PTC Thermistor Thermal Protection, Anlg, Open, Motor

L100 Inverter

4–17

PTC Thermistor Thermal Protection

Motors that are equipped with a thermistor can be protected from overheating. Input terminal 5 has the unique ability to sense a thermistor voltage. When the resistance value of the thermistor connected to terminal [PTC] (5) and [L] is more than 3 k Ohms ± 10%, the inverter enters the Trip Mode, turns off the output to the motor, and indicates the trip status E35. Use this function to protect the motor from overheating

Option

Terminal

Function Name

Input

Description

Code

Symbol

State

PTC

PTC Thermistor

ANLG

When a thermistor is connected to terminals 5

Thermal Protection

and L, the inverter checks for

over-temperature

and will cause trip event and turn off output to

motor

OPEN

A disconnect of the thermistor causes a trip

event, and the inverter turns off the motor

Valid for inputs:

C05 only

Example:

Required settings:

(none)

PTC

Notes:

P24

•This function is assigned to the input terminal 5

only. If this function is assigned without connection
the thermistor, the inverter automatically enters the


Trip Mode. Be sure the thermistor is connected to
Trip Mode. Be sure the thermistor is connected to		thermistor
terminals 5 and L, and then restart.	MOTOR
	MOTOR

Operations and Monitoring

L100 specifications

The Hitachi L100 series is a versatile range of variable frequency drives (VFDs) designed to enhance performance in various industrial applications. Known for their reliability and efficiency, these drives are widely used in motors for pumps, fans, compressors, and conveyors.

One of the main features of the Hitachi L100 is its impressive control capabilities. The drive supports both scalar and vector control modes, allowing for precise speed and torque management. This flexibility ensures optimal motor performance across different load conditions. Additionally, the L100 series offers an impressive speed range, which can accommodate a wide variety of applications, from low-speed to high-speed requirements.

The L100 is equipped with built-in functionality for energy saving. By utilizing advanced control algorithms and auto-tuning features, the drive optimizes energy consumption, reducing operational costs and contributing to improved overall system efficiency. The energy-saving mode is particularly beneficial in applications where load conditions frequently change.

Another hallmark of the Hitachi L100 is its robust communication capabilities. The drive supports various communication protocols including Modbus and Ethernet, making it easy to integrate into existing control systems. This connectivity allows for real-time monitoring and diagnostics, which aids in predictive maintenance and minimizes downtime.

In terms of user-friendliness, the L100 series includes a clear, intuitive keypad that simplifies programming and operation. The drive also features a wide range of customizable parameters, enabling users to easily tailor the settings to suit specific application requirements. Additionally, the inclusion of a customizable PID controller allows users to refine process control automatically.

Safety is a priority in the design of the Hitachi L100. The drive comes with various built-in safety features such as overvoltage, overload, and short-circuit protection, ensuring reliable operation in challenging environments. Furthermore, it complies with global safety standards, making it suitable for international applications.

Lastly, the L100's compact design ensures easy installation and minimizes the space required in control cabinets. This is especially advantageous in facilities where space is at a premium. Overall, the Hitachi L100 series represents a combination of advanced technology, user-friendly features, and reliable performance, making it a popular choice for industrial automation solutions.

Hitachi L100 instruction manual PTC Thermistor Thermal Protection, Anlg, Open, Motor

Models: L100