Manual

118
DXi User Manual
Appendix C: Current Alarms Within a Conventionlly Wired DXi System
DXi submaster 001-00 resumes automatic irrigation operation of program 1 and 2, for
none condemned stations. Manual or automatic operations will not activate S2 until
alarm is cleared.
Scenario 5 - DXi submaster 001-00 begins manual irrigation by activating MV1, Pump1
then Station 1. Next DXi satellite 001-01 begins manual irrigation by activating station
3. After station 3 is activated by DXi satellite 001-01 the measured current is below the
minimum allowed current.
FLOW
MAX
Group
Satellite
Type
Master
Valves
"ON"
Pumps
"ON"
Station
"ON"
Min
Current
Nominal
Current
Max
Current
Total
Min.
Current
Total
Measured
Current
Total
Max.
Current
Sub
001-00
DXi M1 P1 1 M1 = 0.20
P1 = 0.25
S1 = 0.15
M1 = 0.25
P1 = 0.30
S1 = 0.20
M1 = 0.29
P1 = 0.34
S1 = 0.24
0.6 0.75 0.87
Sat
001-01
DXi 3 S3 = 0.10 S3 = 0.15 S3 = 0.20 0.1 .09 0.2
Sat
001-02
DX2
Sat
001-03
DX2
Result 5 - DXi satellite 001-01 deactivates S3, raises alarm 1121 "Station Minimum
Current" and condemns S3.
Manual or automatic operations by satellite 001-01, will not activate S3 until alarm is
cleared.
Note, Irrigation at submaster 001-00 is not affected in this scenario.
Scenario 6 - DXi submaster 001-00 begins an automatic irrigation operation by
activating MV1, Pump1 then station 1. Next DXi satellite 001-01 begins an automatic
irrigation operation by activating station 3. Next the DXi submaster 001-00 measures
current above the maximum allowed current.
FLOW
MAX
Group
Satellite
Type
Master
Valves
"ON"
Pumps
"ON"
Station
"ON"
Min
Current
Nominal
Current
Max
Current
Total
Min.
Current
Total
Measured
Current
Total
Max.
Current
Sub
001-00
DXi M1 P1 1 M1 = 0.20
P1 = 0.25
S1 = 0.15
M1 = 0.25
P1 = 0.30
S1 = 0.20
M1 = 0.29
P1 = 0.34
S1 = 0.24
0.6 1.9 0.87
Sat
001-01
DXi 3 S3 = 0.10 S3 = 0.15 S3 = 0.20 0.1 .16 0.2
Sat
001-02
DX2
Sat
001-03
DX2
Result 6 - DXi submaster 001-00 suspends irrigation (valves are deactivated, and
program runtimes continue to decrement) and starts diagnostic process.
DXi submaster 001-00 activates M1, verifies current is in range and deactivates M1.
DXi submaster 001-00 activates P1, verifies current is in range and deactivates P1.
DXi submaster 001-00 activates S1, verifies current is above maximum allowed and
deactivates S1. DXi submaster 001-00 raises alarm 1120 "Station Maximum Current"
and condemns S1.