FOXBORO FBM201D

Description

FOXBORO FBM201D
FUNCTIONAL SPECIFICATIONS
Process I/O Communications
Communicates with its associated FCM or FCP via
the redundant 2 Mbps module Fieldbus.
Input Channels
8 isolated and independent channels
Input Range (each channel)
FBM201: 0 to 20 mA dc
FBM201b: 0 to 100 mV dc
FBM201c: 0 to 5 V dc
FBM201d: 0 to 10 V dc
Input Channels (8)
ANALOG ACCURACY (INCLUDES LINEARITY)
±0.03% of span
Accuracy temperature coefficient: ±50 ppm/ºC
FIELD DEVICE CABLING DISTANCE
Maximum distance of the field device from the
FBM is a function of compliance voltage
(22.8 V dc), wire resistance, and voltage drop at
the field device.
INPUT CHANNEL IMPEDANCE
FBM201: 61.5 Ω nominal
FBM201b: 10 MΩ
FBM201c: 10 MΩ
FBM201d: 10 MΩ
INPUT SIGNAL A/D CONVERSION
Each channel performs A/D signal conversion
using an independent Sigma-Delta converter.
INTEGRATION PERIOD
Software configurable.
COMMON MODE REJECTION
>100 db at 50 or 60 Hz
NORMAL MODE REJECTION
>95 db at 50 or 60 Hz
LOOP POWER SUPPLY PROTECTION
Each channel is channel-to-channel galvanically
isolated, current limited, and voltage regulated.
All analog inputs are limited by their design to less
than 30 mA. If the current limit circuit shorted out,
the current is limited to about 100mA.
Input Channel Isolation
Each channel is galvanically isolated from all other
channels and earth (ground). The module/TA
withstands, without damage, a potential of 600 V ac
applied for one minute between any channel and
ground, or between a given channel and any other
channel.
CAUTION
This does not imply that these channels are
intended for permanent connection to
voltages of these levels. Exceeding the limits
for input voltages, as stated elsewhere in this
specification, violates electrical safety codes
and may expose users to electric shock.
Power Requirements
INPUT VOLTAGE RANGE (REDUNDANT)
24 V dc +5%, -10%
CONSUMPTION
7 W (maximum)
HEAT DISSIPATION
3 W (maximum)
Calibration Requirements
Calibration of the module and termination assembly is
not required.