Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
Fig. 5: Schematic diagram: Function and test channels
INFO: If you pressurize/exhaust more than 8 valves at the same time, make sure
that additional supply air/exhaust is available via the supply plates.
Personal rescue by exhausting (for circuits with position retention)
For vertical and horizontal movements:
• Severity of injury = S2 (usually irreversible injury, including death)
• Hazardous point is within the accessible area
• the operator cannot free himself
• exhausting must not cause any additional hazard
Personal rescue can be achieved only by the following circumstances:
• Only in a state without pressure
• After active emergency stop by 2V1 (a 2V1 can supply several 2V2), this must
be mounted close to the hazardous point
• Provide a joint personal rescue for cylinder groups (a 2V2 can exhaust several
cylinders)
Block diagram
The following figure shows the safety-related block diagram for example 1.
AVENTICS™ AV | R412018148-BAL-001-AB | English
2
1 3
2
12
3 1
X
3
1
5
R
4
2
14
5 1 3
After EMERGENCY STOP
1
2
1
3
3
1
1
1
2
2
2
4
2
4
10
10
4
2
4
4
2
4
14
5 1 3
12
14
5 1 3
2
I
1
Fig. 6: Safety-related block diagram, example 1
1 Safety door switch (e.g. PILZ PSEN
cs3.1 or PSEN sl-0.5p 1.1)
3 PLC (programmable logic controller)
5 pneumatic part of the AV valve sys-
tem
7 Diagnosis "Query of the position of
the main air valve"
9 Diagnosis "indirect query of the work-
ing valve"
1
1
1
2
2
2
2
4
2
10
2
4
2
2
4
2
12
14
5 1 3
12
L
2
7
3
8
9
2 Safety module (e.g. PILZ PNOZ)
4 electrical part of the AV valve system
UA supply via electrical supply plate
6 Main air valve with position detection
(e.g. IS12-PD)
8 Diagnostic message "Valve voltage
UA is lower than switch-off voltage
(UA < UAoff)"
X
3
1
5
R
O
4
5
6
17
Publicité
Table des Matières
