•
-
-
-
-
1 Introduction
1.1 Purpose of the Installation Guide
This Installation Guide describes the replacement and the software update for the control card in VLT® Compressor Drive CDS 803.
VLT
®
is a registered trademark for Danfoss A/S.
1.2 Safety Instructions
Only Danfoss authorized, qualified personnel are allowed to repair this equipment. The personnel must be familiar with the instruc-
tions and safety measures described in the VLT® HVAC Basic Drive FC 101 Service Manual.
W A R N I N G
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 the table
Discharge time
and is also visible
on the nameplate on the 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
Voltage [V]
Power range [kW (hp)]
Minimum waiting time (minutes)
3x200
6.0–10 (8.0–15)
15
3x400
6.0–7.5 (8.0–10)
4
3x400
10–30 (15–40)
15
1.3 Item Supplied
The following item is supplied:
Control card
Table 2: Code Numbers for Control Cards
Control card type
Code number
Control card, H3, H4, and H5
132B0700
Control card H6
132B1174
AN376926352883en-000101 / 130R1211 | 1
Danfoss A/S © 2021.05
Installation Guide
Control Card
VLT® Compressor Drive CDS 803
