Eurotherm 590A SERIES, Product Manual

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COOLING FAN CONNECTIONS
When the controller is fitted with heatsink cooling fans then these fans are connected to FAN LIVE (F27) FAN
NEUTRAL (F24) and where appropriate FAN COMMON (F23). If the auxiliary supply is 110/115V and two
cooling fans are fitted, the two fans are connected in parallel to FAN LIVE (F27) and FAN NEUTRAL (F24)
and similarly, if the auxiliary supply is 220/240V then the two fans are connected in series, the FAN COMMON
(F23) providing the centre point. Where a single fan is used this is matched to the auxiliary supply and therefore
always connected to FAN LIVE (F27) and FAN NEUTRAL (F24).
INSTRUCTIONS FOR REMOVAL OF 590S POWER SUPPLY BOARD UP TO 150HP
1) REMOVE ALL POWER TO THE DRIVE. You will need a Phillips head screwdriver, a flat head
screwdriver, and a needle nose pliers to remove the board.
2) PRIOR TO HANDLING ANY CIRCUIT BOARD, A GROUND STRAP SHOULD BE USED TO
PREVENT ELECTROSTATIC DISCHARGE FROM DAMAGING THE BOARD.
3) Remove controller door assembly from the front of the drive by disconnecting the two ribbon cables
from the power supply board and unclipping the hinge connectors holding the door to the chassis by using a flat
head screwdriver.
4) Remove the 2 thin black bars from the top and bottom of the stack assembly chassis. Do not remove
the screws holding the power board down. These should be removed after completing steps 5 and 6.
5) Carefully disconnect the following:
(a) All external wires connected to terminals D1 and through D8. BE CAREFUL NOT TO LOOSEN
THE GREEN TERMINAL BLOCKS FROM THE BOARD ITSELF.
(b) Red and brown wires connected to stake F16 and yellow and violet wires connected to stake
F8 (upper left part of board).
(c) Grey wire connected to terminal D3 (F6), field negative supply, and orange wire connected
to terminal D4 (F7), field positive supply (upper left part of board).
(d) Red, orange, and yellow gate wires located on the upper left part of the board.
(e) Green and yellow (RFI) ground wire (F17) (upper right part of board).
(f) Fan wires connected to stakes F23, F24, and F27, if necessary (upper right part of board).
(g) PLL, PLK, PLM plug in connectors, if necessary (left side of board).
(h) Violet coding wire adjacent to fuse FS2 and brown coding wire adjacent to fuse FS3 (lower
part of board).
6) Remove SCR Gate Leads using needle nose pliers. Gently pull the pink gate lead guide by gripping
the centre of the guide with pliers. DO NOT PULL THE GATE LEADS OUT BY THE WIRES. THIS
COULD DAMAGE THE GATE LEAD GUIDE AND RENDER THE GATE LEADS USELESS. CAUTION:
WHEN REINSTALLING THE POWER SUPPLY BOARD, REMEMBER THAT THE GATE LEAD GUIDES
MUST HAVE THE RED GATE LEAD WIRES FACING TO THE INSIDE AND YELLOW GATE LEAD
WIRES SHOULD BE FACING TO THE OUTSIDE.
7) Remove the screws and the top, centre, and bottom of the board. BE CAREFUL TO CAPTURE
LOCK WASHERS ON THE FIVE BOTTOM SCREWS.
8) Now everything is disconnected and the board can be removed. To remove the Power Supply Board, slide
it to the right hand side of the power chassis. Once the board is as far to the right as possible, tilt the left side of
the board up and out. Remove the board carefully, as there are some components that could be damaged if the
board is mishandled.
9) To reinstall a new power supply board, reverse the steps in the outlined procedure above.
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