Flowserve NRS1-40.1 User Manual
GESTRA Steam Systems
NRS 1-40.1
Installation Instructions 818548-00
Control Unit NRS 1-40.1
Contents
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
2
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
3
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.
4
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.
5
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) 1
Level electrode
NRG 1x-40
Low-level limiter
(LW alarm) 2
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
Low-level limiter
(LW alarm) 1
Level electrode
NRG 1x-40
Low-level limiter
(LW alarm) 1
Level electrode
NRG 1x-40
Safety temperature
controller/limiter
Temperature
transmitter TRV 5-40
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
Safety temperature
controller/limiter
Temperature
transmitter TRV 5-40
Safety temperature
controller/limiter
Temperature
transmitter TRV 5-40
Safety temperature
controller/limiter
Temperature
transmitter TRV 5-40
6
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.
7
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
8
Technical Data
g
A
– 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
C
+
H
87
L
N
Alarm
extern
24-230 V
100 mA
IP 40 (IP20) 50 / 60 Hz 10 VA 230 V
larm
3sec.
LNN
1
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
S
-
C
L
12345 161718 2529
S
24V
CAN-BUS
DC
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
9
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
73
Fig. 2
TEST
123456789101112131415
17 1 8 19 20 21 22 23 249251026
LNN
1
1
1
2716
GESTRA
GESTRA
NRS 1-40
NRS 1-40.1
8
MAX 55°C
%
MAX 95%
IP 20
10
Fig. 3
20
-C CS
LH
1
2345678
+
TEST
11 12281329143015
20
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)
A
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
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.
G
(see Fig.4)
Tools
■
Screwdriver (5.5/100)
11
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