SAJ PDM20 series, User Manual

Page: 25 / 59

PDM20 Series
- 24 -
Function
code
Description Set range Unit Default
Display
level
Modific
ationlev
el
Notes
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 ○
P0.25
Water
shortage
protection
00
～
11 10 1 ○
Ones
：
judge water
shortage according to
frequency, current
0
： OFF
1 ： ON
Tens ： judge by pressure
0
：
OFF
1
：
ON
By default, pressure
judgment is ON.
P0.26
Water
shortage fault
detection
threshold
0.0 ～
P0.00
bar 0.5 1 ○
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 1 ○
It is valid when
P0.25 =01.
Comparison frequency
of water shortage
judgment. When
running frequency is
larger than this
frequency, it starts to
judge water shortage.