Related Manuals for GESTRA NRA 1-3
Summary of Contents for GESTRA NRA 1-3
- Page 1 Test Station NRA 1-3 NRA 1-3 mit CAN-Bus Schnittstelle NRA 1-3 Original Installation Instructions 818678-05 E n g l i s h...
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Page 2: Table Of Contents
Only for NRA 1-3 CAN: Connection of supply voltage ................12 Connecting line of measuring electrodes ....................12 Connecting line of temperature sensor for detecting the plant temperature ...........12 Only for NRA 1-3 CAN: CAN bus connection, length and size of cables ...........12 Electrical connection ..........................13 Tools ..............................13... - Page 3 Operation, alarm and test Specification of keys and indicators ......................16 Start ..............................17 Only for NRA 1-3 CAN: Setting node ID and baud rate ................17 Setting banking-up of condensate, mode 1 to 6 ..................18 Setting banking-up of condensate, mode 2 to 7 ..................19 Setting group temperatures in mode 1 and 6 ..................20...
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Page 4: Important Notes
Important notes Usage for the intended purpose Use test station NRA 1-3 only in conjunction with electrodes NRG 16-19, NRG 16-27 and NRG 16-28 for monitoring steam traps for banking-up of condensate and loss of steam. Safety note The equipment must only be installed and commissioned by qualified and competent staff. -
Page 5: Explanatory Notes
The measuring electrodes NRG 16-27, NRG 16-28 feature an additional temperature sensor for measuring the condensate temperature. The test station NRA 1-3 is designed for the connection of up to max. 16 measuring electrodes and a temperature sensor for measuring the plant temperature. -
Page 6: Technical Data
Technical Data NRA 1-3 / NRA 1-3 with CAN Bus interface Supply voltage 230 V, 50 / 60 Hz 115 V, 50 / 60 Hz optional Only NRA 1-3 with CAN Bus interface Supply voltage 24 V DC +/- 20 % via CAN Bus interface... -
Page 7: Name Plate/Marking
Technical Data - continued - NRA 1-3 - continued - Housing Housing material: ABS Cable gland / Electrical connection Cable gland with integral cable clamp, 8 x M 16 x 1.5, 17 five-pole screw-type terminals, conductor size 1.5 mm Weight approx. -
Page 8: Dimensions Nra 1-3
Technical Data - continued - Dimensions NRA 1-3 226.5 Fig. 2 Test station NRA 1-3 a Fig. 3 226.5 Test station NRA 1-3e Front panel cut-out 236 x 151... -
Page 9: Installation
Installation Test station NRA 1-3a The housing of the test station NRA 1-3a is designed for wall mounting. The four fixing holes are accessible after opening the base part. For this purpose use a screwdriver with a broad blade to lever the hinge out of the slot on the left side Fig. -
Page 10: Electrical Connection
Electrical connection Wiring diagram for test station NRA 1-3 and NRA 1-3 CAN Terminal 4 (NRA 1-3) Terminal 5 (NRA 1-3) Intermediate NRG 16-27/-28 distribution frame 2 3 4 NRG 16-19 Condensate Condensate § NRA 1-3 NRA 1-3 CAN NRA 1-3... -
Page 11: Key
Electrical connection - continued - Code switch for system configuration CAN bus interface Terminal for collective alarm Terminal for temperature sensor (system temperature) – Terminals for measuring electrodes Mode 1, 2, 4 – 7 – Channel 1 – 16 Mode 3 Mode 3 §... -
Page 12: Only For Nra 1-3 Can: Connection Of Supply Voltage
NRA 1-3. To extend the cable use screened two-core cable, e.g. Ölflex 110 CH, manufac- tured by Lapp, 2 x 0.5 mm². Max. cable length between measuring electrode and test station NRA 1-3: 100 m. Please connect screen to intermediate distribution frame. -
Page 13: Electrical Connection
Not for NRA 1-3 CAN: Install an easily accessible disconnecting switch for the test station in the close proximity of the equipment (EN 61010-1). Not for NRA 1-3 CAN: Mark the disconnecting switch as isolating device for the test station. -
Page 14: Factory Setting
Code switch 1 Fig. 4: All switches are set to OFF Node ID: 5 (only NRA 1-3 CAN) Baud rate: 250 kBit/s (length of line: 125 m ) (only NRA 1-3 CAN) Commissioning procedure Checking electrical connection... -
Page 15: Establishing Number Of Measuring Channels
If the settings of switches S1 – S7 are changed during operation, the new settings will only be accepted by the test station after the supply voltage has been switched off and on. Only for NRA 1-3 CAN: Activating CAN bus To activate the CAN bus set code switch S10 1 Fig. 4 to ON. -
Page 16: Operation, Alarm And Test
Operation, alarm and test Specification of keys and indicators LEDs 1 – 3 LED 1: Steam loss LED 2: Banking-up of condensate LED 3: Measuring electrodes NRG 16-27, NRG 16-28 defective (cable disruption, short circuit). Measuring electrodes type NRG 16-19 are not monitored. Fig. -
Page 17: Start
For more information on the codes HIS, Int and tSt see section “Alarm list, Maintenance interval and Test”, mode 1 to 7 (page 23). Only for NRA 1-3 CAN: Setting node ID and baud rate For the communication with the CAN bus each bus node requires an own address (node ID) and baud rate (speed of data transfer) setting. -
Page 18: Setting Banking-Up Of Condensate, Mode 1 To 6
Operation, alarm and test - continued - Setting banking-up of condensate, mode 1 to 6 Press key E briefly → SYS / °C ← longer Keys (1) ↓ (3) ↑ Keys (1) ↓ (3) ↑ Press key E Press key E Change tem- Press key briefly →... -
Page 19: Setting Banking-Up Of Condensate, Mode 2 To 7
Operation, alarm and test - continued - Setting banking-up of condensate, mode 2 to 7 Press key E y y y briefly → Serial poll ← longer Keys (1) ↓ (3) ↑ Keys (1) ↓ (3) ↑ Press key E Temperature Press key E briefly →... -
Page 20: Setting Group Temperatures In Mode 1 And 6
Operation, alarm and test - continued - Setting group temperatures in mode 1 and 6 Function To detect banking-up of condensate the temperature of the condensate in the steam trap is compared with the condensate temperature in the plant. The temperature sensor TRG 5-.. (Pt 100) measures the temperature of the plant. - Page 21 Operation, alarm and test - continued - Setting group temperatures in mode 1 and 6 - continued - Keys (1) ↓ (3) ↑ Press key E Change tem- Press key E briefly → ← perature briefly→ ← longer keys (1),(3) Keys (1) ↓...
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Page 22: Setting Steam Loss, Mode 1 To 4
Operation, alarm and test - continued - Setting steam loss, mode 1 to 4 Keys (1) ↓ (3) ↑ Keys (1) ↓ (3) ↑ Press key Change re- Press key E briefly ← sponse delay E briefly → → Keys (1),(3) ←... -
Page 23: Alarm Messages
Operation, alarm and test - continued - Alarm messages Fig. 7 The alarm messages “Banking-up of condensate”, “Steam loss” and “Malfunction in electrode” (short circuit, parting of cable) will be indicated in the particular operating mode by the LEDs 1 – 3 and the output relay for the collective alarm is energized. -
Page 24: Malfunctions
Operation, alarm and test - continued - Alarm list, maintenance interval and test, mode 1 to 7 - continued - Maintenance interval InT Use parameter InT to retrieve information on the remaining run time of the maintenance interval (in days). Hold down the keys 1 and 3 to reset the maintenance interval, the message clr appears and the system returns to the previous display. -
Page 25: Removing And Disposing Of The Test Station
- have achieved a recognised level of competence. Danger The terminal strips of the test station NRA 1-3 are live during operation. This presents the danger of electric shock! Always cut off power supply to the equipment before mounting, removing or connecting... -
Page 26: Annex Can Bus Telegram
Annex CAN bus telegram Directory of objects Index (hex.) Subindex (hex.) Access Data type Designation Description Tx PDO 1 2001 Uint8 Status 2001 Uint8 Operating mode 2001 Uint8 Number of channels 2001 Uint8 Terminal box 2001 Uint8 TSystem 2001 Uint8 Group 2001 Uint16... -
Page 27: Pdo
TxPDO 4 self 2004 01, 2004 02, 2004 03, 2004 04, 2005 05, 2004 06, 2004 07, 2004 08 Information content of transmitted CAN bus telegrams (PDO 1) Identifier NRA 1-3 180 (Hex) + Node ID Meaning of the fault bits:... -
Page 28: Information Content Of Transmitted Can Bus Telegrams (Pdo 3)
Annex CAN bus telegram - continued - Information content of transmitted CAN bus telegrams (PDO 3) Identifier NRA 1-3 380 (Hex) + Node ID Byte 0 T_Channel_0 Byte 1 T_Channel_1 Byte 2 T_Channel_2 Byte 3 T_Channel_3 Byte 4 T_Channel_4 Byte 5... - Page 29 For your Notes...
- Page 30 For your Notes...
- Page 31 For your Notes...
- Page 32 Agencies all over the world: www.gestra.de GESTRA AG Münchener Straße 77 28215 Bremen Germany Telefon +49 421 3503-0 Telefax +49 421 3503-393 E-mail info@de.gestra.com www.gestra.de 818678-05/12-2014cm (808737-05) · GESTRA AG · Bremen · Printed in Germany...
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