Features - Siemens LME7 Series Manual

Indication and
diagnostics
Building Technologies
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 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
Repetition limitation
-
Controlled intermittent operation after a maximum of 24 hours of continuous
-
operation (can be parameterized via parameter 239) depending on the program
module PME
BCI
-
Unit parameter adjustable either via display or PC software ACS410
-
Connection for program module PME
-
Only LME71.../LME73...:
Indication of program sequence
-
Integrated in the basic unit LME7... are:
∂
Burner control
∂
BCI for connection a display or PC
∂
Lockout reset button (info button)
∂
3 multi color signal lamp LED for operations and fault notifications
∂
Optional: Analog inputs for load controller DC 0...10 V, DC 0/4...20 mA, 0...135 Ω
∂
Interface for program module
Only LME71.../LME73...:
∂
Optional: 3 x 7 segment display for fault and state information's and parameter
display
∂
Control for one actuator
Basic Documentation LME7...
2 System makeup / function description
17/106
CC1P7105enr
17.04.2018