Changes To The Load Controller; Load Controller, Software From V01.40 To V01.50 - Siemens LMV50 Series Manual

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Building Technologies
22.2.2

Changes to the load controller

22.2.2.1 Load controller, Software from V01.40 to V01.50

The software of the load controller has been changed from V01.40 to V01.50.
The following changes have been made:
∂
Auxiliary sensor for cold start thermal shock protection
∂
Straightforward changeover of operation to internal load controller
Using a potential-free contact at terminals X62 pin 1 and X62 pin 2, it is possible to
switch from external load controllers to the internal load controller of the LMV51.100.
The following operating modes can be switched over:
↑ 2
Operating mode 4
↑ 2
Operating mode 5
↑ 2
Operating mode 3
↑ 2
Operating mode 6
↑ 2
Operating mode 1
With software version V01.50 or higher, Pt100 sensors in operating mode 6 are
permitted
New load controller function for analog input for predefined load and load output
Manipulated variable input, modulating:
<3 mA Line interruption
4 mA or 2 V
20 mA or 10 V
Burner shutdown at <5 mA not used.
Load output, modulating:
<3 mA Line interruption
4 mA 0% load
xx mA Low-fire (min. load)
xx mA Nominal load (max. load)
20 mA 100% load
Shutting the burner down = no impact on signal.
Manipulated variable input, multistage burner:
Stage 1: 5 mA or 2.5 V
Stage 2: 10 mA or 5 V
Stage 3: 15 mA or 7.5 V
Switching thresholds at:
7.5 mA and 12 mA with 0.5 mA hysteresis
3.75 V and 6.25 V with 0.25 V
Basic Documentation LMV5...
22 Revision history
↑ intLC
= Int LC X62
↑ intLC
= Ext LC X62
↑ intLC
= Int LC Bus
↑ intLC
= Ext LC Bus
↑ intLC
= ExtLC X5-03
Low-fire (min. load)
Nominal load (max. load)
hysteresis
CC1P7550en
22.05.2018