misuse.
    • Issues reported beyond the specified timeframes.
    • Non-Huatelecom products or items purchased from unauthorized channels.

At Huatelecom, your satisfaction is our top priority. Thank you for trusting us with your business!