Monitoring equipment connection
- Refer to the attached connection diagram for more precise details regarding the version.
- The individual wires are designated according to the connection diagram. Do not cut the wires! There is no additional assignment between the wiring diagram and connection diagram.
DANGER
Risk of explosion due to incorrect connection!
If the monitoring devices are not connected correctly, there is a risk of fatal injury due to explosion in potentially explosive areas! Connection must always be carried out by a qualified electrician. If used in potentially explosive areas:
- Connect the thermal motor monitoring via an evaluation relay!
- Deactivation by the temperature limiter must be conducted with reactivation lock! It must only be possible to restart the unit when the unlock key has been actuated by hand!
- Connect the external electrode (e.g. sealing chamber control) via an evaluation relay with an intrinsically safe circuit!
- Note the additional information in the chapter on potentially explosive areas found in the appendix of these installation and operating instructions!
Overview of possible monitoring devices for submersible mixers without Ex rating:
OPTI-TR 20-1 ... | EXCEL-TRE 20 ... | OPTI-TR 22 ... | OPTI-TR 28-1 ... | OPTI-TR 30-1 ... | EXCEL-TRE 30 ... | OPTI-TR 40-1 ... | EXCEL-TRE 40 ... | |
|---|---|---|---|---|---|---|---|---|
Motor compartment | o | o | − | o | − | − | − | − |
Motor compartment/sealing chamber | − | − | o | − | o | o | o | o |
Sealing chamber (external pencil electrode) | o | o | o | o | o | o | o | o |
Motor winding: Temperature limiter | • | • | • | • | • | • | • | • |
Motor winding: Temperature controller and limiter | o | o | o | o | o | o | o | o |
Key
− = not possible, o = optional, • = standard