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777459-01

SCC Configuration Guide

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SCC Configuration Guide
SCC – Portable, Low-Cost
Signal Conditioning
• Ideal for portable measurement systems
• Wide variety of direct signal and sensor
connectivity options
• Wide range of analog and digital
conditioning options
• Measurement type selectable
on a per-channel basis
• Front-end signal conditioning
for M Series, E Series, and some
B Series multifunction DAQ devices
Configure Your SCC System in Six Steps
Step 1 – Select Your SCC Modules
(Table 1)
Analog input, analog output, and digital I/O modules have dedicated
slots. You can select up to eight noncascaded modules for analog input
and eight modules for digital I/O. You can install feedthrough modules in
any slot, but they are especially useful for accessing counter/timers on
your M Series, E Series, or B Series multifunction DAQ device.
Step 2 – Choose an SCC Carrier
(Table 2)
SCC carriers are available either with a hinged lid or with
configurable connectors using panelettes. Hinged lids provide quick
access to the modules. Configurable connectors provide custom signal-
interface options.
Step 3 – Select Your Panelettes
(Table 3)
If you have chosen an SCC carrier with configurable connectors, you can
also select connector and interface panelettes. Different carriers offer
different numbers of panelette slots. Also, some panelettes occupy more
than one slot.
Step 4 – Determine Your Power Option
(Table 4)
You can power an SCC system using a +5 VDC, 120/240 VAC, or
7 to 42 VDC external power source. To indicate the power option for your
SCC system, select 01, 02, or 03 as the last two digits of the part number
of the SC-2345 or SC-2350 carrier.
Please note that if you choose power option 01, it is possible to power
your SCC system using the internal power source of your DAQ device.
For DAQCard and DAQPad devices, the total power required by your SCC
modules must be less than 800 mW (490 mW of analog power). For PCI
or PXI and M Series or E Series multifunction DAQ devices, the total
power required by your SCC modules must be less than 4.55 W (1.74 W
for analog modules). Additional power modules are sold separately. To
determine the power requirements of the modules in your SCC DAQ
system, use the online SCC Advisor at
ni.com/advisors.
Step 5 – Select Your DAQ Device and Cable
(Table 5)
Select the DAQ device to control your system.
Step 6 – Select Your Accessories
Choose from rack/panel-mount kits and stacking kits. You can also select
additional power kits separately if your application requires multiple
power configurations.
SCC Configuration Guide
SCC Modules
Signal Types
Force, Load, Torque, Pressure
Frequency-to-Voltage
Current (0 to 20 mA)
Thermocouples
Millivolts/Volts
Accelerometer
Strain Gages
Module
SCC-AI0x
SCC-AI1x
SCC-A10
SCC-LP01
SCC-LP02
SCC-LP03
SCC-LP04
SCC-FV01
SCC-TC01
SCC-TC02
SCC-RTD01
SCC-SG01
SCC-SG02
SCC-SG03
SCC-SG04
SCC-SG11
SCC-SG24
SCC-ACC01
SCC-CI20
SCC-AO10
SCC-CO20
SCC-DI01
SCC-DO01
SCC-RLY01
1
SCC-CTR01
SCC-FT01
Number of
Channels
2 ISO
2 ISO
2 DI
2 DI
2 DI
2 DI
2 DI
2 RSE
1 DI
1 DI
2 DI
2 DI
2 DI
2 DI
2 DI
2 DI
2 DI
1 DI
2 DI
1 ISO
1 ISO
1 ISO
1 ISO
1
1 ISO
2 SE/1 DI
TTL/CMOS









































Description
Isolation amplifier
Isolation amplifier
Attenuator
Lowpass filter
Lowpass filter
Lowpass filter
Lowpass filter
Frequency-to-voltage
Thermocouple input
Thermocouple input
RTD input
Strain (1⁄4-bridge, 120
Ω)
Strain (1⁄4-bridge, 350
Ω)
Strain (1⁄2-bridge )
Strain (full-bridge)
Strain shunt calibration
Full bridge input (350
Ω)
IEPE accelerometer input
Current input
Isolated voltage output
Isolated current output
Isolated digital input
Isolated digital output
SPDT Relay
Isolated counter/timer
Feedthrough
DIO/CTR
Gain
0.2
to 200
1.2
0.1
0.5
0.5
0.5
0.5
1
100
100
25
100
100
100
100
100
2
Signal
Filtering
Range
±50 mV
10 kHz
to ±42 V
±10 V, ±5 V
4 Hz
±60 V
±10 V
25 Hz
±10 V
50 Hz
±10 V
150 Hz
±10 V
1 kHz
0 to 100 Hz
±100 mV
2 Hz
±100 mV
2 Hz
±400 mV
30 Hz
±100 mV
1.6 kHz
±100 mV
1.6 kHz
±100 mV
1.6 kHz
±100 mV
1.6 kHz
±100 mV
1.6 kHz
±5 V
19 kHz
0 to 20 mA
±10 V
0 to 20 mA
±24 VDC
30 VDC
5 A at 30 VDC
250 VAC
0 to 48 VDC
Isolation








Excitation
Sources
1 current
1 voltage
1 voltage
1 voltage
1 voltage
1 voltage
1 current
Excitation
Values
1 mA
2.5 V
2.5 V
2.5 V
2.5 V
10 V
4 mA
RTD
Page
9
9
11
12
12
12
12
13
4
4
5
6
6
6
6
6
6
8
13
10
14
14
15
15
7
16
1
The
Output
Analog Input
switching capability of SCC-RLY01 is not 5 A at 250 VAC throughout – it is 5 A at 250 VAC only if it is used with SCC-68, and it is 5 A at 30 VAC if used with SC-2345.
Table 1. SCC Module Selection Guide
BUY ONLINE
at
ni.com
or
CALL 800 813 3693 (U.S.)
2
SCC Configuration Guide
SC-2345 and SC-2350 Carriers
Recommended DAQ Devices
Description
SCC carrier with a hinged lid
SCC carrier with configurable connectors (side 68-pin interface)
SCC carrier with configurable connectors (rear 68-pin interface)
Number of Panelette Slots
18
15
Table 2. SCC Carriers
Panelettes
Product
M Series
DAQCard-6036E
DAQPad-6020E
DAQPad-6070E
68-pin PCI/PXI E Series
100-pin PCI/PXI E Series
B Series
Multifunction I/O Features
Multifunction I/O
16-bit, 200 kHz
12-bit, 100 kHz
12-bit, 1 MHz
Multifunction I/O
Multifunction I/O
Multifunction I/O
Bus
PCI, PXI
PCMCIA
USB
IEEE 1394
PCI, PXI
PCI, PXI
PCI
Cabling To
SHC68-68-EP
SHC68-68-EP
SH68-68-EP
SH68-68-EP
SH68-68-EP
SH1006868
SH68-68-EP
Table 5. National Instruments DAQ Devices
SCC Advisor
Panelette
Minithermocouple jack
Thermocouple jack
BNC
SMB
Banana jack
LEMO (B Series)
MIL-C-26482
9-pin D-Sub
Momentary switch
Toggle switch
Rocker switch
LED
Potentiometer
Strain relief
Blank
Description
J or K-type
or uncompensated
J or K-type
or uncompensated
BNC connector
SMB connector
Banana jack
2-pin female
4, 6-pin female
2, 4, or 6-pin female
Single (male – female)
Dual (male – female)
On – off
On – off – on
On – off – on
A red, green, yellow,
and orange LED
1 turn, 10 kΩ
Small
Filler panel
Connectors/Units
per Panelette
2
2
1
1
2
4
2
2
1
1
1
2
2
2
1
4
1
1
Slot Width
1
1
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
Table 3. Panelettes
For more assistance in configuring your SCC system,
visit the SCC Advisor at
ni.com/advisors.
Power Options
Power Type
+5 VDC
120 VAC, 240 VAC
7 to 42 VDC
1
AC
2
External
Power Supplied By
DAQCard/DAQPad (800 mW maximum)
PCI/PXI (4.55 W maximum)
External
1
External
2
Power Option
-01
-02
-03
transformer included. However, you must purchase a separate power cord to match your country’s power requirements.
power supply not included.
Table 4. SC-2345/SC-2350 Power Options
BUY ONLINE
at
ni.com
or
CALL 800 813 3693 (U.S.)
3
Portable, Modular Signal Conditioning Modules
NI SCC-TC Series Thermocouple Input
Specifications
SCC-TC Series
Typical for 25 °C unless otherwise noted.
Input Characteristics
Number of channels............................ 1 differential
Input signals........................................ Thermocouples of type J, K, T, B,
E, N, R, and S, ±100 mV
Input signal gain ................................. 100
Maximum input working voltage........ ±12 V of chassis ground
Overvoltage protection
to DAQ device................................. ±42 V
pk
(powered on or off)
Nonlinearity......................................... ±0.004% maximum
Gain error ............................................ ±0.08% of reading, maximum
Input impedance
Normal powered on........................ 10 MΩ
Powered off or overload................. 10 kΩ
Open thermocouple detection current 250 nA maximum
Common-mode rejection ratio ............ 110 dB minimum
Bandwidth ........................................... 2 Hz, dual-pole RC filter
Offset error.......................................... 5 µV
rms
, referred to input
Stability
Offset temperature coefficient....... ±0.6 µV/°C maximum
Gain temperature coefficient ......... ±0.0005%/°C
Cold-junction sensor (thermistor)
Output ............................................. 1.91 V (at 0 °C) to 0.58 V
(at 55 °C)
Accuracy (15 to 35 °C).................... ±0.4 °C maximum
Model
SCC-TC01
SCC-TC02
Channel
1
1
Description
Thermocouple, spade connector
Thermocouple, screw terminals
Part Number
777459-03
777459-04
The National Instruments SCC-TC01 and SCC-TC02 are single-input
modules for conditioning signals from a variety of thermocouple types,
including J, K, T, B, E, N, R, and S, and millivolt inputs with a range of
±100 mV. The NI SCC-TC modules include a 2 Hz lowpass filter, an
instrumentation amplifier with a gain of 100, and buffered outputs for
maximum scanning rates by the multifunction DAQ device. The input
circuitry of the SCC-TC modules also includes high-impedance bias
resistors for open-thermocouple detection as well as handling both
floating and ground-referenced thermocouples. The SCC-TC modules
include an onboard thermistor for cold-junction compensation.
Two versions of the SCC-TC are available. The SCC-TC01 includes a
2-prong uncompensated thermocouple jack that accepts any miniature or
subminiature 2-prong male thermocouple plug. The SCC-TC02 includes a
removable screw-terminal plug that features an additional connection for
grounding thermocouple shields.
Power Requirements
Analog ................................................. 60 mW
BUY ONLINE
at
ni.com
or
CALL 800 813 3693 (U.S.)
4
Portable, Modular Signal Conditioning Modules
NI SCC-RTD01 RTD Input
Specifications
SCC-RTD01
Analog Input
Number of input channels .................. 2 differential
Input range.......................................... ±400 mVDC (fixed gain of 25
on each channel)
Maximum working voltage
(signal + common mode) ................ Each input should remain within
±12 V of ground
Overvoltage protection ....................... ±42 V
pk
/25 VDC (powered on
or off)
Input impedance ................................. 2 MΩ in parallel with 4.7 nF
powered on; 20 kΩ min
powered off
Filter type ............................................ Lowpass 3-pole Butterworth filter
-3 dB cutoff frequency ........................ 30 Hz
System noise....................................... 4.5 µV
rms
(referred to input)
Model
SCC-RTD01
Channel
2
Description
2, 3, or 4-wire Pt RTD
Part Number
777459-18
The National Instruments SCC-RTD01 is a dual-channel module that
accepts 2, 3, or 4-wire platinum RTDs. Each channel of the
NI SCC-RTD01 has an amplifier with a gain of 25 and a 30 Hz lowpass
filter. In addition, the module has a 1 mA excitation source for powering
the RTDs.
Transfer Characteristics
Gain ....................................................
Gain error ............................................
Gain-error temperature coefficient.....
Offset error..........................................
Offset-error temperature coefficient ..
Nonlinearity.........................................
Recommended warm-up time.............
25
±1.2%
±10 ppm/°C
±250 µV RTI
±1.6 µV/°C
10 ppm of full scale
5 minutes (SCC system only)
Amplifier Characteristics
CMRR .................................................. 110 dB at 60 Hz
Output range ....................................... ±10 V
Excitation
Number of channels............................
Constant-current source .....................
Maximum voltage level without
losing regulation.............................
Drift ....................................................
1
1 mA
24 V
±127 ppm/°C
Environment
Operating temperature ....................... 0 to 50 °C
Relative humidity ................................ 5 to 90% noncondensing
Power Requirements
Analog ................................................. 135 mW maximum
Digital.................................................. 153 mW maximum
BUY ONLINE
at
ni.com
or
CALL 800 813 3693 (U.S.)
5
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