en – Original instructions
27
6 Operation
In case of co-existance of two or more of the following conditions:
•
high
ambient
temperature
•
high
liquid
temperature
•
duty points insisting on unit maximum power
•
persisting
undervoltage
of
mains,
life expectancy of the unit may be affected and/or derating may occur: contact our Sales and
Service Department for more information.
6.1 Discharge time
WARNING:
Disconnect and lock out electrical power and wait for the minimum waiting time specified
below. Failure to wait the specified time after power has been removed before performing
service or repair could result in death or serious injury.
Frequency converters contain DC-link capacitors that can remain charged even when the
frequency converter is not powered. To avoid electrical hazards, disconnect:
•
AC
mains
•
Any permanent magnet type motors
•
Any remote DC-link power supplies, including battery backups, ups and DC-link connections
to other frequency converters.
Wait for the capacitors to discharge completely before performing any service or repair work.
Refer to the table 12 for wait times.
Table 12: Wait times
e-SM Drive model
Minimum waiting times [min]
103, 105, 107, 111, 115
4
303, 305, 307, 311, 315, 322
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