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Configured for discrete negative-logic switching operations in GE Fanuc 90-30 PLC platforms, the GE Fanuc IC693MDL741 (IC693MDL741 Discrete output module) provides direct physical/electrical execution. The module acts as a current-sinking interface that directs energy from active field loads back to the negative DC power bus or system common. Operating with 16 output points across a single-slot architecture, it interfaces seamlessly with external solid-state or electromechanical control loops.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC693MDL741 |
| Brand | GE Fanuc Emerson |
| Origin | USA |
| Product Line | Series 90-30 |
| Type | Discrete Output Module (Negative Logic / Sinking) |
| Output Points | 16 (2 groups of 8 channels) |
| Nominal Output Voltage | 12 / 24 VDC |
| Output Voltage Range | 12 to 24 VDC (+20%, -15%) |
| Output Current Rating | 0.5 A maximum per point; 2.0 A maximum per common group |
| On/Off Response Time | 2 ms maximum |
| Peak Output Voltage Drop | 0.5 V maximum |
| Off-State Leakage Current | 1 mA maximum |
| Electrical Isolation | 1500 V between field and logic side; 500 V group-to-group |
| Power Consumption | 110 mA maximum at 5 VDC (all outputs active) |
| Overcurrent Protection | None (no internal fuses present) |
| Status Indicators | 16 green LEDs (channel status representation) |
| Operating Temp | 0 to 60 deg C |
| Weight | 1.00 lbs (0.45 kg) |
| Dimensions | Single-slot form factor for Series 90-30 baseplates |
Backplane Bus Communication Velocity & Control
The IC693MDL741 relies on deterministic 5 VDC backplane bus communication velocity and direct execution from the Series 90-30 CPU. Operating without internal channel microcontrollers, state execution registers instantly to the physical optical isolation barrier, enabling a maximum signal propagation lag of under 2 ms for both turn-on and turn-off phases. Backplane I/O density scaling allows integration into standard 5-slot or 10-slot baseplates. Users must ensure that firmware flash compatibility matches CPU backplane settings to prevent communications faults under active configurations.
Frequently Asked Questions
Q: Does the IC693MDL741 contain internal fuses to protect against field wiring shorts?
A: No. The IC693MDL741 module does not contain any internal fuses. External fuses must be wired in series with the field power supplies to prevent thermal damage to the internal trace paths during overcurrent or short-circuit conditions.
Q: Can the IC693MDL741 directly switch AC field loads?
A: No. The solid-state output circuitry is designed exclusively for 12/24 VDC negative logic sinking operations. To control AC loads, an interposing relay must be installed between the module output point and the AC actuator.
Q: How is the logic side protected from high-voltage surges on the field side?
A: The module features built-in optocouplers providing up to 1500 V isolation between the field-side circuits and the 5 VDC backplane logic side, alongside 500 V electrical isolation between the two independent output groups.
Field Installation Guidelines
- Baseplate Installation: Slide the module into any available slot on a 5-slot or 10-slot Series 90-30 baseplate, ensuring the top and bottom chassis hooks seat completely before latching.
- Wiring Configurations: Connect loads between the positive DC supply rail and the specific output terminal. Ensure the negative terminal of the external power supply connects directly to the group common terminal.
- External Circuit Protection: Wire a fast-acting external fuse (recommended 2.0 A maximum per group common) inline with each common terminal to offset the lack of onboard fusing.
- Wire Routing: Separate low-voltage DC lines from high-voltage AC lines within the cabinet wireways to minimize electromagnetic coupling.
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