5. Ensure that reference temperature and reference pressure, if applicable, are configured correctly.
6. Ensure that the selected API table is appropriate for the process fluid.
16.3 Batch troubleshooting
16.3.1 Batch will not start
Cause
• Previous batch not ended
• Valve is closed but the transmitter is detecting flow
• No discrete output configured for batch control
• Active alarm(s) present
• Totals were not reset
Recommended actions
1. End the batch.
2. Check for two-phase flow.
3. Verify the zero.
4. Verify the cutoffs.
5. Set up a channel to operate as a discrete output, and configure it for batch control.
16.3.2 Valve operation is backwards
Cause
• Discrete Output wiring is incorrect
• Discrete Output polarity is reversed
Recommended actions
1. Verify the wiring between the Discrete Output and the valve. The ON signal must open the valve.
Perform a loop test.
2. Change the setting of Discrete Output Polarity.
16.3.3 Valve does not operate
Cause
• Discrete Output wiring is incorrect.
• Discrete Output channel is set up for internal power. The discrete output is capable of sourcing only
7 mA. It may be necessary to switch to external power with an external power source and current limiting
resistor.
Recommended actions
1. Verify the wiring between the Discrete Output and the valve. The ON signal must open the valve.
Perform a loop test.
2. Ensure that the channel is wired and configured for external power.
3. Ensure that the valve and channel are powered.
Troubleshooting Configuration and Use Manual
May2024 MS-00809-0200-1600
178 Emerson.com