1. No category

Electrical Drives
FED and ECM – brushless EC motors
for engine cooling fan modules
Product description
The FED and ECM are brushless drives for engine
cooling fan modules. The electronic commutation
of the motors provides infinitely variable speed
control. Compared with conventional brushed
motors, the new drives offer advantages in terms
of efficiency, installation space, electromagnetic
compatibility, thermal resistance, and resilience
against environmental influences. The drives can
be optionally controlled via a PWM or LIN interface.
Rotor position detection is sensorless. The infinitely
variable speed control provides optimum on-deECM and FED
mand cooling output.
Customer benefits
Additional protective functions are available to
▶ High motor efficiency of > 80%
supplement the motor functions. Whenever the fan
sticks, the permitted voltage/temperature range is
▶ Lower fuel consumption and CO₂ emissions
exceeded, an overcurrent occurs, or internal errors
▶ Long service life > 2,000 h (no brush wear)
are detected, the motor is switched off. The new
▶ Minimal noise
drives cover a broad output range.
▶ Active and passive thermal cutout
Result
▶ Highly resilient to environmental influences
The reduced overall weight and increased efficiency
▶ Compact design
are important for reducing fuel consumption and,
▶ Enhanced diagnostics functions
in turn, carbon dioxide (CO₂) emissions. The
▶ Scalable power range from 300 W – 715 W
European Energy Efficiency Directive describes
brushless EC technology as the “best available
▶ Improved power density ≥ 220 W/kg
Motor data
Output
FED 300
FED 400
technology”.
ECM 600
ECM XL
300 Wel / 240 Wmech 400 Wel / 320 Wmech 630 Wel / 510 Wmech 715 Wel / 590 Wmech
Efficiency
> 80 %
> 80 %
> 80 %
> 80 %
Axial length
(excl. fan)
56 mm
60 mm
61 mm
66 mm
Diameter
135 mm
135 mm
145 mm
145 mm
–40 °C — 120 °C
–40 °C — 120 °C
–40 °C — 120 °C
–40 °C — 120 °C
1,470 g
1,580 g
2,400 g
2,820 g
≥ 220 W/g
≥ 220 W/g
220 W/g
220 W/g
Operating temperature
Weight incl. wiring
Power density
© Robert Bosch GmbH 2013. All rights reserved, also regarding any disposal,
exploitation, reproduction, editing, distribution, as well as in the event of
applications for industrial property rights.
Robert Bosch GmbH
Electrical Drives
Postfach 11 63
77183 Buehl
Germany
www.bosch-automotivetechnology.com
Printed in Germany
292000P10M-C/CCA-201307-De, En