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11.2
Twin-head pump behaviour
11.3
Settings menu - dual pump man-
agement
166
–
The SSM function must preferably be connected to the main pump. The SSM contact
can be configured 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 contacts 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 sig-
nals faults of the respective pump (individual fault signal). In order to record all faults
of the two pumps, both contacts must be assigned.
•
SBM/EBM (collective run signal/individual run signal):
–
The SBM contact can be assigned to any of the two pumps. The following configura-
tion is possible:
The contact is activated when the motor is in operation, power supply is present or
no fault is present.
Factory setting: ready for operation. Both contacts signal the operating status of the
twin-head pump in parallel (collective run signal).
–
EBM: The EBM function of the twin-head pump can be configured as follows:
The SBM contacts only signal run signals of the respective pump (individual run sig-
nal). In order to record run signals of both the pumps, both contacts must be as-
signed.
•
Communication between pumps:
Communication for a twin-head pump has been set at the factory.
Wilo Net must be installed with cable between the pumps when connecting two single
pumps of the same type to a twin-head pump.
Then set the termination as well as the Wilo Net address in the menu under "Settings/
external interfaces/Wilo Net setting". Then, in the "Dual pump management" submenu
of the "Settings" menu, select the settings "Connect twin-head pump".
NOTICE
For the installation of two single pumps to form a twin-head pump, see
sections "Twin-head pump installation/Y-pipe installation" [" 139],
"Electrical connection" [" 140] and "Application and function of the Wilo
Net interface" [" 186].
The control of both pumps starts from the main pump to which the differential pressure
sensor is connected.
In case of breakdown/fault/communication interruption, the main pump alone takes over
complete operation. The main pump runs as a single pump according to the set operating
modes of the twin-head pump.
The standby pump, which receives no data from the differential pressure sensor in the con-
trol modes (Δp-v, Δp-c), runs in the following cases at an adjustable constant emergency
operation speed:
•
The main pump to which the differential pressure sensor is connected fails.
•
The communication between the main pump and the standby pump is interrupted.
The standby pump starts immediately after detecting a fault.
With the n-const. control mode, there is no adjustable emergency operation. In this case,
the standby pump runs at the last known speed both in main/standby operation and in par-
allel operation.
In the "Dual Pump Management" menu, a twin-head pump connection can be established
or disconnected and you can also set the twin-head pump function.
The
settings menu "Dual Pump Management" has different submenus depending on
the status of the twin-head pump connection.
The following table gives an overview of possible settings in the dual pump management:
Installation and operating instructions • Wilo-Yonos GIGA2.0-I/-D • Ed.02/2023-08
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