Eaton Rapid Link RAMO5, Manual

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6 RASP5 Speed controller
6.2 Features
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Rapid Link 5 · RAMO5 · RASP5 10/19 MN034004EN www.eaton.com
6.2 Features
RASP5 (Rapid 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 fre-
quency/speed range and is popular for hoist and rotary drives. The fixed
speed value (standard: Four, maximum eight) enables process-controlled
speeds.
The frequency control (gentle start-up) protects the motor and the mechani-
cal system and relieves the power supply (no current peaks).
RASP5 is available in four power sizes: From 2.4 TO 8.5 A.
The internal electronic motor protection (I
2
t controller) allows the protected
operation of three-phase motors in the range of 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. This enables the so-called thermistor motor
protection to be implemented in conjunction with the integrated thermistor
monitoring.
The built-in transistor switch allows actuation of spring-loaded brakes with
DC air solenoid valve.
For the brake rectifier, a controlled supply voltage of 180 V DC, 230 V /
277 V AC or 400 V / 480 V AC output. In addition versions of RASP5 with
built-in braking resistance also allow dynamic braking.
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DANGER
RASP5 is not intended to be opened by the user.
Open only in voltage-free state!