14
Operating Instructions – AC Motors DR / DV / DT / DTE / DVE / Asynchrounos Servo Motors CT / CV
5
Special aspects in switching operation
Electrical Installation
5.6
Special aspects in switching operation
When the motors are used in switching operation, possible interference of the switch-
gear must be excluded by ensuring suitable wiring. According to EN 60204 (electrical
equipment of machines), motor windings must have interference suppression to protect
the numerical or programmable logic controllers. As it is primarily switching operations
that cause interference, SEW-EURODRIVE recommends installing protective circuitry
in the switching devices.
5.7
Environmental conditions during operation
Ambient
temperature
The temperature range of -20 °C to +40 °C must be ensured unless specified otherwise
on the nameplate. Motors intended for use in higher or lower ambient temperatures have
the appropriate designation on the nameplate.
Altitude
The maximum installation altitude of 1000 m above sea level must not be exceeded as
otherwise this causes a derating as specified in the following diagram.
Hazardous
radiation
Motors must not be subjected to hazardous radiation. Contact SEW-EURODRIVE if
necessary.
1000
2000
3000
4000
m
0.7
0.8
0.9
1.0
f
H