3HHE025541R0101系统控制器,PCD231B使用速度
故障症状措施
噪音信号-检查电缆屏蔽是否接地根据电缆图。
-靠近有噪音的电缆可能会造成干扰问题。零点不稳定-检查电缆屏蔽层是否未连接两端。
-检查称重传感器和电子设备之间的电缆有对角线对，一对用于信号电路和励磁电路的一个par，见图2-2。
-如果安装了接线盒，则检查称重传感器接头之间的信号和称重传感器激励接线盒和电子设备在单独的电缆中布线。
3HHE025541R0101系统控制器-检查是否安装了两个或更多IP 20装置在同一个柜子里彼此靠近已同步（用于同步装置，见电缆图和第2.4.1.3节同步）。
显示器和LED指示灯未点亮如果操作员面板显示屏未点亮上的“电源”和“状态”指示操作员面板处于“关闭”状态，检查以下各项：
-检查电缆是否正确连接到电子设备电源。
-检查电源是否连接到电子设备正确。
-检查电源开关是否“ON”（在IP 65版本（NEMA 4）外壳）。
-第6.8.1.3节描述了进一步的试验电源错误。
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.
