Overview
2-6
Part 1105779-04
E 2014 Nordson Corporation
Gun Control Cards
Each gun control card in the card cage provides electrostatic controls for
two powder spray guns. The cards provide 0−21 Vdc power to the Sure
Coat and Versa-Spray gun voltage multipliers and process feedback from
the guns for display on the operator interface.
For Tribomatic guns, the cards monitor the current feedback and provide the
operator with a reading indicating the electrostatic charge generated in the
guns.
iFlow Digital Flow Modules
The iControl system controls air flow to the spray gun powder pumps,
providing a more consistent and steady flow of powder to the spray guns
than systems that control air pressure. The flow controls consist of the
precision regulators and iFlow digital flow modules mounted in the iControl
enclosure.
One regulator supplies air to two iFlow modules. Each module supplies
flow-rate and atomizing air to two powder pumps, plus gun air (electrode
wash air) to two spray guns. Flow-rate and atomizing air is turned on and
off when the spray guns are triggered on and off.
The modules provide closed-loop control of flow-rate and atomizing air flow,
constantly sensing the output and adjusting it to maintain air flow at the
preset settings. The regulators provide air at a constant pressure to the air
flow modules so the closed-loop control can operate at the calibrated range.
The regulators are set 5.86 bar (85 psi) at the factory—do not change their
settings.
Maximum output per powder pump is 13.6 m
3
/hr (8 scfm). Each channel
(flow or atomizing air) has a maximum output of 6.8 m
3
/hr (4 scfm).
Two solenoid valves on the modules control the flow of gun air (electrode
wash air) to the spray guns. The air flow is regulated by a fixed-orifice
restrictor at the output. The solenoids can be set to turn on and off as the
guns are triggered or for continuous flow.
Communication between the iFlow modules and the iControl PC is through
the CAN network.
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