Impulse SCMXRAIL1 User Manual
SensorLex 8B Isolated Analog Signal Conditioning Products
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Accessories for 8B Analog Modules
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Features
2-, 4-, 8-, 16-Position Backpanels
19-Inch Mounting Rack For Backpanels
Interface Cables
8BP02, 8BP04, 8BP08, 8BP16
2-, 4-, 8-, and 16-Position Analog I/O Backpanels
Description
The 8BP02, 04, 08, and 16 backpanels can accept any of the 8B analog I/O
modules in any mixture and can be mounted on the SCMXRK-002 19-inch metal
rack. Analog I/O signal channels provide each module with its own analog bus.
All module outputs are simultaneously accessible to high-speed data acquisition
(ADC) boards. A temperature sensor is mounted on each channel to provide
cold junction compensation for thermocouple input modules (See Figure 5 for
schematic). Field connections are terminated with four screw terminals at each
module site. Use system interface cable SCMXCA006-XX for connection to the
host system.
8B
Cable-to-Screw-Terminal Interface Board
Power Supplies
Specifications
Operating Temperature 40°C to +85°C
Relative Humidity 95% non-condensing
Interface Connector:
Field high density screw clamp, 16 AWG max
System high density screw clamp, 16 AWG max
Figure 1: 8BP02 Analog I/O Backpanel
Figure 2: 8BP04 Analog I/O Backpanel
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SensorLex 8B Isolated Analog Signal Conditioning Products
8B
Electrical
Power
The 8B backpanels have two power supply options. A +5VDC ±5% supply can
be connected to the +5V Supply terminal block, or alternatively, a wide ranging
12-28VDC supply can be connected to the Alternate Supply terminal block. In
the latter case, the 8BPWR-2 module must be installed on the backpanel. The
backpanel contains circuitry which automatically switches between the supplies
such that only one at a time provides power to the modules. When power
connections are made to both terminal blocks simultaneously, the 12-28VDC
supply takes precedence over the +5VDC supply.
Fusing
Backpanel power is fuse protected through F1 and F2. Zener diodes D3 and
D4 provide extra protection from overvoltage and supply reversal.
Grounding
For full protection against large electrical disturbances on the field-side of the 8B
modules, a #10-32 ground stud is provided on the backpanel. An electrical
connection between this ground stud and system ground should be provided
with a large gauge wire of the shortest possible length.
Ordering Information
Part Number Description
8BP02 Standard 2-channel backpanel with standoffs for mounting.
8BP02-1 8BP02 without cold junction compensation sensor. Use when
cost savings is desired and thermocouple input modules
8B37 and 8B47 will not be used.
8BP02-2 8BP02 with DIN rail mounting option. The backpanel is
captured by DIN rail mounting elements and is shipped
fully assembled.
8BP02-3 8BP02-1 with DIN rail mounting option.
8BP04 Standard 4-channel backpanel with standoffs for mounting.
8BP04-1 8BP04 without cold junction compensation sensor. Use when
cost savings is desired and thermocouple input modules
8B37 and 8B47 will not be used.
8BP04-2 8BP04 with DIN rail mounting option. The backpanel is
captured by DIN rail mounting elements and is shipped
fully assembled.
8BP04-3 8BP04-1 with DIN rail mounting option.
8BP08 Standard 8-channel backpanel with standoffs for mounting.
8BP08-1 8BP08 without cold junction compensation sensor. Use when
cost savings is desired and thermocouple input modules
8B37 and 8B47 will not be used.
8BP08-2 8BP08 with DIN rail mounting option. The backpanel is
captured by DIN rail mounting elements and is shipped
fully assembled.
8BP08-3 8BP08-1 with DIN rail mounting option.
Figure 3: 8BP08 Analog I/O Backpanel
8BP16 Standard 16-channel backpanel with standoffs for mounting.
8BP16-1 8BP16 without cold junction compensation sensor. Use when
cost savings is desired and thermocouple input modules
8B37 and 8B47 will not be used.
8BP16-2 8BP16 with DIN rail mounting option. The backpanel is
captured by DIN rail mounting elements and is shipped
fully assembled.
8BP16-3 8BP16-1 with DIN rail mounting option.
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Figure 4: 8BP16 Analog I/O Backpanel
SensorLex 8B Isolated Analog Signal Conditioning Products
8B
Figure 5: 8BP02/8BP04/8BP08/8BP16 Schematic
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