SCM5B33-04D [ETC]
Isolated True RMS Input Modules; 隔离式真RMS输入模块型号: | SCM5B33-04D |
厂家: | ETC |
描述: | Isolated True RMS Input Modules |
文件: | 总2页 (文件大小:29K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SCM5B33
Isolated True RMS Input Modules
FEATURES
DESCRIPTION
● INTERFACES RMS VOLTAGE (0 – 300V) OR RMS CURRENT (0 – 5A)
Each SCM5B33 True RMS input module provides a single channel of AC
input which is converted to its True RMS dc value, filtered, isolated,
amplified, and converted to a standard process voltage or current output
(Figure 1).
● DESIGNED FOR STANDARD OPERATION WITH FREQUENCIES OF
45HZ TO 1000HZ (EXTENDED RANGE TO 20Khz)
● COMPATIBLE WITH STANDARD CURRENT AND POTENTIAL
The SCM5B modules are designed with a completely isolated computer side
circuit which can be floated to ±50V from Power Common, pin 16. This
complete isolation means that no connection is required between I/O
Common and Power Common for proper operation of the output switch. If
desired,theoutputswitchcanbeturnedoncontinuouslybysimplyconnecting
pin 22, the Read-Enable pin to I/O Common, pin 19.
TRANSFORMERS
● INDUSTRY STANDARD OUTPUTS OF EITHER 0-1MA, 0-20mA,
4-20MA, 0-5V OR 0-10VDC
● ±0.25% FACTORY CALIBRATED ACCURACY (ACCURACY CLASS
0.2)
The field voltage or current input signal is processed through a pre-amplifier
and RMS converter on the field side of the isolation barrier. The converted dc
signalisthenchoppedbyaproprietarychoppercircuitandtransferredacross
the transformer isolation barrier, suppressing transmission of common
modespikesandsurges.Thecomputersidecircuitryreconstructs,filtersand
converts the signal to industry standard outputs. Modules are powered from
+5VDC, ±5%.
● 1500 VRMS CONTINUOUS TRANSFORMER BASED ISOLATION
● INPUT OVERLOAD PROTECTED TO 480V MAX (PEAK AC & DC) OR
10A RMS CONTINUOUS
● ANSI/IEEE C37.90.1-1989 TRANSIENT PROTECTION
● REGULATORY COMPLIANCE (TO BE DETERMINED)
For current output models an external loop supply is required having a
compliancevoltageof14to48VDC.Connection,withseriesload,isbetween
Pin 20 (+) and Pin 19 (-).
4
Pre-Amp,
Conversion
+EXC
Isochopper™
20
4
LPF
VOUT or IOUT
Amplifier
**
Surge
Suppression
and
AC Source +In
6
Pat Pending
3
2
1
IIN
*
19
22
5
3
I/O Common
RD EN\
Protection
+V
–V
–In
**
–EXC
Isolated
Computer-Side
Power
Backpanel
Term Block
17
16
+V
+5V
Isolated
Field-Side
Power
Power
Oscillator
–V
* Current Input Models Only
Add Jumpers for Current Input Modules
(provided with SCM5B33-06, 07)
Power Common
**
FIGURE 1. SCM5B33 Block Diagram.
®
Call 800-444-7644
DATAFORTH
For Information and Assistance
A Burr- Brown Company
48
SPECIFICATIONS Typical at T = +25°C and +5V power.
A
SCM5B33
Module
Input
Signal Range
100mV to 300V rms, 0 to 5A rms
45Hz to 1000Hz
Standard Frequency Range
Extended Frequency Range
Impedance
1kHz to 20kHz
1 MΩ ±1% shunted by 100pF (-01 thru -05),
0.10Ω (-06), 0.025Ω (-07)
AC
Coupling
Protection(1)
Continuous (-01 thru -05)
Continuous (-06 thru -07)
Transient (-01 thru -05)
Transient (-06 thru -07)
300V rms
10A rms
ANSI/IEEE C37.90.1-1989
See note 2
ORDERING INFORMATION
Output
Signal Range
Current Limit
MODEL
INPUT* (rms)
OUTPUT* (dc)
0-5V or 0-10V or 0-1mA or 0-20mA or 4-20mA
1.4mA (0-1mA models), 30mA (0/4-20mA models),
8mA (0-5, 0-10V models)
SCM5B33-01
SCM5B33-02
SCM5B33-03
SCM5B33-04
SCM5B33-05
SCM5B33-06
SCM5B33-07
0-100mV
0-1V
0-10V
0-150V
0-300V
0-1A
0-5V
0-5V
0-5V
0-5V
0-5V
0-5V
0-5V
Voltage Limit
Resistance
Protection
Ripple and Noise (100Khz)
±18V (0-5, 0-10V models)
50Ω (0-5, 0-10V models)
Continuous Short to Ground
0.025% Span rms
(3)(4)
Accuracy
Sinusoid
50/60 Hz
0-5A
±0.25% Span
45Hz to 1kHz
1kHz to 20kHz
Non-Sinusoid
Crest Factor = 1 to 2
Crest Factor = 2 to 3
Crest Factor = 3 to 4
Crest Factor = 4 to 5
Vs. Temperature
±0.25% Reading Additional Factor
±0.75% Reading Additional Factor
SCM5B33-01B
SCM5B33-02B
SCM5B33-03B
SCM5B33-04B
SCM5B33-05B
SCM5B33-06B
SCM5B33-07B
0-100mV
0-1V
0-10V
0-150V
0-300V
0-1A
0-1mA
0-1mA
0-1mA
0-1mA
0-1mA
0-1mA
0-1mA
±0.05% Reading Additional Error
±0.15% Reading Additional Error
±0.30% Reading Additional Error
±0.40% Reading Additional Error
±100ppm/°C
0-5A
Isolation (Common Mode)
Input to Output, Input to Power
Continuous
Transient
Output to Power
Continuous
1500Vrms max
ANSI/IEEE C37.90.1-1989
SCM5B33-01C
SCM5B33-02C
SCM5B33-03C
SCM5B33-04C
SCM5B33-05C
SCM5B33-06C
SCM5B33-07C
0-100mV
0-1V
0-10V
0-150V
0-300V
0-1A
4-20mA
4-20mA
4-20mA
4-20mA
4-20mA
4-20mA
4-20mA
50Vdc max
100dB
Rejection (50-60Hz Common Mode)
Response Time (0 to 99%)
<400ms
0-5A
Output Enable Control
Selection Time
Voltage
Max Logic “0”
Min / Max Logic “1”
Current, “0,1”
6.0µS @ CLOAD = 0 to 2000pF
SCM5B33-01D
SCM5B33-02D
SCM5B33-03D
SCM5B33-04D
SCM5B33-05D
SCM5B33-06D
SCM5B33-07D
0-100mV
0-1V
0-10V
0-150V
0-300V
0-1A
0-10V
0-10V
0-10V
0-10V
0-10V
0-10V
0-10V
+0.8V
+2.4V / +36V
0.5µA
Loop Voltage
Load Resistance (maximum)
+7.5Vdc min, +26Vdc max, -40˚C to +85˚C
(Loop Voltage - 14) / (Loop Current)
Supply Voltage
Current
+5VDC ±5%
120mA
0-5A
Sensitivity
±200ppm/%
SCM5B33-01E
SCM5B33-02E
SCM5B33-03E
SCM5B33-04E
SCM5B33-05E
SCM5B33-06E
SCM5B33-07E
0-100mV
0-1V
0-10V
0-150V
0-300V
0-1A
0-20mA
0-20mA
0-20mA
0-20mA
0-20mA
0-20mA
0-20mA
Environmental
Operating Temp. Range
Storage Temp. Range
Relative Humidity
Emissions
-40˚C to +85˚C
-40˚C to +85˚C
0 to 90% noncondensing
EN50081-1, ISM Group 1, Class A (Radiated, Conducted)
EN50082-1, ISM Group 1, Class A (ESD, RF, EFT)
2.28" x 2.26" x 0.60" (58mm x 57mm x 15mm)
Immunity
Dimensions
0-5A
NOTE:
(1) SCM5B33 and SCMPB01, 02, 03, 04, 05, 06, 07, XEV rating only. Backpanels obtained
from other sources may have lower ratings.
* Modules can be ordered with other input/output ranges. Consult factory for
ordering details and specifications.
(2) For 1 to 25 seconds the max allowable transient current rating is √2500 / (event time). For
less than 1 second, ANSI/IEEE C-37.90.1-1989 applies with a 0.05Ω load. For greater than
25 seconds, the 10A rms continuous rating applies.
(3) At standard 60Hz factory calibration. Consult factory for calibration at other frequencies.
(4) For 10-100% rated span. Add an additional 0.25% error for 0-10% Span measurements.
Accuracy includes nonlinearity, hysteresis and repeatability but not source or external shunt
inaccuracy (if used).
®
Call 800-444-7644
For Information and Assistance
DATAFORTH
A Burr- Brown Company
49
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