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6.5.4.1
Monitoring of terminal room/mo-
tor compartment
6.5.4.2
Monitoring the 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)
28
Installation and electrical connection
Overview of possible monitoring devices:
Internal monitoring devices
Terminal room/motor compartment
Motor winding
Motor bearings
Sealing chamber
Leakage chamber
Vibration sensor
External monitoring devices
Sealing chamber
Key: − = not available/possible, o = optional, • = as standard
All monitoring devices fitted must be connected at all times!
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
PTC sensor connection
10, 11
Triggering status of temperature limiter
When the threshold is reached, deactivation must take place. Note the additional informa-
tion in the chapter on potentially explosive areas found in the appendix!
The float switch is equipped with a potential-free normally closed contact. The switching
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
Pt100 sensor connection
T1, T2
When the threshold is reached, deactivation must take place!
Connect the external electrode via an evaluation relay. Relay "NIV 101/A" is recommended
for this. The threshold is 30 kOhm.
Once the threshold is reached, a warning must be output or the unit must be switched
off.
HC 20.1
HC 20.1 ...-E3
•
•
•
•
o
o
−
−
•
•
−
−
o
o
WILO SE 2019-01
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