Triconex 3700 Series Analog Input Modules Instructions
- July 31, 2024
- Triconex
Table of Contents
Triconex 3700 Series Analog Input Modules Instructions
Ana log Input Modules
Ana log Input (AI) Modules includes three independent input channels. Each input channel receives variable voltage signals from each point, converts them to digital values, and transmits the values to the three Main Processor modules on demand. In TMR mode, one value is then selected using a mid value selection algorithm to ensure correct data for every scan.
Sensing of each input point is performed in a manner that prevents a single
failure on one channel from effecting another channel. Each Ana log Input
Module sustains complete, ongoing diagnostics for each channel.
Failure of any diagnostic on any channel activates the Fault indicator for the
module, which in turn activates the chassis alarm signal. The module’s Fault
indicator merely reports a channel fault, not a module failure—the module can
operate properly with as many as two faulty channels.
Ana log Input Modules support hot spare capability, which allows online replacement of a faulty module.
Analog Input Modules require a separate external termination panel (ETP) with a cable interface to the Triton back plane. Each module is mechanically keyed for proper installation in a Triton chassis.
Analog Input Module Specifications
| Model Number | 3700/3700A | 3701 | 3703E |
|---|---|---|---|
| Voltage | 0-5V, + 6% (only 3700A) | 0-10V | 0-5V or 0-10V1, + 6% |
| Type | TMR, AI | TMR, AI | TMR, AI |
| No. of Input Points | 32, diff, DC coupled | 32, diff, DC coupled | 16, diff, |
isolated
Isolated Points| No| No| Yes
Input Update Rate| 55 ms| 55 ms| 50 ms
Resolution| 12 bits| 12 bits| 12 bits
Accuracy| < .15% of FSR,from 0° to 60°C| < .15% of FSR,from 0° to 60°C| < .15%
of FSR,from 0° to 60°C
Input Resistance (load)| 30 MW (DC), min.| 30 MW (DC), min.| 30 MW (DC), min.
Power-Off Resistance| 30 KW (DC), typical| 30 KW (DC), typical| 30 MW (DC),
min.
Common Mode Rejection| -80 dB (DC-100Hz),typical| -80 dB (DC-100Hz),typical|
-90 dB @ 60Hz, min.-100 dB @ DC, min.
Common Mode Range| -12V to +12V peak| -12V to +12V peak| + 200V peak
Leg-to-Leg Isolation| 200 KW, typical| 200 KW, typical| 20 KW, typical
Normal Mode Rejection| | |
@ 8Hz| -3 dB| -3 dB| -3 dB
@ 60Hz| -17 dB| -17 dB| -17 dB
@ 120Hz| -23 dB| -23 dB| -23 dB
Input Over range| 150 VDC/115 VAC| 150 VDC/115 VAC| 150 VDC/115 VAC
Protection| continuous| continuous| continuous
Current Range| 0-20 mA,| 0-20 mA,| 0-20 mA,
| 250 W shunt| 500 W shunt| 250 W shunt for 5V 500 W shunt for 10V
Diagnostic Indicators| | |
Module Status| Pass, Fault, Active| Pass, Fault, Active| Pass, Fault, Active
Color Code| Yellow| Light yellow| Mustard yellow
- The voltage is selected using TriStation 1131.
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