Power Supply, Grounding And Shielding - ABB CP650-x Operating Instructions Manual

Power Supply, Grounding and Shielding

DC Power Connector, Female - R/C Terminal Blocks (XCFR2), manufactured by Weidmüller Inc.,
Cat. No. BLZ 5.08, torque 4.5 lb-in
Ensure that the power supply has enough power capacity for the operation of the equipment.
NOTE
The unit must always be grounded to earth. Grounding helps limit the effects of noise due to electromag-
netic interference on the control system.
1. Do the earth connection using either the screw or the faston terminal located near the power supply
terminal block. A label helps identify the ground connection.
2. Connect to ground the terminal 3 on the power supply terminal block.
3. The power supply circuit may be floating or grounded. In the latter case, connect to ground the power
source common as shown in the figure below with a dashed line.
When using the floating power scheme, note that the panes internally connects the power common to
ground with a 1 MΩ resistor in parallel with a 4,7 nF capacitor.
The power supply must have double or reinforced insulation.
Suggested wiring for the power supply.
All the electronic devices in the control system must be properly grounded. Grounding must be performed
according to applicable regulations.
Operating Instructions 17
CP600/Issue: 12.2011