Installation Guide
Control Card VLT® FC Series
1 Introduction
1.1 Compatible Drives
This guide describes the replacement of the control card in:
• VLT® HVAC Drive FC 102.
• VLT® Refrigeration Drive FC 103.
• VLT® AQUA Drive FC 202.
• VLT® AutomationDrive FC 301/FC 302.
• VLT® Lift Drive LD 302.
1.2 Safety Instructions
Only Danfoss authorized, qualified personnel is allowed to repair this equipment.
WARNING
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 could 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 capacitors to discharge fully. The minimum waiting time is specified in table Discharge time and is also visible
on the nameplate on top of the drive.
-
Before performing any service or repair work, use an appropriate voltage measuring device to make sure that the capacitors
are fully discharged.
Table 1: Discharge Time, VLT® HVAC Drive FC 102
Voltage [V] Minimum waiting time (minutes)
4 7 15 20 30 40
200–240 1.1–3.7 kW
(1.50–5 hp)
– 5.5–45 kW
(7.5–60 hp)
– – –
380–480 1.1–7.5 kW
(1.50–10 hp)
– 11–90 kW
(15–121 hp)
– – 315–1000 kW
(450–1350 hp)
AN279051429263en-000101 / 130R0788 | 1
Danfoss A/S © 2018.09
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