Linear actuators RA 600
strokes from 100 to 600 mm
version with limit switch or stroke measuring system
RA linear actuators are used for electrically-operated adjustments and as actuating elements in applications with control-oriented demands in short-time service.
Description
Linear actuators RA 600 consist of a 24 VDC direct current drive, whose drive energy is transferred over a snail transmission and a spindle stroke transmission to the pushing rod.
The self-locking spindle lifting gear stops the actuator in case of power failure and maintains it safely in the reached position.
Features of the sturdy design are the generous dimensioning of the actuator and the solid design of the housing.
As an alternative to the code class IP 66 also a press and splash water protection as per code class IP 69K is available.
Linear actuators RA600 are protected against corrosion and function without any troubles also in rough operating and environmental conditions. Since they are maintenance-free, this is permanently guaranteed.
The version with limit switches is equipped with 2 sensors, that prevent an unintentional movement to the mechanical stroke ends and thus the overload of the mechanics.
The version with stroke measuring system allows the realisation of control-oriented applications and the operation of several linear actuators in synchronism. The stroke ends are freely definable by means of the digital signal.
Operation
Linear actuators RA 600 can optionally be operated by hand panel or foot switch and supply units of the accessory programme as per data sheet M8.200 with touch control or by an external control with 24 V output.
The version with stroke measuring system delivers the user incremental signals of the stroke measuring system.
Version with limit switches
The version with limit switches has 2 integrated Hall-effect sensors, which automatically switch off the motor brake as soon as the upper or lower stroke end position is obtained. This guarantees that the linear actuator does not mechanically push against the stop. At the plug-type connector of this version the pins 3 and 4 have to be connected to 24 VDC. By changing the polarity, switching over from retracting to extending is effected.
Version with stroke measuring system
The stroke of linear actuators is transmitted by potential-free square wave signals, which are generated by the rotating spindle, to an external control. An additional reference point, that initialises the stroke measuring system, is in the retracted stroke end position. This reference point can also be used to switch off the retracted stroke end position.
With the incremental stroke measuring system control-oriented applications and the compound of several linear actuators in synchronism can be realised. Due to the incremental acquisition of the position, faults of linearity are excluded.
Supply units as per page M8.200 treat the actuators and the user's connecting construction with care due to a special control and thus contribute to the increase of the service life.
Material
body: polyamide, black, glass fibre reinforced
guiding tube: aluminium, naturally anodised
pushing rod: stainless steel
Available variants
Linear actuators RA 600 are optionally available in the variants:
• 12 V supply voltage
• absolute stroke measuring system (up to 200 mm stroke)
• reinforced for high vibration load
• especially protected against corrosion
• LIN-BUS control
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Properties
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Description
Bearing sleeve for fork eye
DU bushing Ø12 / Ø10
see page L1.101
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Item no.
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CAD data
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Description
Control module
for 1 modulog module with code letter E
supply voltage: 230 VAC, 50 Hz
operating voltage: 24 VDC
code class IP66
connections: plug-in connector
as per data sheet M8.200
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Item no.
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CAD data
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Description
Electrical hand panel
with up/down function
connecting cable: coiled cable 1,6 m
code class IP 66
material housing: polyamide
as per data sheet M8.203
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Item no.
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CAD data
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Description
Electrical foot switch
with up/down function
connecting cable: 3 m, smooth with connector
code class IP 65
material housing: polyamide
as per data sheet M8.203
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Item no.
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CAD data
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Description
Mains cable
cable version: smooth with shaped plug
nominal voltage: 230 VAC
length: 3 m
material of isolation: PUR
as per data sheet M8.203
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Item no.
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CAD data
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Description
Device plug
to connect ROEMHELD actuators
to user control
as per data sheet M8.203
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