Spectrum-controls 140 ACI 051 00sc Manual do Utilizador descarregar pdf (Página 47)

Installation Instructions

32-Channel Analog Input Module

Quantum Series 140 AxI 05x 00sc

6.4 Channel Update Rate

The module’s channel update rate is determined by the filter frequency

selection. A lower filter frequency takes longer to update each channel.

The following table shows the single channel update rate and 32 channel

update rate for each filter frequency.

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 fre-

quency 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 for a 10hz filter with periodic calibration enabled.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 56 57

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Spectrum-controls 140 ACI 051 00sc Manual do Utilizador Página 47