Contents

Safety Instructions
COMPLIANCE WITH EC DIRECTIVES
CONFORMANCE WITH UL/C-UL STANDARD
CONTENTS
CHAPTER 1 INTRODUCTION
- 1-1 Model Definition
- 1-2 Parts Identification and Application
  - 1-2-1 Servo amplifier
  - 1-2-2 Servo motor
- 1-3 Basic Configuration
  - 1-3-1 Standard models
  - 1-3-2 EN Standard-, UL/C-UL Standard-compliant models
CHAPTER 2 OPERATION
- 2-1 Standard Connection Examples
  - 2-1-1 Connection with the FX-1GM
  - 2-1-2 Connection with the FX-1GP
  - 2-1-3 Connection with the FX-20GM or E-20GM
  - 2-1-4 Connection with the AD75P[] or A1SD75P[]
- 2-2 Operation
  - 2-2-1 Pre-operation checks
  - 2-2-2 Operation procedure
  - 2-2-3 Troubleshooting at start-up
  - 2-2-4 Determining the cause of a position offset
- 2-3 Display and Operation
  - 2-3-1 Display flowchart
  - 2-3-2 Status display
  - 2-3-3 Diagnostic mode
  - 2-3-4 Alarm mode
  - 2-3-5 Parameter mode
CHAPTER 3 WIRING
- 3-1 Servo Amplifier
  - 3-1-1 Terminal block
  - 3-1-2 Signal connectors
  - 3-1-3 Control I/O signals
  - 3-1-4 Interfaces
- 3-2 Servo Motor
  - 3-2-1 Connection instructions
  - 3-2-2 I/O terminals
- 3-3 Common Line
- 3-4 Grounding
- 3-5 Power Supply Circuit
- 3-6 Timing Chart at Alarm Occurrence
- 3-7 Servo Motor with Electromagnetic Brake
CHAPTER 4 INSTALLATION
- 4-1 Servo Amplifier
- 4-2 Servo Motor
CHAPTER 5 ADJUSTMETNS AND APPLICATION OPERATIONS
- 5-1 Adjustments
  - 5-1-1 Auto tuning
  - 5-1-2 Manual gain setting
- 5-2 Application Operations
  - 5-2-1 Changing the command pulse train input form
  - 5-2-2 Changing the I/O signals
  - 5-2-3 Speed control mode
  - 5-2-4 Torque limit
  - 5-2-5 Slight vibration suppression control
  - 5-2-6 Low acoustic noise mode
CHAPTER 6 OPTIONS AND AUXILIARY EQUIPMENT
- 6-1 Dedicated Options
  - 6-1-1 Regenerative brake option
  - 6-1-2 Cable connectors
  - 6-1-3 Junction terminal block
  - 6-1-4 Setup software
  - 6-1-5 RS-232C option unit (MR-C-T01)
- 6-2 Auxiliary Equipment
  - 6-2-1 Electric wires
  - 6-2-2 No-fuse breakers - fuses - magnetic contactors
  - 6-2-3 Power factor improving reactors
  - 6-2-4 Relays
  - 6-2-5 Surge absorbers
  - 6-2-6 Noise reduction techniques
  - 6-2-7 Leakage current breaker
CHAPTER 7 MAINTENANCE AND INSPECTION
CHAPTER 8 TROUBLESHOOTING
- Alarm List
CHAPTER 9 CHARACTERISTICS
- 9-1 Overload Protection Characteristics
- 9-2 Losses Generated in the Servo Amplifier
- 9-3 Electromagnetic Brake Characteristics
- 9-4 Vibration Rank
CHAPTER 10 SPECIFICATIONS
- 10-1 Standard Specifications
- 10-2 Torque Characteristics
  - 10-2-1 Standard
  - 10-2-2 Low acoustic noise mode (carrier frequency 9.0kHz)
- 10-3 Outline Drawings
  - 10-3-1 Servo amplifiers
  - 10-3-2 Servo motors
  - 10-3-3 Servo motors (in inches)
- 10-4 Servo Motor with Reduction Gear
- 10-5 Servo Motor with Special Shaft
CHAPTER 11 SELECTION
- 11-1 List of Specification Symbols
- 11-2 Position Resolution and Electronic Gear Setting
- 11-3 Servo Motor Speed and Command Pulse Frequency
- 11-4 Stopping Characteristics
- 11-5 Capacity selection method
- 11-6 Load Torque Equations
- 11-7 Load Inertia Equations
- 11-8 Zeroing Instructions
- 11-9 Selection Example
CHAPTER 12 OPTIONAL PRODUCTS
- 12-1 Servo motor with Special Flanges
  - 12-1-1 Model definition
  - 12-1-2 NEMA flange type
  - 12-1-3 NEMA flange type (in inches)
  - 12-1-4 Stepping motor intercompatibility type
  - 12-1-5 Stepping motor intercompatibility type (in inches)
- 12-2 5V Pulse Train Input Servo Amplifiers
  - 12-2-1 Model definition
  - 12-2-2 Signal connectors
  - 12-2-3 Inter faces
  - 12-2-4 Common Line
REVISIONS

Mitsubishi Electric MRC A Instruction Manual

Pages 208

Year 2000

Language(s)

of 208

Mitsubishi Electric MRC A Specification

The Mitsubishi Electric MRC A series is an advanced air conditioning solution designed to provide optimal climate control with high energy efficiency and reliability. This model incorporates state-of-the-art inverter technology, which allows for precise temperature regulation and reduced energy consumption. The unit is engineered for quiet operation, utilizing a unique fan design and noise-dampening materials to ensure minimal disturbance during use.

The MRC A series features a sophisticated filtration system that enhances indoor air quality by removing dust, allergens, and other airborne particles. Equipped with a smart sensor technology, the system intelligently adjusts airflow and temperature settings based on room occupancy and environmental conditions, optimizing comfort and efficiency. The sleek, modern design of the indoor unit blends seamlessly with various interior décors, while the compact outdoor unit facilitates flexible installation options, even in limited spaces.

Connectivity is a key feature, with built-in Wi-Fi enabling remote control and monitoring via a smartphone app, providing users with the convenience of adjusting settings from anywhere. The unit supports integration with smart home systems, allowing for voice control and automation in conjunction with other smart devices. The MRC A series is engineered for durability and ease of maintenance, featuring self-diagnostic capabilities that notify users of any operational issues, reducing downtime and maintenance costs.

With a focus on sustainability, the MRC A series uses an eco-friendly refrigerant that minimizes environmental impact. Designed to meet strict international energy standards, it is a suitable choice for residential and commercial applications seeking to reduce carbon footprints without compromising on performance. Overall, the Mitsubishi Electric MRC A series exemplifies cutting-edge technology, user convenience, and environmental responsibility in modern air conditioning solutions.

Mitsubishi Electric MRC A F.A.Q.

How do I reset the Mitsubishi Electric MRC A unit?

To reset the MRC A unit, press and hold the reset button located on the control panel for 5 seconds until you hear a beep. This will restore the unit to its factory settings.

What should I do if the MRC A unit is not cooling properly?

Check if the air filters are clean and not obstructed. Ensure that the thermostat is set to the correct temperature. Also, verify that the outdoor unit is free from debris and has adequate ventilation.

How often should I clean the air filters in the MRC A unit?

It is recommended to clean the air filters every three months. If the unit is used in a dusty environment, more frequent cleaning may be necessary.

What maintenance tasks should be performed regularly on the MRC A unit?

Regular maintenance tasks include cleaning the air filters, checking the refrigerant levels, inspecting the outdoor unit for debris, and ensuring that the electrical connections are secure.

Why does the MRC A unit make a clicking noise when starting?

A clicking noise during startup is typically normal and indicates the relay is engaging. However, if the noise persists or is unusually loud, it may require professional inspection.

How can I improve energy efficiency with my MRC A unit?

Ensure the unit is correctly sized for the space, maintain clean filters, use programmed thermostat settings, and ensure that doors and windows are well-sealed to prevent air leaks.

What should I do if the remote control for the MRC A is not working?

First, replace the batteries in the remote control. Ensure there are no obstructions between the remote and the unit. If the issue persists, try resetting the remote control.

Can I install the MRC A unit myself, or do I need a professional?

Professional installation is recommended to ensure the unit is installed correctly and to maintain warranty coverage. Professionals can also ensure that the unit is optimized for efficiency and performance.

How do I change the temperature units from Celsius to Fahrenheit on my MRC A unit?

Press and hold the mode button on the remote control for 5 seconds. This will toggle the temperature display between Celsius and Fahrenheit.

What should I check if the MRC A unit is leaking water?

Check if the drain pipe is clogged or if the unit is tilted, preventing proper drainage. Ensure that the drain pan is not damaged or overflowing.