Mounting and Wiring
Signal Wiring
Analog inputs (module ID 1)
A universal Analog Input module accepts a variety of input signals from field devices as summarized in Table 9. Figure 13 illustrates the terminal block connections for the various inputs. See Specifications section for more details on all I/O module specifications. One AI module can be configured to accept multiple input types.
Table 9 Universal analog input module specifications
Specification
Description
Input Types
Number of Inputs
mV, V, mA, T/C, RTD, and Ohms
4 per module, up to 16 modules per controller (64 inputs)
Signal Source | Thermocouple with cold junction compensation, for operation between 32 °F to |
| 176 °F (0 °C to 80 °C) |
| Line resistance up to 1000 ohms, T/C, mV, mA, V |
| RTD Pt 100 |
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|
Input Impedance | 10 Megohms for T/C, mV inputs, |
| > 1 Megohms for volt inputs |
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Field Wiring
+12
- | 11 | Channel 4 | Thermocouple Input |
| Current Input mA |
RTD | 10 |
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| + |
| + | ||
| 1 |
| 4 to 20 | ||
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| * | ||
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| T/C, mV, V | mA | ||
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+ | 9 |
| - | Source | - |
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- | 8 | Channel 3 |
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RTD | 7 |
| Ground Terminal | Ground Terminal | |
+ | 6 |
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| * A 250 ohm resistor is required for | |
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| the input range. | |||
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- | 5 | Channel 2 | mV, V Inputs |
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RTD | 4 |
| RTD Input (3 wires) | ||
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| + |
| + |
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| mV or V |
| |
+ | 3 |
| Source |
| - |
| - |
| |||
- | 2 | Channel 1 |
| RTD |
|
RTD | 1 |
| Ground Terminal |
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| Ground Terminal |
Figure 13 AI module terminal block connections
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