NMC-PRO Installation Manual
80Page
• Dosing Flow Difference (%): Difference between calculated and measured dosing channel flow above or
below which an alarm will be generated. For example, if the calculated dosing channel flow is 100 l/h, and the
actual flow is less than 70 l/h or above 130 l/h an alarm will be generated (depending on this parameter's
value. This example refers to a parameter set to 30).
• Missing Pulses For No Flow: Number of missing pulses before the system will generate a No Flow alarm.
The system calculates the expected time between pulses according to the calculated flow rate and the volume
per pulse of the water meter, if more time has passed than expected for the set number of missing pulses the
system will generate a No flow alarm.
• Stop System Consecutive Flow Alarms: Number of consecutive flow alarms of the same type (high flow,
low flow etc.’) but different valves before the system is stopped. This setting is used to pause the system
when there is a general malfunction that occurs in a few valves (or valve groups). The number on the right
side of the table indicates the number of consecutive flow alarms. Reaching set point activates a Stop System
Consecutive flow alarm.
Warning: When the water meter does not generate pulses and “missing pulses for NO FLOW” or “Max
consecutive flow alarms” are in ignore mode, irrigations by quantity will be “stuck” until stopped manually.
• # of Irrigations Without Drainage: Number of irrigations given without measuring drainage, above which an
alarm will be generated. This alarm usually indicates that the irrigation quantity is too small or that there is a
malfunction in the drainage measurement.
• Low Pressure Alarm (bar/psi): Define the minimum allowed pressure, under which an alarm will be
generated.
• Num. Of Short Circ. To Pause: Number of short circuit alarms measured before the system is paused. This
setting is used to pause the system when a general malfunction occurs causing several outputs to short
circuit.
• Short Output Level (60-350): Define the A/D threshold value to be considered as a short circuit (for further
instructions see NMC-Pro – Part 2 > Appendix 1 – General > Short Circuit Control). ¹
The following parameters will be visible only if an Extension box is defined;
• Short O. Level EXT1 (60 – 350): Define the A/D threshold value to be considered as a short circuit for
Extension box no. 1 (for further instructions see NMC-Pro – Part 2 > Troubleshooting > Short Circuit Control).
¹
• Short O. Level EXT2 (60 – 350): Define the A/D threshold value to be considered as a short circuit for
Extension box no. 2 (for further instructions see NMC-Pro – Part 2 > Troubleshooting > Short Circuit Control).
¹
• Short O. Level EXT3 (60 – 350): Define the A/D threshold value to be considered as a short circuit for
Extension box no. 3 (for further instructions see NMC-Pro – Part 2 > Troubleshooting > Short Circuit Control).
¹
¹ This value is set according to the table 5.1 parameter 'Load output level' parameter.
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