SAJ PDM20 series - Page 41

PDM20 Series
-40-
P0.30
Self-restarting delay of
water shortage
protection
0～
9999
min 15
If it is set to be 0, use pressure to
self-reset water shortage.
Following methods can realize water shortage protection by default:
（
1
）
The switch of water shortage protection is turned on
（
P0.25=1x
）
;
（
2
）
The feedback pressure is less than allowed threshold value of water shortage
detection(feedback pressure<P0.26);
（
3
）
The current running frequency is no less than water shortage protection
detection frequency
（
running frequency>=P0.27
）
;
（
4
）
When
（
1
）
-
（
3
）
are satisfied, timing starts. When the time meeting the
condition exceeds abnormal pressure alarm delay time (delay time>P0.29), water
shortage fault will be reported. When either condition is not satisfied during timing,
timing recounts.
When water shortage fault is reported, after the time set by P0.30, the drive will
reset. By setting the next following parameters:
P0.32 Inflow detection pressure
0.0～P0.00
bar 1.0
P0.33 Inflow detection time
0.0～100.0
s1.0