The GE IC693MDL742, also cataloged as the IC693MDL742 Discrete Output Module, operates as a dedicated hardware component for solid-state switching of external direct current loads within Series 90-30 platforms.
| Parameter | Specification |
|---|---|
| Model | IC693MDL742 |
| Brand | GE Fanuc |
| Origin | Factory standard |
| Weight | 0.26 kg (0.56 lbs) |
| Dimensions | Single-slot chassis occupancy |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 130 mA at 5 VDC (backplane bus, all outputs active) |
| Channel Density | 16 output points |
| Output Grouping | 2 isolated groups (8 channels per group) |
| Nominal Output Voltage | 12 / 24 VDC |
| Output Signal Range | 12 to 24 VDC (+20%, -15%) |
| Current Rating per Point | 1.0 A maximum |
| Current Rating per Group | 4.0 A at 50 deg C / 3.0 A at 60 deg C |
| Maximum On-State Voltage Drop | 1.2 VDC |
| Maximum Off-State Leakage Current | 1 mA |
| Maximum Response Time (On / Off) | 2 ms |
| Field-to-Logic Isolation | 1500 VDC |
| Group-to-Group Isolation | 500 VDC |
| Relative Humidity | 5 to 95% (non-condensing) |
The module controls field actuation loads by linking 16 positive-logic discrete outputs to the central controller via the parallel backplane bus structure. To manage heat generation and maintain hardware stability during maximum I/O density scaling inside the rack, the electronic subsystem limits its logic current draw to 130 mA from the 5 VDC rail. Optical couplers establish a 1500 VDC isolation barrier between the logic components and the field circuits, while group-to-group isolation is rated at 500 VDC. This electrical separation blocks inductive switching noise and prevents field-side electrical spikes from interfering with backplane bus communication velocity or disturbing execution cycles.
Q: Does this module support dynamic hot-swapping or live replacement under power?
A: No. The Series 90-30 backplane architecture does not feature live-insertion capability. Main chassis power and external field loop power must be fully isolated before extraction or insertion of the module to prevent backplane component damage.
Q: How does ambient temperature affect the maximum current handling capacity of the output groups?
A: The current rating undergoes thermal derating based on internal heat sink dissipation profiles. Each group of eight outputs handles up to 4.0 A at an operating temperature up to 50 deg C, which drops to a maximum of 3.0 A per group when operating temperatures reach 60 deg C.
Q: Can different external voltages be sourced for the two separate output groups?
A: Yes. Because the module splits the 16 outputs into two isolated groups with 500 VDC group-to-group isolation, each group has its own separate electrical path and can use distinct DC power supplies within the 12 to 24 VDC range.
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