Hitachi EH-150 manual External Wiring

Page 18

5. External Wiring

5. External Wiring

5.1 Resistance Temperature Detective Connection Method and External Wiring

 

× b0

× A0

 

 

 

A0 to 3 : Current terminal

RTD

× B0

 

 

B0 to 3: Current terminal

× NC

b0 to 3: Voltage terminal

 

 

 

 

b1

 

 

 

 

×

 

A1

 

 

 

×

 

 

 

 

 

RTD

B1

 

 

 

×

 

NC

 

 

 

×

 

 

 

 

 

 

b2

 

 

 

External wiring(Note1)

×

×

A2

 

Use a shielded cable

 

 

 

 

×

 

NC

Make a short-circuit on

 

 

 

unused channel shown as

 

 

×

 

 

× b3

 

 

the figure.

 

 

A3

The temperature data

 

 

×

 

 

becomes H7FFF.

 

 

 

 

RTD

× B3

× NC

 

 

 

 

 

+24V

 

 

 

 

×

-24V

 

 

 

 

 

 

×

 

 

Grounding (Note2)

 

 

 

 

 

External power supply

 

24VDC

 

 

 

Figure 5.1 External Wiring

Note 1: The external wire length shall be less than 200 m for each channel. In addition, the total resistance of the wires of each channels to be connected to the current terminals (A0 to A3, B0 to B3) shall be less than 400 ohm.

Note 2: Use shielded cable and connect shielded to functional earth on the both sides or one side, which depends on the noise environment.

Note 3: The earth terminal on the power supply module and External power supply 24 VDC must be connected to the functional earth. When functional earth area doesn't do, temperature data sometimes become unstable. The data becomes unspecified.

5-1

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Contents Hitachi Programmable Controller Page Limited Warranty and Imitation of Liability Page Safety Precautions Required Prohibited V i s i o n N t e n t T e Table of contents Appendix 12-1 N t r o d u c t i o n B l e 1 R e f e r e n c e M a n u a l l i s t C u m e n tE f o r e U s e N t e n t s A n t i t yR e c a u t i o n s o n U s e E a t u r e sStructure and Nameplate Structure and Name of Each PartSpecification Specification listSpecification Terminal layout and internal circuit Block Diagram Internal Block DiagramExternal Wiring External WiringTemperature rage setting SettingSetting of temperature range Setting switchO l l e c t i o n o f T e m p e r a t e D a t a I / O a l l o c a t i o nG u r e 7 Temperature Data H7FFFB3 b2 b1 b0 Example of Calculation 1 Pt100 -50 to +400 ºC range Temperature conversion data F8CC1Pt100 -20 to +40 range Error D e t e c t i o n P r o c e s s i n g E a s u r e d T e m p e r a t u r e R a n g e o v e rError Detection Processing A m p l e o f p r o g r a mO u n t i n g M e t h o d InstallationO u n t i n g A i n t e n a n c e a n d I n s p e c t i o nPrecautions on External Wiring Figure .1 Wire Separation by Conduits or DuctsX a m p l e o f P r o g r a m m i n g X a m p l e o f P r o g r a m m i n gV i c e R003 10-3 Example of Programming 2 Offset adjustment Offset error Temperature conversion dataData Error in a Specific Channel TroubleshootingAllocation Error 41 is indicated in CPU Data Error in All ChannelsCalculation of External Wiring Resistance AppendixReference

EH-150 specifications

The Hitachi EH-150 is a robust and versatile hydraulic excavator, designed to meet the demands of various construction and mining environments. Known for its reliability and advanced technology, the EH-150 is a favorite among contractors looking for efficiency and performance.

One of the standout features of the Hitachi EH-150 is its powerful engine. It is equipped with a fuel-efficient diesel engine that provides ample horsepower for heavy-duty tasks while maintaining lower emissions. This not only ensures compliance with environmental regulations but also contributes to reduced operating costs over time.

The hydraulic system of the EH-150 is engineered for optimal performance. It utilizes advanced hydraulic technologies that allow for precise control and enhanced responsiveness. The system is designed to minimize energy loss, ensuring that more power generated by the engine is converted into effective digging and lifting capabilities. This feature significantly improves productivity on-site.

The excavator boasts a spacious and comfortable cab that enhances operator ergonomics. It includes adjustable seating, air conditioning, and large windows that provide excellent visibility, enabling operators to work efficiently and safely. The user-friendly controls are intuitively laid out, allowing for easy operation and reducing downtime caused by operator fatigue.

Another notable technology integrated into the Hitachi EH-150 is the machine's monitoring system. This system provides real-time data on performance metrics, fuel consumption, and maintenance needs, helping operators and managers to make informed decisions about the machine's operation. This feature not only aids in maximizing productivity but also in extending the lifespan of the equipment.

Durability is another key characteristic of the EH-150. The excavator features a sturdy track and a reinforced frame, designed to withstand the rigors of demanding jobsites. Its heavy-duty undercarriage provides stability and support, allowing it to operate effectively on uneven terrain.

In summary, the Hitachi EH-150 hydraulic excavator is a powerful, efficient, and technologically advanced machine. With its robust engine, precise hydraulic system, comfortable operator environment, and real-time monitoring capabilities, the EH-150 stands out as an exceptional choice for those in need of reliable and high-performance excavation solutions. Its durability and user-friendly features further make it a preferred option in the competitive construction and mining industries.
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