Communication Interfaces: Setting And Function; Application And Function Of Ssm Relay - Wilo Stratos MAXO Notice De Montage

10 Communication interfaces:
Setting and function
10.1 Application and function of SSM
relay
Installation and operating instructions Wilo-Stratos MAXO/-D/-Z

Communication interfaces: Setting and function

Menu "Types of DP housing"
The selection of the hydraulic position at which the motor head is installed takes place
independent of a double pump connection.
The following selection is available in the "Types of DP housing" menu:
▪ Single pump hydraulic
▪ Double pump hydraulic I (left, with upward flow direction)
▪ Double pump hydraulic II (right, with upward flow direction)
With an existing double pump connection, the second motor head automatically ac-
cepts the complementary setting.
▪ When the variant "Double pump hydraulic I" is selected, the other motor head automat-
ically adjusts to "Double pump hydraulic II".
▪ When the variant "Single pump hydraulic" is selected, the other motor head automati-
cally adjusts to "Single pump hydraulic".
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 analogue input (AI1)
‣ Function analogue input (AI2)
‣ Setting Wilo Net
Table 28: Selection "External interfaces"
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 warnings.
▪ 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
1. "External interfaces"
2. "SSM relay function".
Possible settings:
Selection option
Only fault (factory setting)
Faults and warnings
Table 29: Function SSM relay
After confirming one of the selection options, the SSM trigger delay and SSM reset
delay are entered.
Setting
SSM trigger delay
, select
, select
Function SSM relay
SSM relay connects only in case of fault. Fault
means: The pump is not running.
SSM relay connects only in case of fault or a warn-
ing.
Range in seconds
0 s to 60 s
en
179