Wilo Stratos GIGA Serie Instrucciones De Instalación Y Funcionamiento página 23

Operating possibilities at the
slave pump
6.3.3 Operation during interruption of
communication
Slave pump behavior
Installation and operating instructions Wilo-Stratos GIGA
EBM/SBM:
• A collective run signal (SBM) can be connected to the master for a
central control center.
• In this case, the contact may only be made to the master.
• The display is for the whole unit.
• This signal can be programmed on the IR-Monitor as an individual run
signal (EBM) or collective run signal (SBM) (menu <5.1.6.0>).
• The functions – "Readiness", "Operation", "Mains on" – from EBM/
SBM can be set at <5.7.6.0> at the master.
NOTE:
"Readiness" means: The pump can run; there is no fault.
"Operation" means: Motor shaft turns.
"Mains on" means: Mains voltage is present.
• The contact must be made to each pump for individual run signals.
No further settings can be made on the slave beyond "Ext off" and
"Block/release pump".
When communication is interrupted between two pump heads in dual
pump operation, both displays show the error code 'E052'. Both
pumps behave as single pumps for as long as the interruption lasts.
• Both modules report the fault via the ESM/SSM contact.
• The slave pump runs in emergency operation (manual control) mode
according to the emergency operation speed previously set on the mas-
ter (see menu items <5.6.2.0>). The factory setting of the emergency
operation speed is about half of the maximum speed of the motor.
• After acknowledging the fault display, the status indicator will be
shown on both pump displays for the duration of the communication
interruption. This resets the ESM/SSM contact at the same time.
• The slave pump display will show the symbol (
emergency operation).
• The (former) master pump continues to have control. The (former) slave
pump follows the emergency operation settings. It is only possible to
exit emergency operation by actuating the factory setting or, after end-
ing the communication interruption, by shutting power off and on again.
• NOTE:
During communication interruptions, the (former) slave pump cannot
run in auto control, since the differential pressure sensor has switched
to the master. When the slave pump is running in emergency opera-
tion mode, changes cannot be made to the module.
• After the end of the communication interruption, the pumps will
resume regular dual pump operation as before the fault.
Leaving emergency operation at the slave pump:
• Factory settings restored
During a communication interruption on the (former) slave, if emer-
gency operation is discontinued because the factory settings have
been restored, the (former) slave will start up with the factory settings
of a single pump. It will then run in p-c mode at approximately half
the maximum delivery head.
English
– Pump running in
17