Configuration and Use Manual
00809-0100-1600
Troubleshooting
November 2022
17.20 Perform loop tests
A loop test is a way to verify that the transmitter and the remote device are communicating properly. A loop test also helps you know whether you need to trim mA Outputs.
Prerequisites
Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement and control loops.
17.20.1 Perform a mA loop test using the display
Prerequisites
Before performing an mA loop test, configure Channel B as an mA Output.
Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement and control loops.
Procedure
1. Choose Menu → Service Tools → Output Simulation and select the mA Output.
2. Set Simulation Value to 4 .
3. Start the simulation.
4. Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct the discrepancy by trimming the output.
5. Choose New Value .
6. Set Simulation Value to 20 .
7. Start the simulation.
8. Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct the discrepancy by trimming the output.
9. Choose Exit .
Postrequisites
• If the mA Output readings are within 200 microamps of each other, you can correct this discrepancy by trimming the output.
• If the discrepancy between the mA Output readings is greater than 200 microamps, or if at any step the reading was faulty, verify the wiring between the transmitter and the remote device, and try again.
17.20.2 Perform a Frequency Output loop test using the display
Prerequisites
Before performing a Frequency Output loop test, configure Channel B as a Frequency Output.
Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement and control loops.
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Configuration and Use Manual
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Procedure
1. Choose Menu → Service Tools → Output Simulation and select the Frequency Output.
2. Set Simulation Value to 1 .
3. Start the simulation.
4. Read the frequency signal at the receiving device and compare it to the transmitter output.
5. Choose New Value .
6. Set Simulation Value to 14500 .
7. Start the simulation.
8. Read the frequency signal at the receiving device and compare it to the transmitter output.
9. Choose Exit .
17.20.3 Perform a Discrete Output loop test using the display
Prerequisites
Before performing a Discrete Output loop test, configure Channel B as a Discrete Output.
Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement and control loops.
Procedure
1. Choose Menu → Service Tools → Output Simulator and select the Discrete Output.
2. Set Simulation Value to ON.
3. Start the simulation.
4. Verify the signal at the receiving device.
5. Choose New Value .
6. Set Simulation Value to OFF.
7. Start the simulation.
8. Verify the signal at the receiving device.
9. Choose Exit .
Postrequisites
If the Discrete Output readings are reversed, check the setting of Discrete Output Polarity .
17.20.4 Perform an mA loop test using ProLink III
Prerequisites
Before performing an mA loop test, configure Channel B as an mA Output.
Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement and control loops.
Procedure
1. Choose Device Tools → Diagnostics → Testing and select the mA Output to test.
210 Micro Motion 1600 with Ethernet Transmitters
Configuration and Use Manual
00809-0100-1600
Troubleshooting
November 2022
2. Enter 4 in Fix to: .
3. Select Fix mA .
4. Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct the discrepancy by trimming the output.
5. Select UnFix mA .
6. Enter 20 in Fix to: .
7. Select Fix mA .
8. Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct the discrepancy by trimming the output.
9. Select UnFix mA .
Postrequisites
• If the mA Output readings are within 200 microamps of each other, you can correct this discrepancy by trimming the output.
• If the discrepancy between the mA Output readings is greater than 200 microamps, or if at any step the reading was faulty, verify the wiring between the transmitter and the remote device, and try again.
17.20.5 Perform a Frequency Output loop test using ProLink III
Prerequisites
Before performing a Frequency Output loop test, configure Channel B as a Frequency Output.
Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement and control loops.
Procedure
1. Choose Device Tools → Diagnostics → Testing and select the Frequency Output to test.
2. Enter the Frequency Output value in Fix to .
3. Select Fix FO .
4. Read the frequency signal at the receiving device and compare it to the transmitter output.
5. Select UnFix FO .
17.20.6 Perform a Discrete Output loop tests using ProLink III
Prerequisites
Before performing a Discrete Output loop test, configure Channel B as a Discrete Output.
Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement and control loops.
Procedure
1. Choose Device Tools → Diagnostics → Testing → Discrete Output Test .
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Configuration and Use Manual
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2. If your transmitter is configured for two or more Discrete Outputs, determine which Discrete Output you want to test.
3. Set Fix To: to ON.
4. Verify the signal at the receiving device.
5. Set Fix To: to OFF.
6. Verify the signal at the receiving device.
7. Select UnFix .
Postrequisites
If the Discrete Output readings are reversed, check the setting of Discrete Output Polarity .
17.20.7 Perform an mA loop test using a web browser
Prerequisites
Before performing an mA loop test, configure Channel B as an mA Output.
Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement and control loops.
Procedure
1. Choose Device Tools → Simulation → mA Output Test .
2. Enter 4 in Fix to: .
3. Select Fix mA .
4. Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct the discrepancy by trimming the output.
5. Select UnFix mA .
6. Enter 20 in Fix to: .
7. Select Fix mA .
8. Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct the discrepancy by trimming the output.
9. Select UnFix mA .
Postrequisites
• If the mA Output readings are within 200 microamps of each other, you can correct this discrepancy by trimming the output.
• If the discrepancy between the mA Output readings is greater than 200 microamps, or if at any step the reading was faulty, verify the wiring between the transmitter and the remote device, and try again.
17.20.8 Perform a Frequency Output loop test using a web browser
Prerequisites
Before performing a Frequency Output loop test, configure Channel B as a Frequency Output.
212 Micro Motion 1600 with Ethernet Transmitters
