SAJ PDM20 series, User Manual

Page: 40 / 59

PDM20 Series
- 39 -
P0.21
Set value of high
pressure alarm
0.0
～
P0.03 bar 8.0 When feedback pressure is bigger
than or equal to the set value, after
the delay of P0.22, it alarms and
stops.
P0.22
Detection time of
high pressure alarm
0.0
～
200.0
s 3.0
P0.23
Set value of low
pressure alarm
0.0
～
P0.21 bar 0.0
When feedback pressure is smaller
than the set value, after the delay of
P0.24, it alarms and stops. This
function is invalid when it is set to
0.
P0.24
Detection time of
low pressure alarm
0.0
～
200.0 s 3.0
The SPD will compare P0.21 and P0.23 according pipe network pressure fed back
by sensor. If pressure is abnormal, it will stop and alarm automatically to protect
pipe network system.
P0.25
Water shortage
protection
00
～
11
10
Ones
：
judge water shortage
according to frequency, current
0:OFF
1:ON
Tens
： judge by pressure
0:OFF
1:ON
P0.26
Water shortage fault
detection threshold 0.0 ～
P0.00
bar 0.5
It judges water shortage only when
feedback pressure is smaller than
the set value.
P0.27
Water shortage
protection detection
frequency
0 ～
60.00
Hz 45.00
It is valid when P0.25 = 01.
Comparison frequency of water
shortage judgment.
P0.28
Current percentage of
water shortage
protection detection
80
～
300.0
% 150.0
It is valid only whenP0.25=01.
Percentage of motor rated current.
P0.29
Water shortage
protection detection
time
0
～
900.0
s 20.0