Installing the Drive 3-33
DC590+ Series DC Digital Drive
Power Board – PCB Reference 466701 (Frames 4 & 5)
This power board (printed with the above number) can be altered for use with either an internal or external motor field supply:
Internal Motor Field (default for this board)
Terminals F+ and F-, the motor field outputs, are energised when the 3-phase supply
to L1/L2/L3 is energised and the internal motor field is used. Terminals FL1 and
FL2 are not energised. The internal motor field supply is fused by the 30A fuses FS1
and FS2.
External Motor Field Connections
Terminals FL1 and FL2 on the Power Board can be used for an external ac supply
connection for the Motor Field Supply.
A simple re-wiring procedure disconnects the internal field supply and prepares
terminals FL1 and FL2 for the external ac supply connection.
You should provide suitably rated external, fast-acting semi-conductor fusing, to a
maximum of 30A.
Re-Wiring Procedure
WARNING
Isolate all power to the drive.
1. Loosen the control board fixing screws (2 off) and position the control board to allow access to the power board.
2. Remove the red link from the Faston connector “F2” and connect it to the staging post “F3” nearby (EX L1).
3. Remove the yellow link wire from the Faston connector “F5” and connect it to the staging post “F6” nearby (EX L2).
Caution
When using an external ac input it is important to have the correct phase relationship on the terminals. The supply must be
derived from L1 (Red) and L2 (Yellow) phases directly or indirectly through a single phase transformer.
L1 must be in phase with FL1, and L2 must be in phase with FL2.
The external field supply can now be connected and power restored to the drive.
F1
F13
F14
F3
F6
F4
F2
F5
FL1 FL2 F+ F-
yellow
red
EX A- EX A+
EX L1
EX L2
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