Hardware Specifications - YOKOGAWA UM330 User Manual

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Hardware Specifications

PV Input Signals
• Number of inputs: 1 (terminals
• Input type: Universal input system. The input type can be selected with the software.
• Sampling period: 250 ms
• Burnout detection: Functions at TC, RTD, standard signal (0.4 to 2 V or 1 to 5 V)
Upscale, downscale, and off can be specified.
For standard signal, burnout is determined to have occurred if it is 0.1 V or less.
• Input bias current: 0.05 A (for TC or RTD b-terminal)
• Measurement current (RTD): About 0.13 mA
• Input resistance: 1 M or more for thermocouple or mV input
About 1 M for DC voltage input
• Allowable signal source resistance: 250
Effects of signal source resistance: 0.1 V/ or less
2 k or less for DC voltage input
Effects of signal source resistance: About 0.01%/100 V
• Allowable wiring resistance: for RTD input
Maximum 150 /wire: Conductor resistance between three wires should be equal
However, 10 /wire for a maximum range of -150.0 to 150.0 C.
Wire resistance effect:
• Allowable input voltage:
20 V DC for DC voltage input
• Noise rejection ratio: 40 dB (50/60 Hz) or more in normal mode
120 dB (50/60 Hz) or more in common mode
• Reference junction compensation error:
1.5 C (0 to 15 C, 35 to 50 C)
• Applicable standards: JIS, IEC, DIN (ITS-90) for thermocouples and RTD
Loop Power Supply
Power is supplied to a two-wire transmitter.
(15 V DC: terminals
A resistor (10 to 250 ) connected between the indicator and transmitter converts a
current signal into a voltage signal, which is then read via the PV input terminal.
Supply voltage: 14.5 to 18.0 V DC, max. 21 mA (provided with a protection circuit
against a field short-circuit); 21.6 to 28.0 V DC, max. 30 mA (only for models with 24 V
DC loop power supply)
- - )
11 12 13
or less for thermocouple or mV input
0.1 C/10
10 V DC for thermocouple, mV, or RTD input
1.0 C (15 to 35 C)
- ; 24 V DC: terminals
14 15
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IM 05F01D02-41E 1st Edition : May 31,2000-00
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