Technical Specifications E-11
DC590+ DRV Series DC Digital Drive
Terminal Information - Power (Frames 1-5)
Note: On Frame 1 and 2 units, L1, L2, L3, A+ and A- terminals are located on a separate Terminal Board. On Frame 3, 4 & 5 units, they are
busbar connections.
Terminal Terminal Function Signal Level Customer Terminals
Description Frames 1, 2 Frames 3, 4, 5
Armature
connection
negative
A-
Drive dc power output, reference Armature Negative connection to dc motor 550Vdc maximum with
respect to A+ (maximum
voltage dependent upon
the supply voltage, the
ratio being: Vout is
approximately equal to
1.15Vac supply
A- A-
Auxiliary N/C
Volt-Free MC
Contact : 1, 2
Used to indicate the status of the main contactor (L1, L2, L3). See TB4. - 1, 2
External field
supply FL1
External single phase ac Line 1 input to field bridge. 500V ac maximum,
50-60Hz line-to-line
FL1
External field
supply FL2
This feature
not available
on Frame 1
units
External single phase ac Line 2 input to field bridge.
Required AC Input Voltage = 1.11 x Nominal DC Output.
The field regulator will control the field current provided that the Nominal DC Output
voltage exceeds the field voltage by at least 10%.
i.e. V
AC
= 1.11 x V
DC
and V
DC
= 1.1 x V
FIELD
therefore V
AC
= 1.22 x V
FIELD
The external AC supply must be fitted with high speed fuses to protect the field regulator.
For drives with 10A field capability 10A fuses should be used.
Note: 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 transformer. L1 must be connected to FL1, and L2
to FL2.
500V ac maximum,
50-60Hz line-to-line
FL2
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