Chapter 4 Parameters
VFD-EL-W
4-102
10.35
Multi-pump Control
Mode
0: Disable
1: Fixed time circulation
(alternative operation)
2: Fixed quantity control
(multi-pump operating at
constant pressure)
0 1 1
10.36 Multi-pump ID
0: Multi-pump control mode is
disabled
1: Master
2–4: Slave
0 1 2
10.37
Multi-pump’s Fixed
Time Circulation
Period
1–65535 minutes 60 1 1
10.42
Pump’s Frequency at
Time-out
(Disconnection)
0.00 Hz–FMAX 0.00 60 60
10.43
Pump’s Error
Treatment
Bit0: Determines whether the
erroneous pump switches to an
alternative pump when an error
occurs in the running pump.
0: All pumps stop.
1: Switch to an alternative pump
Bit1: Determines the erroneous
pump to be in a standby or stop
status after reset.
0: Standby after reset.
1: Stop after reset.
Bit2: Determines whether the
master pump receives the RUN
command or not when an error
occurs in the running pump.
0: Does not receives the RUN
command.
1: Choose to run with an
alternative pump.
1 1 1
000=0
001=1
010=2
011=3
100=4
101=5
110=6
111=7
10.44
Selection of Pump’s
Start-up Sequence
0: By pump ID#
1: By running time
0 1 1
Adjusts according
to customer’s
applications
10.45
Running Time of
Multi-pump Under
Alternative Operation
0.0–360.0 sec. 60.0 60.0 60.0
Adjusts according
to customer’s
applications
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