General Safety Precautions - Danfoss VLT AutomationDrive EZ FC 321 Programming Manual

VLT® AutomationDrive EZ FC 321
Programming Guide

2.4 General Safety Precautions

HAZARDOUS VOLTAGE
AC drives contain hazardous voltage when connected to the AC mains or connected on the DC terminals. Failure to perform
installation, start-up, and maintenance by skilled personnel can result in death or serious injury.
-
Only skilled personnel must perform installation, start-up, and maintenance.
DISCHARGE TIME
The drive contains DC-link capacitors, which can remain charged even when the drive is not powered. High voltage can be
present even when the warning indicator lights are off.
Failure to wait the specified time after power has been removed before performing service or repair work can result in death or
serious injury.
-
Stop the motor.
-
Disconnect AC mains, permanent magnet type motors, and remote DC-link supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
-
Wait for the time specified in the Discharge Time tables for the capacitors to discharge fully before performing any service or
repair work.
-
Measure the voltage level to verify full discharge.
Table 2: Discharge Time
Voltage [V]
200–240
380–500
525–600
525–690
HOT SURFACES
The drive contains metal components that are still hot even after the drive has been powered off. Failure to observe the high
temperature symbol (yellow triangle) on the drive can result in serious burns.
-
Be aware that internal components, such as busbars, may be extremely hot even after the drive has been powered off.
-
Do not touch exterior areas that are marked by the high temperature symbol (yellow triangle). These areas are hot while the
drive is in use and immediately after being powered off.
16 | Danfoss A/S © 2021.08
W A R N I N G
W A R N I N G
Minimum waiting time (minutes)
4
0.34–5.0
1.0–10
1.0–10
–
C A U T I O N
15
[hp]
7.5–50
15–100
15–100
–
AU373327181955en-000101 / 130R1208
Safety Instructions
20
60–100
125–200
–
125–200