Stober PK - Selection Tables

11.2 Selection tables
The technical data specified in the selection tables applies to:
• Installation altitudes up to 1000m above sea level
• Surrounding temperatures from −15°C to +40°C
• Operation on a STOBER drive controller
• DC link voltage U
ZK
= DC 540V
• Coating: RAL 9005 Jet black, matte
In addition, the technical data applies to an uninsulated design with the following thermal mounting condi-
tions:
Type Dimensions of steel mounting flange
(thickness x width x height)
Convection surface area
Steel mounting flange
EZ2 − EZ5 23 x 210 x 275mm 0.16m
2
EZ7 − EZ8 28 x 300 x 400mm 0.3m
2
Note the differing ambient conditions in Chapter Derating
Formula symbols
An explanation of the formula symbols can be found in Chapter Symbols in formulas.
Observe the additional information on the following formula symbols:
• I
0
= RMS value of the line-to-line current when stall torque M
0
is generated (tolerance ±5%).
• I
max
= RMS value of the short-term maximum permitted line-to-line current when maximum torque M
max
is generated (tolerance ±5%). Exceeding I
max
may lead to irreversible damage (demagnetization) of the
rotor.
• I
N
= RMS value of the line-to-line current when nominal torque M
N
is generated at the nominal point
(tolerance ±5%).
• M
0
= Torque that a motor is continuously able to deliver at a speed of 10 rpm (tolerance ±5%). At a
speed of 0 rpm, a minor continuous torque has to be taken into account. Contact your STOBER cus-
tomer advisor for such an application.
11 EZsynchronous servo motors 11.2 Selection tables
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