Danfoss VLT AutomationDrive EZ FC 321 Installation Manual page 6

VLT®AutomationDrive EZ FC 321
Installation Guide
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 1: Discharge Time
Voltage [V]
200–240
380–500
525–600
525–690
UNINTENDED START
When the drive is connected to the AC mains, DC supply, or load sharing, the motor may start at any time, causing risk of death,
serious injury, and equipment or property damage. The motor may start by activation of an external switch, a fieldbus command,
an input reference signal from the LCP or LOP, via remote operation using MCT 10 Set-up software, or after a cleared fault condi-
tion.
-
Press [Off] on the LCP before programming parameters.
-
Disconnect the drive from the mains whenever personal safety considerations make it necessary to avoid unintended motor
start.
-
Check that the drive, motor, and any driven equipment are in operational readiness.
INTERNAL FAILURE HAZARD
An internal failure in the drive can result in serious injury when the drive is not properly closed.
-
Ensure that all safety covers are in place and securely fastened before applying power.
Danfoss A/S © 2021.05
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
–
W A R N I N G
C A U T I O N
15
[hp]
7.5–50
15–100
15–100
–
AN354546796134en-000201 / 130R0954 | 5
Safety Instructions
20
60–100
125–200
–
125–200