Specifications

SECTION 3: WIRING AND INSTALLATION T200 User's Manual
PAGE 3-73
3.15.3 General Purpose Description of the Analog Inputs
The T200 has two differential analog input stages (Analog-Reference REF± and Spare-Analog-Input SAIN± on
connector J1 as shown in Figure 3.45).
Figure 3.43:- T200 Analog Input Description
Note that:
§ Input Impedance is 10k Ω.
§ Analog input maximum voltages
Maximum input voltage wrt PE:- 30V.
Maximum differential voltage:- 30V.
§ All T200 analog inputs are isolated from high voltage circuitry internally by double insulation standard isolation,
and are considered Safety Extra Low Voltage circuitry.
§ A/D Converter resolution is 12bits:- each 4.88mV input voltage step represents 1 conversion bit.
§ An approx. 1kHz analog filter is placed before the A/D converter
§ Analog Inputs are sampled approximately every 320microseconds to 500microseconds, depending upon the
software configuration.
10kOhms
10kOhms
10kOhms
10kOhms
-
+
12Bit A/D Converter
AGND
Analog_Input +
Analog_Input -
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