ENTEGRIS, INC.
USER GUIDE
13
INVUE INTEGRATED FLOW CONTROLLERS, MODELS NT6510, NT6520
Output Load Resistance Effects
Using a 24 VDC power supply, the
two 4–20 mA output loops (flow and
pressure) will experience no shift if
the load resistance is 0–600 ohms.
Reverse Polarity Protection
The flow controller is reverse
polarity protected; connecting the
24 VDC power to any wires will not
harm the unit. To operate properly,
the polarity must be correct.
Over-voltage on any Wire (DC)
In the event of accidental applica-
tion of voltage greater than 24 VDC
±10%, the flow controller will with-
stand continuous 30 VDC on any
wire without compromising the unit.
Over-voltage on any Wire (AC)
The flow controller is not designed
to withstand the accidental appli-
cation of 110/220 VAC to any wire.
Application of AC voltage will
damage the unit.
Short Protection
The flow controller will not be
damaged or compromised in any
way if any combination of wires
are shorted together.
Circuit Protection
Fuse the three input power lines to
each individual InVue Integrated
Flow Controller. The three lines are:
• 2-Red/Pin R, +24 VDC (main
power, 1.0 Amp nominal)
• 3-Orange/Pin M, Flow output,
+24 VDC supply
• 4-Yellow/Pin T, Pressure output,
+24 VDC supply
Use a 2 Amp rated, time lag fuse.
A single fuse can be used for all
three input power lines combined,
or individually, as preferred. Place
the fusing on the input power lines to
the unit at the equipment electrical
enclosure to ensure that both the
wiring to the unit and the unit itself
are protected from any over-current
condition. Best practice is to locate
the fuse away from the typical liquid
exposure or harmful vapor areas.
Locating it within the electrical
enclosure shared by the power
supply enables accessibility for
troubleshooting or replacement.
NOTE:
Do not power down the unit
until the homing cycle is complete.
