SIEMENS
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Siemens D 21.4 · 2017
SIMOTICS servomotors
Technical definitions for AC motors
8
■
Overview
(continued)
Motor protection
PT1000 temperature sensor characteristics does not focus on
temperature range of importance (i.e. 0 to 300 degrees C)
The motor temperature for converter-fed motor operation is mea-
sured using the Pt1000 temperature sensor (see characteristic)
and the KTY84-130 in isolated cases.
This temperature sensor is a semi-conductor that changes its
resistance depending on temperature in accordance with a
defined curve.
Siemens converters calculate the motor temperature from the
resistance of the temperature sensor.
Their parameters can be set for specific alarm and shutdown
temperatures.
The temperature sensor is embedded in the winding overhang
of the motor in the same way as a PTC thermistor.
Motors without
an integrated DRIVE-CLiQ are now fitted with the
new Pt1000 temperature sensor. Exception 1FW6: The conver-
sion will not take place until mid-2017.
Motors with
an integrated DRIVE-CLiQ interface (1FT7/1FK7/
1PH8/1FW3) will generally be converted to Pt1000 from the start
of 2017.
Both sensors are evaluated in the SINAMICS S120 drive system
as a standard function.
If the motors are operated on converters that do not feature a
temperature sensor evaluation function, the temperature can be
evaluated with the external 3RS1040 temperature monitoring re-
lay.
For further information, please refer to Catalog IC 10 or visit the
Siemens Industry Mall.
/industrymall
Paint finish
SIMOTICS S-1FT7/S-1FK7 motors (up to SH 100) without a paint
finish have an impregnated resin coating. Motors with primer
have corrosion protection.
All motors can be painted over with commercially available
paints. Up to 2 additional paint coats are permissible.
T
u
kΩ
G_D211_EN_00342
0
°C
°F
200
400
600
800
1000
0
392
752
1112
1472
1832
0.5
0.1
0.3
1
1.5
1.385
2.120
2
2.5
R
Version
Suitability of paint finish for climate group
in accordance with IEC 60721, Part 2 – 1
Paint finish
Moderate
(expanded) for indoor and outdoor installation
with roof protection
Briefly
Continuously
up to 150 °C (302 °F)
up to 120 °C (248 °F)
Special
paint finish
Worldwide
(expanded) for outdoor installation
Briefly
Continuously
Also
up to 150 °C (302 °F)
up to 120 °C (248 °F)
For corrosive atmospheres up to 1% acid
and alkali concentration or permanent
dampness in sheltered rooms
© Siemens AG 2017