Manual

117
DXi User Manual
Appendix C: Current Alarms Within a Conventionlly Wired DXi System
Scenario 3 - DXi submaster 001-00 begins automatic irrigation operation of program
1, by activating MV1, Pump1 then station 1. After station 1 is activated the measured
current exceeds 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
0.60 0.90 0.87
Sat
001-01
DXi
Sat
001-02
DX2
Sat
001-03
DX2
Result 3 - 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 above maximum allowed, and
deactivates M1.
DXi submaster 001-00 raises alarm 1139 "Master Valve maximum Current" and
condemns M1.
DXi submaster 001-00 activates P1, verifies current is in range, and deactivates P1.
DXi submaster 001-00 activates S1, verifies current is in range, and deactivates S1.
DXi submaster 001-00 terminates automatic irrigation of program 1. Manual operations
will not activate M1 until alarm is cleared. Automatic operations using M1 will be
blocked from running until alarm is cleared.
Scenario 4 - DXi submaster 001-00 begins automatic irrigation operation of program
1 and program 2, by activating MV1, Pump1, station 1 then station 2. After station 2 is
activated 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, 2 M1 = 0.20
P1 = 0.25
S1 = 0.15
S2 = 0.16
M1 = 0.25
P1 = 0.30
S1 = 0.20
S2 = 0.21
M1 = 0.29
P1 = 0.34
S1 = 0.24
S2 = 0.25
0.76 0.7 1.12
Sat
001-01
DXi
Sat
001-02
DX2
Sat
001-03
DX2
Result 4 - 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 in range, and deactivates S1.
DXi submaster 001-00 activates S2, verifies current is below minimum allowed, and
deactivates S2. DXi submaster 001-00 raises alarm 1121 "Station Minimum Current" and
condemns S2.