Figure 2: MAS 801
1. Pump electronic module (PEM)
2. Combined power and signal cable
3. Base unit (BU)
4. Central unit (CU)
5. Human-machine interface FOP 402
MAS 801 features include the following:
• Eight standard pump sensors
• SUBCAB
®
cables contain both signal leads and power leads.
• One central unit for maximum ten pumps
• One graphical touch panel shows information for multiple pumps.
3.5.2 FLS: float switch sensor
The float switches are leakage sensors.
The float switches are located in the junction box, and in the lower part of the stator housing
or leakage chamber.
3.5.3 Vibration in three directions
A vibration sensor that is located in the PEM measures vibration speed in three directions.
Two adjustable alarm limits can be applied for each measurement direction:
• Early warning: “B”-alarm
• Pump stop: “A”-alarm
Figure 3: Vibration directions with reference to the PEM
The definitions of X, Y and Z are the same, whether or not the pump is in a vertical or
horizontal position.
3 Product Description
P7030, P7035, P7040 Installation, Operation, and Maintenance Manual 15