Spectrum-controls 140 ACI 052 00sc Manual do Utilizador descarregar pdf (Página 53)

Filter -3db 1 channel 32 channel

Frequency Frequency Update Time Update time

10 Hz 2.62 Hz 308 ms 9.9 sec

50 Hz 13.1 Hz 68 ms 2.2 sec

60 Hz 15.7 Hz 58 ms 1.9 sec

1K Hz 262 Hz 12 ms 384 ms

☞ Note: Channel update time is the time required for the module to acquire an input sign and

update the modules data registers. The scan rate of the Quantum system will vary with

application ladder and system configuration.

☞ Note: Periodic system calibration will also effect channel update times for one scan cycle.

6.5 System Resolution and Accuracy

The system resolution listed below is the smallest input signal change that the

ADC can detect. The resolution level is affected by the filter frequency selected.

Filter ADC Voltage Current

Frequency Resolution Resolution Resolution

10 Hz 22.5 Bits 3 µV 3 NA

50 Hz 20 Bits 19 µV 19 NA

60 Hz 20 Bits 19 µV 19 NA

1K Hz 10.5 Bits 14 mV 14 µA

The resolution levels for the voltage mode and current mode apply to the full scale

input ranges.

System accuracy is the total error between an actual input signal level and the

module output data value. System accuracy is effected by external wiring, signal

noise, filter frequency, calibration, temperature, and output data formats. The table

below lists that system accuracy verses temperature.

Temp Voltage Mode Current Mode

25°C Typical ±0.03% ±6 mV ±0.05% ±10µA

60°C Max ±0.5% ±10mV ±010% ± 20µA

☞ Note: Accuracy calculations are based on the full scale current and voltage input range.

These are 0 to 20 mA and ±10V respectively.

Installation Instructions

32-Channel Analog Input Module

Quantum 140 ACI 052 00sc

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Spectrum-controls 140 ACI 052 00sc Manual do Utilizador Página 53