Potentiometer Reference; Connecting The Motor; Grounding The Cable Shield - Danfoss VLT AutomationDrive EZ FC 321 Installation Manual

VLT®AutomationDrive EZ FC 321
Installation Guide

4.8 Potentiometer Reference

Voltage reference via a potentiometer
Reference source 1 = [1] Analog input 53 (default).
Terminal 53, low voltage = 0 V.
Terminal 53, high voltage = 10 V.
Terminal 53, low reference/feedback = 0 RPM.
Terminal 53, high reference/feedback = 1500 RPM.
Switch S201 = OFF (U)
Speed RP M
P 6-15
R ef . v oltage
P 6-11 10V
Illustration 9: Potentiometer Reference

4.9 Connecting the Motor

INDUCED VOLTAGE
Induced voltage from output motor cables that run together can charge equipment capacitors, even with the equipment turned
off and locked out/tagged out. Failure to run output motor cables separately or to use shielded cables could result in death or
serious injury.
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Run output motor cables separately or use shielded cables.
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Simultaneously lock out/tag out all the drives.
• Run output motor cables separately or
• Use shielded cables.
• Comply with local and national electrical codes for cable sizes. For maximum wire sizes, see
• Follow motor manufacturer wiring requirements.
• Motor wiring knockouts or access panels are provided at the base of IP55 (NEMA 12) units.
• Do not wire a starting or pole-changing device (for example a Dahlander motor or slip ring asynchronous motor) between the
drive and the motor.

4.9.1 Grounding the Cable Shield

Procedure
1. Strip a section of the outer cable insulation.
2. Position the stripped wire under the cable clamp to establish mechanical fixation and electrical contact between the cable
shield and ground.
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Electrical Installation
4.2 Cable Specifications.
AN354546796134en-000201 / 130R0954