Parker 590 series Product Manual page 189

Terminal Information (Power Board)
Terminal Terminal Function
Description
Main contactor coil 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: The contacts of the Contactor Control Relay are
suppressed by a series connected resistor (680 Ohms) and
capacitor (22nF) to protect the relay contacts. Users should be
aware that when the contactor Control Relay is "De-energised",
a leakage current of approximately 2mA can be expected and
this should be considered when interfacing to these terminals.
Typically, there could be the energisation of very sensitive relays.
Main contactor coil 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 Neutral
Auxiliary supply
Line
These terminals are the mains input connections for the switch
mode power supply, contactor control relay supply and cooling
fan supply (when force cooled - refer to Chapter 13: "Standard
and Optional Equipment"). The voltage applied to these
terminals is Product Code dependent
590 Series DC Digital Converter
Technical Specifications
Signal Level
110/240V
50-60Hz line-to-line
110/240V
50-60Hz line-to-line
110/240V
50-60Hz line-to-line
110/240V
50-60Hz line-to-line
11-9
Terminal
Number
D5
D6
D7
D8