Sulzer CA 441 Guia De Instalacion página 8

1.5
1.5.1 CA 441
EN
Book_81307110_CA44x.indb 8 Book_81307110_CA44x.indb 8
The units
The product is for measuring leakage of water into non water areas of pumps.
If pump is operated from a motor drive or frequency converter, special precautions are
required.
The high electric noise level can distort electrical readings and in extension jeopardize functionality.
To avoid conducted electrical noise, follow best practices and manufacturer EMC compliance
recommendations when installing frequency converters. Use shielded cables and 50 cm separation
between power and signal cables. Ensure that the cables are also separated from each other in
cabinets.
Table 5. CA 441 ratings
Input Range
ABS mode 0 - 220 kohm
Xylem mode 0 - 10 kohm
If one module of CA 441 is used for all pumps, Sensor 1 = Pump 1, Sensor 2 = Pump 2 etc. In case
of one CA 441 module for each pump, follow the table 6 below.
Table 6. Configuration of the analogue input on CA 441 ID 1-4
# Dir. Signal
6 Sensor 1
←
7 Ref 1*
←
8 GND
←
9 Sensor 2
←
10 Ref 2*
←
11 GND
←
12 Sensor 3
←
13 Ref 3*
←
14 GND
←
15 Sensor 4
←
16 Ref 4*
←
17 GND
←
* Ref is the negative reference point - it shall be connected to ground directly,
or at pump if problems with 50 Hz / 60 Hz interference signal.
CA 441
+ -
6 7 8
Figure 4 Connection of leakage sensor
Description
Leakage sensor 1:
Oil chamber
Leakage sensor 2:
Connect chamber
Leakage sensor 3:
Motor housing
Leakage sensor 4:
Not used
+ -
6 7 8
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CA 441
05/04/2022 12:13:24 05/04/2022 12:13:24