52 Electrical installation Connection procedure1. Strip the input power cable. Ground the bare shield of the cable (if any) 360degrees under the grounding clamp. Fasten the grounding conductor (PE) of theinput power cable under the grounding clamp. Connect the phase conductors tothe U1, V1 and W1 terminals. Use a tightening torque of 0.8 N·m (7 lbf·in) forframe sizes R0…R2, 1.7 N·m (15 lbf·in) for R3 and 2.5 N·m (22 lbf·in) for R4.3. Strip the input power cable. Ground the bare shield of the cable (if any) 360degrees under the grounding clamp. Twist the shield to form as short a pigtail aspossible. Fasten the twisted shield under the grounding clamp. Connect thephase conductors to the U2, V2 and W2 terminals. Use a tightening torque of0.8 N·m (7 lbf·in) for frame sizes R0…R2, 1.7 N·m (15 lbf·in) for R3 and 2.5 N·m(22 lbf·in) for R4.2. Connect the optional brake resistor to the BRK+ and BRK- terminals with ashielded cable using the same procedure as for the motor cable in the previousstep.3. Secure the cables outside the drive mechanically.1 3 221
