Festo DRRD-08/10 - Manual (Page 4)

10 Fault clearance
Malfunction Possible cause Remedy
Uneven movement of the
payload Flow control valves inserted
incorrectly Check the flow control
function (supply or exhaust air
flow control)
Asymmetric angle setting Symmetric setting preferred
DRRD defective Return to Festo
Hard metal impact at the end
position
Flanged shaft does not remain
in the end position
(rebounding)
Residual energy too high Select a lower swivel speed
Move only against residual air
cushion on the exhaust side
Select a lighter load
Semi-rotary drive moves
against an unpressurized
chamber Pressurize semi-rotary drive
on both sides
Shock absorber unscrewed
too far Observe the maximum
permissible unscrewing length
Cushioning component
defective/worn Replace cushioning component
(
8 Disassembly and repair)
Fig. 18
11 Technical data
Size 8 10
Design Semi-rotary drive with twin pistons
Cushioning Elastic cushioning rings/plates at both ends
Pneumatic port M3
Operating medium Compressed air to ISO 8573-1:2010 [7:4:4]
Note on the operating medium Lubricated operation possible (in which case
lubricated operation will always be required)
Operating pressure [bar] 3 … 8
Mounting position any
Swivel angle [°] 180
Setting range on both sides [°] infinitely adjustable between –100 … +10
Cushioning angle ( Z minimum swivel
angle)
[°] 38 37
Repetition accuracy [°] ≤ 0.03
Ambient temperature [°C] –10 … +60
Theoretical torque at 6 bar [Nm] 0.2 0.4
Max. axial load (static)
Tension [kN] 0.26
Pressure [kN] 0.7 1.1
Max. permissible axial and radial
force on flanged shaft dependent on the distance of the force
application point (
www.festo.com/catalogue)
Max. permissible mass moment of
inertia [kgcm
2
] 15 20
End-position adjustment by turning the cushioning components
Note on materials Contains paint-wetting impairment substances
(PWIS)
Materials
Housing Anodised aluminum
Flanged shaft, plug, shock absorber
retaining plate, screws Steel
Seals TPE-U (PU), NBR
Product weight [kg] 0.16 0.25
Fig. 19