Description
GE Fanuc IC694MDL754 | RX3i 32-Point DC Output Module
Product Introduction
When a control panel needs a high-density bank of DC outputs, the GE Fanuc IC694MDL754 provides 32 sourcing points in a single RX3i I/O module. Its two isolated groups of 16 outputs allow separate field-power arrangements, while electronic short-circuit protection helps contain output faults without relying solely on upstream protection.
The IC694MDL754 supports 12/24 VDC nominal loads and delivers up to 0.75 A per point within its specified operating range. That makes it suitable for compatible DC control loads, provided the field supply, group loading, and thermal limits are respected. For maintenance teams replacing an installed module, the RX3i platform requirement is non-negotiable: this is not a Series 90-30-compatible substitute.
IC694MDL754
Key Technical Specifications
- Catalog Number: IC694MDL754
- Platform: GE Fanuc PACSystems RX3i
- Module Description: 12/24 VDC ESCP 0.75 A positive-logic output module
- Number of Outputs: 32 discrete output points
- Output Organization: Two isolated groups of 16 points
- Output Type: Positive logic / sourcing
- Rated Voltage: 12/24 VDC nominal
- Operating Voltage Range: 10.2–30 VDC
- Maximum Output Current: 0.75 A per point
- External Field Supply: +12 to +30 VDC; supplied by the user
- Backplane Power Consumption: 300 mA maximum from the 5 VDC bus
- Output Voltage Drop: 0.3 VDC maximum
- Output Leakage Current: 0.1 mA maximum
- Turn-On Response: 0.5 ms maximum
- Turn-Off Response: 0.5 ms maximum
- Inrush Capability: 3 A for 10 ms without ESCP trip
- Steady-State Overcurrent Trip: 5 A typical per point
- Protection Features: Short-circuit, overcurrent, and overtemperature protection with automatic recovery
- Field-to-Backplane Isolation: 250 VAC continuous; 1500 VAC for 1 minute
- Group-to-Group Isolation: 250 VAC continuous; 1500 VAC for 1 minute
- Thermal Derating: No derating at 24 VDC; at 30 VDC, output availability is derated above 42°C
- Compatible Terminal Blocks: IC694TBB032 box-style or IC694TBS032 spring-style
- CPU Requirement: Compatible RX3i CPU, Release 2.90 or later
Specifications are based on GE Fanuc RX3i system documentation. Actual output loading must account for ambient temperature, field supply voltage, and group-level limits.
Global Sourcing & Live-Test SOP
For a used or surplus IC694MDL754, visual condition alone does not establish output-channel health. A meaningful inspection should include the field-power connections, individual output response, and protection behavior.
Incoming Verification
- Confirm the IC694MDL754 catalog number and complete revision suffix.
- Inspect the housing, backplane connector, front terminal interface, and LED indicators.
- Check for heat discoloration, damaged terminals, corrosion, or evidence of field-side electrical damage.
- Confirm whether the terminal block is included or must be sourced separately.
Authenticity & Traceability
- Photograph the OEM label, catalog number, and revision markings.
- Record serial or date-code information where present.
- Compare module identification and physical details against available GE Fanuc documentation.
- Classify the unit accurately as new surplus, used, or refurbished.
Functional & Output Testing
- Install the module in a compatible RX3i test rack with an appropriate CPU and field supply.
- Verify module recognition and startup diagnostics.
- Command individual output points using a controlled test program.
- Confirm output switching with suitable loads or test instrumentation.
- Test representative channels across both isolated groups.
- Record the field supply voltage and observed output behavior.
- Where the test setup permits, verify fault indication and recovery under controlled conditions. Do not apply deliberate overloads without an approved test procedure.
Extended Run & Test Record
- Perform an extended powered run when test facilities permit.
- Record the actual duration, test conditions, and results.
- Document any channels or protection functions that were not tested.
- Do not claim a 24-hour heat run unless it was completed and recorded.
ESD-Safe Packaging
- Use ESD-protective packaging and cushioning suitable for industrial electronics.
- Protect the backplane connector and terminal interface against impact and contamination.
- Package any included terminal block separately to prevent damage during transit.
Field Engineer’s Pitfall Guide
- ❗ Do not install this module in a Series 90-30 CPU system. The is an RX3i module and requires a compatible RX3i CPU. Confirm the platform and CPU firmware before ordering; a matching voltage rating does not establish system compatibility.
- ❗ Sourcing outputs require the correct field wiring. The switches the positive side of the DC supply to the load. Verify polarity, group commons, and field-power wiring against the RX3i wiring diagram. It is not interchangeable with a sinking-output module.
- ❗ Respect group isolation and thermal limits. The two 16-point groups are isolated, but this does not mean every point can operate at 0.75 A under every ambient condition. Check the manufacturer’s loading and thermal-derating guidance, particularly when operating at 30 VDC or driving high-inrush loads.
Intent-Driven FAQ
Q1: What is the GE Fanuc used for?
It is a 32-point discrete DC sourcing output module for PACSystems RX3i PLC systems. It is used to switch compatible 12/24 VDC field loads.
Q2: Is the compatible with Series 90-30?
No. The is designed for PACSystems RX3i and requires a compatible RX3i CPU. Do not treat it as a direct Series 90-30 replacement.
Q3: What is the maximum current per output?
The rated maximum is 0.75 A per point. Actual usable loading depends on the field supply, output-group loading, and thermal conditions.
Q4: Does the include a terminal block?
The terminal block is a separate component unless explicitly included in the sale. Compatible options include the IC694TBB032 box-style and IC694TBS032 spring-style terminal blocks.
Q5: Does this module have electronic short-circuit protection?
Yes. The includes electronic short-circuit, overcurrent, and overtemperature protection with automatic recovery. Protection should not be treated as a substitute for correct field wiring and load sizing.
Q6: Can the be hot-swapped?
Do not assume live removal or insertion is permitted in your installed configuration. Follow the applicable RX3i hardware manual and site lockout procedures before replacing the module.
Q7: What should I verify before ordering a replacement?
Confirm the RX3i CPU and firmware compatibility, full module revision, terminal-block type, field voltage, output logic, and required channel loading. Request actual-unit photos, condition classification, functional-test scope, and written warranty terms from the supplier.
