Details about Function Parameters
122
Startup Sequence:
When any number in “1
~
5” is selected, the pump to be first started will be
directly selected.
Startup Sequence:
When “6” is selected, a motor disused for a relatively long time will be
started to prevent rusting from disuse. The inverter is inbuilt with a timed rotation function. See
the description of F8-18.
If the sequence number of the pump to be first started is greater than system settings, the startup
sequence will begin with Pump #1.
Firefighting Patrol: When
F8-00 = 4 (firefighting water supply), the system is usually in
standby mode. The system will not be started unless in case of a fire. In order to prevent the
pump from rusting from a prolonged disuse, the pump must be started at regular intervals. The
duration of the operation can be set via F8-41. If the pump to be patrolled is an auxiliary pump,
select line-frequency operation; if the pump to be patrolled is a variable-frequency pump, operate
it at a trial working frequency (F8-36).
Control for Water Injection Valve and Air Vent Valve:
Corresponding output terminals must
be set to control water injection valves and air vent valves (for digital output or relay output, see
the table of definitions of digital output functions). After the pump attains to the upper frequency
limit, if the pump is detected to be underloaded, the pipe network must have a water injection or
air vent operation. When the duration of water injection and air vent reaches the time set by
F8-43, the pump will restart for operation. If normal water supply can not be restored for several
successive times, a suction pool water shortage alarm will be sounded.
F8-40
Firefighting Patrol Interval
Factory
Settings
360.0h
Modification
○
Setting
Range
0.1
~
720.0h
F8-41
Firefighting Patrol Duration
Factory
Settings
900.0s
Modification
○
Setting
Range
10.0~1800.0s
F8-42
Control for Water Injection Valve
and Air Vent Valve
Factory
Settings
00
Modification
○
Setting
Range
Tens digit: Pump #2 Units digit: Pump #1
0: Water injection valve and air vent valve inapplicable 1: Control for water injection
valve and air vent valve
F8-43
Duration of Water Injection and
Air Vent
Factory
Settings
180.0s
Modification
○
Setting
Range
10.0
~
360.0s