Hitachi EH-150 manual Error D e t e c t i o n P r o c e s s i n g

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8. Error Deception Processing

8 . E r r o r D e t e c t i o n P r o c e s s i n g

8 . 1 M 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 r

(1)Interlock

If temperate conversion data is over the measuring range or current terminal wiring is disconnected, the temperature conversion data becomes H7FFF.

After this data is read, it is necessary to make a program externally for the treatment for an error. Example of an error detection program

	WM000	=	H0000
	M0000	=	WX000 == H7FFF
	M0001	=	WX001 == H7FFF
	M0002	=	WX002 == H7FFF
	M0003	=	WX003 == H7FFF
	M0008	=	WM000 <> H0000
M0008	Xa		Yb
M0008	Xa
Yb

The program checks for error data.

When one error data is found, M8 is turned on.

For error data, Yb is turned on.

Xa is for reset.

Please take a proper countermeasure by using the coil Yb at error detection (M8 ON). Set the numbers of the sections “a” and “b” corresponding to the actual system.

8-1

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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 SpecificationSpecification list Terminal layout and internal circuit Block Diagram Internal Block DiagramExternal Wiring External WiringTemperature rage setting SettingSetting of temperature range Setting switchG u r e 7 O l l e c t i o n o f T e m p e r a t e D a t aI / O a l l o c a t i o n 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 DuctsV i c e X a m p l e o f P r o g r a m m i n gX a m p l e o f P r o g r a m m i n g 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 ChannelsReference Calculation of External Wiring ResistanceAppendix

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.

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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.