Wilo -Stratos GIGA2.0-I Einbau- Und Betriebsanleitung Seite 188

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188
• Efficiency-optimised peak-load operation (parallel operation):
In peak-load operation (parallel operation), the hydraulic output is provided jointly by
both pumps.
In the partial load range, the hydraulic output is initially provided by just one of the two
pumps.
If the sum of the electrical power consumption P1 of both pumps in the partial load
range is less than the power consumption P1 of one pump, then the second pump is
switched on with optimised efficiency.
This operating mode optimises operational efficiency compared to conventional peak-
load operation (exclusively load-sensitive switching on and off).
If only one pump is available, the remaining pump takes over the supply. The possible
peak load is limited due to the power of the single pump. Parallel operation is also pos-
sible with two single pumps of the same type in twin-head pump operation in the Y-
piece.
• Pump cycling:
The actively operated pump is regularly changed automatically to guarantee even usage
of both pumps in the event of single pump operation. If only one pump (main/standby,
peak load or night setback) is running, the pump being operated is changed after a run-
ning time of 24 h at the latest. Both pumps run at the time of pump changeover so that
operation is not interrupted. The operated pump can be replaced at least every 1 hour
and can be set in length increments up to a maximum of 36 hours.
NOTICE
The remaining time until the next pump cycling is recorded via a timer.
The timer stops if there is a mains interruption. After switching the mains
voltage on again, the remaining time until the next pump cycling contin-
ues to run.
The count does not start again from scratch!
• SSM/ESM (collective fault signal/individual fault signal):
–
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 a 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 configure the settings "Connecting twin-
head pump" in the "Settings" menu, sub-menu "Twin-head pump operation".
Installation and operating instructions • Wilo-Stratos GIGA2.0-I, Wilo-Stratos GIGA2.0-D • Ed.02/2022-07