Wilo Control EC-Fire Einbau- Und Betriebsanleitung Seite 53

Furthermore, the collective fault signal (SSM) as
well as the individual fault contact (ESM) of the
affected pump are active in the event of a fault.
If dry-running protection is activated, forced
deactivation of all available pumps occurs and a
visual alarm signal is output. Additionally,
depending on parameterisation, an acoustic alarm
signal can be output via the internal buzzer and
the signal lamp activated. Furthermore, the col-
lective fault signal (SSM) is active.
Mode Signal sequence
1 Fig. 11
2 Fig. 12
3 Fig. 13
3a* Fig. 14
3b Fig. 15
4 Fig. 16
* Factory setting
Mode 1
If the system pressure falls below the start-up
pressure (setting on the pressure switch), the
pressure switch contact is closed and the switch-
gear activates a connected pump immediately (1).
The flow of water in the system closes the contact
of the flow switch (2) and the pump continues
running irrespective of the system pressure.
If the volume flow requirement in the system falls,
the pressure increases again; the pressure switch
contact opens when the deactivation
threshold (3) is exceeded. If the volume flow falls
below the deactivation threshold of the flow
switch, the contact is opened (4) and, after an
adjustable follow-up time (menu 1.06), the pump
is deactivated (5).
Installation and operating instructions Wilo-Control EC-Fire
Pressure signal detection (menu 5.06)
Operating modes
The device always operates with a pressure-
dependent cut-in and a pressure-dependent /
volume-flow-dependent deactivation of the
pumps. Various modes are possible, depending on
the sensors used in the unit. The signal sequences
(Fig. 11 – 16) are shown using a pump as an
example.
Volume flow detection (menu 5.08)
Mode 2
If the system pressure falls below the start-up
pressure (setting on the pressure switch), the
pressure switch contact is closed and the switch-
gear activates a connected pump immediately (1).
The flow of water in the system causes the volume
flow to rise above the zero flow cut-off (2) set in
menu 5.19 and the pump continues running irre-
spective of the system pressure.
If the volume flow requirement in the system falls,
the pressure increases again; the pressure switch
contact opens when the deactivation
threshold (3) is exceeded. If the volume flow falls
below the zero flow cut-off (4) and, after an
adjustable follow-up time (menu 1.06), the pump
is deactivated (5).
English
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