Grounding the Robot

NOTE: When grounding the robot, use cables that comply with the applicable local standards, for example, cables that conform to NEC 70 / NFPA 79 in the USA.

Step

Action

1

Feed and fasten the ground cable (protective earth ground) to the ground connection (1) of the robot housing. The ground connections are marked with the following symbol:

VRKP••••WD / VRKP••••NO
VRKP••••WF
VRKP••••NC

2

Verify the correct routing and fastening of the preconnected ground connection between the motors (2) and the robot housing.

Tightening torque: 2.5 Nm (22 lbf-in)

NOTE:

  • The graphic is an example for the position of the ground connection at a main axis motor.

  • The external protective ground connection wiring is determined by a number of variables. Read the hazard message at the end of this table.

3

Only for VRKP•L0•WD / VRKP•L0•NO:

Fasten the ground cable to the ground connection (3) of the Lexium 62 Distribution Box (IEC 60417 - 5019 symbol).

Tightening torque: 3.5 Nm (31 lbf-in)

4

Only for robots with a motorized module:

Ground the motorized module according to the cabling instructions of the respective module:

5

Verify the correct routing and fastening of the cables.

  DANGER
ELECTRIC SHOCK DUE TO IMPROPER GROUNDING
  • Ground robot components in accordance with local, regional and/or national standards and regulations at a single, central point.
  • Verify that the motors are connected to the central ground.
Failure to follow these instructions will result in death or serious injury.

Multipoint grounding is permissible if connections are made to an equipotential ground plane dimensioned to help avoid cable shield damage in the event of power system short-circuit currents.