Siemens SITRANS P320 Service Manual
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Siemens SITRANS P320 Service Manual

Pressure transmitter
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SITRANS P
Pressure transmitter
SITRANS P320/P420
Service Manual
7MF03.0 (SITRANS P320 with 4 ... 20 mA/HART)
7MF03.1 (SITRANS P320 with PROFIBUS PA)
7MF03.2 (SITRANS P320 with FOUNDATION Fieldbus)
7MF04.0 (SITRANS P420 with 4 ... 20 mA/HART)
7MF04.1 (SITRANS P420 with PROFIBUS PA)
7MF04.2 (SITRANS P420 with FOUNDATION Fieldbus)
11/2023
A5E44914141-AC
Introduction
Description
Connecting
Diagnostics and
troubleshooting
Replacing spare parts
Service and maintenance
Calibrating
List of tools and torques
Product documentation
and support
1
2
3
4
5
6
7
A
B

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Summary of Contents for Siemens SITRANS P320

  • Page 1 Calibrating List of tools and torques Product documentation and support 7MF03.0 (SITRANS P320 with 4 ... 20 mA/HART) 7MF03.1 (SITRANS P320 with PROFIBUS PA) 7MF03.2 (SITRANS P320 with FOUNDATION Fieldbus) 7MF04.0 (SITRANS P420 with 4 ... 20 mA/HART) 7MF04.1 (SITRANS P420 with PROFIBUS PA) 7MF04.2 (SITRANS P420 with FOUNDATION Fieldbus)
  • Page 2 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.

  • Page 3: Table Of Contents

    Changing nameplates ......................35 Ordering data for repair parts ..................... 35 Service and maintenance ........................37 Possible maintenance activities ..................37 6.1.1 Inspection.......................... 37 6.1.2 Maintenance........................38 6.1.3 Analysis ..........................39 Devices with functional safety .................... 39 SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 4 Calibrating ............................41 List of tools and torques ........................43 List of tools ........................43 Torques ..........................43 Product documentation and support ....................45 Product documentation ..................... 45 Technical support....................... 46 Index ..............................47 SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 5: Introduction

    The service manual contains all the information for service and maintenance of the device. For safe handling of the device, read all the operating instructions and the safety information contained therein. This service manual is aimed at service and maintenance technicians authorized by Siemens. See also Product documentation and support (Page 45)
  • Page 6 SIMATIC PDM V9.0 or higher EDD: 1.00.00 or higher FW: 1.00.08 or higher AMS Device Manager V13 or high‐   HW: 1.00.00 or higher   DTM Pactware V4.1 SP4   FC475 V3.9 or higher SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 7: Description

    ⑮ right-hand one can be used. The unused opening is closed with a blanking plug ⑬ • The ground terminal is located on the side. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 8: Exploded View Of The Device

    Connection board Display ⑥ ⑬ Enclosure Sealing ring between the cover and enclosure ⑦ ⑭ Nameplate and button cover Cover (front) with inspection window (optional) Figure 2-2 Example: Pressure transmitter (differential pressure) with explosion protection SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 9: Connecting

    Cover of the electrical cable compartment. Figure 3-1 Rear view of pressure transmitter ① 1. Use a 3 mm Allen key to loosen the safety catch ② 2. Unscrew the cover of the electrical cable compartment SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 10: Connecting The Device

    Supply voltage Process connection ③ ⑧ Cable gland Protective conductor connection/ equipotential bonding terminal ④ ⑨ Connecting terminals Ground terminal ⑤ ⑩ Test connector for DC measuring device (available Fieldbus for HART) Figure 3-2 Example SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 11 - If necessary, ground the device using the "-" connection. 5. For devices with intrinsically safe protection type, use a supply unit that corresponds to the requirements of the relevant type of protection. See also Torques (Page 43) SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 12: Closing The Device

    2. Secure each cover with the cover catch by removing the screw. For the aluminum enclosure, observe the torque (Page 43). ① 3. Close the cover over the buttons 4. Tighten the screw for the cover over the buttons. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 13: Diagnostics And Troubleshooting

    The number of overruns of the process value (set in parameters "Upper limit" and "Monitored value") has reached the threshold. Number overruns above threshold Reset and acknowledge event counter. Maintenance required Check process conditions. Check limit monitoring and event counter settings. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 14 Service: Maintenance de‐ Forthcoming end of the configured service interval. manded Maintenance is strongly recommended as soon as possible. Service: Maintenance re‐ Forthcoming end of the configured service interval. quired Maintenance of device should be planned. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 15 Reset and acknowledge event counter. Maintenance required Check process conditions. Check limit monitoring and event counter settings. Out of service Output signal does not represent process value. Maintenance alarm A firmware update has failed. Repeat the firmware update. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 16 Check for changes in process conditions or obstructions in vessel. PV status: bad The measured value is 10% higher than the physical sensor range. Maintenance alarm Review process conditions versus product specifications. Use a device that fulfills your process conditions. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 17 The pressure transducer of the measuring cell is defective. Maintenance alarm Replace the measuring cell.   Internal power supply is Defect in the internal voltage supply. out of allowable range. Replace the transmitter electronics. Process value warning SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 18 Replace the transmitter electronics. Maintenance alarm Replace the measuring cell. Invalid device configura‐ One or more of parameters are set to invalid values. tion Review configuration values and adjust as necessary. Configuration error (red) SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 19 Repair and exchange of the spare parts are not intended for devices with functional safety. Acknowledge the error in menu "Functional Safety". If the device does not display an error, repeat the safety start up. If the problem persists, replace the device. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 20 Diagnostics and troubleshooting 4.1 Diagnostic messages SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 21: Replacing Spare Parts

    Replacing the transmitter electronics Note The transmitter electronics are only available as a spare part in the "Ex i" version and may be used with devices without explosion protection. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 22: Ordering Transmitter Electronics

    7MF7903-1AB HART 7MF7903-1BB PROFIBUS PA 7MF7903-1CB FOUNDATION Fieldbus 2. Enter the serial number of your device under the order code "Y55". The serial number (S/N) can be found on the nameplate of the unit. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 23: Removing The Display

    The transmitter electronics as a spare part is marked with the serial number you specified in the order: Figure 5-1 Example 5.1.2 Removing the display 1. De-energize the device. 2. Use a 3 mm Allen key to loosen the front safety catch. 3. Unscrew the front cover. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 24: Removing The Transmitter Electronics

    4. Remove the display from the holder. ① 5. Disconnect the cable of the display from the 4-pole connector 5.1.3 Removing the transmitter electronics Requirement • You have backed up the user data. • You have removed the display. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 25 Ensure that the ribbon cable behind the transmitter electronics is not damaged. Figure 5-2 Transmitter electronics: Rear view ③ 4. If present, remove the insulation plate ② ① 5. Disconnect the sensor electronics of the 6-pin connector SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 26: Installing The Transmitter Electronics

    5. Work in the reverse order to that described in section Removing the transmitter electronics (Page 24). 5.1.5 Installing the display ① 1. Connect the cable of the display with the 4-pole connector by observing the poling: 2. Fasten the display in the holder. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 27: Commissioning The Device After Transmitter Electronics Have Been Replaced

    Measuring accuracy following measuring cell replacement After you have replaced the measuring cell, the measuring accuracy of the device may be outside the specification. To comply with the specified measurement accuracy, carry out a sensor calibration. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 28: Removing The Measuring Cell

    "Sensor calibration" of the operating instructions. 5.2.1 Removing the measuring cell Requirement • You have backed up the user data. • You have removed the display. • You have removed the transmitter electronics. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 29 For relative pressure devices, for example, use a suitable open-ended wrench. – Ensure that the ribbon cables do not kink, pinch, strain or twist. – Take care not to damage the sensor electronics. ① 3. If present, remove the ribbon cable insulation SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 30: Installing The Measuring Cell

    – Ensure that the ribbon cables do not kink, pinch, strain or twist. – Turn the measuring cell into the enclosure until it projects 2 to 3 mm. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 31: Replacing The Process Flanges

    MAWP 160 bar (2320 psi) MAWP 420 bar (6092 psi) Allen key 8 mm 10 mm Torque wrench Width across flats 16 Width across flats 18 Procedure To replace the process flanges, carry out the following steps: SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 32 – Mount the process flanges carefully so that O-rings located on the inner side do not slip out of position. 4. Ensure that the nut has been installed at the minus side. 5. Fasten the flange bolts. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 33 240 bar (PN 160 bar • 1.5) 630 bar (PN 420 bar • 1.5) Rise time 60 seconds 60 seconds Hold time 60 seconds 60 seconds Pressure drop 30 seconds 30 seconds Ensure that the measured pressure remains stable until the end of the hold time. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 34: Replacing Pushbuttons

    4. Install the replacement pushbuttons. Ensure that the buttons are inserted with the correct position and configuration (plate, seal, pushbuttons, spring). 5. Carefully press in the supplied pushbutton plate until it clicks into place. 6. Check if the buttons can be pressed correctly. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 35: Changing Nameplates

    7. Push the replacement nameplate as far as it goes on the locking screw ① 8. Tighten the locking screw Ordering data for repair parts The ordering data for the repair parts can be found in PIA Life Cycle Portal (Intranet) (https://pia- portal.automation.siemens.com/default.htm) SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 36 Replacing spare parts 5.6 Ordering data for repair parts SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 37: Service And Maintenance

    Check the installation conditions: Alignment of the device. Measured value check Check whether the measured values on the display and the measured values in the process control system match (for example: Are the values plausible and stable?) SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 38: Maintenance

    Documentation • Documentation of device state, measured values, diagnostic messages, performed activities, recommendations for operation. • Have the customer countersign the operation report on site and forward it to the operation control center. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 39: Analysis

    To ensure reliable operation of the safety function, perform the proof tests. Read the information on maintenance intervals and checking the seals and cable glands in the "Service and maintenance" section of the operating instructions. SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 40 Service and maintenance 6.2 Devices with functional safety SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 41: Calibrating

    1. Calibrate the pressure transmitter according to the guidelines for the test equipment. You can find more information about the currently released calibration procedures, the contacts and how to order the calibration procedure at: Calibration Services (https://support.industry.siemens.com/cs/sc/5524/calibration-services? lc=en-WW) SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 42 Calibrating See also Tool for design and calculation (http://www.siemens.com/pisizer) SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 43: List Of Tools And Torques

    Tightening torque for thread M10 or -20 UNF Retaining screws for rotation of the enclosure   3.8 Nm (2.8 ft lb) • Tightening torque for aluminum enclosure 3.5 Nm (2.5 ft lb) • Tightening torque for stainless steel enclosure SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 44 List of tools and torques A.2 Torques Torques Screws for safety catch   0.88 Nm (0.65 ft lb) • Tightening torque for aluminum enclosure SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

  • Page 45: Product Documentation And Support

    – "Download as html5, only PC": Open or save the manual in the HTML5 view on your PC You can also find manuals with the Mobile app at Industry Online Support (https:// support.industry.siemens.com/cs/ww/de/sc/2067). Download the app to your mobile device and scan the device QR code. Product documentation by serial number Using the PIA Life Cycle Portal, you can access the serial number-specific product information including technical specifications, spare parts, calibration data, or factory certificates.

  • Page 46: Technical Support

    (http:// www.siemens.com/automation/csi/service).   Service & support on the Internet In addition to our technical support, Siemens offers comprehensive online services at Service & Support (http://www.siemens.com/automation/serviceandsupport). Contact If you have further questions about the device, contact your local Siemens representative at Personal Contact (http://www.automation.siemens.com/partner).

  • Page 47: Index

    Customer Support, (Refer to Technical support) Diagnostic messages, 13 Downloads, 45 Hotline, (Refer to Support request) List of tools, 43 Manuals, 45 Service, 46 Service and support Internet, 46 Structure, 7 Support, 46 Support request, 46 Technical support, 46 partner, 46 personal contact, 46 Torques, 43, 44 SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...
  • Page 48 Index SITRANS P320/P420 Service Manual, 11/2023, A5E44914141-AC...

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