Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 98

en-US
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
SSM reset delay
Table 30: Trigger and reset delay
• Triggering of the SSM signal after occurrence of a fault or a warning is delayed.
• Resetting of the SSM signal after occurrence of a fault or a warning is delayed.
Trigger delays are used so that processes are not influenced by very short fault or warning messages.
If a fault or a warning is fixed before the end of the set time, there will be no message to SSM.
A set SSM trigger delay of 0 seconds immediately reports faults or warnings.
If an error message or warning message occurs only for a brief duration (e.g. in case of a loose contact), the
reset delay prevents the SSM signal from fluttering.
NOTICE
SSM trigger and SSM reset delay is set to 5 seconds as a factory setting.
• SSM/ESM (collective fault signal/individual fault signal) in twin-head pump operation:
–
The SSM function must preferably be connected to the main pump. The SSM contact can be config-
ured as follows:
The contact reacts either only in the event of a fault or in the event of a fault and a warning.
Factory setting: SSM only reacts in the event of a fault.
Alternatively or additionally, the SSM function can also be activated on the standby pump. Both con-
tacts work in parallel.
–
ESM: The ESM function of the twin-head pump can be configured on each head of the twin-head
pump head as follows: The ESM function on the SSM contact only signals faults of the respective pump
(individual fault signal). In order to record all faults of the two pumps, both contacts must be assigned.
11.2 Application and function of SBM relay
The contact of the collective run signal (SBM, potential-free normally open contact) can be connected to a
building automation system. The SBM contact signals the operating status of the pump. The SBM relay can
either switch on for "Motor in operation", "Ready for operation" or for "Power supply ready".
98
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 warning.
Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10
Range in seconds
0 s ... 60 s
0 s ... 60 s