3. Operation
3.3 Normal mode. Operation on preferred source S1
Operation on the preferred source
S1
Q1
S2
Q2
24
29
30
31
32
33
During normal operation on the preferred source S1, LEDs 24 , 29 , 30 , 31 , 32 , 33 , 36 and 38 are on in green.
If LED 38 is orange, there is an overload.
If LED 38 is red, the load is no more supplied.
Q1BP
Q3
Q2BP
36
38
Automatic transfer to the alternate source
S1S2
|
| 24 |
|
| 29 |
Q1 | Q2 | 30 |
|
| 31 |
|
| 32 |
|
| 34 |
Q1BP | Q3 | Q2BP |
|
|
36
38
The load is automatically transferred to the source offering the highest level of power quality.
For example, if the preferred source S1 goes outside tolerances, LED 31 goes orange or red. The buzzer beeps.
Upsilon STS automatically transfers the load to the alternate source S2. LEDs 24 , 29 , 30 , 32 , 34 , 36 and 38 are on.
Upsilon STS transfers the load back to the preferred source S1 as soon as it returns to within tolerances.
To stop the buzzer, press the
function button marked 
.
Manual transfer to the alternate source
|
| 25 |
S1 | S2 | 27 |
|
|
Q1 | Q2 |
Q1BP | Q3 |
| Q2BP |
|
|
| |
|
|
|
|
|
|
|
|
1 - Press the manual transfer button 25 :
2 - Confirm the order by pressing the grey function button 23 marked 
on the screen.
LEDs 24 and 27 flash.
After the transfer, the green LED 27 goes on.
The load is supplied by alternate Source 2.
Transfer is authorised only if the two sources are within tolerances (voltage, frequency) and their phase displacement is within the set limits. If these two conditions are not met, the transfer order is stored in memory and executed when the voltages cross zero.
If transfer does not take place within thirty minutes, the order is cancelled.
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