Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 97

Name
Parallel operation: OFF
Parallel operation: Parallel operation
Parallel operation: This pump head active
Parallel operation: Pump partner active
Table 27: Active influences
11 Communication interfaces: Setting and function
In the "Settings" menu
1. "External interfaces".
Possible selection:
External interface
‣ Function SSM relay
‣ Function SBM relay
‣ Function control input (DI1)
‣ Function control input (DI2)
‣ Function analog input (AI1)
‣ Function analog input (AI2)
‣ Setting Wilo Net
Table 28: Selection "External interfaces"
11.1 Application and function of SSM relay
The contact of the collective fault signal (SSM, potential-free changeover contact) can be connected to a
building automation system. The SSM relay can either switch on only in case of fault or for faults and warn-
ings.
• When the pump does not have electricity or if there is no fault, the contact between the terminals
COM (75) and OK (76) is closed. The contact is open in all other cases.
• If there is a fault, the contact between the terminals COM (75) and Fault (78) is closed. It is open in all
other cases.
In the "Settings" menu
Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10
Displayed
symbols
, select
, select
Description
Twin-head pump is set in parallel operation.
Both pumps are inactive in control mode.
Twin-head pump is set in parallel operation.
Both pumps are active in parallel in control
mode.
Twin-head pump is set in parallel operation.
This pump head is active in control mode. The
pump partner is inactive.
Twin-head pump is set in parallel operation.
The pump partner is active in control mode.
This pump head is inactive.
In the event of an error at the pump partner,
this pump head will run.
en-US
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