dooch Q-Drive NQ-0075-S, User Manual, Page: 58 / 80

and error content of the fault using key.
[CHAPTER 6 FUNCTION TABLE & DESCRIPTION]
Setup Data Functional Description Related Function
Pr-74
Low Water Level Alarm Time
Of Pressure Sensor
0
(Factory
Setting)
Software detection using
pressure sensor
Pr-75
Pressure Level for
Low Water Level Alarm
1 Low water level sensor setup Pr-77
Low Level Alarm Time of
Low Water Level Sensor
Pr-77 Low level Sensor Low Level Trip Time
ㆍ
It sets maintain time of low level sensor signal to issue low level alarm.
That is, if the low level sensor signal is continued for more than trip time when low level sensor is
selected from low level trip method (Pr-76), it is required to display alarm and stop operation as it
is determined that there is no water within the suction piping.
Setup Data Functional Description
0 Release of low level detection using low level sensor
Time Setup (Factory Setting 2[sec]) 1 ~ 250[sec]
Pr-80 ~Pr-85 Fault History List
ㆍ
Pr-80 displays Error Code value occurred currently.
ㆍ
Pr-81 ~ Pr-85 are memorized in reverse order of Error occurrence.
ㆍ
It is possible to enter into using key and to confirm frequency, current, operation state
FND Display Description
tSF, tOP, tUP, tUL, tASH etc Error Content (Refer to Chapter 8 Fault History Table)
Frequency with Error H xx.x
Current with Error A xx.x
No. of Errors coourred t xx
Stdy, StOP, AdOFS, wdOG Operation status with Error
6-14 |
DOOCHPUMP
Pr-76 Low Water Level Alarm Method Selection
ㆍ
It is a mode to set up low water level alarm detection method.
ㆍ
In case of setting up low water level sensor, it is required to attach electrode outside to determine
existence of water within piping.
ㆍ
In case of multi-drive operation, low water level sensor should be linked to the lowest ID Drive.
※
If there is no water on suction part, all of drives (pumps) will stop.
When it is set to Software detection, it detects the alarm on the basis of low water level alarm
pressure level (Pr-75) and low water level alarm time (Pr-74). That is, if the operation is
continued for more than low water level alarm time (Pr-74) with pressure under the low water
level alarm pressure level (Pr-75), it is required to display alarm and stop operation as it is
determined that there is no water within the piping.