Impulse SCM9B-1000_2000 Series Uživatelský manuál Strana 2
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Isolated Intelligent Signal Conditioning Products
SCM9B
For information call 800-444-7644
102
Analog
Single channel analog input.
Maximum CMV, input to output at 60Hz: 500Vrms.
Leakage current, input to output at 115Vrms, 60Hz: <2µArms.
15-bit measurement resolution.
8 conversions per second.
Autozero & autocalibrationno adjustment pots.
Digital
8-bit CMOS microcomputer.
Digital scaling, linearization and calibration.
Nonvolatile memory eliminates pots and switches.
Digital filtering
Small and large signal with user selectable time constants from 0 to 16 seconds.
Events counter
Up to 10 million positive transitions at 60Hz max., filtered for switch debounce.
Digital inputs
Voltage levels: ±30V without damage.
Switching levels: High, 3.5V min., low, 1.0V max.
Internal pull up resistors for direct switch input.
Digital outputs
Open collector to 30V, 30mA max. load.
Alarm outputs
HI/LO limit checking by comparing input values to down-loaded HI/LO limit values
stored in memory.
Alarms: latching (stays on if input returns to within limits) or momentary (turns off if
input returns to within limits.)
Communications
Communications in ASCII via RS-232C, RS-485 ports.
Selectable baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400.
NRZ asynchronous data format; 1 start bit, 7 data bits, 1 parity bit and 1 stop bit.
Parity: odd, even, none.
User selectable channel address.
ASCII format command/response protocol.
Up to 124 multidrop modules per host serial port.
Communications distance up to 10,000 feet (RS-485).
Transient suppression on RS-485 communications lines.
Communications error checking via checksum.
Can be used with "dumb terminal".
Scan up to 250 channels per second.
All communications setups stored in EEPROM.
Power
Requirements: Unregulated +10V to +30VDC, 0.75W max (1500/2500, 2.0W max.)
Internal switching regulator.
Protected against power supply reversals.
Environmental
Temperature Range: Operating 25°C to +70°C.
Storage 25°C to +85°C.
Relative Humidity: 0 to 95% noncondensing.
1100/2100 Voltage Input Modules
Voltage ranges: ±10mV, ±1V, ±5V, ±10V, ±100VDC.
Resolution: 0.01% of FS (4 digits).
Accuracy: ±0.02% of FS max.
Common mode rejection: 100dB at 50/60Hz.
Zero drift: ±1 count max (autozero).
Span tempco: ±50ppm/°C max.
Input burnout protection to 250VAC .
Input impedance: ≤ ±1V input = 100MΩ min.
≥ ±5V input = 1MΩ min.
1 Digital input/Event counter, 2 Digital outputs.
Specifications
Typical at 25°C and nominal power supply unless otherwise noted
1200/2200 Current Input Modules
Current ranges: ±1mA, ±10mA, ±100mA, ±1A, 4-20mADC.
Resolution: 0.01% of FS (4 digits), 0.04% of FS (4-20mA).
Accuracy: ±0.02% of FS, 0.04% of FS (4-20mA).
Common mode rejection: 100dB at 50/60Hz.
Zero drift: ±1 count max (autozero).
Span tempco: ±50ppm/°C max. (±1A = ±80 ppm/°C max.)
Voltage drop: ±0.1V max.
1 Digital input/Event counter, 2 Digital outputs.
1300 Thermocouple Input Modules
Thermocouple types: J, K, T, E, R, S, B, C (factory set).
Ranges: J = 200°C to +760°C B = 0°C to +1820°C
K = 150°C to +1250°C S = 0°C to +1750°C
T = 200°C to +400°C R = 0°C to +1750°C
E = 100°C to +1000°C C = 0°C to +2315°C
Resolution: ±1°.
Overall Accuracy (error from all sources) from 0 to +40°C ambient:
±1.0 °C max (J, K, T, E).
±2.5 °C max (R, S, B, C)(300°C to FS).
Common mode rejection: 100dB at 50/60Hz.
Input impedance: 100MΩ min.
Lead resistance effect: <20µV per 350Ω.
Open thermocouple indication.
Input burnout protection to 250VAC.
User selectable °C or °F.
Overrange indication.
Automatic cold junction compensation and linearization.
2 Digital inputs, Event counter, 3 Digital outputs.
1400 RTD Input Modules
RTD types: α = .00385, .00392, 100Ω at 0°C,
.00388, 100Ω at 25°C.
Ranges:.00385 = 200°C to +850°C.
.00392 = 200°C to +600°C.
.00388 = 100°C to +125°C.
Resolution: 0.1°.
Accuracy: ±0.3°C.
Common mode rejection: 100dB at 50/60Hz.
Input connections: 2, 3, or 4 wire.
Excitation current: 0.25mA.
Lead resistance effect: 3 wire - 2.5°C per Ω of imbalance.
4 wire - negligible.
Max lead resistance: 50Ω.
Input protection to 120VAC .
Automatic linearization and lead compensation.
User selectable °C or °F.
1 Digital output.
1450 Thermistor Input Modules
Thermistor types: 2252Ω at 25°C, TD Series
Ranges: 2252Ω = 0°C to +100°C.
TD = 40°C to +150°C.
Resolution: 2252Ω = 0.01°C or F.
TD = 0.1°C or F
Accuracy: 2252Ω = ±0.1°C.
TD = ±0.2°C
Common mode rejection: 100dB at 50/60Hz.
Input protection to 30VDC .
User selectable °C or °F.
1 Digital input/ Event counter, 2 Digital outputs.
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