Motors-D81.1-complete-English-06-2020

© Siemens 2020
SIMOTICS XP 1MB1, 1MB5 explosion-protected motors
Orientation
■ Technical specifications
Explosion-protected separately driven fan
The use of a separately driven fan is recommended to increase
motor utilization at low speeds or to limit noise generation at
speeds significantly higher than the synchronous speed. Both of
these results can only be achieved with converter operation.
Please inquire about traction and vibratory operation.
In the case of explosion-protected motors, the explosionprotected
separately driven fan is available already mounted.
Order code F70
Notes:
• The order code F70 applies to all types of protection because
the type of protection is already defined by the article number
of the motor. Order code F70 determines the additional
charge for the separately driven fan in the assigned type of
protection.
• The motor operating data with the explosion-protected
separately driven fan is available in the "Drive Technology
Configurator" (DT Configurator).
The supply voltage for the explosion-protected motors with
separately driven fan is specified as follows:
Type 2CW2 has a wide-range voltage winding
(see page 5/21 "Technical specifications of separately driven
fans for 1MB1 explosion-protected motors (frame sizes 100 to
200) in the Ex tc (Zone 22) and Ex ec (Zone 2) versions").
These explosion-protected motors with separately driven fan up
to frame size 200 have a rated voltage (rated voltage range) with
tolerances according to IEC/EN 60034-1, range A.
Technical specifications of separately driven fans for 1MB1.5
and 1MB5.5 explosion-protected motors (frame sizes 225 to
355) in the Ex db eb (Zone 1) versions
5
Frame size Voltage Frequency P max I max
V Hz kW A
225 400 50 0.55 1.34
250
280 460 60 1.23
315
355 400 50 1.1 2.25
460 60 1.98
A rating plate with the operating data is fitted to each explosionprotected
motor with separately driven fan.
The type of protection of the explosion-protected motor with separately
driven fan corresponds to that of the associated explosionprotected
basic motor. Please note the direction of rotation of the
separately driven fan (axial-flow fan) when connecting it.
Please inquire regarding coolant temperatures outside the range
–20 to +40 °C.
The Ex ec/Ex tc motor with separately driven fan has the degree
of protection IP55 as standard; Ex tb: IP65 (higher degrees of
protection with Ex ec are available on request).
Motors with a separately driven fan must be equipped with a
PTC thermistor as motor protection (15th position of the Article
No.): In the event of a fault in the separately driven fan, the PTC
thermistor must reliably trip the 1MB1 or 1MB5 explosionprotected
motors.
For assignments and article numbers, see the tables "Technical
specifications of separately driven fans for explosion-protected
motors 1MB1…" on the following pages. A rating plate listing all
the important data is fitted to the separately driven fan. Please
inquire in the case of supply voltages outside of the rated voltage
range. Please note the direction of rotation of the separately
driven fan (axial-flow fan) when connecting it. The permissible
coolant temperatures are CT min –20 °C and CT max +40 °C.
Lower coolant temperatures are available on request.
When the separately driven fan is mounted, the length of the motor
increases by l. For an explanation of the additional dimensions
and weights, see "Dimensions and weights of explosionprotected
separately driven fans".
5/20 Siemens D 81.1 · 06/2020