Lamtec LT 2 Assembly And Commissioning Manual page 34

4 Technical Description
4.8.1 Parameters of digital inputs
Idle state
Parameters:
1170/1180/1190/1200/
1210/1220/1230/1240
Functions A,B,C,D
Parameters:
1171....1244
State
Parameters:
1175/1185/1195/1205/
1215/1225/1235/1245
Here you can set the idle state of the digital input. If the state differs from the one set
here, the actions predefined for the functions (A, B, C, D) are executed. If Diagnostic
mode is set here, the functions (A, B, C, D) can be initiated for the corresponding
digital input by means of the State parameter.
• LOW (normal open contacts)
• HIGH (idle)
• Diagnostic mode
The four functions are very similar in structure, but the assignment of the limit values
LV 1 - 4 or fuels to the individual functions
(A, B, C, D) is limited. Reset limit value 1 and Fuel 1 are only possible with function A;
Reset limit value 2 and Test gas 2 only with function B, etc.
The following actions are possible:
• None
• Offset calibration
• Fault reset
• Warning reset
• Reset LV 1
• Fuel 1
• Probe 1
• No cal.
• PID controller On/Off
• Maintenance
• Deactivate
This parameter indicates the state of the digital input. The three possible states are
inactive (idle state) and active; the set functions (A, B, C, D) are initiated. The state of
the digital input can be set manually with this parameter, provided that the idle level
parameter is set to Diagnostic mode.
Initiates offset calibration.
Acknowledges present faults.
Acknowledges present warnings.
(Function A) resets limit value 1, functions B, C and D
reset
the limit values 2, 3 and 4 respectively.
Therefore, the corresponding LVs must be set to
Acknowledge" in Reset mode
(Function A only) selects fuel 1, functions B, C and D
select fuels 2, 3 and 4 respectively.
(Function A) selects probe 1, functions B, C and D
select probes 2, 3 and 4
Calibration disabled
If the PID controller option is enabled, here you can
switch off the PID controller.
Switches the device to "Maintenance"
Limit value x (also see section 4.13)
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