Danfoss VLT Safety Option MCB 150 Installation Manual page 11

Installation Guide | VLT® Safety Option MCB 150/151
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.
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Disconnect AC mains, permanent magnet type motors, and remote DC-link supplies, including battery back-ups, UPS, and
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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
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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
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are fully discharged.
Table 2: Discharge Time
Voltage [V] Minimum waiting time (minutes)
4
200–240 0.25–3.7 kW (0.34–5 hp)
380–500 0.25–7.5 kW (0.34–10 hp)
525–600 0.75–7.5 kW (1–10 hp)
525–690 –
NO ELECTRICAL SAFETY
This option is suitable for performing mechanical work on the drive system or affected area of a machine only. It doesn NOT
provide electrical safety. Using the option for starting or stopping the drive can cause personal injury.
No NOT use the option as a control for starting or stopping the drive.
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Refer to ISO 12100 for more information about the application requirements.
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LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the drive properly can result in death or serious injury.
Ensure the correct grounding of the equipment by a certified electrical installer.
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The drive has more voltage sources than L1, L2, and L3 when load sharing (linking of DC link) or external 24 V DC are installed.
Danfoss A/S © 2018.09
W A R N I N G
7
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1.5–7.5 kW (2–10 hp)
W A R N I N G
W A R N I N G
N O T I C E
Legal Information an Safety
15
5.5–37 kW (7.5–50 hp)
11–75 kW (15–100 hp)
11–75 kW (15–100 hp)
11–75 kW (15–100 hp)
AQ279747441421en-000101 / 130R0292 | 11