Operation principle and hardware description 29LayoutFrames R0…R4The layout of a frame R0 drive is presented below. The construction of framesR1…R3 differs to some extent.1 Mounting points (4 pieces)2 Cover3 Cover screw4 Assistant control panel5 Control panel connection6 Cold configuration connection for CCA-017 Power OK and Fault LEDs. See sectionLEDs on page 130.8 I/O connections. See section Externalcontrol connection terminals, framesR0…R4 on page 32.9 Varistor grounding switch (VAR)10 EMC filter grounding switch (EMC).R0…R2: On the right side of the drive.R3: On the front, near the I/Oconnections.See Checking the compatibility with IT(ungrounded) and corner-grounded TNsystems on page 75.11 Input power connection (L1, L2, L3),motor connection (T1/U, T2/V, T3/W) andbrake connection (R-, R+)12 PE connection (power line)13 Grounding connection (motor)14 Additional grounding connection15 Lead-through plate16 Main cooling fan17 Cable tie mounts for I/O cables56789816 151412113PE141017R0112 1317