Mitsubishi Electric Melsec Q Series User Manual page 52

6 Buffer memory
6.2.6 Alarm 1 item (Un \ G11), alarm 2 item (Un \ G21)
Set which measuring item will be monitored for the upper/lower limit alarm.
Alarm 1 and 2 operate independently.
(1) Setting procedure
(a) Set the item for alarm 1 and 2 in the buffer memory. Setting range is as follows:
(b) Measuring items for the monitoring target are as follows:
Current demand upper limit
Current demand lower limit
Voltage upper limit
Voltage lower limit
Electric power demand
Electric power demand
Power factor upper limit
Power factor lower limit
*1 When multiple number of measuring items are targeted for monitoring, the alarm judgment
condition will be as following.
Current demand upper limit
Current demand lower limit
Setting value
0
1
2
3
4
5
6
7
8
Description
single-phase 2-wire
1-phase current demand
1 - 2 line voltage
upper limit
lower limit
Upper/lower limits
Voltage upper limit
Voltage lower limit
Description
No monitoring
Current demand upper limit
Current demand lower limit
Voltage upper limit
Voltage lower limit
Electric power demand upper limit
Electric power demand lower limit
Power factor upper limit
Power factor lower limit
Measuring item of monitoring target
single-phase 3-wire
1-phase current demand
3-phase current demand
*1
1 - 2 line voltage
2 - 3 line voltage
*1
Electric power demand
Power factor *2
Alarm judgment conditions
Condition for occurrence
Any one of alarm item
exceeds the alarm value.
Any one of alarm item go
below the alarm value
6 – 10
QE81WH
three-phase 3-wire
1-phase current demand
2-phase current demand
3-phase current demand
*1
1 - 2 line voltage
2 - 3 line voltage
3 - 1 line voltage
*1
Condition for
non-occurrence
All alarm item go below the
alarm value.
All alarm item exceeds the
alarm value