Connecting Motor, Mains, And Ground Cables; Power Cabling And Grounding Considerations - Danfoss VLT FC 103 Operating

VLT® Refrigeration Drive FC 103
Operating Guide
Character posi- Code
tion
DE
The signal light and reset button option includes signal lights on the control compartment door for run and fault states of the AC
drive. The door also has a button for the reset function of the drive.
5.7.6.10 Emergency Switch Off
Table 63: Door-mounted Option Type Codes
Character position Code
28–29 D2
DA
The emergency switch off option uses an input contactor to disconnect the drive from mains. Pushing the emergency stop push-
button on the control compartment door opens the control circuit of the input contactor.
5.7.6.11 STO with Emergency Push-button on Door
Table 64: Door-mounted Option Type Codes
Character position Code
28–29 D3
DB
This option provides the STO (Safe Torque Off) function via an emergency push-button mounted on the door of the control com-
partment. The control terminals of the control card are extended from inside the drive module and routed out to the terminal block
set -XD2 in the control compartment. The emergency push-button is wired between terminals -XD2.10 and -XD2.19.
Activating the emergency push-button prevents the unit from generating the voltage required to rotate the motor. The option pro-
vides:
• Safe Torque Off (STO), as defined by EN IEC 61800-5-2.
• Stop Category 0, as defined in EN 60204-1.

5.8 Connecting Motor, Mains, and Ground Cables

5.8.1 Power Cabling and Grounding Considerations

Motor and mains connections
• Size the wiring according to the input current of the drive. For maximum wire sizes, see the Electrical Data section.
• Use cables rated for 75 °C (167 °F) of insulation for UL installations.
• Comply with local and national electrical codes for cable sizes.
• Follow motor manufacturer wiring requirements.
• Motor wiring knockouts or access panels are provided on the pedestal of IP21/IP54 (NEMA 1/NEMA 12) units.
• Do not wire a starting or pole-changing device (for example Dahlander motor or slip ring induction motor) between the drive
and the motor.
Ground connection
• Ground the drive in accordance with applicable standards and directives.
• Use a dedicated ground wire for input power, motor power, and control wiring.
• Do not ground 1 drive to another in a daisy chain fashion.
• Keep the ground wire connections as short as possible.
• Follow motor manufacturer wiring requirements.
Danfoss A/S © 2020.09
Description
Signal lights and reset button + STO/SS1 with emergency push-button + safely limited speed (HTL
encoder)
Description
Emergency switch off + emergency push-button
Signal lights and reset button + emergency switch off and emergency push-button
Description
STO with emergency push-button (no functional safety)
Signal lights and reset button + STO with emergency push-button (no functional safety)
Electrical Installation
AQ357954340588en-000201 / 130R0881 | 81