Function Parameters Of Constant-Pressure Water Supply - DEMA D5M Series Manual

6.7 Function parameters of constant-pressure water supply

P130
Number of auxiliary pumps
The quantity of auxiliary pumps shall be set via this parameter; start or stop of auxiliary
pumps are realized by using multi-function output contact, and auxiliary pump 1 or 2 shall be
controlled through peripheral control circuit.
P131
Continuous operating time of
auxiliary pump
When only one of two pumps is in service, for the purpose of making each pump operating in
an average manner, when operating time of one pump reaches P131, the other pump shall
be switched for operating.
P132
Interlocking time of auxiliary
pump
Setting of this parameter shall determine interlocking time of two auxiliary pumps during
mutual switching as shown in Figure 6-14.
Figure 6-14 Interlocking Time Switching of Auxiliary Pump
P133
High-speed operating time
In the process of applying constant pressure water supply, main pump operates at fast
frequency (as set in P060) due to larger water consumption; when high-speed operating time
is achieved, corresponding multi-function contact shall be actuated and auxiliary pumps start
to operate. Refer to Figure 6-15 for details.
Setting range Unit
0-2 1
Setting range Unit
1-9000 (min) 1
Setting range Unit
1-250s 1s
Setting range Unit
1-250s 1s
NO.6 Detailed Function Description
Ex-factory value
0
Ex-factory value
60
Ex-factory value
5
Ex-factory value
60
Alteration
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Alteration
╳
Alteration
○
Alteration
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