Water Supply Function Code Description - Sanken SAMCO-NS Series Instruction Manual

■ Water supply function code description

F3401
f
F3401 Water Supply Mode
■ F3401=0，Water supply function disabled
■ F3401=1，Selected single pump water supply
Please set the related code with pressure as the actual needing：F3405（pressure command） 、
F3406（analog feedback： pressure bias） 、F3407（analog feedback：pressure gain）
F3402 Lower limit range continued time Tｌ
Pls. set the judging time from Inverter output frequency to the lower frequency limit till to reduce
the motor drving.
The reference for the code setting value is varied with the time of pressure changing, the shortest
time is the better under the range of no oscillation.
F3403 Sleep wake up ratio K
F3403 is available with only using auxiliary pump, which is judge whether is needing to switch the auxiliary pump to Inverter
pump
Judgement equation：
K·F*≥Ff...... (1)
F* is frequency comman，Ff is frequency feedback value, k(≦1) is auxiliary pump switch ratio.
While using pressure command, frquency command turns into pressure command, and frequency
feedback value turned into pressure feedback value. The larger Ｋ, the slower swithcing to Inverter pump. By the way, that
function code also used for main pump sleep wake up, the same method as the above.
F3404 Sleep wake up decision time Tp
This function code is used in the main pump sleep wake up
F3404 is availability with only using auxiliary pump，Pls. set the decision time to switch to Inverter
Pump under the condition of meeting F3403. The reference time to set is the shorter the best withou Oscillation.
F3405 Pressure command Ｐｒｅｆ
F3405 is used for set pressure command value through operation panel, While F3405≠0 , even setting F3001=2、3、4、5、9，
it is invalid for analog reference pressure value. Action as the pressure command setted by F3405.
While F3405=0 , If set code F3001=2、3、4、5、9，which is analog reference. Pressure command
decided by analog value.
While F3405=0，and F3001=1(frequency reference), run as the frequency mode.
F3406 Analog feedback upper pressure limit
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