DEMA D6B Series - Function Parameters of Constant-Pressure Water Supply

NO.6 Detailed Function Description
59
6.7 Function parameters of constant-pressure water supply
P130
Setting range
Unit
Ex-factory value
Alteration
Number of auxiliary pumps
0-2
1
0
╳
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
Setting range
Unit
Ex-factory value
Alteration
Continuous operating time of
auxiliary pump
1-9000 (min)
1
60
╳
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
Setting range
Unit
Ex-factory value
Alteration
Interlocking time of auxiliary
pump
1-250s
1s
5
○
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
Setting range
Unit
Ex-factory value
Alteration
High-speed operating time
1-250s
1s
60
○
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.