6
NRS 1-52 - Installation Instructions -
819176-02
NRS 1-52
Supply voltage
24 VDC +/– 20 %
Fuse
external 0.5 A (semi-delay)
Power consumption
2 VA
Connection of level electrode
2 inputs for level electrode NRG 10-52, NRG 16-52, NRG 16-36, NRG 16-4 and ER 5.-1,
4 poles with screen
Electrode voltage
5 V
SS
Response sensitivity
(Electrical conductivity of water at 25 °C)
> 0.5 ... < 1000 μS/cm or > 10 ... < 10 000 μS/cm (switch-selectable)
Outputs
2 volt-free change-over contacts, 8 A 250 V AC / 30 V DC cos
ϕ
= 1.
De-energizing delay: 3 sec.
Provide inductive loads with RC combinations according to manufacturer’s specification to ensure
interference suppression.
Indicators and adjustors
1 pushbutton “Test” for simulating MIN / MAX alarm,
2 red/green LEDs for indicating operating mode and MIN / MAX alarm,
1 green LED indicating “Power ON”,
1 code switch with 4 poles for changing the sensivity
Housing
Housing material: base: polycarbonate, black; front: polycarbonate, grey
Conductor size: 1 x 4.0 mm² solid per wire or
1 x 2.5 mm
2
per stranded wire with sleeve to DIN 46228 or
2 x 1.4 mm
2
per stranded wire with sleeve to DIN 46228;
Terminal strips can be detached
Fixing of housing: Mounting clip on supporting rail TH 35, EN 60715
Electrical safety
Pollution degree 2 for installation in control cabinet with protection IP 54, completely insulated
Protection
Housing: IP 40 to EN 60529
Terminal strip: IP 20 to EN 60529
Weight
approx. 0.2 kg
Technical Data
