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Installation Instructions
Items Supplied
•
®
VLT
24 V DC Supply MCB 106.
•
Plug (2 poles).
•
M3x6 screws (2).
Description
®
VLT
24 V DC Supply MCB 106
Table 1.2 Ordering Numbers
Tools Required
•
Torx 10 or slot screwdriver
Safety Instructions
WARNING
DISCHARGE TIME
The frequency converter contains DC-link capacitors which
can remain charged even when the frequency converter is
not powered. High voltage can be present even when the
warning LED 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 and remote DC-link supplies,
including battery back-ups, UPS, and DC-link
connections to other frequency converters.
•
Disconnect or lock PM motor.
•
Wait for the capacitors to discharge fully. The
minimum waiting time is specified in Table 1.3.
•
Before performing any service or repair work, use
an appropriate voltage measuring device to make
sure that the capacitors are fully discharged.
Power range
Voltage [V]
[kW (hp)]
200–240
0.37–3.7 (0.5–5)
0.37–7.5 (0.5–10)
380–480
11–22 (15–30)
Table 1.3 Discharge Time
2
®
VLT
24 V DC Supply MCB 106
®
VLT
Midi Drive FC 280
Ordering number
132B0368
Minimum waiting time
(minutes)
4
4
15
Danfoss A/S © 02/2019 All rights reserved.
Installation
1.
Stop the motor and the frequency converter, and
wait until the capacitors discharge completely. The
discharge time is specified in Table 1.3.
®
2.
Mount the VLT
24 V DC Supply MCB 106 with the
bus decoupling kit (supplied with VLT
280).
3.
Fasten with 2 M3x6 screws (supplied with VLT
Drive FC 280).
4.
Tighten the screws to 0.5–0.7 Nm (4.4–6.2 in-lb).
1
M3x6 screws supplied with VLT
2
Bus decoupling kit
®
3
VLT
24 V DC Supply MCB 106
Illustration 1.2 Mounting MCB 106 with Bus Decoupling Kit
®
5.
Mount the VLT
24 V DC Supply MCB 106 and the
bus decoupling kit assembly on the frequency
converter.
6.
Fasten with 2 M3x6 screws (supplied with VLT
DC Supply MCB 106).
7.
Tighten the screws to 0.5–0.7 Nm (4.4–6.2 in-lb).
®
Midi Drive FC
®
Midi
®
Midi Drive FC 280
®
24 V
MI07G202
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