Siemens VALVEGYR LDU11.523A27 - Mechanical Design and Components; System Housing and Features

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Building Technologies Division CC1N7696en
20.04.2016
Mechanical design
- Plug-in design
- Exchangeable unit fuse (including spare fuse)
- Made of impact-proof and heat-resistant black plastic
- Lockout reset button with viewing window showing:
– The fault signal lamp
– The lockout indication
- Coupled to the program spindle
- With transparent lockout reset button
- Easy-to-remember symbols indicating the type of fault and the time lockout
occurred
- Synchronous motor of the sequence switch with gear train and step action
sequence switch
- Camshaft with 15 nonadjustable cams
- Program indicator at the head of the camshaft
- 1 main and 1 auxiliary relay
- Lockout relay can be electrically reset from a remote location and provides the
«Lockout» and «Reset» functions
- Unit fuse and spare fuse
All electrical components are interconnected via printed circuits.
Type summary
Type reference Mains voltage t3 t4
LDU11.323A17 AC 100...110 V 2.5 s 2.5 s
LDU11.323A27 AC 220...240 V 2.5 s 2.5 s
LDU11.523A17 ¹) AC 100...110 V 5 s 5 s
LDU11.523A27 ¹) AC 220...240 V 5 s 5 s
t3 Filling the test space
t4 Evacuating the test space
¹)
Valve opening times do not conform to EN1643
Ordering
Valve proving system LDU11... (without plug-in base) refer to «Type summary»
Plug-in base not included in the delivery, must be ordered as a separate item!
Connection accessories for medium-capacity refer to Data Sheet N7230
- Plug-in base AGM11 with Pg11 threads for cable entry glands
- Plug-in base AGM11.1 with M16 threads for cable entry glands
PTC resistor (AC 230 V) AGK25
- For load on terminal 4 of LMG2...
Valve proving system
LDU11...
Housing
Legend