GESTRA NRS 2-4 Installation Instructions Manual

Page Commissioning Procedure Checking electrical connection..............................................................................................................12 Applying mains voltage..........................................................................................................................12 Danger.... ...

GESTRA NRS 2-4 1 V to 10 V DC (measuring voltage coming from level electrode) Output measuring circuit 12 V DC (supply voltage for level electrode) Output 2 volt-free relay contacts. Max. contact rating with switching voltages of 24 V, 115 V and 230 V AC: resistive 4 A, inductive 0.75 A at cos j 0.5. Max. contact rating with switching volt ...

GESTRA NRS 2-4 In conjunction with the electrode NRG 211 it can detect high water level. In addition, the level switch detects possible malfunction signals coming from the electrode and ­monitors the electrode supply cable. Design NRS 2-4c: 19 slide-in unit wi ...

Commissioning Procedure Make sure that the NRS 2-4 and the associated level electrode NRG 211 are wired in accordance with the wiring diagram. Fig. 3 Checking electrical connection Applying mains voltage NRS 2-4 c/d 1. When switching on the mains voltage the green LED B must be permanently illum ...

GESTRA NRS 2-4 TRD regulations (1.0 A for 72 h operation). n The screen must not make any other electrical contact Attention Electrical Connection – continued – 1 Level electrode NRG 211 2 Test loop for equipment 3 Switching output for “Alarm” (optocoupler) 4 Switching out ...

GESTRA NRS 2-4 Operational Malfunctions Danger The screw-type connector of the NRS 2-4 c/d is live during operation. This presents the danger of electric shock! Cut off power supply before inserting or removing the 19" slide-in unit and before carrying out any installation or maintenance work. If faults occur that are not listed ab ...

GESTRA NRS 2-4 B LED “Power” C LED “Malfunction in connecting line” C LED “Malfunction in level electrode” E LED “High level alarm” F Fixing screws Key ...

GESTRA NRS 2-4 GESTRA AG Münchener Straße 77 28215 Bremen Germany Telefon +49 421 3503-0 Telefax +49 421 3503-393 E-mail [email protected] Web www.gestra.de Agencies all over the world: www.gestra.de ...

Max. length: 500 m. Wire screw-type connector according to the wiring diagram. Fig. 3 Wiring diagram Fig. 3 3 2 1 NRG 211 C28 A30 A24 A28 C30 C24 DC DC 24V DC 12V DC M C16 C18 A18 NRS 2-4 A22 A20 C 8 A 2 C 12 C 4 A 10 A 6 ...

Annex For details on the conformity of our equipment according to the European Directives see our Declaration of Conformity or our Declaration of Manufacturer. The current Declaration of Conformity / Declaration of Manufacturer are available in the Internet under www.gestra./de/docume ...