Current to Pressure Transducer
IPT-E
Instruction Manual
www.maxcessintl.com
IPT-E
MI 850A223 1 F
Page 1 of 4
All of the information herein is the exclusive proprietary property of Maxcess International, and is disclosed
with the understanding that it will be retained in confidence and will neither be duplicated nor copied in whole
or in part nor be used for any purpose other than for which disclosed.
Copyright 2011, all rights reserved.
Periodically there will be updates to this manual. The latest version is available on our website or by calling
your regional office listed on the back page of this publication.
INTRODUCTION / DESCRIPTION
The IPT-E is a pressure controller to be mounted on a machine frame. The control signal is 4 to 20 mADC.
The IPT-E incorporates an inlet valve, an exhaust valve, and a pressure sensor all on a common manifold.
The IPT-E operates by comparing the actual pressure, as measured by the pressure sensor, to the set point
reference input signal. If the actual pressure is less than the set point, the inlet valve is opened to increase
the pressure. If the actual pressure is greater than the set point, the exhaust valve is opened to decrease the
pressure.
The device can be mounted in any orientation without need for recalibration.
INSTALLATION
The Model IPT-E is intended for mounting on any flat vertical surface capable of supporting it. See Figure 1
for dimensions. The IPT-E meets the environmental and mechanical requirements of EN50178 with the
exception that the degree of protection provided by the IPT-E enclosure is IP65 which is more stringent than
the standard.
Four mounting holes are provided for attachment of the IPT-E to the mounting surface. The mounting method
should comply with the essential requirements of the appropriate standard(s) and is the responsibility of the
installer.
Wiring to and from the enclosure must be done with double or reinforced insulation or protective screening
which provides protective separation. All wiring outside either of the IPT-E enclosure should comply with the
essential requirements of the appropriate standard(s) and is the responsibility of the installer.
Air Line Connections
Connect the air inlet, output, and exhaust air line connections to the IPT-E through the 1/8 NPT ports on the
manifold. The exhaust port can have a muffler installed, or can be routed away from the enclosure. The inlet
port incorporates a 40-micron filter screen for large contaminates, but the air supply to the unit must be
filtered, dry and free of oil. Input pressure must be greater than the maximum required output pressure and
less than 150 psi. Input air pressure above 150 psi can damage the unit.
The IPT-E should be located as close as possible to the clutch or brake being controlled. Long, oversized air
lines connecting the IPT-E to the clutch or brake must be avoided, since they reduce system response. Also,
avoid the use of undersized fittings that will limit air flow and cause excessive pressure drop downstream of
the IPT-E.
If using the optional accessory kit (see figure 2), connect the filter kit and gage kit to the air inlet and output
ports, respectively.