Woodward MicroNet TMR 5009, Installation/Hardware Manual

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Manual 85580V2 5009 Installation/Hardware
Woodward 39
Analog Inputs
The control accepts eight 4–20 mA current inputs, with each of the control’s two
ATMs accepting four inputs. All analog inputs may be used with two-wire
ungrounded (loop powered) transducers or isolated (self-powered) transducers.
Because inputs are not fully isolated, care must be taken in their application and
maintenance to avoid “ground-loop” type problems. All analog inputs have 200
Vdc common mode rejection isolation. If interfacing to a non-isolated device
which may have the potential of reaching over 200 Vdc with respect to the
control’s common, the use of a loop isolator is recommended to break any return
current paths, which could result in erroneous readings.
All eight analog inputs are programmable. When an analog input is used, the
chosen input must be wired to and configured within the control’s program to
function. Refer to Volume 3 of this manual for a complete list of programmable
analog input options.
A 24 Vdc power supply is available from the 5009 control to power external
transducers or other auxiliary devices. Isolation is provided through diodes on the
power and common lines. This 24 Vdc output is capable of providing 24 Vdc with
+10% regulation. Power connections are be made through terminals located on
system ATMs.