Sulzer CA 441 Guia De Instalacion página 11

1.5.3 CA 443
Book_81307110_CA44x.indb 11 Book_81307110_CA44x.indb 11
The product is for measuring current consumption, phase deviation and voltage input for a pump or
a complete station.
If pump is operated from a frequency converter, special precautions are required.
The high electric noise level can distort electrical readings, especially phase timing readings are
sensitive to switch transients from frequency converter.
Turn off all phase related alarms and dry run detection in PC 441 and ensure PC 441 firmware ver-
sion is V.1.42 or later
Normal current transformers operate from 45-60 Hz and must be placed on mains line input to
frequency converter.
Use only mains phase (voltage) missing alarm for pump protection (blocking).
To avoid conducted electrical noise in cabinet, follow best practices and manufacturer EMC compli-
ance recommendation when installing frequency converters. Use shielded cables. Ensure mains
and motor cables are separated from signal cables in cabinet.
General precautions:
If CA 443 for P1 also is used for mains monitoring, L1, L2 and L3 voltage inputs must be connected
before pump circuit breaker.
Table 9. CA 443 ratings
Input
Voltage 30 - 300 V ac ± 5.0 V ac
0 - 5 A ± 0.1 A ac phase shift
Current
0 - 90 deg ± 1.5 deg
Table 10. Bottom side connections
# Dir.
Signal
6 ← Sensor 1
7 ← Sensor 2
8 Sensor 3
←
←
9 GND
10 ← a Sensor 4
11 ← b GND
←
12 a Sensor 5
←
13 b GND
14 ← a Sensor 6
15 ← b GND
Table 11. CA 443 LED indicators from PC 441 firmware 1.42
LED Indication Mains monitor (0 or 1)
1 Phase 1 Voltage missing
2 Phase 2 Voltage missing 3 Phase 3 Voltage missing
4 Warning Alarm wrong phase order
Alarm phase missing
Pending high voltage
Pending low voltage
Pending unbalanced voltage
Pending high freq.
Pending low freq.
Range Comment
At higher voltages use voltage
transformer
Always use current trans-
former
Description
AC voltage input L1
AC voltage input L2
AC voltage input L3
Voltage reference input
Current transformer input 1
Current transformer input 2
Current transformer input 3
Pump monitor (1-4)
Voltage missing
Voltage missing Voltage missing
Alarm phase current missing
11
CA 443
EN
05/04/2022 12:13:34 05/04/2022 12:13:34