Related Manuals for GESTRA NRR 2-61
Summary of Contents for GESTRA NRR 2-61
- Page 1 Level Controller NRR 2-61 Original Installation & Operating Manual 819694-00 E n g l i s h...
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Page 2: Table Of Contents
Installing the NRR 2-61 level controller ....................... 17 Electrical connection safety notes ....................... 17 Wiring diagram for NRR 2-61 level controller ..................... 18 Wiring diagram for NRR 2-61 level controller as 3-component regulator ..........19 Electrical connection ............................ 20 Bus line, cable length and cross-section ....................20 Connecting the 24V DC power supply ...................... - Page 3 Indication of system malfunctions ......................28 What to do in the event of system malfunctions..................29 Taking out of service ............................ 29 Disposal ................................ 29 Returning decontaminated devices ......................29 EU Declaration of Conformity ........................30 NRR 2-61 - Installation & Operating Manual - 819694-00...
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Page 4: Content Of This Manual
© Copyright All rights reserved. Any misuse, particularly reproduction and dissemination to third parties, is not permit- ted. The General Terms & Conditions of GESTRA AG apply. Scope of delivery/Product package 1 x Level controller NRR 2-61 ■ ■... -
Page 5: How To Use This Manual
How to use this Manual This Installation & Operating Manual describes the correct use of the NRR 2-61 level controller. It applies to persons who integrate this equipment in control systems, install, bring into service, operate, maintain and dispose of this equipment. Anyone carrying out the above-mentioned activities must have read this Installation &... -
Page 6: Types Of Warning
Warning of a dangerous situation that may possibly result in death or serious injury. CAUTION Warning of a situation that may result in minor or moderate injury. ATTENTION Warning of a situation that results in damage to property or the environment. NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 7: Specialist Terms/Abbreviations
This type of electrically non-conductive connection makes sure the input and output circuits are electrically isolated from each other. PI controller Controller with proportional (P) and integral (I) control. SELV Safety Extra Low Voltage NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 8: Usage For The Intended Purpose
Combinations with a URW 60 universal converter* The NRR 2-61 level controller can also be used for the above applications in combination with a URW 60 universal converter * and an external level electrode (with a current output of 4-20 mA). -
Page 9: Applicable Directives And Standards
Usage for the intended purpose Applicable directives and standards The NRR 2-61 level controller has been tested and approved for use in the scope governed by the follow- ing directives and standards: Directives: Directive 2014/35/EU Low Voltage Directive ■ ■... -
Page 10: Basic Safety Notes
Check that the system is not carrying live voltage before commencing work. ■ ■ Faulty equipment jeopardises system safety. If the NRR 2-61 level controller does not behave as described on pages 25 to 26, it ■ ■ may be faulty. -
Page 11: Function
When MIN/MAX water level alarms arise, the appropriate output contact opens. Possible combinations of functions and equipment Combining the NRR 2-61 level controller with the level electrodes and the URB 60 visual display and operating unit provides the following functions:... -
Page 12: Technical Data
4 - 20 mA, e.g. for an actual value display ■ ■ 1 x analogue output OUT 2: 4 - 20 mA, control point Yw ■ ■ Max. load resistance 500 W ■ ■ NRR 2-61 - Installation & Operating Manual - 819694-00... - Page 13 ◆ ■ 2 x 1.5 mm stranded with sleeve ◆ ■ Housing attachment: Mounting clip on support rail TH 35 (to EN 60715) ■ ■ Weight Approx. 0.5 kg ■ ■ NRR 2-61 - Installation & Operating Manual - 819694-00...
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Page 14: Name Plate/Identification Nrr 2-61
TÜV . WR . xx-xxx MIN1 MIN2 MAX2 MAX1 Option CH CL CanBus GESTRA AG Münchener Str. 77 xxxxxxxxxxxx 28215 Bremen GERMANY The date of production is printed on the back of the equipment. NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 15: Factory Settings
Controlled operation: Automatic ■ ■ Pump 1: ■ ■ Pump 2: ■ ■ On threshold: 40 % ■ ■ Off threshold: 60 % ■ ■ Forced switchover: 20 % ■ ■ NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 16: Functional Elements And Dimensions
Fastening screws (M3) 4-pole code switch, for setting the controller Equipment settings, group and baud rate see page 23. Front membrane with status LED, see page 24 Housing Support rail TH 35 NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 17: Installing The Nrr 2-61 Level Controller
Installing the NRR 2-61 level controller The NRR 2-61 level controller snaps onto a TH 35 support rail in a control cabinet. DANGER There is a risk of electric shock during work on electrical systems. Switch off the voltage to the system before you install the equipment. -
Page 18: Wiring Diagram For Nrr 2-61 Level Controller
CH CL CAN bus CH = CAN High CL = CAN Low Supply voltage S = Shield On-site fuse M 0.5 A Actual value output Analogue output, control point Fig. 7 NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 19: Wiring Diagram For Nrr 2-61 Level Controller As 3-Component Regulator
Wiring diagram for NRR 2-61 level controller as 3-component regulator Relay output MIN1 MIN2 MAX2 MAX1 alarm alarm alarm alarm MIN 1 MIN 2 MAX 2 MAX 1 16 17 18 19 20 21 22 23 24 25 26 28 29 30 9 10 11 12 13 14 15 –... -
Page 20: Electrical Connection
■ ■ influences. Connecting the 24V DC power supply The NRR 2-61 level controller is supplied with 24 V DC. ■ ■ A safety power supply unit that delivers a Safety Extra Low Voltage (SELV) must be used to supply the ■... -
Page 21: Wiring Diagram Of Can Bus System
The NRR 2-61 level controller is equipped with an internal terminating resistor. ■ ■ To activate the internal terminating resistor in the NRR 2-61 level controller, insert a bridge between the terminals (“Option” and “CH”). The CAN bus network must not be interrupted during operation! ■... -
Page 22: Changing The Equipment Settings
Check that the system is not carrying live voltage before commencing work. ■ ■ You can change the baud rate and controller group of the NRR 2-61 level controller at any time using code switch D (see Fig. 6). Make changes before installing the level controller, when access is easier. -
Page 23: Configuring The Controller Group And Baud Rate
Configure the level controller as described in the Installation & Operating Manual of the URB 60 visual display and operating unit. You will find the latest Installation & Operating Manuals for the system components and ■ ■ operating units in Fig. 1 on our website: http://www.gestra.com/documents/brochures.html NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 24: Setting The Measuring Range
You can determine these values for the connected level electrode by performing calibration. To do this, read the relevant information in the Installation & Operating Manual of the NRG 26-60 or NRG 26-61 level electrode. NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 25: Bringing Into Service - Start, Operation And Alarm
The MIN2/MAX2 relays are configured as the MIN/MAX alarm on the URB 60 This conforms to the set function for actuating a continuous control valve. Startup During startup, all the relays of the NRR 2-61 continuous controller are de-energised and the LED lights up orange. Normal operation During normal operation, when the supply voltage is on and the measured level is within the MIN2 and MAX2 switchpoints, the relays (MIN1/MIN2, MAX1/MAX2) of the controller are energised. -
Page 26: The Min2/Max2 Relays Are Configured As The Pump 1/2 Enable (On/Off) On The Urb 60
Bringing into service – start, operation and alarm The MIN2/MAX2 relays are configured as the pump 1/2 enable (ON/OFF) on the URB 60 Startup During startup, all the relays of the NRR 2-61 continuous controller are de-energised. The LED lights up orange. Normal operation During normal operation, when the supply voltage is on and the measured level is within the MIN1 and MAX1 switchpoints, the MIN1 and MAX1 relays of the controller are energised. -
Page 27: System Malfunctions
Disconnect all poles of the supply cable from the mains and secure so they cannot be ■ ■ switched back on. Check that the system is not carrying live voltage before commencing work. ■ ■ Interrupting the CAN bus during operation triggers an alarm. ■ ■ NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 28: Indication Of System Malfunctions
MAX1 MIN2 MAX2 Breakdown in CAN bus communication De-ener- De-ener- Enable pump 1 or 2 gised gised Electrode failure De-ener- De-ener- De-ener- De-ener- Interruption to power supply gised gised gised gised NRR 2-61 - Installation & Operating Manual - 819694-00... -
Page 29: What To Do In The Event Of System Malfunctions
Check that the equipment is not live. Unscrew and pull off the lower terminal strip, see Fig. 6 A; B Release the slider holder on the base of the equipment, and detach the NRR 2-61 level controller from the support rail. -
Page 30: Eu Declaration Of Conformity
EU Declaration of Conformity We hereby declare that the NRR 2-61 level controller conforms to the following European Directives: Directive 2014/35/EU Low Voltage Directive ■ ■ Directive 2014/30/EU EMC Directive ■ ■ Directive 2011/65/EU RoHS Directive ■ ■ Please see our Declaration of Conformity for details on the conformity of our equipment with European Directives. - Page 31 For your notes NRR 2-61 - Installation & Operating Manual - 819694-00...
- Page 32 You can find our authorised agents around the world at: www.gestra.com GESTRA AG Münchener Strasse 77 28215 Bremen Germany Phone +49 421 3503-0 +49 421 3503-393 E-mail info@de.gestra.com www.gestra.com 819694-00/08-2019cm (808943) · GESTRA AG · Bremen · Printed in Germany...
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