Technical data, LRR 1-5x
Supply voltage
24 VDC, + / – 20 %
Fuse
external semi-delay M0.5A
Power consumption
5W
Reset hysteresis
MAX limit: – 3 % of set MAX limit, factory default MIN limit: +3% of set MIN limit, (factory default)
Input/output
Interface for data exchange with the URB 55 visual display and operating unit
Inputs
1 volt-free input, 24 V DC, for external command Control OFF, Valve CLOSED, Intermittent blowdown OFF (standby). 1 analogue input for potentiometer 0 – 1000 Ω, 2-wire connection (indication of valve position)
Outputs
2 volt-free changeover contacts,
8 A 250 V AC / 30 V DC cos φ = 1 (continuous blowdown valve).
2 volt-free changeover contacts,
8 A 250 V AC / 30 V DC cos φ = 1, or
1 volt-free changeover contact,
8 A 250 V AC / 30 V DC cos φ = 1, 1 volt-free changeover contact,
8 A 250 V AC / 30 V DC cos φ = 1 (intermittent blowdown valve)
Inductive loads must have interference suppression
(RC combination) as per the manufacturer’s speci cation.
1 analogue output 4-20 mA, max. load 500 ohms (actual value)
Indicators and controls
1 multicolour LED (start-up = amber, power ON = green, communication failure = red)
1 4-pole code switch for con guration.
Housing
Housing material, base: black polycarbonate; front: grey 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. ∅ 0.1 mm)
Terminal strips can be removed separately
Housing attachment: Mounting clip on support rail TH 35, EN 60715
Electrical safety
Pollution degree 2 for installation in control cabinet with protection rating IP 54, fully insulated
IP rating
Housing: IP 40 to EN 60529 Terminal strip: IP 20 to EN 60529
Weight
Approx. 0.5 kg
Ambient temperature
when system is switched 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%, non-condensing
