The GE IC694MDL758, also cataloged as the IC694MDL758 Discrete Output Module, operates as a dedicated hardware component for solid-state switching of low-voltage direct current loads within PACSystems RX3i networks.
| Parameter | Specification |
|---|---|
| Model | IC694MDL758 |
| Brand | GE Fanuc / Emerson |
| Origin | Factory standard |
| Weight | 1.36 kg (3.00 lbs) |
| Dimensions | Single-slot chassis occupancy |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 250 mA maximum at 5.0 VDC (from backplane bus) |
| Channel Density | 32 discrete outputs |
| Output Grouping | 2 isolated groups (16 channels per group) |
| Output Logic Type | Positive logic (Sourcing) |
| Rated Operating Voltage | 12 / 24 VDC |
| Output Voltage Range | 10.2 to 28.8 VDC |
| Output Current per Point | 0.5 A maximum |
| Output Current per Group | 8.0 A maximum |
| Inrush Current Rating | 5.4 A for 10 ms (without an ESCP trip) |
| Maximum Response Time | 0.5 ms |
| Isolation | Galvanic group-to-group isolation |
| Status Indicators | 32 green channel LEDs, 2 fault LEDs, 1 module status LED |
| Compatible Terminal Blocks | IC694TBB032 (box-style) or IC694TBS032 (spring-style) |
| System Compatibility | PACSystems RX3i CPU slots only (Incompatible with Series 90-30) |
The module executes discrete automation routines by shifting 32 solid-state sourcing outputs across the local PACSystems RX3i parallel backplane. To maintain deterministic networks performance when scaling high-density electronic modules inside the chassis, the device draws a constant 250 mA from the 5.0 VDC backplane bus. Built-in electronic short-circuit protection (ESCP) monitors the physical circuit loops across each group common. If a localized short-circuit occurs, the ESCP infrastructure isolates the fault, bounds the internal thermal heat sink dissipation profile, and routes a digital diagnostic error frame directly to the master CPU without disrupting backplane bus communication velocity.
Q: Does this module support live insertion and extraction (hot-swapping) during controller operation?
A: Yes. The PACSystems RX3i system architecture permits hot-swap execution of this module, provided the technician complies with the grounding practices, backplane capacity limits, and mechanical extraction guidelines specified in the RX3i installation manual.
Q: How does the module handle a sudden loss of field-side supply voltage within an output group?
A: The hardware logic incorporates diagnostic sub-circuits that detect the loss of external field power for each of the two isolated groups. Upon detection, it toggles a dedicated fault LED indicator on the front panel and generates a structured fault report for transmission to the RX3i controller.
Q: Is this module backward compatible with older Series 90-30 PLC backplanes?
A: No. The firmware and electrical interface of the module are designed exclusively for the PACSystems RX3i platform. It cannot be mapped or installed within a Series 90-30 chassis.
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