Fuji Electric FRENIC-HVAC User Manual page 520

J188 Filter Clogging Prevention/Anti Jam Function
J189 Filter Clogging Prevention Function
J190 Filter Clogging Prevention Function
J191 Filter Clogging Prevention Function
J192 Filter Clogging Prevention Function
J193 Filter Clogging Prevention/ Anti Jam Function
J194 Filter Clogging Prevention/ Anti Jam Function
J195 Filter Clogging Prevention/ Anti Jam Function
<Anti jam function>
When organic substance such as sand jams in the impeller of a submersible pump, the anti
jam function expels it through reverse rotation operation and then starts normal water supply
through normal rotation operation.
<Filter clogging prevention function>
When a fan's filter is clogged with coarse-grained dust, the filter clogging prevention function
expels the dust through reverse rotation operation, break it up, and then starts air blow
through normal rotation operation.
Only PID control 1 is valid for the filter clogging prevention function. When switch
from PID control 1 to PID control 2 is made, count values for the number of times
and time length for the filter clogging prevention function are cleared.
 Filter clogging prevention/Anti jam function (input selection) (J188)
- Data setting range: 0 to 3
Data for J188
0
1
2
3
<J188 = 1 (alarm: anti jam protection, inverter stop with rLo trip)>
When overcurrent protection (OC) becomes active during normal rotation operation, the anti
jam function operates. The number of reset times is counted up, and PID control is canceled
after the reset interval (H05). Then retry operation is performed with the reverse operation
frequency (J193) during the reverse rotation operation time (J194), followed by restoration
through normal rotation operation (PID control).
When overcurrent protection (OC) becomes active during reverse rotation operation, retry
operation is performed through normal rotation operation (PID control) after the reset interval
(H05). When overcurrent protection (OC) becomes active again after the number of reset
times reaches the number of allowed reverse operations (J195), alarm stop (rLo trip) is
resulted.
The number of reset times is cleared when operation is continued during the
number-of-reset-times clearing time (H104) after the reverse rotation operation frequency
(J193) is reached at the time of reverse rotation operation.
・ When overcurrent protection (OC) becomes active during reverse rotation
operation, the number of reset times is not counted up.
・ To use this function, you must disable the function that prevents generation of
overcurrent protection (OC). To do so, the following settings are needed.
Torque limit value 1 (drive) (F40) = OFF: Disable
Current limiting (mode selection) (F43) = 0: Disable
Torque limit value 2 (drive) (E16) = OFF: Disable
Instantaneous overcurrent limiting (mode selection) (H12) = 0: Disable
Disable
Enable: Alarm (anti jam protection, inverter stop with rLo trip)
Enable: Alarm (filter clogging trouble, inverter stop with FoL trip)
Enable: While warning (filter clogging trouble) is output, operation is
continued.
6-210
(Input selection)
(Reverse operation cycle time)
(Load resistance current)
(Load resistance PV signal)
(Load resistance detection timer)
(Reverse rotation running frequency)
(Reverse rotation running time)
(Number of allowable reverse runs)
Operation description