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9.3 Example:
If we need to switch ON 20 kvar. Parameters programmed on the device:
33
.
(lowest step): 10 kvar
Sensitivity programmed: 60 sec/kvar (lowest step on
3
.
)
We will have: Reactive power needed of 20 kvar is equal to 2 x 10 kvar (lowest step on
3
.
)
Therefore, The device will switch On the step in: 60sec / 2 = 30sec
10 - OPERATION MODE:
!!! ATTENTION !!!
The operating mode can't be changed if
LED
'
kvar, Set Cos
M
or
SENSITIVITY
is switched on.
1.
Press the button
for 1 second to select the mode (Manual or Automatic)
2.
The LED
or
will indicate the selected mode.
3.
The operating mode remains stored even in absence of supply voltage.
Note: If several steps are inserted, switching from automatic to manual mode, the connected steps will be disconnected.
10
.
1 MANUAL OPERATION MODE:
During Manual operation mode , the status of step relays is stored even in the absence of supply voltage to the unit.
When the power is back, the unit will return to the stored status.
1.
Only when you show
value, pressing the button
or
to select the relay to be activated and the
correspondent LED will blink.
2.
Press the button
within 5 seconds of step selection, to modify the status of the output relay (turn On or turn OFF).
3.
Repeat the above operation for the next steps to be examined.
4.
If the last step is programmed as Alarm relay, then the relay can not be driven manually.
Note: During Manual operation the device controls the reconnection time of the capacitors (same as discharge time of the
capacitor on
3
.
), therefore to switch ON the same steps it will be necessary to wait for the reconnection time programmed.
10
.
2 AUTOMATIC OPERATION MODE:
During automatic operation the PFC will consider the Cos
M
of the installation and the Set Cos
M
programmed.
1.
If the
LED is flashing, the controller is ready to switch On or Off the steps.
2.
If
the reaction time of the instrument seems to be too long, this is because
the Cos
M
controller is waiting for the
reconnection settled time (
3
.
).
3.
The instrument uses the best choice combination of the following options listed below (in decreasing priority level):
a) Reactive power needed.
b) Reconnection time for the selected step.
c) Number of switching necessary to reach the desired Cos
M
.
d) Number of the effective insertions and connections.
e) Total time need of the effective insertions/connections.
4.
The software also includes the Anti-Hunting protection for the capacitors to prevent inconvenient switch on/off when trying
to correct the Cos
M
of installation if the available capacitor is too big.
The new Cos
M
measure must be less than 1.00 with the capacitor is on.
ETI Elektroelement d.d. - Slovenija
Tel.: 03/56-57-570- Fax: 03/56-74-077
www.eti.si - [email protected]
