Mitsubishi Electric MELSEC iQ-R Series User Manual page 65

Section 5 BUFFER MEMORY
5.2.6 Alarm 1 monitoring factor (Un\G11), alarm 2 monitoring factor (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.
Setting value
0
1
2
3
4
5
6
7
8
(b) Measuring items for the monitoring target are as follows.
Description
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
*1: When multiple number of measuring items are targeted for monitoring, the alarm judgment
condition will be as following.
Upper/lower limits
Current demand upper limit
Voltage upper limit
Current demand lower limit
Voltage lower limit
*2: The idea of upper and lower for PF upper / lower limit judgment is shown below.
-0.1 -0.2
Lower
(Forward)
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 2-wire
1-phase current demand
1 - 2 line voltage
Condition for occurrence
Any one of alarm monitoring
factor exceeds the alarm
monitoring value.
Any one of alarm monitoring
factor go below the alarm
monitoring value.
-99.8 -99.9 100.0 99.9
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
99.8 0.2
Upper
(Delayed)
64
RE81WH
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 monitoring value.
All alarm item exceeds the
alarm monitoring value.
0.1 0.0