The GE IC693MDL655, also cataloged as the IC693MDL655 Discrete Input Module, operates as a dedicated hardware component for binary state monitoring within Series 90-30 platforms. The high-density component interfaces field-side switches, pushbuttons, and proximity sensors across the backplane by converting 24 VDC nominal voltage inputs into logic-level status bits.
| Parameter | Specification |
|---|---|
| Model | IC693MDL655 |
| Brand | GE Fanuc Emerson |
| Origin | USA |
| Weight | 0.28 kg (0.63 lbs) |
| Dimensions | Single-slot baseplate profile |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 195 mA @ 5 VDC (backplane bus); 224 mA @ 24 VDC |
| Input Channel Count | 32 points (Arranged in 4 isolated groups of 8 channels) |
| Nominal Input Voltage | 24 VDC |
| Input Voltage Range | 0 to 30 VDC |
| Logic Configuration | Positive / Negative logic (Sink / Source) |
| Nominal Input Current | 7 mA per channel @ 24 VDC |
| On-State Threshold | 11.5 to 30.0 VDC (3.2 mA minimum current) |
| Off-State Threshold | 0 to 5 VDC (1.1 mA maximum current) |
| Signal Filter Delay | 2 ms maximum (On / Off typical response) |
| Isolation Breakdown | 1500 V between field circuits and logic side via optocouplers |
| Front Panel Interface | 2x male 24-pin Fujitsu FCN-365P024-AU connectors |
The IC693MDL655 utilizes fixed internal optocoupler configurations to transfer signal states safely to the logic bus without introducing propagation delays or compromising backplane bus communication velocity parameters. The 32-point high-density layout enables predictable I/O density scaling profiles across local, expansion, or remote 5-slot and 10-slot baseplates. The integrated firmware flash compatibility ensures synchronized processing blocks, allowing all four discrete groups to update within defined scan limits while driving front-panel status LEDs (A1-A8, B1-B8, C1-C8, D1-D8) without loop timing jitter.
Q: How is the physical wiring executed given the high density of the input channels?
A: The front panel lacks standard screw terminals. Connections are routed through two pre-mounted male 24-pin Fujitsu FCN-365P024-AU connectors, requiring the use of matching pre-wired cables such as the IC693CBL327 or IC693CBL328.
Q: Can different electrical logic types be mixed across the four separate input groups?
A: Yes. Because the 32 channels are partitioned into four distinct isolated groups of eight points (Groups A, B, C, and D), each independent group can be wired for either positive logic (sink) or negative logic (source) independently.
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