2. System component
18
Table 2.13 SAI012 specification
Item Specification
Model name SAI012
Number of input points 8 points
Input insulation unit 8-point common insulation (input (-) side common)
Input signal level
Bipolar:
±
10mV,
±
20mV,
±
50mV,
±
100mV,
±
1V,
±
5V (all DC)
Unipolar: 1-5VDC
Each point can be set independently. However, bipolar and
unipolar cannot coexist.
Maximum applied voltage ±
30Vpeak
Input impedance
1M
Ω
or more
Data update cycle Bipolar: 355/302ms (Selected from 50/60Hz filters)
Unipolar: 40ms
A/D conversion data Bipolar: -32000 to +32000 counts
Unipolar: +6400 to +32000 counts
CMRR 100dB or more (AC100V-50/60Hz)
Reference input precision
Within
±
0.1%/full scale
Temperature drift
Within
±
0.015/
°
C
Power supply voltage drift
Within
±
0.1%/full scale (
±
10% of system power fluctuation)
Input break characteristics Downscale
Input break detection time 2 seconds (bipolar), 10 seconds (unipolar)
Address setting Set 1 to E(1 to 14) with the front address setting switch
Failure diagnosis Analog reference voltage, transmission, CPU, memory
Insulation resistance
100M
Ω
or more(500VDC megger, between input common and
internal circuit)
Withstand voltage 500VAC/1 min (between input common and internal circuit)
Current consumption 24VDC-50mA or less (system power supply)
Internally generated heat 1.2W or less (rated condition)
Applicable base card UIOU57
Outside dimension
40W
×
90H
×
95Dmm (excluding protrusions)
Weight 200g or less