DRVS
Semi-rotary drive
Festo SE & Co. KG
Ruiter Straße 82
73734 Esslingen
Deutschland
+49 711 347-0
www.festo.com
Operating instructions
8158337
2021-10
[8158339]
Translation of the original instructions
© 2021 all rights reserved to Festo SE & Co. KG
1Applicable Documents
All available documents for the product è www.festo.com/sp.
2 Safety
2.1 Safety instructions
–Only use the product in its original condition without unauthorised modifica-
tions.
–Take into account the ambient conditions at the location of use.
–Only use the product if it is in perfect technical condition.
–Store the product in a cool, dry environment protected from UV and corrosion.
Keep storage times short.
–Before working on the product, switch off the compressed air supply and lock it
to prevent it from being switched on again.
2.2 Intended use
The product is intended to swivel payloads that must execute a defined angular
movement.
2.3 Foreseeable misuse
Do not exceed the maximum permissible transverse loads è 11 Technical data.
2.4 Training of qualified personnel
Work on the product may only be carried out by qualified personnel who can
evaluate the work and detect dangers. The qualified personnel have skills and
experience in dealing with pneumatic (open-loop) control technology.
3 Additional information
–Contact the regional Festo contact if you have technical problems
è www.festo.com.
–Accessories è www.festo.com/catalogue.
4 Function
The pneumatic ports [4] are pressurised alternately, causing the inner sash in the
housing to swivel back and forth. The swivel motion is transmitted to the drive
shaft [1]. The drive shaft serves as an interface and connecting element for the
extension elements push-on flange FWSR and push-on flange DARF. The square
[2] serves as a connecting element for the extension elements sensors SRBS, stop
kit KSM and stop kit DADP.
5 Product design
Fig. 1: Product design
Output shaft
Square
Thread
depending on size (3x, 4x)
Pneumatic port (2x)
6 Assembly
1. Mount the product on the threads [3].
2. Push the payload onto the drive shaft and fasten it.
7 Installation
Use one-way flow control valves to set the swivel speed.
•Screw the one-way flow control valves into the pneumatic ports [4].
8 Commissioning
For use with reduced particle emission:
Clean the product with a clean, soft cloth and non-abrasive cleaning agents.
1. Close the one-way flow control valves completely.
2. Unscrew the one-way flow control valves one turn.
3. Pressurise the product slowly.
4. Start a test run.
5. Take the following into account in the test run:
–The swivel range
–The swivel speed
6. Make changes only when stationary.
7. Unscrew the one-way flow control valves until the required swivel speed
is reached. Do not fall below the minimum permissible swivel time
è www.festo.com/catalogue.
NOTICE
Dynamic characteristic values that are too high can lead to the destruction of
the product, e.g. internal vanes.
• Observe the mass moment of inertia and the maximum permissible swivel
frequency.
8. Terminate the test run.
9 Cleaning
Clean the product with a clean, soft cloth and non-abrasive cleaning agents.
For use with reduced particle emission:
–Remove abraded particles and soil from the product:
–Prior to initial commissioning
–Regularly during operation
10 Fault clearance
Fault description Cause Remedy
Uneven movement The flow control valves are
incorrectly adjusted.
Check the exhaust air flow con-
trol
Hard impacts at the end posi-
tion
Excessive residual energy –Select a lower rotational
speed.
–Use external shock
absorbers.
–Only drive against the
residual air cushion on the
exhaust air side.
–Select a smaller payload
mass.
The output shaft does not
remain in the end position.
Tab. 1: Fault clearance
11 Technical data
DRVS -6 -8 -12 -16
Pneumatic port M3 M5
Mounting position any
Design Rotary cylinder with rotary vane
Cushioning Elastic cushioning, at both ends
Ambient temperature [°C] 0 … 60
Storage temperature [°C] 0 … 20
Operating medium Compressed air to ISO 8573-1:2010 [7:4:4]
Information on operating
medium
lubricated operation possible, in which case lubricated
operation will always be required
Operating pressure [MPa] 0.35 … 0.8 0.25 … 0.8
[bar] 3.5 … 8 2.5 … 8
[psi] 50.75 … 116 36.25 … 116
Forces
Permissible impact force Fmax [N] 15 30 90 160
Theoretical torque at 0.6 MPa
(6 bar, 87 psi)
[N] 0.15 0.35 1 2
Max. permissible forces on the drive shaft
Axial force Fx[N] 10 20 25
Radial force Fz[N] 15 20 25 30
Mass moment of inertia at 0.6 MPa (6 bar, 87 psi)
unthrottled 10-4 kgm20.05 0.1 0.3 0.6
throttled 10-4 kgm26.5 13 50 100
Max. permissible swivel frequency
DRVS-...-90 [Hz] 3
DRVS-...-180 [Hz] 3
DRVS-...-270 [Hz] – – 2
Tab. 2: Technical data DRVS-6 … -16
