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3-8
Installing the Converter
590+ Series DC Digital Converter
Minimum Connection Requirements
IMPORTANT:
If in doubt about the connection of the DC motor to the drive, contact SSD Drives.
Note:
Because of the complexity of showing all possible configurations, this Chapter deals only
with a `general purpose’ operation as a basic speed controller. Special wiring options
usually form part of a customer-specific system and connection details will be provided
separately.
Minimum connections to operate the drive safely are shown using bold lines in the
following circuit diagrams. These connections are highlighted in text with the
symbol opposite. The remaining connections are not necessary for a “quick start-
up”.
The Converter is using the default Armature Voltage feedback when following the
`minimum connection’ instructions.
WARNING!
Power terminals carry electrical voltage which can be lethal. Never work on any
control equipment or motors without first removing all power supplies from the
equipment.
Caution
Make sure all wiring connections meet or exceed applicable local and National Electrical
Codes. Be sure to fit branch circuit and motor overload protection.
IMPORTANT:
If fitting your own "Power On" indicator lamp, annunciator, etc., this should be switched
by an auxiliary contactor of the main contactor, not by the controller auxiliary relay.
To avoid damaging the drive NEVER carry out high voltage resistance or dielectric
strength tests without first completely disconnecting the drive from the circuit being tested.
Power Cables
Note:
Refer to Chapter 11: “Technical Specifications” - Wire Sizes and Termination Tightening
Torques.
x
minimum rating of 1.1 x full load current (Europe)
x
minimum rating of 1.25 x full load current (UL)
Control Wiring
Note:
Refer to Chapter 11: “Technical Specifications” for Control Terminal information.
x
Control wiring must have a minimum cross-section area of 0.75mm
2
(18AWG).
x
Use screened control cables to comply with EMC requirements.
x
Feed the control cables into the drive and connect to the control terminals. Refer to the
connection label on the inside of the terminal cover. Close the terminal cover.
IMPORTANT:
All connections made to terminal blocks A, B and C must be isolated signal voltages.
Important Connections
The following connections must be made for the drive to run:
x
Terminals TH1 and TH2 must be linked if a thermostat is not fitted.
x
Terminals C1 and C2 must be linked if an External Trip interlock is not required.