FOXBORO FBM42

Description

FOXBORO FBM42The High Power Contact/dc Input/Output Interface
Module (an expandable main module) and its
counterpart High Power Contact/dc Expansion
Input/Output Interface Module individually provide
high current capability on output channels and
isolation on a per channel basis. Each module
provides the following input and output functions for
digital field signals.
INPUT FUNCTIONS – 8 channels used collectively for
either:
• contact sensing only, or
• dc voltage monitoring only.
OUTPUT FUNCTIONS – 8 channels used for:
• dc output switching with an external source only
at high current ratings (e.g., to control powering
of various external loads).
Each module performs the signal conversion required
to interface these digital (i.e., on/off state) electrical
input/output signals from/to the field
sensors/actuators to/from the redundant Fieldbus.
The expandable main module independently
connects to the Fieldbus and is capable of supporting
a single expansion module. The expansion module
connects to the Fieldbus via any expandable main
module and is functionally dependent on the
supporting main module.

When used alone or in conjunction with any
expansion module, the main module executes either
the Digital I/O or Ladder Logic application program.
The configurable options for each program are Input
Filter Time, Fail Safe Configuration, Fail Safe
Fallback, and Sustained or Momentary Outputs. If the
Momentary Output
configuration is selected, then Pulse Output Interval is
also configurable. Configurable options for inputs are
exercised on a per module basis; those for outputs
are exercised on a per channel basis.
The functional, environmental and physical
specifications are applicable to both modules.
Automatic Restart from Overload
If an overload is sensed (either inrush or steady state
current exceeded), the module will open for 64.5 line
cycles and then retry again. This operation will
continue indefinitely for outputs only. Overloads
exceeding 50 A will cause damage to the module.
(a) The discrete wire or plug connector block is available on termination cable assemblies for all enclosures excluding Local Enclosures,
Field Enclosure 4 and Multiple (Bridged) Industrial Enclosure 32. The direct connection block is available only on the termination
cable assembly for Local Enclosures and Field Enclosure 4. Multiple (Bridged) Industrial Enclosure 32 uses the plug connector block
only.
FUNCTIONAL SPECIFICATIONS
Common Characteristics
ISOLATION
The module will withstand, without damage, a
potential of 600 V ac applied for one minute
between any channel and earth (ground), or
between a given channel and any other channel.
CAUTION
This does not imply that these channels are
intended for permanent connection to
hazardous voltage circuits. Connection of
these channels to voltages greater than
30 V ac or 60 V dc will violate electrical safety
code requirements and may expose users to
electric shock.
POWER REQUIREMENTS
Input Voltage Range (Redundant)
26 to 42 V dc
Consumption
Main Module Only
9 W (maximum)
Main Module Plus Expansion Module
15 W (maximum)
HEAT DISSIPATION
Main Module Only
13 W (maximum)
Main Module Plus Expansion Module
23 W (maximum)
INDICATORS (MOUNTED ON TERMINATION
ASSEMBLY)
Operational Status
2 light-emitting diodes (LED’s) 1 red and 1 green)
Input Channel Status
8 LED’s (1 per channel)
Output Channel Status
8 LED’s (1 per channel)
FIELD TERMINATION CONNECTIONS(A)
Discrete Wire Blocks
32 screw-clamp terminals (2 blocks using
16 terminals per block)
Plug Connector Block
34-pin connector. Mates with:
– Burndy MSD 34 PM 118
(plug with bar-type cable clamp)
– Burndy MSD 34 PM 124
(plug with clam shell hood)
– Burndy MSD 34 PM 824
(plug with suitcase hood)
– or equivalent
Direct Connection Block
32 screw-clamp terminals
COMMUNICATION
Via the redundant Fieldbus (main module only)