4
Technical
Description
31
4.8
Digital
inputs
Eight digital inputs can be configured for the LT 2/KS1-DK lambda transmitter.
Depending on the supplied voltage, the digital inputs take on the setting High
(supplied voltage 24 V) or Low (input open or supplied voltage 0 V).
Parameter groups 1170...1245
Depending on this setting, the LT 2/KS1-DK lambda transmitter can execute certain
functions. All eight digital inputs are identical in terms of structure and functionality.
The digital inputs are configured by means of the parameters listed below.
Factory-set assignment of digital inputs
• Input
1
→
Reset fault/warning
• Input
2
→
Reset limit value signal (also see 5.4)
• Input
3
→
Offset calibration
• Input
4
→
PID controller Off
• Input
5
→
Maintenance On/Off (ab1v33a)
• Input
6
→
(1)
Fuel 2 (gas)
• Input
7
→
(1)
Fuel 3
• Input
8
→
(1)
Fuel 4
(1)
Parameter 836 – Service level – must be set to “Digital inputs”.
Without preset signal
→
Fuel oil EL