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Gestra NRR2-51 Level Controller
Technical Datasheets / Product Documentations
| Brand |  |
| Category | Controller |
| Product Name | Gestra NRR2-51 Level Controller |
| Product Code | NRR2-51 |
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Product Description
Gestra products, including Gestra NRR2-51 Level Controller, are sourced through parallel import channels and delivered to our customers worldwide with speed and reliability. As an authorized trading partner, Imtek Engineering offers genuine Gestra parts at competitive prices. Even if Gestra NRR2-51 Level Controller is not listed on our website, you are welcome to request a price quote — our team will respond promptly with a tailored offer.
NRR 2-50, NRR 2-51 Supply voltage 24 VDC +/– 20% Fuse external 0.5A (semi-delay)
Power consumption 4W Connecting a level electrode/level transmitter (switch-selectable)
1 input for NRG 21-.. and NRG 26-21 level electrode, 3-pole with shield, or
1 analogue input 4-20 mA, e.g. for the NRGT 26-. level transmitter, 2-pole with shield.
Supply voltage to level electrode 12 VDC Outputs:
NRR 2-50: 2 volt-free relay contacts, 8 A 250 V AC / 30 V DC cos ϕ = 1 (control valve open/closed).
1 volt-free relay contact, 8 A 250 V AC / 30 V DC cos ϕ = 1.
Off delay 3 seconds (MIN/MAX alarm, switch-selectable)
NRR 2-51: 2 volt-free relay contacts, 8 A 250 V AC / 30 V DC cos ϕ = 1.
Off delay 3 seconds (MIN/MAX alarm) 1 analogue output 4-20 mA, max. output load 500 ohms (manipulated variable Y).
Inductive loads must have interference suppression (RC combination) as per the manufacturer's
specifications.
NRR 2-50: 1 analogue output 4-20 mA, max. output load 500 ohms, e.g. for actual value indication.
Displays and controls 1 rotary knob with integrated pushbutton for testing the MIN/MAX alarm and setting the parameters,
1 four-digit seven-segment LED display, green 2 red LEDs for MIN/MAX alarm,
2 amber LEDs for control valve opening/closing (NRR 2-50 only) 1 four-pole code switch for configuration.
Housing Housing material: base of black polycarbonate; front of grey polycarbonate
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 With panel adapter: IP 65 to EN 60529
Weight approx. 0.2 kg Ambient temperature 6
NRR 2-50, NRR 2-51 - Installation & Operating Manual - 819180-06
Frequently Asked Questions
Frequently asked questions about Gestra NRR2-51 Level Controller by Gestra. Imtek Engineering is ready to assist you in sourcing Gestra NRR2-51 Level Controller from Gestra in United States.
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