Inverter Driver/Feedback Interface Part Nº Osde0071 - Powertronix Quasar Service Manual

PCB Replacement Procedures
7.9.3 - Inverter Driver/Feedback Interface Part Nº 0SDE0071 (PCB Label: CS0071 Exx)
Leave 2 Pins
Clear on J21
J22
J17
LD2
DC Offset
LINK J1A J2A J3A
Note: J21 connector leaves the two rear pins free on the plug when reconnecting.
7 - 30
LINK J5A J4A
J21
P1
(bypass V +10%)
1. Power down the UPS and carry out the DC bus discharge routine.
2. Gain access to the UPS power section by removing the top and side covers.
3. Mark all connectors before removal.
4. Disconnect connectors J19, J15 and J7.
5. Disconnect SCR driver connectors J1 to J6.
6. Disconnect the inverter IGBT gate drive connectors J9, J11 and J12.
7. Disconnect the converter IGBT gate drive lead J14.
8. Disconnect the input SCR gate drive connector J16.
9. Disconnect connectors J8, J10, J13 and J18.
10. Disconnect J21.
11. Remove secondary DC bus voltage feedback fast on connectors.
a) ve feedback F1 & F15.
b) +ve feedback F2 & F16.
12. Remove Primary DC bus voltage feedback fast on connectors
a) ve feedback F11.
b) +ve feedback F13.
13. Remove Input SCR output feedback fast on connectors.
a) ve feedback F12.
b) +ve feedback F14.
J18 J13 J10
J23
(bypass V 10%)
R69
(See 13.)
Service Manual
J7 J8
LD1
P1
f Rotation
R66
(See 13.)
3x3 UPS
Issue 2 - November 2001
N8
2 red wires
N12
black wire
N16
brown wire
R149
(See 13.)