GESTRA NRS 1-41 Original Installation Instructions

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This presents the danger of electric shock. Cut off power supply before mounting or removing the terminal strips and housing lid. Usage for the intended purpose Use level switch NRS 1-41 only in conjunction with GESTRA level electrode NRG 16-41, NRG 17-41 or NRG 19-41 for signalling high water level (max. alarm). Safety note The equipment must only be installed and commi ...

NRS 1-41 1 Level switch NRS 1-41 (plug-in unit in plastic case with terminals) 1 Terminating resistor 120 Ω 1 Installation manual Description The switching controller type NRS 1-41 is a self-monitoring high-water level limiter with periodic self- checking and monitoring feature of the output relay contacts designed to be used in conjunction with one level electrode type NRG 16-41, 17-41 or 19-41. The switching controller has the followin ...

Associated components NRG 16-41 Level electrode NRG 16-41, PN 40 NRG 17-41 Level electrode NRG 17-41, PN 63 NRG 19-41 Level electrode NRG 19-41, PN 160 Design NRS 1-41 Enclosure of insulating material with terminals for installation in control cabinets. The terminals are externally accessible. Snapping onto a 35 mm standardised supporting rail (DIN EN 50022). External dimensions: 73 x 100 x 118 ...

TÜV · SWB/SHWS · 12-403 Type examination certificate Input/Output Interface for CAN bus to ISO 11898 CANopen protocol Output voltage supply for electrode 18 – 36, short-circuit protected Output for control circuit Two volt-free relay contacts, locally connected in series. Max. contact rating for switchting voltages 24 V AC/DC, 115 V AC and 230 V AC: 4 A resistive/inductive. Contact material: hard-gold plat ...

­corrosion. Technical Data – continued – Name plate / Marking Fig. 1 NRS 141 – continued – Protection Enclosure: IP 40 to DIN EN 60529 Terminal strip: IP 20 to DIN EN 60529 Admissible ambient temperature 0°C to 55°C Enclosure material Front panel: polycarbonate, grey Enclosure: polycarbonate, black Weight Approx. 0.8 kg 1 ...

Key 1 Status LED Alarm Malfunction LED 1 Electrode High-level alarm Malfunction alarm LED 2 no function Malfunction alarm LED 3 no function Malfunction alarm LED 4 no function Malfunction alarm 2 LED “Bus status” 3 LED “Power” 4 Enter/Test mode 5 Decrease 6 Increase 7 Program key 8 Two-pole code switch (no function) 9 Ten-pole code switch 0 Terminal strip ! Screws for terminal strip " H ...

Installation NRS 141 Installation on mounting rail 1. Clip switching controller onto mounting rail 35 x 15 mm (DIN EN 50022). 2. Align switching controller, Fig. 7 Note n If an external measuring pot is used, each level electrode type NRG 1…-41 requires one switching controller type NRS 1-41 and one GESTRA monitoring unit SRL 6-40. 0 Terminal strip ! Screws for terminal strip " Housing § Mounting rail TS 35 x 15 ...

To wire the equipment, screened multi-core twisted-pair control cable must be used for the bus line, e. g. ­UNITRONIC® BUS CAN 2 x 2 x ... mm2 or RE-2YCYV-fl 2 x 2 x ... mm2. Control cable assemblies (2 x 2 x 0.32 mm² cable with plug and connector) of various lengths are ­available as add-on equipment. NRG, LRG, EF, URZ, TRV, URB 2 The equipment is fitted with sensor plug-in connectors (5 ...

CAN bus voltage supply To ensure the troublefree operation of the CAN bus system make sure that the voltage supply for all bus devices is sufficient. Please use the following table to check the voltage supply of your bus system. Control units with voltage supply Qty. x Power output per item = Sum x 6 W = W Please enter data. Sum 1 = W Sensor, transmitter, control units, operating & display unit URB 1 Qty. x Power ...

n Do not connect terminals 10, 11 and 12! Wiring diagram Fig. 8 $ % & / ( ) ) Electrical Connection – continued – ...

Fig. 9 b = c c d = a a d b ( ( Electrical Connection – continued – Fig. 10 RES 1 Fig. 11 RES 2 $ Mains voltage % Safety circuit, uninterrupted, ≥ 18 V AC/DC & Other devices in the safety circuit / Photo-Mos output 24 V-230 V AC/DC, 100 mA. With HW-alarm: instantaneous. With malfunction alarm: switched ( Terminating resistor 120 Ω, RES 1 or RES 2 ) CAN bus line, twisted pair control cable = Pi ...

CAN bus wiring diagram Fig. 12 RES 2 CEP NRS, NRR, LRR, TRS, URB 1 URB 2 NRG, LRG, TRV EF, URZ NRG, LRG, TRV EF, URZ RES 1 Attention n Wire equipment in series. Star-type wiring is not permitted! n Link screens of control cables such that electrical continuity is ensured and connect them once to the central earthing point (CEP). If equipotential bonding currents are to be expected, for instance in outdoor insta ...