Boiler house Level controls
2
Technical data LCR2652
Supply voltage
24 Vdc +/– 20%
Fuse
external 0.5 A (semi-delay)
Power consumption
5 W
Connection of level transmitter Supply voltage of level transmitter
1 analogue input 4-20 mA, e. g. for level transmitter LP20/LP21/PA420, with 2 poles and screen
12 Vdc
1 analogue input 4-20 mA (steam flowrate) 1 analogue input 4-20 mA (feedwater flowrate) 1 volt-free digital input (level limit alarm switch), 24 Vdc +/– 20%, 10mA
Inputs
1 or 2 volt-free change-over contacts, 8 A 250 Vac/30 Vdc cos f = 1 (pump/VMD control) 2 volt-free change-over contacts, 8 A 250 Vac/30 Vdc cos f = 1 De-energizing delay: 3 seconds (MIN/MAX alarm) 1 analogue output 4-20 mA, max. load 500 ohm (manipulated variable Y) 1 analogue output 4-20 mA, max. load 500 ohm (actual value indication) Provide inductive loads with RC combinations according to manufacturer's specification to ensure interference suppression
2.3 42
Outputs
Data line
1 interface for data exchange with operating and display unit BHD50
1 tri-colour LED indicator (start-up = amber, power ON = green, malfunction = red) 1 code switch with four poles for configuration Housing material: base: polycarbonate, black; front: polycarbonate, grey Conductor size: 1 x 4,0 mm² solid per wire or 1 x 2.5 mm² per stranded wire with sleeve to DIN 46228 or 2 x 1.5 mm² per stranded wire with sleeve to DIN 46228 (min. Ø 0.1 mm) terminal strips can be detached separately Fixing of housing: Mounting clip on supporting rail TH 35, EN 60715
Indicators and adjustors
Housing
Electrical safety
Pollution degree 2 for installation in control cabinet with protection IP 54, completely insulated
Housing: IP 40 to EN 60529 Terminal strip: IP 20 to EN 60529
Protection
Weight
approx. 0.5 kg
Ambient temperature
when system is switched on: 0° ... 55 °C, during operation: –10 ... 55 °C
Transport temperature
–20 ... +80 °C (<100 hours), defrosting time of the de-energized equipment before it can be put into operation: 24 hours
Storage temperature
–20 ... +70 °C, defrosting time of the de-energized equipment before it can be put into operation: 24 hours
Relative humidity
max. 95%, no moisture condensation
TI-P693-24 EMM Issue 1
Page 2 of 6
LCR2652 BHD50 Level Controller Operating and Display Unit
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