GCC960C102系統(tǒng)模塊
帶Pressductor?稱重傳感器的卷筒紙/條帶張力計系統(tǒng)非常可靠,且不需要日常維護。作為預(yù)防措施,應(yīng)定期對所有零件進行檢查易受機械磨損。
5.2預(yù)防性維護檢查安裝螺釘,必要時擰緊。應(yīng)檢查稱重傳感器和板之間的間隙,以確保它們不會堵塞帶有污垢,導(dǎo)致分路力通過稱重傳感器。如有必要,用壓縮空氣清潔間隙。稱重傳感器和接線盒之間的電纜可能受到損壞,應(yīng):必要時進行檢查和更換。
5.3備件
建議用戶庫存以下備件:
?一個類型和尺寸正確的稱重傳感器。
?一個帶電纜的連接器(用于PTFL 101A和PFTL 101B)?;Q性
稱重傳感器經(jīng)過工廠校準,可以直接用相同的另一個稱重傳感器進行更換
類型更換稱重傳感器后所需的唯一調(diào)整是控制裝置中的零位調(diào)整單元
6.3故障跟蹤程序
測量設(shè)備可分為四部分:
?機械安裝。
?稱重傳感器。
?接線盒和電纜。
?控制單元(參見控制單元手冊)。
故障癥狀指示故障所在的部位。
?機械安裝中的故障通常會導(dǎo)致零點不穩(wěn)定或靈敏度不正確。如果故障發(fā)生在過程中的其他因素之后,如溫度,或可以鏈接對于特定的操作,它可能源于機械裝置中的某些東西。
?稱重傳感器非常堅固,在測量方向上可承受其標稱負載的五倍。如果稱重傳感器仍然過載,其數(shù)據(jù)已經(jīng)改變,這可能是由于軋機中的事件,如卷筒紙/帶材斷裂。在過度過載時,首先發(fā)生的是零點偏移。
?布線故障可能導(dǎo)致干擾或零點不穩(wěn)定等問題。一些故障可能是由于電纜附近引起干擾。不正確的安裝,例如電纜不平衡或多端接地的屏蔽可能會導(dǎo)致零點變得不穩(wěn)定。電纜易受機械磨損,應(yīng)定期檢查。還應(yīng)檢查接線盒,尤其是如果接線盒振動
?控制單元中的故障通常會導(dǎo)致功能間歇性喪失。
這是不尋常的
控制單元導(dǎo)致穩(wěn)定性問題。連接裝置中的故障可能會影響
控制單元。有關(guān)詳細信息,請參閱控制單元手冊。
Web/strip Tensiometer Systems with Pressductor? load cells are extremely reliable and do not
require daily servicing. As a preventive measure, checks should be done periodically on all parts
subject to mechanical wear.
5.2 Preventive Maintenance
Check mounting screws and tighten if necessary.
The gaps between load cell and plates should be checked to ensure that they do not get clogged
with dirt, causing shunt force past the load cell. Clean the gaps with compressed air if necessary.
The cable between the load cell and the junction box is subjected to possible damage and should
be checked and replaced if necessary.
5.3 Spare Parts
Users are recommended to keep the following spare parts in stock:
? One load cell of correct type and size.
? One connector complete with cable (for PTFL 101A and PFTL 101B).
Interchangeability
The load cells are factory calibrated and can be replaced directly with another load cell of the same
type. The only adjustment required after load cell replacement is zero adjustment in the control
unit.
6.3 Fault Tracing Procedure
The measuring equipment can be divided into four parts:
? The mechanical installation.
? The load cell.
? The junction boxes and the cabling.
? The control unit (see the control unit manual).
The fault symptoms indicate in which part the fault lies.
? Faults in the mechanical installation often result in an unstable zero point or incorrect sensitivity.
If a fault follows something else in the process, such as temperature, or can be linked
to a particular operation, it probably originates from something in the mechanical installation.
? Load cells are extremely robust and can withstand five times their nominal load in the measuring direction. If a load cell has nevertheless been so overloaded that its data have been
altered, this is probably due to an event in the mill, such as web/strip breakage. On excessive overload the first thing that happens is that the zero point shifts.
? Problems such as interference or unstable zero point may be caused by wiring faults. Some
malfunctions may be due to the proximity of cables that cause interference. Incorrect installation, such as imbalance in a cable or screens earthed at more than one end may cause the
zero point to become unstable. Cables are subject to mechanical wear, and should be
checked regularly. The junction box should also be checked, especially if it is subject to
vibration.
? A fault in the control unit usually causes intermittent loss of a function. It is unusual for the
control unit to cause stability problems. Faults in connected units may affect the operation of
the control unit. For further details see the control unit manual.