Installing the Drive 3-21
DC590+ Series DC Digital Drive
Power Connections continued
External AC Field
FL1
FL2
Connect the
external field
supply to
terminals FL1
and FL2.
Frame 3: Terminals FL1 & FL2 = D1 & D2
(Not available on Frame 1 units)
Used if an external field supply is required to the controller for application reasons. The magnitude of this voltage is
determined by the desired field voltage. The supply must be protected externally with suitable fuses.
IMPORTANT
The connection of the controller and the external field supply must be consistent when
using an externally supplied field regulator. Always derive the 1phase, 50/60Hz supply
from the L1 (Red) and L2 (Yellow) phases of the main power supply, directly or indirectly
through a single-phase transformer, with the Red phase connected to terminal FL1 and the
Yellow phase to terminal FL2.
NOTE You must provide branch circuit and overload protection.
To change the drive from an internal to an external field type refer to "42HMotor Field Options", page 43H3-30.
Auxiliary Supply
L
N
Connect the
control supply
to terminals L
(Live) and N
(Neutral).
Frame 3: Terminals L & N = D8 & D7
Single phase, 110/240V ac, 50/60Hz.
Note: The auxiliary supply chosen must equate to the contactor coil voltage used.
IMPORTANT
The auxiliary supply terminals must be connected directly to the incoming supply via a
fuse or circuit breaker. No series sequencing switches or contacts are permitted without
consultation from SSD Drives.
Use suitable external fuse protection: the steady state current absorbed by the controller is nominal, the external fuse
is determined chiefly by considering the contactor holding VA and the controller cooling fans. (Frame H fans are
powered separately).
Refer to Appendix E: “Technical Specifications” - Power Supply Fuses.
These terminals must be used
on Frame 6 and Frame H drives
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