LEROY-SOMER
INSTALLATION & MAINTENANCE 4010 en – 03.2011 / b
MODULE R729
8 8
3.4.1. Alternator PF setpoint adjustment:
Do not apply the 4/20mA current
Set CA1 to position 1, CA2 to the ON position, P15 = 5
Connect the alternator to the mains and select alternator PF adjustment (2F)
Adjust the PF using P2 to give the upper value of the range (E.g.: cos ϕ= 1)
Apply the 4/20mA current – Adjust to obtain 4mA
LED 5 should light.
Adjust with P6 to obtain the same setpoint as before (e.g.: cos ϕ= 1)
If this is not possible, set jumper CA1 to 2, then repeat the same tests. (CA1 inverses the 4/20mA signal)
Apply 20mA
Adjust with P15 to obtain an inductive PF (e.g.: PF = 0.8 lagging)
With this setting, when the current varies from 4 to 20mA, the PF varies from 1 to 0.8.
In the event that there is no 4/20mA current, the setpoint automatically returns to the internal setpoint value
for the function concerned and contact C9 is closed.
3.4.2. kVAr setpoint adjustment:
Do not apply the 4/20mA current
Set CA1 to position 1, CA3 to position ON, P15 = 5
Connect the alternator to the mains and select alternator PF adjustment (2F), then kVAr adjustment.
Adjust the kVAr values using P4 to give the minimum kVAr or capacitive kVAr values (e.g.: kVAr = 0 or cos
ϕ= 1)
Apply the 4/20mA current – Adjust to obtain 4mA
LED 5 should light.
Adjust with P6 to obtain the same setpoint as before (e.g.: kVAr = 0)
If this is not possible, set jumper CA1 to 2, then repeat the same tests.
Apply 20mA
Adjust with P15 to obtain the maximum inductive kVAr.
With this setting, when the current varies from 4 to 20mA, kVAr varies from 0 to the specified inductive kVAr
values.
In the absence of a 4/20mA current, the setpoint automatically returns to the internal setpoint value for the
function concerned and contact C9 is closed.
3.4.3. Voltage setpoint adjustment:
Do not apply the 4/20mA current
Set CA1 to position 2, CA4 to the ON position, P15 = 5
Run the alternator at no load with Un –5%Un.
Apply the 4/20mA current – Adjust to obtain 4mA
LED 5 should light.
Adjust with P6 to obtain Un –5%Un
If this is not possible, set jumper CA1 to 2, then repeat the same tests.
Apply 20mA
Adjust with P15 to obtain Un + 5%Un.
With this setting, when the current varies from 4 to 20mA, the voltage varies by +/ -5%Un.
In the absence of a 4/20mA current, the setpoint automatically returns to the internal setpoint value for the
function concerned and contact C9 is closed.
