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ZSB-1/8-B
10
Accessories
Please select the corresponding accessories from our catalogue:
11
Troubleshooting
Malfunction
Possible cause
Outlet port 2 is depressurised
Supply pressure too high
if both push-button valves are
activated simultaneously
(< 0.5 s).
Different lengths of tubing for
the push-button valves
Outlet port 2 is pressurised if
Supply pressure too low
– both push-button valves
are not activated
Push-button or push-button
simultaneously (> 0.5 s)
valve faulty
– no push-button valve is
Installation fault (tubing bent)
activated
– one push-button valve is
Functional fault
activated
Pressure reduction at output 2
Pipe connection error
takes too long
Silencer dirty
Air leak at exhaust 3 when both
Functional fault
push-button valves are
activated simultaneously
(< 0.5 s).
Tab. 3
20
134
www.festo.com/catalogue
Remedy
– Reduce the supply pressure at
1
and 1
1
2
– Implementing suitable
measures for limiting the
pressure
Cut equal lengths of tubing for
the push-button valves
Increase the supply pressure at
1
and 1
to at least 4 bar
1
2
Replace push-button or
push-button valve
Install the components in
accordance with EN ISO 4414
Return the product to Festo
– Use short tubing
– Avoid angled screw
connectors
Clean or replace silencer
Return the product to Festo
Festo – ZSB-1/8-B – 1202NH English
ZSB-1/8-B
12
Technical data
12.1
Safety engineering
ZSB-1/8-B
Service life characteristic B10
1,000,000
d
Safety Integrity Level (SIL)
– Two-hand operation/SIL 1 according to IEC 61508
– Can be used in SIL 1 controllers according to IEC 62061
Performance Level (PL)
Two-hand operation/category 1, PL c according to
EN ISO 13849-1
Sample calculation:
Actuations per year: n
} PFH
} T
M
Reliable component
Yes
Lift
Two-hand operation in accordance with EN ISO 12100
Shock resistance
Shock test with severity level 2 according to EN 60068-2-27
Standard approval
Type III A according to EN 574
CE marking
According to EU Machinery Directive 2006/42/EC
(
declaration of conformity)
Product type testing
The functional safety of the product has been certified by an
independent testing body
EC-type examination certificate (www.festo.com)
Certificate-issuing authority
IFA 1201046
Tab. 4
12.2
General technical data
ZSB-1/8-B
Nominal size
4 mm
Actuation type
Pneumatic
Mounting position
Any
Design
Poppet valve with spring return
Operating pressure
4 ... 8 bar
Standard nominal flow rate 1
1
} 2
50 l/min
1,
2
Operating medium
Compressed air according to ISO 8573-1:2010 [7:4:4]
Ambient temperature
0 ... +60 °C
Type of mounting
Either:
– Via through-hole
– with female thread
Pneumatic connection
Gx
Material information, sealing rings
NBR
Material information, housing
Anodised wrought aluminium alloy
Product weight
420 g
Tab. 5
Festo – ZSB-1/8-B – 1202NH English
= 50,000 (assumption)
op
= 1.14 x 10
-6
d
= 20 years
21
135
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