Specifications

Analog Input Modules
31007715 6/2008 67
STB AVI 1270 Specifications
Table of
Technical
Specifications
description two single-ended analog voltage input
channels
analog input voltage range +/- 10 V
resolution 11 bits + sign
returned data format IEC
module width 13.9 mm (0.58 in)
I/O base STB XBA 1000 (see p. 391)
operating voltage range 19.2 to 30 VDC
logic bus current consumption 30 mA
nominal sensor bus current consumption 225 mA, with no load
hot swapping supported* NIM-dependent**
reflex actions supported as inputs only
input response time nominal 5.0 ms both channels
isolation field-to-bus 1500 VDC for 1 min
analog module-
to-sensor bus
500 VAC rms
(when sensor bus is not used for field power)
input filter single low-pass filter at a nominal 25 Hz
integral linearity +/- 0.2% of full scale, typical
differential linearity monotonic
absolute accuracy +/- 0.5% of full scale @ 25°C
temperature drift typically +/- 0.01% of full scale/ °C
operating temperature range 0 to 60°C
storage temperature -40 to 85°C
input impedance 400 kΩ @ DC
source impedance 1 kΩ max.
maximum input voltage 50 VDC without damage
addressing requirement four words (two/channel)
offset calibration constant
1
configurable in the range -8191 ... +8191
(representing -2.56 ... +2.56 V)
maximum count
1
configurable in the range 23 800 ... 32 760
(representing 7.44 ... 10.24 V)
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