FLYGT APP 541, User Manual

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Set pump alternation to "Off".
Configure Extra Functions
Current Measurement
The RTU can measure pump currents.
Before using this function
This function requires that a current transformer is connected to the current transformer
input. (Reference: Installation manual).
Types of currents
Each pump has its own current, but they are measured in pairs:
• Pump 1 and pump 3 currents
• Pump 2 and pump 4 currents
Function: Current alarm limits
When the current:
• Exceeds High current limit, a high current alarm is generated.
• Drops below Low current limit, a low current alarm is generated.
Current factor
If two currents in a measured pair have different maximum currents, it is necessary to
specify the factor between them.
Example: Maximum current for pump 1 (5,5 A), is divided by the maximum current for
pump 3 (8 A). The current factor is 0,63.
Configure current measurement:
1. Specify high current alarm limit for pump 1 in the P1 high current menu (3_1).
2. Specify low current alarm limit for pump 1 in theP1 low current menu (3_2).
3. Repeat Step 1–2 for each additional pump.
4. Specify the current transformer rating for pump 1/pump 3 in the P1/P3 Current
range menu (3_3).
5. Specify the current factor between pump 1 and pump 3 in the Current factor P1/P3
menu (3_4).
Keep in mind: Only necessary when the maximum pump currents are different.
6. Repeat step 4–5 for the other pair of pumps.
Disable alarm limit
Set the alarm limit to "0".
Rain Measurement
The RTU can measure the rain fall based on pulses from a rain meter.
Before using this function
• Configure a General purpose input as rain meter input.
• Obtain scale factor for rain meter. (Reference: Rain meter documentation).
Function: Rain alarm limits
When the average rain fall during:
• 5 minutes exceeds its rain alarm limit, a high rain 5 min alarm is generated.
• 24 hours exceeds its rain alarm limit, a high rain 24 h alarm is generated.
Configure rain measurement:
1. Specify the scale factor for the rain meter in the Rain scale menu (9_3).
Example: if the rain meter is specified to give 1.2 mm/pulse, enter 1.2 as scale factor.
2. Specify the rain alarm limit for a 5 minute period in the Rain alarm 5min menu (9_1).
3. Specify the rain alarm limit for a 24 hour period in the Rain alarm 24h menu (9_2).
Extended Configuration
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