3-20 Installing the Drive
DC590+ DRV Series DC Digital Drive
FRAME 2 : Terminal Board - PCB Reference AH470330
The position of the jumper selects the board to use either an internal or external motor field.
FL1 FL2 F+ F- M1 M2 M3
Motor Vent Fan Circuit Breaker
PLG1 to Power Board PLG2 to Power Board PLG3 to Power Board
External Field Selector Plug
Terminal Board
L N 3 4 TH1TH2
FL1 FL2
Field Bridge Field Bridge
L1 L2
Jumper selecting external field Jumper selecting internal field
L1 L2
FL1 FL2
fitted pin
non-fitted pin
AUX.
CONT.
Internal Motor Field (default for this board)
Terminals F+ and F-, the motor field outputs, are energised when the 3-phase supply is connected to L1/L2/L3. Terminals FL1 and FL2 are not
required. The internal motor field supply is fused by 10A fuses, FS5 & FS6.
External Motor Field
Terminals FL1 and FL2 can be used for external ac supply connection for the Motor Field Supply. You should provide suitably rated external, fast-
acting semi-conductor fusing, to a maximum of 10A.
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 connected to FL1, and L2 connected to FL2.
The external field supply can now be connected and power restored to the drive.
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