Mitsubishi FR - S500 User Manual

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1. Electric Shock Prevention

Thank you for choosing this Mitsubishi Transistorized inverter.

This instruction manual (detailed) provides instructions for advanced use of the FR-

S500 series inverters.

Incorrect handling might cause an unexpected fault. Before using the inverter, always

read this instruction manual and the instruction manual (basic) [IB-0600210ENG]

packed with the product carefully to use the equipment to its optimum.

This section is specifically about safety matters

Do not attempt to install, operate, maintain or inspect the inverter until you have read

through this instruction manual (basic) and appended documents carefully and can

use the equipment correctly. Do not use the inverter until you have a full knowledge

of the equipment, safety information and instructions.

In this instruction manual (detailed), the safety instruction levels are classified into

"WARNING" and "CAUTION".

Assumes that incorrect handling may cause hazardous

conditions, resulting in death or severe injury.

Assumes that incorrect handling may cause hazardous

conditions, resulting in medium or slight injury, or may cause

physical damage only.

Note that even the level may lead to a serious consequence

according to conditions. Please follow the instructions of both levels because they are

important to personnel safety.

WARNING

 While power is on or when the inverter is running, do not open the front cover. You

may get an electric shock.

 Do not run the inverter with the front cover or wiring cover removed. Otherwise,

you may access the exposed high-voltage terminals or the charging part of the

circuitry and get an electric shock. Also, the inverter's ability to withstand

earthquakes will deteriorate.

 Even if power is off, do not remove the front cover except for wiring or periodic

inspection. You may access the charged inverter circuits and get an electric shock.

 Before starting wiring or inspection, check to make sure that the 3-digit LED inverter

monitor is off, wait for at least 10 minutes after the power supply has been switched

off, and check to make sure that there are no residual voltage using a tester or the

like.

 This inverter must be grounded. Grounding must conform to the requirements of

national and local safety regulations and electrical codes. (JIS, NEC section 250,

IEC 536 class 1 and other applicable standards)

 Any person who is involved in the wiring or inspection of this equipment should be

fully competent to do the work.

 Always install the inverter before wiring. Otherwise, you may get an electric shock

or be injured.

 Perform setting dial and key operations with dry hands to prevent an electric

shock.

 Do not subject the cables to scratches, excessive stress, heavy loads or pinching.

Otherwise, you may get an electric shock.

 Do not change the cooling fan while power is on. It is dangerous to change the

cooling fan while power is on.

 When you have removed the front cover, do not touch the connector above the 3-

digit monitor LED display. Otherwise, you get an electrick shock.

WARNING

CAUTION

Questions and Answers:

B
Bobby EricksonJul 29, 2025
How to solve unknown cause after every check on Mitsubishi FR - S500 Inverter?
- T
  Tamara ThomasJul 29, 2025
  Initialize the parameters (return to factory settings), then reset the required parameter values and check again.

Mitsubishi FR - S500 Specifications

General

Series	FR-S500
Protection Class	IP20
Control Method	V/f control
Overload Capacity	150% for 60 seconds
Cooling Method	Forced air cooling
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short circuit
Communication Interfaces	RS-485 (Modbus RTU)
Operating Temperature	-10°C to +50°C
Storage Temperature	-20°C to +65°C
Ambient Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000m
Weight	Varies by model