Norgren XSZ Series - Manual (Page 3)

Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. © 2014 Norgren GmbH
10/14
2002-5313h
N/en 5.14.100.03
XSz 8 ... XSz 50
Spare Parts
Series Model (G-thread) Model (NPT-thread) Spare parts kits Spare valve without base
XSz 8 24928063053 24928053053 0101534 2493805
XSz 10 24929323053 24929333053 0110641 2493930
XSz 20 24930320201 — 0110649 2494030
XSz 20 — 24930330201 0110649 2494030
XSz 32 24931050801 24931070801 0558631 2494130
XSz 32 24931060801 24931180801 0558631 2494131
XSz 50 24932300801 24932200801 0542576 —
XSz 50 24932310801 24932180801 0542576 —
Solenoids de-energized:
A port is exhausted. P port is
closed, no connection from P
to A. No residual pressure on
port A as port A is freely
exhausted through port R.
No acting pressure on port A. Solenoids energized:
Pilots are synchronously
energised. Connection from
port P to A. Working pressure
on A. No passage from P to R.
Dynamic self monitoring of
both pilot systems, checking
each other at each cycle for
proper functioning. Malfunction:
Pilots non-synchronously
energised. Dynamic monitor
notices failure operation and
prevents the pistons from
giving connection from P to A.
Synchronously port A exhausts
through R. No residual pressure
remains in the system since P and A
are not connected. The pilot line has
lost the pressure and is locked.
3 (R)
2 (A)
3 (R)
1 (P) 1 (P) 1 (P)
2 (A)
3 (R)
2 (A)
1 (P) = Air pressure port / 2 (A) = Power port (clutch / brake) / 3 (R) = Exhaust
Norgren Herion XSz Safety valves comply with the Category IV of DIN EN ISO 13849-1, if the operating system has been designed and realised according to Category IV.