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6 RASP5 speed controller
6.2 Features
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Rapid Link 5 · RAMO5 · RASP5 05/20 MN034004EN www.eaton.com
6.2 Features
RASP5 ( Ra pid Link speed control unit ) is an electronic speed controller for
the frequency-controlled start and operation of three-phase motors up to
8.5 A (4 kW at 400 V). RASP5 supplies a constant torque across the entire
frequency/speed range and is primarily used for hoist drives and rotary dri-
ves. The fixed speed values (standard: four, maximum: eight) allow for
process-controlled speeds.
The frequency control (soft starting) is gentle on motor, mechanics and
energy supply (no current peaks).
RASP5 is available in four rating sizes from 2.4 A to 8.5 A.
The internal electronic motor protection (I
t
controller) allows the protected
operation of three-phase motors in the range from 0.2 A (= 0.75 kW at 400 V)
to 8.5 A (= 4 kW at 400 V). The startup current and thus almost proportionally
the starting torque of the motor enables values up to 200 % for 2 s every
20 s and 150 % for 60 s every 600 s. In connection with the integrated ther-
mistor monitoring, a so-called “full motor protection” can be guaranteed.
The built-in transistor switch allows actuation of spring-loaded brakes with
DC air solenoid valve. A controlled supply voltage of 180 V DC, 230 V /
277 V AC or 400 V / 480 V AC is output for the brake rectifier.
In addition, versions of RASP5 with built-in brake resistors also allow dyna-
mic braking.
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DANGER
Open only in voltage-free state!