Monitoring Of Motor Winding; Motor Protection Adjustment - Wilo HC 20.1 + EMU FA Serie Manual De Instrucciones

6.5.4.1 Monitoring of terminal room/mo-
tor compartment
6.5.4.2

Monitoring of motor winding

6.5.4.3 Leakage chamber monitoring
6.5.4.4 Monitoring of motor bearing
6.5.4.5 Sealing chamber monitoring (ex-
ternal electrode)
6.5.5

Motor protection adjustment

Installation and operating instructions Wilo Motor HC 20.1 + EMU FA, Rexa SUPRA, Rexa SOLID
Installation and electrical connection
Leakage chamber
Vibration sensor
External monitoring devices
Sealing chamber
Key: − = not available/possible, o = optional, • = as standard
All the monitoring devices fitted must always be connected!
Connect the electrodes via an evaluation relay. Relay "NIV 101/A" is recommended for
this. The threshold is 30 kOhm.
Wiring diagram
Electrode connection
DK
The system must be deactivated when the threshold is reached!
Connect the PTC sensor via an evaluation relay. Relay "CM-MSS" is recommended for
this. The threshold is preset.
PTC sensor wiring diagram
10, 11 PTC sensor connection
Triggering status of temperature limiter
When the threshold is reached, deactivation must take place. Note the additional in-
formation in the chapter on potentially explosive areas found in the appendix!
The float switch is equipped with a potential-free normally closed contact. The switch-
ing capacity can be found in the supplied connection diagram.
Wiring diagram
K20, Float switch connection
K21
When the float switch is activated, a warning must be issued or deactivation must
take place.
Connect the Pt100 sensor via an evaluation relay. Relay "DGW 2.01G" is recommended
for this. The threshold is 100 °C (212 °F).
Wiring diagram
T1, T2 Pt100 sensor connection
When the threshold is reached, deactivation must take place!
Connect the external electrode via an evaluation relay. Relay "NIV 101/A" is recommen-
ded for this. The threshold is 30 kOhm.
Once the threshold is reached, a warning must be output or the unit must be
switched off.
CAUTION
Connection of the sealing chamber control
If on reaching the threshold, there is only a warning, the pump could be irreparably
damaged by the water ingress. Deactivation of the pump is always recommended!
Note the additional information in the chapter on potentially explosive areas found
in the appendix!
Motor protection must be set depending on the selected activation type.
HC 20.1 HC 20.1 ...-E3
• •
− −
o o
en
173