Testing The Built-In Pulse Input Channel - Emerson Fisher FLOBOSS 407 Instruction Manual

FloBoss 407 Instruction Manual
8. Turn the potentiometer to vary the input to simulate a transmitter. Use the ROCLINK
software to confirm the input value changes.
A positive result on the above tests would show the FloBoss 407 input is operational. Check the field
wiring and transmitters for a fault.

2.5.10 Testing the Built-in Pulse Input Channel

Equipment Required: Multimeter
Use the following tests to verify operation of the AI/PI channel when it is configured as a pulse input
(AI/PI jumper in the PI position).
1. Isolate the field device from the FloBoss 407 by disconnecting the AI/PI terminal block.
2. If the FloBoss 407 provides power to the field device, measure the voltage between terminal
"+T" and "-" of the AI/PI channel. This voltage should be 23 volts dc minimum with
jumper P15 in the 24V position (W1 open in older units), or near to input power voltage
with jumper P15 in the 12V position (W1 installed).
3. Connect a jumper from terminal "+T" to terminal "+" on the AI/PI connector. The LED
labeled PI IND on the termination board should light.
4. Connect the FloBoss 407 to a computer running the ROCLINK configuration software.
5. Again connect a jumper from terminal "+T" to terminal "+" on the pulse input connector.
The PI LED on the termination board should light. Use the ROCLINK software to confirm
that the input value changes for point A7.
Replace the termination board if the above tests indicate failure. Refer to Section 2.5.12. A positive
result on the above tests would show that the input is operational. Check the field wiring and
transmitters for a fault.
Rev 5/00
Jumper wire
Personal computer with ROCLINK software installed
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