General Electric IC693MDL752 Negative Logic Output Module

The GE IC693MDL752 is an 8-point DC Relay Output Module designed for use with the GE Fanuc Series 90-30 Programmable Logic Controller (PLC) system. It features relay contact outputs that allow for control of AC or DC field devices such as solenoids, contactors, and indicators. This module supports negative logic switching configurations, meaning it can be wired to provide a return path (sink) for the current.

Unlike traditional solid-state outputs, the relay outputs of the MDL752 offer high versatility and electrical isolation, making them suitable for applications that require switching of different voltage levels or AC/DC signals on a single module. It is particularly useful where galvanic isolation between the PLC logic and field devices is essential.

Product Specifications

Product Applications

• Process Control Panels: Activates AC or DC solenoids, alarms, and pilot lights with safe isolation.

• Machine Automation: Ideal for switching loads such as motor starters, clutch controls, or contactors.

• Energy and Utilities: Supports interfacing with legacy systems operating on mixed AC/DC signals.

• Building Automation: Provides control over HVAC relays, lighting relays, and security systems.

• Transportation Systems: Manages signaling and interlock devices in rail and conveyor systems.

• Industrial I/O Isolation: Electrically isolates low-voltage PLC logic from high-voltage devices.

Product Advantages

• Versatile Relay Outputs: Supports both AC and DC loads with high switching capacity.

• Negative Logic Control: Well-suited for systems requiring current sinking configuration.

• High Isolation: 1500 V dielectric strength ensures strong protection between field and logic.

• Channel Independence: Each relay channel is isolated from the others—ideal for mixed voltage applications.

• Mechanical Relay Reliability: Long operational life for industrial switching use-cases.

• LED Status Feedback: Instant visual diagnostics with individual LEDs per output.

• Minimal Crosstalk: Mechanical isolation prevents electrical interference between outputs.

• Plug-and-Play for 90-30 Systems: Fully compatible with GE 90-30 CPUs and baseplates.

Frequently Asked Questions (FAQ)

1. Q: What type of outputs does the IC693MDL752 provide?

   A: It uses mechanical relay contacts capable of switching both AC and DC loads.

2. Q: What is the maximum load each relay can handle?

   A: Each channel supports 2.0 A, and the total module should not exceed 4.0 A.

3. Q: What does “negative logic” mean in this context?

   A: It means the module uses sinking logic, where current flows from the load into the module.

4. Q: Can this module switch 250V AC loads directly?

   A: Yes, it is rated up to 250 VAC per channel, within current limits.

5. Q: Are the relay outputs isolated from one another?

   A: Yes, each output is electrically isolated, allowing control of different voltage sources.

6. Q: Can I use inductive loads like relays or solenoids with this module?

   A: Yes, but it is recommended to use flyback diodes or suppressors for protection.

7. Q: Is the module hot-swappable?

   A: No, always power down the system before inserting or removing the module.

8. Q: Does this module require an external power supply?

   A: No separate power supply is required—power is drawn from the PLC baseplate.

9. Q: How are output statuses indicated?

   A: Each output has a dedicated LED for visual status monitoring.

10. Q: Is the module suitable for safety-critical applications?

    A: It can be used in non-safety circuits, but for SIL-rated systems, use certified safety modules.