11-10
Technical Specifications
590+ Series DC Digital Converter
Terminal Information - Power Board (Frames 1, 2, 3, 4 & 5)
Note that 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.
Frame 3 units have terminal designations D1 to D8, shown in brackets in the Terminal
Number column of this table.
Terminal
Description
Terminal Function
Signal Level
Terminal
Number
Field Output
F-
DC supply for motor field connections.
The DC output voltage at these terminals will
depend upon the AC supply voltage and the
mode of field control.
Voltage Control
The output voltage will be determined by the ratio
parameter in the field variables. The relationship
between the dc output voltage and AC input
voltage is determined by the equation:-
Vdc
Vratio x VAC
100
The default value of Vratio is 90% hence the DC
output voltage will be the same as for a full wave
diode rectifier i.e., 90% is maximum output.
0.9 x Vac
F– (D3)
Field Output
F+
DC supply for motor field connections.
0.9 x Vac
F+ (D4)
Auxiliary supply
Aux N
Neutral
110-230V
50-60Hz line-to-line
CONTROL
N (D7)
Auxiliary supply
Aux L
Line
These terminals are the mains input connections
for the switch mode power supply and contactor
control relay supply. Refer to the Product Code
(Block 8) for the specified auxiliary voltage. Refer
to Cooling, page 11-19 when using separate ac
fans, (Frame H units).
110-230V
50-60Hz line-to-line
L (D8)
Main contactor
coil
Con L
Line
This terminal is the switched output from the
contactor control relay and is derived from the
auxiliary supply at terminal D8. The output is
internally fused at 3A hence contactor coils
having a high pick-up current must be operated
via a slave relay.
Note: When using a Slave Relay, the contacts of
the Contactor Control Relay are internally
suppressed by a series connected resistor (680
Ohms) and capacitor (33μF) to protect the relay
contacts. Users should be aware that when the
Contactor Control Relay is “De-energised”, a
leakage current of approximately 2mA @ 220V
can be expected and this should be considered
when interfacing to these terminals. Typically,
there could be the energisation of very sensitive
relays.
Auxiliary Supply Voltage
EXT
CONTACTOR
3 (D5)
Main contactor
coil
Con N
Neutral
This terminal is internally connected to the
auxiliary supply neutral and provides a
convenient connection point for the contactor coil
neutral connection.
Auxiliary Supply Voltage
4 (D6)