7-12
Table 7-5-4 External relay output pattern
Terminal
P100 set value
0 1 2 3 4
M1
No. 1 run
No. 1 run
No. 1 run
No. 1 run
Run *
7
M2
No. 2 run
No. 2 run
No. 2 run
No. 2 run
On inspection *
8
M3
No. 3 run
No. 3 run
No. 3 run
No. 3 run
-
M4
No. 4 run
No. 4 run
No. 4 run
No. 4 run
-
M5
No. 5 run
No. 5 run
No. 5 run
No. 5 run
-
B1
Pump No. 1 failure *
1
Serious failure*
3
Overload
INV trip *
9
Pump No. 1 failure *
1
B2
Pump No. 2 failure *
1
Slight failure
*4
Discharge pressure
abnormal drop
Discharge pressure
abnormal drop
Pump No. 2 failure *
1
B3
Full water
-
Electric leakage
Electric leakage
Full water
B4
Receiver tank low
Dry-run prevention
-
Abnormal water
level *
5
Abnormal water
level *
5
Receiver tank low
Dry-run prevention
B5
Trouble *
2
Any failure *
6
Any failure *
6
Any failure *
6
Trouble
*
2
B6
Pump No. 3 failure *
1
- - -
Pump No. 3 failure *
1
B7
Pump No. 4 failure *
1
- - -
Pump No. 4 failure *
1
B8
Pump No. 5 failure *
1
- - -
Pump No. 5 failure *
1
*1 The “No.(n) failure” signal is output if one of the following alarms occurs at the No.(n) pump. (n: 1 to 5)
Discharge pressure abnormal drop, Electric leak, INV trip, High temperature, Flow switch failure
*2 The “Trouble” signal is output if one of the following alarms occurs.
Electrode failure, Start frequency failure, Pressure transmitter 1 failure, Control panel high temperature,
EEPROM error
*3 The “Serious failure” signal is output if no pumps can run in automatic mode in the event of an error.
Note that the signal is not output if the “Operation Permission” settings for all the pumps are set to
“Operation blockeded.”
*4 The “Slight failure” signal is output if any of the pumps can still run in automatic mode in the event of an
error.
*5 The “Abnormal water level” signal is output if any of the “Receiver tank full,” “Receiver tank low,” “Dry-run
prevention,” or “Electrode failure” alarms occur.
*6 The “Any failure” signal is output if any type of an alarm occurs.
*7 The “Run” signal is output if any of the pumps are running.
*8 The “On inspection” signal is output in inspection mode.
*9 The “INV trip” is output if one of the following alarms occurs.
Overload, Overcurrent, Overvoltage, Stall prevention, Inverter overload, Open-phase output, Inverter
overheat, Communication failure, Inverter trouble 1, Inverter trouble 2
