L100 Inverter

2–15

CAUTION: Fasten the screws with the specified fastening torque (see the following table). Check for any loosening of screws. Otherwise, there is the danger of fire.

CAUTION: Remarks for using earth leakage circuit breakers in the mains supply: Frequency inverters with CE-filters (RFI-filter) and shielded (screened) motor cables have a higher leakage current toward Earth GND. Especially at the moment of switching on this can cause inadvertent tripping of earth leakage circuit breakers. Because of the rectifier on the input side of the inverter there is the possibility to stall the switch-off function through small amounts of DC current. Please observe the following:

Use only short time-invariant and pulse current-sensitive earth leakage circuit breakers with higher trigger current.

Other components should be secured with separate earth leakage circuit breakers.

Earth leakage circuit breakers in the power input wiring of an inverter are not an absolute protection against electric shock by direct touching.

CAUTION: Be sure to install a fuse in the wire for each phase of the main power supply to the inverter. Otherwise, there is the danger of fire.

CAUTION: For motor leads, earth leakage breakers and electromagnetic contactors, be sure to size these components properly (each must have the capacity for rated current and voltage). Otherwise, there is the danger of fire.

and Installation

Inverter Mounting

 

 

Terminal Dimensions and Tightening Torque

The terminal screw dimensions for all L100 inverters are listed in table below. This information is useful in sizing spade lug or ring lug connectors for wire terminations.

 

Number of

Models 002NF, 004NF, 005NF

Models 007NF–022NF,

 

037LF, 004HF–075HF

 

 

 

Connector

Screw

 

 

 

 

Screw

 

Screw

 

 

Terminals

Width (mm)

Width(mm)

 

 

Diameter

Diameter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power Terminals

12

M3.5

7.1

M4

9

 

 

 

 

 

 

Control Signal

15

M2

M2

 

 

 

 

 

 

Alarm Signal

3

M3

M3

 

 

 

 

 

 

Ground Terminals

2

M4

M4

 

 

 

 

 

 

When connecting wiring, use the tightening torque listed in the following table to safely attach wiring to the connectors.

 

Screw

Tightening Torque

Screw

Tightening Torque

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M2

0.2 N•m (max. 0.25 N•m)

M3.5

0.8 N•m (max. 0.9 N•m)

 

 

 

 

 

 

 

 

M3

0.5 N•m (max. 0.6 N•m)

M4

1.2 N•m (max. 1.3 N•m)

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 46
Image 46
Hitachi L100 instruction manual Terminal Dimensions and Tightening Torque, Width mm, Screw Tightening Torque

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.