IM-P693-02
EMM Issue 2
21
LCR2251 Level Controller
7. Technical information
Supply voltage
24 Vdc +/– 20%
Fuse
External 0.5 A (semi-delay)
Power consumption
4 W
Connection of level transmitter
1 analogue input 4-20 mA, e.g. for LP20/LP21/PA420 level transmitter, 2 poles and
screen.
Supply voltage to level transmitter
12 Vdc/max. 20 mA
Outputs:
2 floating changeover contacts, 8 A 250 Vac/30 Vdc cos
f
= 1. De-energizing delay
3 seconds (MIN/MAX alarm)
1 floating open/close contact, 8 A 250 Vac/30 Vdc cos
f
= 1 (pump on/off control).
1 analogue output 4-20 mA, max. load 500 ohms (manipulated variable Y or actual
value).
Inductive loads must have interference suppression (RC combination) as per the
manufacturer's specification.
Displays and controls
3 push buttons for MIN/MAX alarm test and parameter setting,
1 4-digit 7-segment LED display, green,
2 red LEDs for MIN/MAX alarm,
1 amber LED for pump active or manipulated variable Y,
1 4-pole code switch for configuration.
Housing
Housing material, base: black polycarbonate; front: grey polycarbonate
Conductor size: 1 x 4.0 mm
2
solid, per wire, or
1 x 2.5 mm
2
per lead with sleeve to DIN 46228, or
2 x 1.5 mm
2
per lead with sleeve to DIN 46228 (min.
0.1 mm)
Terminal strips can be removed separately
Housing attachment: Mounting clip on support rail TH 35, EN 60715
Electrical safety
Degree of contamination 2 for installation in control cabinet with degree of protection
IP 54, fully insulated
Degree of protection
Housing: IP 40 to EN 60529 Terminal strip: IP 20 to EN 60529
Weight
approx. 0.2 kg
Ambient temperature
At moment of switch-on 0 ° ... 55 °C
In operation –10 ... 55 °C
Transport temperature
–20 ... +80 °C (<100 hours), only switch on after a defrosting period of 24 hours.
Storage temperature
–20 ... +70 °C, only switch on after a defrosting period of 24 hours.
Relative humidity
max. 95%, no moisture condensation
Approvals:
TÜV Certificate
VdTÜV Bulletin "Wasserstand 100" (Water Level 100):
Requirements for water level control and limiting equipment.
Type approval no.: TÜV · WR · XX-XXX (see name plate)
Contents of package
1 x Level controller LCR2251
1 x Installation and Maintenance Instructions
