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Analog Input Module
RTD Input Module
Module Specifications
Module Characteristics
Number of Channels
Scan time
Fault detection
Normal mode rejection
Common mode rejection
Common mode voltage
Normal mode voltage
Isolation:
User input to logic, user input to frame
ground.
Channel to Channel
Current drawn from BIU power supply
Digital Resolution
Operating temperature range
Channel Characteristics
RTD types
Resistance ranges
Accuracy , at 25 C
Temperature sensitivity (0 to 60C)
Maximum lead resistance
Keying Locations
Optional keying locations for the RTD Module are:
Four 3-wire and/or 4-wire RTDs
60 Hz: approximately 210 milliseconds per point
50 Hz: approximately 230 milliseconds per point,
Open RTD, input short, underrange, overrange, and high/low alarm
60dB, at 50/60 Hz, 100% span
120 dB at 50/60Hz, 100 ohm imbalance
250 Vrms (350 VDC or peak AC)
100% overrange DC or peak AC operational
28 VDC or peak AC maximum
1500 VAC for 1 minute, 250 VAC continuous.
250 VAC continuous.
190 mA maximum
15 bits plus sign
0 to 55 Degrees C ambient
10, 25, 100, and 1000 ohm platinum
10 and 100 ohm copper
100, 50, and 120 ohm nickel
604 ohms and 1000 ohms nickel/iron
0 to 500 ohms
0 to 3000 ohms
RTD: +/–0.15% of reading, +/–0.3 to 0.5 degree Celsius, depending
on type
+/–0.004% of reading, +/–1.5µV per C referred to input
5 ohms per lead
Keying Locations
A
B
C
D
n
n
E
F
G
H
n n
GFK-1206D
June 1997
J
K
7
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