Wilo Flumen OPTI-TR 20-1 Instrucciones De Instalación Y Funcionamiento página 299

Motor compartment/sealing chamber*
Motor winding**
External monitoring devices
Sealing chamber
6.5.4.1 Monitoring of motor compart-
ment
6.5.4.2 Motor compartment/sealing
chamber monitoring
6.5.4.3 Monitoring of motor winding
Installation and operating instructions Wilo-Flumen OPTI-TR 20-1, 28-1, 30-1, 40-1 Wilo-Flumen EXCEL-TRE 20, 30, 40
Installation and electrical connection
− − −
• • •
o o o
Legend
− = not available/possible, o = optional, • = standard
* In the Ex version, this monitoring is omitted and not substituted!
** A temperature limiter is fitted as standard. The Ex version as per ATEX also features
an installed temperature controller and limiter.
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 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!
With bimetallic strips
Directly connect bimetallic strips to the switchgear or via an evaluation relay.
Connection values: max. 250 V (AC), 2.5 A, cos φ = 1
Wiring diagram for bimetallic strip
Temperature limiter
20, 21 Bimetallic strip connection
Temperature controller and limiter
High temperature connection
21
Centre terminal
20
Low temperature connection
22
With PTC sensor
Connect the PTC sensor via an evaluation relay. Relay "CM-MSS" is recommended for
this. The threshold has been preset.
PTC sensor wiring diagram
Temperature limiter
10, 11 PTC sensor connection
Temperature controller and limiter
High temperature connection
11
Centre terminal
10
12 Low temperature connection
o o o
• • •
o o o
en
o
•
o
299