Lamtec VC100 Modular Boiler Control System

Modular Boiler Control SystemLAMTEC | VC10Relative operating mode:Two setting values - delta and hysteresis - are available.For the switch-off point, the delta is added to the active setpoint of the firing rate controller and for the switchon point, the hysteresis is subtracted from the switch-offpoint.Example (setpoint 80 °C, delta 10 K, hysteresis 20 K): This results in a switch-off point of 90 °C and aswitch-on point of 70 °C.Power control for a burner with one component The output control includes a digital controller forcontrolling the boiler pressure/boiler temperature.The setpoint can be set to ‘Fixed’ or specified by a time programme/analogue input. A manual setting and aload limit are available. It is also possible to activate different start-up ramps.Time programme:This function can be used to replace the setpoint of the firing rate controller with a default value at a specifictime window. To do this, these time windows and default values must be set and activated. Outside of activetime windows, the setpoint firing rate is active.Boiler level control with two feed water pumps with automated pump change and binary water leveldetection.A feed water pump is switched on when the water level falls to ‘Water level below’. If the „water level at top“is exceeded, the feed water pump is blocked and only switched on again when the „water level at bottom“ isreached. If the water level in the feed water tank is too low, the feed water pump is forcibly stopped.An automatic pump change depending on the operating hours and an adjustable running time ratio is guaranteed. The pump is only changed via the pump status„OFF“. When using fault and operating message, the system automatically switches to the redundant pumpin the event of a pump fault. The function is only active with plant „On“.Blowdown control The blowdown control system realises an automatic blowdown of the boiler. This removes impurities fromthe boiler tank at regular intervals.For this purpose, the blowdown valve is activated in an adjustable pulse-pause ratio. The function is only activewith plant „On“.Overall efficiency (ETA) The overall efficiency is calculated from the active lossesand the performance data. The data/constants must be set correctly for the individual loss calculations.The desalting and blowdown losses can only be activated for the steam boiler system type. Theefficiency calculation is only available with active flue gas temperature measurement.Steam boiler analogue The following functions are included:Steam boiler binary The following functions are included: Boiler level control with a feed water pump and binary water level detectionBoiler level control with two feed water pumps with automated pump change and binary water leveldetection Blowdown controlNiveausteuerung Kessel mit einer Speisewasserpumpe und binärer WasserstandserfassungThe feed water pump is switched on when the water level falls to ‘Water level below’. If the „Water level at top“is exceeded, the feed water pump is blocked and only switched on again when the „Water level at bottom“ isreached. If the water level in the feed water tank is too low, the feed water pump is forcibly stopped. The function is only active with plant „On“.4  Boiler level control with one feed water pump and analogue water level detectionBoiler level control with two feed water pumps with automated pump change and analogue water leveldetection Level control via TPS control valve and a feed water pump Level control via TPS control valve and two feedwater pumps with automated pump changeover Conductance control via TPS control valveBlowdown control with overfill protectionBoiler level control with a feed water pump and analogue water level detectionThe „Water level down“ and „Water level up“ switching points can be freely preselected between 0 and 100%.The feed water pump is switched on when the water level falls to „Water level below“. If the „Water level above“is exceeded, the feed water pump is blocked and only switched on when the „Water level above“ is reached.If the water level in the feed water tank is too low, the feed water pump is forcibly stopped. The function is onlyactive with plant „On“.