Eurotherm 590A SERIES, Product Manual

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590 POWER BOARD (AH385621)
Replaces AH055050 From August 1995.
Power supply specification as AH385851 described above.
Product Type
590/7200 (4Q 720amp)
591/7200 (2Q 720amp)
Subject of enhancement
Power Board now updated to AH385621U001 (Sep 1995)
This item has been updated to include improvements including:
Surface Mount Technology
Revised SMPS (as 590/592)
Removal of Coding Module
Compatibility
This part does not allow upgrading of existing Power Board (AH055050/385128). Repair/Service of existing
product will continue to use identical parts as originally fitted.
Additions to Technical Manual
Subject-External Supply Terminals D1 & D2
These terminals are used for the External AC Supply connection (for the Motor Field Supply) when the Internal
AC Supply is unused. The following actions must be taken:
1) These terminals are now energised when “Internal Field Supply” option is used, and the 3 phase supply
(L1/2/3) is energised. Protection is available via the on-board Field supply fuses FS2, FS3.
2) When utilising the “External AC Supply” connection, internal wiring links must be removed and connected to
staging posts provided.
The internal wiring links (Red and Yellow) are identified by the following procedure
a) Isolate the Drive
b) Loosen control board fixing screws (2 off) and orientate control board to allow access to power board.
c) Identify internal field supply link (colour-Red) where it is connected by “Faston” at the left hand side of
Terminal D1. Remove this link from the faston connection and place on staging post “F8” located to the left.
(To
enable positive identification of the correct link, Faston F8 should now be connected to FS2, and L1. Verify by
continuity test)
d) Identify internal field supply link (colour-Yellow) where it is connected by “Faston” at the mid-point below
terminals D1 & D2. Remove this link from the faston connection and place on staging post “F16” located to the
left.
(To enable positive identification of the correct link, Faston F16 should now be connected to FS3, and L2.
Verify by continuity test)
e) The External Field Supply can now be connected via externally mounted fast acting 20 Amp fuses. (Note that
the phase of D1 must be derived from L1, and the phase of D2 must be derived from L2).
POWER BOARD AH385621
D1 D2 D3 D4
Red
F8
F16
tag.
Yellow
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