MGE UPS Systems 30A Maintenance, Identification of anomalies, Transfer to the manual bypass

4. Maintenance

4.1 Identification of anomalies

General-alarm	S1 31 or S2 32	Static-switch	Buzzer	System output	Meaning
LED 21	LED	LED 33 or 34		LED 38
	-	-	Beeps	-	Internal STS fault.
					Source outside
-		-	Beeps	-	tolerances, load still
					supplied.
			Beeps		Source outside
				-
-		-			tolerances, no voltage.
					The load cannot be
					supplied by this source.
			Beeps	-
-	-				Static-switch fault.

-

-

-

-

Overload.

-

-

-

-

Load not supplied.

The meaning of all these anomalies are detailed on the display:

Select the alarm: the corresponding informations are displayed.

4.2 Transfer to the manual bypass

Q1	Q5 Q6	Q2
	1	1	4
	0	0
Q1BP	Q3	Q2BP
1	1	1
0	0	0
Q1	Q5 Q6	Q2
	1	1
	0	0
			6
Q1BP	Q3	Q2BP
1	1	1
0	0	0
Q1	Q5 Q6	Q2	1
	1	1
	0	0
			7
Q1BP	Q3	Q2BP
1		1
0	0	0

Transfer to the manual bypass for source S1:

1 - Manually transfer the load to source S1.

2 - Set switch Q2 4 to the OFF position (position 0).

3 - Set switch Q1BP 6 to the ON position (position 1).

The load is supplied by source S1 via the bypass.

4 - Set switches Q1 1 and Q3 7 to the OFF position (position 0).

The operation for source S2 is identical, using switches Q2 and Q2BP.

Interlocking of the bypass lines is ensured by use of a single key that must be inserted on the bypass switch to be operated.

34020113EN/AA - Page 25