3HHE025541R0101系統(tǒng)控制器,PCD231B使用速度
故障癥狀措施
噪音信號-檢查電纜屏蔽是否接地根據(jù)電纜圖。
-靠近有噪音的電纜可能會造成干擾問題。零點不穩(wěn)定-檢查電纜屏蔽層是否未連接兩端。
-檢查稱重傳感器和電子設(shè)備之間的電纜有對角線對，一對用于信號電路和勵磁電路的一個par，見圖2-2。
-如果安裝了接線盒，則檢查稱重傳感器接頭之間的信號和稱重傳感器激勵接線盒和電子設(shè)備在單獨的電纜中布線。
3HHE025541R0101系統(tǒng)控制器-檢查是否安裝了兩個或更多IP 20裝置在同一個柜子里彼此靠近已同步（用于同步裝置，見電纜圖和第2.4.1.3節(jié)同步）。
顯示器和LED指示燈未點亮如果操作員面板顯示屏未點亮上的“電源”和“狀態(tài)”指示操作員面板處于“關(guān)閉”狀態(tài)，檢查以下各項：
-檢查電纜是否正確連接到電子設(shè)備電源。
-檢查電源是否連接到電子設(shè)備正確。
-檢查電源開關(guān)是否“ON”（在IP 65版本（NEMA 4）外殼）。
-第6.8.1.3節(jié)描述了進一步的試驗電源錯誤。
Fault symptom Measures
Noisy signals
- Check that cable shields are connected to earth
according to cable diagram.
- Proximity to noisy cables can cause interference
problems.
Unstable zero point
- Check that cable screens are not connected in
both ends.
- Check that cable between load cell and electronic
has diagonal pairs, one pair for signal circuit and
one par for excitation circuit, see Figure 2-2.
- Check, if a junction box is installed, that load cell
signal and load cell excitation between junction
box and electronics are routed in separate cables.
- Check, if two or more IP 20 units are mounted
close to each other in the same cabinet, that they
are synchronized (cable for synchronizing the
units, see cable diagram and Section 2.4.1.3
Synchronization).
Display and LED indictors are
not illuminated
If the Operator panel display is not illuminated and
the “Power” and “Status” indications on the
Operator Panel are “OFF”, check the following:
- Check that the cables are correctly connected to
the electronics power supply.
- Check that the power supply connected to the
electronics is correct.
- Check that the power switch is “ON” (inside the
IP 65-version (NEMA 4) enclosure).
- Further tests are described in Section 6.8.1.3
Supply Error.
