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14
Model BB4000 Controller Instruction Manual
6.2. Automatic Alternation - Parameter P.18
This Parameter is provided so that normal automatic alternation may be disabled (turned off).
Typically, normal alternation is disabled only in applications that have an external Time Clock
used to alternated the pumps. (The Time Clock would be connected to a Discrete Input pro-
grammed for “External Alternation”, Function 6.)
P
arameter
D
efault
V
alue
S
etting
D
efinitionS
P.18
1
Automatic Alternation 1 = Enabled 2 = Disabled
6.3. Forced Lead Pump Position - Parameter P.39
This Parameter is provided so that a fixed sequence may be established with the selected pump
always as lead. For example setting Parameter P.39 on 1 will cause a fixed pump call sequence
of 1-2-3-4. Parameter P.39 may also be changed by writing a 0,1,2,3 or 4 to SCADA Register
40022.
P
arameter
D
efault
V
alue
S
etting
D
efinitionS
P.39
0
Forced Lead Pump Position
SCADA Register 40022
0 = Normal Alternation 1(2,3,4) = Pump (1(2,3,4) as Lead
6.4. Time Based Alternation - Parameter 5.1
This feature may be used to ensure that alternation periodically occurs even in applications that
tend to run one pump for a long period of time. The internal Time Clock starts and runs when-
ever at least one pump is called to run. When it times out, it forces the alternation of the pumps
and then resets the Time clock. The Time Clock is also reset each time a Normal Alternation
Occurs.
P
arameter
D
efault
V
alue
S
etting
D
efinitionS
P.51
0
Time Based Alternation Time Clock Range: 1 - 255 1/6 hour
0 = Disabled 1 = 1/6 hour 6 = 1 hour 48 = 8 hours 144 = 24 hours
Содержание BB4000
Страница 58: ...52 Model BB4000 Controller Instruction Manual Return to Table of Contents 20 5 Connection Diagram Level Probe...
Страница 59: ...53 Model BB4000 Controller Instruction Manual Return to Table of Contents 20 6 Level Probe Placement and Setup...
Страница 61: ...55 Model BB4000 Controller Instruction Manual Return to Table of Contents 20 8 Float Backup Example Pump Down...
Страница 63: ...57 Model BB4000 Controller Instruction Manual Return to Table of Contents 20 9 Operator Interface...