Flowserve NRS1-40.1 User Manual

GESTRA Steam Systems

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NRS 1-40.1

Installation Instructions 818548-00

Control Unit NRS 1-40.1

Page

Important Notes

Usage for the intended purpose...............................................................................................................4

Safety note..............................................................................................................................................4

Classification pursuant to article 1 of the Pressure Equipment Directive (PED) .........................................4

ATEX (Atmosphère Explosible) .................................................................................................................4

Explanatory Notes

Scope of supply.......................................................................................................................................5

System description..................................................................................................................................5

Function..................................................................................................................................................7

Technical Data

NRS 1-40.1.............................................................................................................................................8

Name plate / Marking..............................................................................................................................9

Dimensions ...........................................................................................................................................10

Installation

Control unit NRS 1-40.1 ........................................................................................................................11

Change settings ....................................................................................................................................11

Mount control unit.................................................................................................................................11

Tools.....................................................................................................................................................11

Functional Elements

Key .......................................................................................................................................................12

Wiring

Bus cable, cable length and size ...........................................................................................................13

Change baud rate..................................................................................................................................13

Wire terminal strip.................................................................................................................................13

Wiring diagram for control unit NRS 1-40.1 ...........................................................................................14

Wiring diagram for CAN bus system - example - ...................................................................................15

Tools.....................................................................................................................................................16

Basic Settings

Factory settings.....................................................................................................................................16

Commissioning

Change configuration ............................................................................................................................17

Contents

Page

Start, Operation, Alarm and Test

NRS 1-40.1 .......................................................................................................................................... 19

System Malfunctions

Causes ................................................................................................................................................. 21

Systematic fault finding procedure for system malfunctions.................................................................. 22

Fault finding list for troubleshooting system malfunctions: Limiters 1–4 ............................................... 24

Fault finding list for troubleshooting system malfunctions: Control Unit ................................................. 25

Action against high frequency interference ........................................................................................... 25

Replace control unit.............................................................................................................................. 26

Check installation and performance

Check switchpoints............................................................................................................................... 26

Malfunctions

Fault finding list for level electrode NRG 1.-40 / control unit NRS 1-40.1............................................... 27

Fault finding list for level electrode NRG 1.-41.1 / control unit NRS 1-40.1............................................ 28

Fault finding list for temperature transmitter TRV 5-40 / control unit NRS 1-40.1 .................................. 28

Emergency Operation

Emergency operation of water level limiting system LW ........................................................................ 29

Annex

CAN bus ............................................................................................................................................... 30

Factory set node IDs ............................................................................................................................. 30

Node ID ................................................................................................................................................ 31

Change node ID .................................................................................................................................... 31

Table Node ID ....................................................................................................................................... 32

Decommissioning................................................................................................................................. 32

Disposal ............................................................................................................................................... 33

Declaration of Conformity ..................................................................................................................... 33

Important Notes

Usage for the intended purpose

The control unit NRS 1-40.1 must only be used in conjunction with the associated sensors for monitoring water level and temperature limits.

The equipment can be used as

■

Low -level limiter (min. water-level alarm) or as low-level limiting system in conjunction with level electrode NRG 1x-40,

■

as high level alarm in conjunction with level electrode NRG 1x-41.1 and

■

as safety temperature controller/limiter in conjunction with temperature transmitter type TRV 5-40. A combination of these functions is possible. Any type of use differing from the usage described above must be considered as improper. The resulting

risk will have to be borne by the user alone. The manufacturer hereby expressly rejects any claims for any damage resulting from improper usage.

Safety note

The equipment must only be installed and commissioned by qualified and competent staff. Retrofitting and maintenance work must only be performed by qualified staff who - through adequate training - have achieved a recognised level of competence.

Danger

The terminal strips of the control unit NRS 1-40.1

are

live during operation.

This presents the risk of severe cases of electric shock! Always cut off power supply to the equipment before mounting, removing or connecting the terminal strips!

Classification pursuant to article 1 of the Pressure Equipment Directive (PED)

Category IV

Designation Safety accessory

CE marking CE 0525

ATEX (Atmosphère Explosible)

According to the European Directive 94/9/EC the equipment must not be used in potentially explosive areas.

Explanatory Notes

Scope of supply

NRS 1-40.1

1 Control unit NRS 1-40.1 1 Terminating resistor 120Ω 1 Installation manual

System description

The control unit NRS 1-40.1 has four limiting functions for monitoring the MIN/MAX water levels (low/high level alarms) and MAX temperature in steam and (pressurised) hot water plants in accordance with TRD and EN 12952 and EN 12953.

The level electrodes type NRG 1x-40, NRG 1x-41.1 and the temperature transmitter type TRV 5-40 detect the current water level and temperature and their readings are sent as a data telegram to the CAN bus.

The CANopen protocol is used for the data transfer via CAN bus. Only one limiting system with one control unit NRS 1-40.1 may be used per CAN bus network.

Explanatory Notes

– continued –

System description

– continued –

By connecting the level electrodes and the temperature transmitter with the control unit the following combinations of functions are possible:

Control unit NRS 1-40.1

Function 1 Function 2 Function 3 Function 4

Low-level limiter (LW alarm) Level electrode NRG 1x-40

Low-level limiter (LW alarm) 1 Level electrode NRG 1x-40

Low-level limiter (LW alarm) 2 Level electrode NRG 1x-40

High level limiter (HW alarm) Level electrode NRG 1x-41.1

Low-level limiter (LW alarm) 1 Level electrode NRG 1x-40

Safety temperature controller/limiter Temperature transmitter TRV 5-40

Low-level limiter (LW alarm) 2 Level electrode NRG 1x-40

Safety temperature controller/limiter Temperature transmitter TRV 5-40

Low-level limiter (LW alarm) 2 Level electrode NRG 1x-40

Safety temperature controller/limiter Temperature transmitter TRV 5-40

High level limiter (HW alarm) Level electrode NRG 1x-41.1

Safety temperature controller/limiter Temperature transmitter TRV 5-40

Explanatory Notes

– continued –

Function

At regular intervals the control unit NRS 1-40.1 evaluates the data telegram coming from the level electrodes NRG 1x-40, NRG 1x-41.1 and the temperature transmitter TRV 5-40. This data telegram contains:

■

An alarm when the electrode NRG 1x-40 emerges and/or when the electrode insulation is defective,

■

An alarm when the electrode NRG 1x-41.1 enters into the water and/or when the electrode insulation is defective,

■

An alarm when the adjusted cut-off temperature is exceeded (temperature transmitter TRV 5-40),

■

The result of the self-checking routine (detection of measured value),

■

The temperature in the electrode terminal box and the casing of the temperature transmitter.

When a level or temperature alarm is raised the safety circuit is interrupted after the de-energizing delay. The control unit does not lock automatically. This function must be implemented in the following circuit.

The safety circuit will be interrupted instantaneously with the following malfunction alarms:

■

Malfunction in the level electrodes (self-checking negative, temperature in terminal box too high),

■

Malfunction in the temperature transmitter (self-checking negative, temperature in casing too high),

■

Malfunction in the control unit (self-checking negative),

■

Communication malfunction.

The self-testing routine checks the safety functions of the controller, the level electrodes and the temperature transmitter. This self-test is carried out every 3 seconds in the controller and every 10 seconds in all other pieces of equipment.

An additional self-testing routine checks every 6 hours the de-energizing of the output relays in the controller.

Malfunction messages are updated during each self-checking routine. If there is no malfunction the messages will be deleted automatically and the safety circuit is closed again. However, if the malfunction still persists, the malfunction message will remain.

Alarm and malfunction messages are indicated by LEDs, and the signal output is instantaneously energized.

Technical Data

NRS 1-40.1

Type approval no.

TÜV. SWB/SHWS. 03 –413 EG BAF-MUC 03 07 103881 004

Input/output Interface for CAN bus to ISO 11898 CANopen

Output voltage supply for sensors 18–36V DC, short-circuit protected

Output safety circuit 2 volt-free relay contacts, locally connected in series. Contact material AgNi 0.15. Max. contact rating with a switching voltage of 24V AC/ DC, 115V AC and 230V AC: resistive / inductive 4A. Provide contactors with RC combinations according to manufacturer's specification to ensure interference suppression.

Signal output 1 Photo MOS output for external signalling, alarm signal instantaneous, malfunction signal timed. 24-230 V AC /DC, max. current rating 100mA, NO contact.

Factory setting of de-energizing delay of output relay

3 seconds, other time delays (15, 25, etc.) on request

Indicators and adjustors 4 Pushbuttons for operation / "TEST", 4 LEDs for alarm and malfunctions messages, 1 LED "Power", 1 LED bus status, controller malfunction message 1 Ten-pole code switch for setting node ID and baud rate. 1 Six-pole code switch for system configuration

Internal self-checking routine Every 3 seconds

Periodic testing of output relay contacts Every 6 hours

Mains supply 230V + 10 /- 15%, 50-60 Hz or 115V + 10 /- 15%, 50-60 Hz

Power consumption 10 VA,

Protection Casing: IP 40 to EN 60529 Terminal strip: IP 20 to EN 60529

Admissible ambient temperature 0- 55°C

Technical Data

– continued –

NRS 1-40.1

– continued –

Casing

Casing material: Base: black polycarbonate; front panel: grey polycarbonate, Cross section of connector: 1 x4.0 mm² solid or 1x2.5 mm² stranded wire with sleeve to DIN 46228 or 2x1.4mm² stranded wire with sleeve to DIN 46228 Terminal strips separately detachable Fixing of casing: Mounting clip on supporting rail TH 35, EN 60715.

Weight Approx. 0.8kg

Name plate / Marking

Steuergerät control device appareille de commande

Alarm extern 24-230 V 100 mA

IP 40 (IP20) 50 / 60 Hz 10 VA 230 V

larm

3sec.

LNN

Sicherheitsstromkreis protection circuit circuit de securite

Safety note

Characteristics

CAN bus

Wiring diagram

Betriebsanleitun beachten

See installation instructions

Voir instructions de montage

IN / OUT: CAN-Bus 18-36 V DC

12345 161718 2529

24V

CAN-BUS

Equipment designation

Node ID Mains supply /

protection Pressure/temperature range

Type approval no.

Manufacturer

Fig. 1

GESTRA AG

Münchener Str. 77

D-28215 Bremen

250 V ~ T 2,5 A

VS.-Nr.:XX

Mat.Nr.: Xxxxxx

Spare part specification

Fuse

CE marking

0525

Technical Data

Dimensions

– continued –

2716 17 18 19 20 21 22 23 24 25 26 28 29 30

GESTRA

GESTRA NRS 1-40

NRS 1-40.1

100

Fig. 2

TEST

123456789101112131415

17 1 8 19 20 21 22 23 249251026

LNN

2716

GESTRA

GESTRA NRS 1-40

NRS 1-40.1

MAX 55°C

MAX 95%

IP 20

Fig. 3

-C CS

2345678

TEST

11 12281329143015

Installation

Control unit NRS 1-40.1

Note

When changing the default factory settings (see page 16 and 17) the following steps:

■

Change baud rate,

■

Change configuration (see section “Commissioning“) and

■

Change node ID (see section “Annex“)

must be carried out before mounting the equipment. Make sure that the terminal strips are unplugged before performing the work in a single operation.

Change settings

1. Unplug the upper and lower terminal strips . (see Fig.4)

2. The terminal strip can be unplugged after undoing the right and the left fixing screws .

3. Set code switch and as required.

4. Re-insert terminal strips and fasten the fixing screws .

D E

A B C

Mount control unit

The control unit NRS 1-40.1 is clipped onto a support rail type TH 35, EN 60715 in the control cabinet.

(see Fig.4)

Tools

■

Screwdriver (5.5/100)

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