Festo VEAB Series, Operating Instructions

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12 Fault clearance
Malfunction Possible cause Remedy
Valve does not react Operating voltage not applied
(
è
Fig. 7)
Check the operating voltage
connection.
No setpoint voltage (
è
Fig. 7) Check the controller and
connection.
Valve faulty Send the valve to the Festo repair
service.
Flow rate too low Restriction of the flow cross
section due to connection
technology (swivel fittings). Use alternative connection
technology.
Pressure constant
despite modified
setpoint specification Supply cable breakage; the last
outlet pressure set is maintained
but not regulated. Slow pressure
drop due to leakage. Replace supply cable.
Setpoint value not
reached Inlet pressure p1 not present Increase the inlet pressure p1.
Observe the permissible
maximum operating pressure
(
è
Chapter 13).
Fig. 8
13 Technical data
Characteristic Specification/value
Design Propor tional pressure regulator
Assembly position Any
Operating medium Compressed air in accordance with
ISO 8573-1:2010 [7:4:4],
inert gases
Note on the operating medium Lubricated operation not possible
Inlet pressure 1 (vacuum, at port 3)
VEAB-...-D14-... [bar] –1
Inlet pressure 1 (at port 1)
VEAB-...-D12-... [bar] 0 … 1
VEAB-...-D7-... [bar] 0 … 3
VEAB-...-D2-... [bar] 0 … 4
VEAB-...-D9-... [bar] 0 … 6.5
Pressure control range
VEAB-...-D14-... [bar] –0.005 … –1
VEAB-...-D12-... [bar] 0.001 … 0.2
VEAB-...-D7-... [bar] 0.005 … 1
VEAB-...-D2-... [bar] 0.01 … 2
VEAB-...-D9-... [bar] 0.03 … 6
Accuracies
Repeat accuracy [%] ±0.4 FS (full scale)
Hysteresis [%] Max. 0.25 FS (full scale)
Hyteresis 0.2 bar variant (D12) [%] Max. 0.5 FS (full scale)
Linearity error [%] Max. 0.5 FS (full scale)
Linearity error 0.2 bar variant (D12) [%] Max. 0.8 FS (full scale)
Analogue output [%] 2 FS (full scale)
Degree of protection IP65 (completely mounted)
Permissible temperature range
Environment [°C] 0 … +50
Medium [°C] +5 … +50 (non-condensing)
Storage [°C] –20 … +70
Electromagnetic compatibility (EMC)
1)
– Interference emission
– Interference immunity
See declaration of conformity
è
www.festo.com
1) The product is intended for use in industrial environments. Outside of industrial environments, e.g. in
commercial and mixed-residential areas, actions to suppress interference may have to be taken.
Feature Specification/value
Nominal operating voltage [V DC] 24
Operating voltage range [V DC] 19 … 29
Permissible residual ripple of operating
voltage [%] 10
Maximum current consumption [A] 0.4
Setpoint value
Analogue input (current variant) [mA] 4 … 20
Analogue input (voltage variant) [V] 0 … 10
Input resistance setpoint value
At 4 … 20mA [Ω] 250
At 0 … 10VDC [kΩ] 10
Actual value
Analogue output (current variant) [mA] 4 … 20
Analogue output (voltage variant) [V] 0 … 10
Vibration and shock resistance (in accordance with IEC 60068)
Vibration (part 2 – 6)
Mounting with through-holes Severity level 2 (SG2)
1)
Mounting to H-rail, mounting plate, terminal strip Severity level 1 (SG1)
1)
Shock (part 2 – 27)
Mounting with through-holes Severity level 2 (SG2)
1)
Mounting to H-rail, mounting plate, terminal strip Severity level 1 (SG1)
1)
Continuous shock (part 2 – 27)
Mounting with through-holes Severity level 1 (SG1)
1)
Mounting to H-rail, mounting plate, terminal strip Severity level 1 (SG1)
1)
Materials
Housing PA, reinforced
Screws Steel, hardened and tempered;
steel,galv anized
Seals Nitrile rubber
Weight
Sub-base valve [g] Approx. 55
In-line valve [g] Approx. 55
1) Explanation of the severity level
è
Fig. 10 … Fig. 12
Fig. 9
Vibration load
Frequency range [Hz]
Acceleration [m/s
2
] Deflection [mm]
Severity
level 1 SL2 SL1 SL2 SL1 SL2
2 … 8 2 … 8 – – ±3.5 ±3.5
8 … 27 8 … 27 10 10 – –
27 … 58 27 … 60 – – ±0.15 ±0.35
58 … 160 60 … 160 20 50 – –
160 … 200 160 … 200 10 10 – –
Fig. 10
Shock load
Acceleration [m/s
2
] Duration [ms] Shocks per direction
SL1 SL2 SL1 SL2 SL1 SL2
±150 ±300 11 11 5 5
Fig. 11
Continuous shock load
Acceleration [m/s
2
] Duration [ms] Shocks per direction
±150 6 1000
Fig. 12