YOKOGAWA SC150, Instruction Manual

Page: 26 / 58

IM 12D7B4-E-H
20
5-6. mA Output Setup
General
The general procedure is to define the
function (control, output, Simulate, off) of
the output and the process parameter
connected to the output first.
Available process parameters depend on
selected sensor type and measurement
setup.
mA1/mA2
Off: : When an output is set off the
output is not used and will
give an output of 4 mA
Control : A selection of P- PI- or PID
control
Direction: : Reverse
If the Process variable
increases to the Setpoint
(Process variable too high)
the output of the controller is
decreased (reverse action).
: Direct
If the Process variable
increases to the Setpoint
(Process variable too high)
the output of the controller is
increased (direct action).
Output : Linear or table output
Simulated : Percentage of output span:
normal span of outputs are
limited from 3.8 to 20.5 mA
Burn set Low or High will give an output of
3.6 resp. 21 mA in case of Fail situation.
100%
0%
set
point
process
value
Direct
100%
0%
set
point
process
value
Reverse
Fig 5-1. Direct/Reverse action