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Multi-Input/Output Device
Product Specifications
2
Product Specifications
2.1
Overview and Application
The FieldConnex
discrete inputs, discrete outputs, 1 frequency input, and 1 counter to process control systems.
The device is is suitable for DIN rail mounting and field installation with different housing
options. The F2 type housing is made of sturdy cast aluminum for installation in rough
environments. Fieldbus and sensor-actuator cable entries can be selected individually from a
range of cable glands. Optionally, either screw terminals or spring terminals can be chosen.
Contact your Pepperl+Fuchs representative for further information on housing options.
The device can be installed in hazardous areas Zones 1, 21, 2, 22, and Division 1, 2.
FOUNDATION Fieldbus and input/output sensor and actuator connections are rated
intrinsically safe for installation in Zone 0 and Division 1.
The device provides different configurable modes of operation.
The valve coupler mode allows connecting 4 low-power valves with 2 end position inputs per
valve.
The sensor input mode allows connecting up to 12 binary sensors. 4 sensor inputs are
designed to support vibrating forks for level control. In frequency mode, 1 frequency input and
8 discrete inputs are provided. In counter input mode, 1 counter input and 8 discrete sensor
input modes are provided.
The MIO is intended to be used as a replacement for Pepperl+Fuchs process interface FD0-
VC-Ex4.FF.
2.2
Modes of Operation
The device supports 12 hardware channels which can be configured as inputs and outputs.
The functional configuration of the channels is determined by selecting a dedicated mode of
operation.
Valve Coupler Mode
In the valve coupler mode, the channels 1, 4, 7, and 10 are used to control 4 low power valves.
The channels 2, 3, 5, 6, 8, 9, 11, and 12 are used as valve position feedback inputs for
NAMUR proximity switches or mechanical switches. An auxiliary valve is used as a pilot valve
for 1 actuator which can be provided with final position feedback contacts to feed back the
drive position. In the manual, the term "valve" denotes the overall chain consisting of auxiliary
valve, control drive, and regulation unit. Condition monitoring functions like stroke counter,
partial stroke test, and travel time survey allow to detect evolving faults, before they become
critical for the process control.
The device is designed particularly for intrinsically safe low power auxiliary valves in 6 V design
that control the supply of compressed air to the drive. An auxiliary valve of this type is triggered
by an intrinsically safe current (I
U
= 6.4 V ... 7.9 V, I
S
Refer to the technical data of the MIO for specification of compatible valves and sensors. A list
of compatible low power valves and NAMUR sensors are available on the Pepper+Fuchs
website.
Multi-Input/Output device (MIO) for FOUNDATION Fieldbus provides
®
).
S
= 1.5 mA
S
7
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