Wilo Yonos GIGA-N 80 Installation And Operating Instructions Manual page 13

4.3.2 Behaviour in twin-head pump op-
eration
Δp
Pump 1 Pump 2
Fig. 6: Pump cycling, schematic representation
[%] [m] [1/min]
Δp max n max
100
Δp min n min
0
off 0 0
0 1,0 1,5 4,0
2 2,8 3,2 5,2
0 2,0 3,0 8,0
4 5,6 6,4 10,4
Fig. 7: Behaviour of the inputs and outputs
Installation and operating instructions Wilo-Yonos GIGA-N
Product description
Pump cycling
With twin-head pump operation, pump cycling occurs periodically (the intervals can be
set; factory setting = 24 hours).
Pump cycling can be triggered:
ƒ
Internally, time-controlled (menu <5.1.3.2> + <5.1.3.3>)
ƒ
Externally (menu <5.1.3.2>) by a positive beam on the "AUX" contact
ƒ
Manual (menu <5.1.3.1>)
Manual or external pump cycling is possible 5 seconds after the last pump cycling at the
t
earliest.
Activating external pump cycling simultaneously deactivates internal time-controlled
pump cycling.
Schematised description of pump cycling operation (see diagram):
ƒ
Pump 1 is running (black line)
ƒ
Pump 2 is switched on at minimum speed and soon afterwards reaches the setpoint
(grey line)
ƒ
Pump 1 is switched off
ƒ
Pump 2 continues to run until the next pump cycling
NOTICE
In constant speed mode, a slight increase in flow can be expected. Pump cycling is
dependent on the ramp time and generally lasts 2 sec. In control mode, there may be
minor fluctuations in the delivery head. However, pump 1 adjusts itself to the
changed conditions. Pump cycling is dependent on the ramp time and generally lasts
4 sec.
Behaviour of the inputs and outputs
Actual value input In1, setpoint input In2.
ƒ
At the master: acts on the whole unit
"External off"
ƒ
Set at the master (menu <5.1.7.0>): Depending on the setting in menu <5.1.7.0>,
acts only on the master or on the master and the slave
ƒ
Set at the slave: Acts only on the slave
10
[V]
10
20
[mA]
20
Fault and run signals
Single (ESM) or collective fault signal (SBM):
A collective fault signal (SSM) can be connected to the master to create a central con-
trol centre. In this case, contact may only be made to the master. The display is for the
whole unit.
The contact must be made to each pump for individual fault signals.
This signal can be programmed on the master (or using the IR-Monitor/IR-Stick) as an
individual fault signal (ESM) or collective fault signal (SSM) in menu <5.1.5.0>.
The functions of EBMs/SBMs – "Readiness", "Operation", "Mains on" – can be set in
menu <5.7.6.0> on the master.
NOTICE
"Readiness" means: The pump is able to run, there is no fault.
"Operation" means: Motor running.
"Mains on" means: Mains voltage is available.
en
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