WEG PSRW, User Manual

Page: 15 / 59

Mounting
PSRW | 3-3
3
3.5 INSTRUCTION TO CABLE AND TERMINALS
„
Terminal tightening torque: 5 ÷ 7 lb-in (0.6 ÷ 0.7 Nm).
„
Wire size range: AWG 12 ÷ 30, (solid/stranded).
„
Use 60/75 °C (140/167 °F) copper (Cu) conductor only.
„
We recommend the use of separate power supplies for the PSRW to other electrical power equipment (electric
motors, inverters, frequency converters) or other sources of disturbance.
„
Cables used for connections of longer than 50 m must have a cross-section of at least 1 mm
2
(AWG16).
ATTENTION!
Install the PSRW in an enclosure with a protection class of at least IP54.
ATTENTION!
Turn off the PSRW before connect the inputs/outputs.
ATTENTION!
The supply voltage to the units must be 24 Vdc ± 20 % (PELV, in compliance with the standard EN
60204-1 (
Chapter 6 TECHNICAL SPECIFICATION on page 6-1 )).
ATTENTION!
Do not use the PSRW like supply to external devices.
ATTENTION!
The same voltage reference (0 Vdc) must be used for all system components.
3.6 USB INPUT
The PSRW includes a USB 2.0 connector for connection to a personal computer and access the configurator tool
WPS manual available for download on the website:
www.weg.net .