Emerson Fisher FLOBOSS 407 Instruction Manual page 88

FloBoss 407 Instruction Manual
4. If the analog output is unable to drive the field device to the 100% value, confirm the +V (1 to 5
volts) voltage is present at the field device.
♦ If the voltage is present and the device is not at the 100% position, the resistance value of the
device is too large for the +V voltage. A field device with a lower internal resistance should
be used.
♦ If the voltage is not present at the field device, but it is present at field wiring terminal B,
there is excessive resistance or a break in the field wiring.
3.5.3 Discrete Input Source Module
Equipment Required:
Place a jumper across terminals B and C. The LED on the module should light and the status as read by
the ROCLINK software should change to "1". With no jumper on terminals B and C, the LED should
not be lit and the status should be "0". If the unit fails to operate, make sure a correct value for the
module resistor is being used.
3.5.4 Discrete Input Isolated Module
Equipment Required:
Supply an input voltage across terminals B and C. The LED on the module should light and the status
as read by the ROCLINK software should change to "1". With no input on terminals B and C, the LED
should not be on and the status should be "0". If the unit fails to operate, make sure a correct value for
the module resistor is being used.
3-32
Jumper wire
Voltage generator capable of generating 11 to 30 V dc
Personal Computer running ROCLINK Software
Rev 5/00