TECO-Westinghouse F510 Series, Instruction Manual

Page: 343 / 444

4 - 271
Set 23-01
to 2, Pressure setting is modified by Master and Slave follows Master’s command to update
synchronously.
23-31=3: Run/Stop
Set 23-
01 to 3, Run/ Stop command is set by Master and Slave follows Master’s command. Run/Stop
command from Slave can be regarded as the emergency stop command with the highest priority.
Notes:
1. When Master modifies the pressure setting, it requires pressing ENTER key to modify the
pressure setting of Slave.
2. When the switching time of multiple pumps in parallel (23-29) changes and reconnection, it will
recount the time.
Bar
Hz
time
time
Hz
time
M
a
s
te
r
S
la
v
e
Pressure Feedback
Value
23-02
Target Pressure
Value
23-09
Tolerance Range of
Constant Pressure
Output
Frequency
A B C D
23-30
Detection
Time
Output Frequency
60Hz
Figure 4.4.111 Dual pumps start up process
A
：
Dual pumps are enabled during this time. Master starts up first and Slave is in standby to enter
constant-pressure operation.
B
：
Large water consumption results in the higher operation frequency of Master. If water pressure is not
lower than the tolerance range of constant-pressure and the operation time is not over the detection
time (23-30), Slave is still in standby.
C
：
If it is over the detection time (23-30), and Master runs at 60Hz, Master informs Slave of auxiliary
kicking water. After Slave operates, the operation frequency of Master and Slave reduces to the
operation of constant-pressure if water consumption is stable.
D
：
If water consumption is mild, the operation frequency of Master and Slave reduces. Because the water
consumption is less than that of the operation of dual pumps, Slave stops to sleep (please refer to
parameter 23-22 for dual pump slave sleep requirements) and only Master runs to reach
constant-pressure operation.
Notes:
- When 23-35=3, If the operation time is over the switching time (23-29) or sleep to stop under the
operation of dual pumps, the dominance between Master and Slave will exchange to operate.
- When 23-
01≠0, the parameter 23-01 of these two inverters can not be simultaneously set to 1 or 2.