Siemens LME7 Series Basic Documentation

22/245
Building Technologies Division Basic Documentation LME7... CC1P7105en
Infrastructure & Cities Sector 2 System makeup/function description 29.11.2011
The LME7... system components (display and operating unit AZL2...) are connected
directly via BCI to the LME7... basic unit. All safety-related digital inputs and outputs of
the system are monitored by a contact feedback network. For intermittent operation in
connection with the LME7..., the ionization probe and, optionally, the flame detector
QRA2..., QRA4.U or QRA10... can be used. The burner control is operated and
parameterized via the AZL2... display and operating unit or via PC tool. The AZL2...
display and operating unit features an LCD and menu-driven operation, offering
straightforward operation and targeted diagnostics. When making diagnostics, the
display shows the operating states, the type of error and meter readings. Passwords
protect the different parameter levels of the burner/boiler manufacturer and heating
engineer against unauthorized access. Basic settings that the plant operator can make
on site require no password.
 Multicolor indication for operating state and fault status messages via 3-color LED
 Diagnostics of cause of fault via blink code
 Extensive service, fault and operating state information via built-in 3 x 7 segment
display
 Extensive service, fault and operating state information via BCI and AZL2...
2.1 Features
- Undervoltage detection
- Electrical remote reset facility
- Accurate control times thanks to digital signal handling
- Multicolor indication of fault status and operating state messages
- Air pressure supervision with function check of air pressure switch during start and
operation (gas)
- Repetition limitation
- Controlled intermittent operation after 24 hours of continuous operation (can be
parameterized via parameter P239) depending on program module PME...
- BCI
- Indication of program sequence
- Connection for program module PME...
- Unit parameter adjustable either via display or PC software ACS410
Indication and
diagnostics

Siemens LME7 Series Specifications

General

Brand	Siemens
Model	LME7 Series
Category	Controller
Language	English