Description
Product Introduction
The GE Fanuc IC693MDL741 is a 16-point 12/24 Volt DC Positive Logic (Sourcing) Discrete Output Module engineered for GE Series 90-30 PLC systems. Occupying a single option slot on any CPU, expansion, or remote baseplate, it translates internal CPU logic states into 16 independent solid-state DC switching outputs for controlling field loads such as solenoid valves, indicator lamps, intermediate relays, and motor starter coils.
Organized into two isolated groups of 8 points with independent common power connections per group, the IC693MDL741 delivers up to 0.5 Amps per point. Its optical isolation shields sensitive rack electronics from field electrical noise, while the hinged front door houses a 16-LED status grid for point-by-point visual troubleshooting.
Key Technical Specifications
| Parameter | Specification |
| Full Part Number | IC693MDL741 (Covers all revision levels) |
| Module Type | Discrete 12/24VDC Output (Positive Logic / Sourcing) |
| Number of Points | 16 Points (2 isolated groups of 8 points) |
| Operating Voltage Range | 12 to 30 VDC (+12/24 VDC nominal) |
| Output Current Rating | 0.5 A maximum per point (4.0 A maximum total per group / 8.0 A max per module) |
| Output Type | Solid-state sourcing transistors |
| Response Time | 2 ms maximum ON delay / 2 ms maximum OFF delay |
| Inrush Current | 2 A maximum for 10 ms |
| Backplane Current Draw | 110 mA at 5 VDC (from Series 90-30 baseplate power supply) |
| Isolation | 1500V RMS between field side and backplane; 500V RMS between groups |
| Terminal Block | 20-terminal removable terminal connector block |
Application Scenarios & The “Trench” Experience
At 3:10 AM during a heavy sorting cycle at an automated distribution center, a 4-lane diverter array stopped responding. The CPU commanded the diverter gates to open, but measuring voltage at the card’s output terminals read 0 VDC—an unsuppressed voltage inductive spike from an aging pneumatic solenoid coil had fried the sourcing transistors on Group A. With packages backing up on the main induction belt, the sorting line was completely stalled, costing the facility thousands of dollars per hour in delayed shipments.
Application Scenarios
- High-Density Solenoid Control: Controls up to 16 pneumatic/hydraulic directional control valves or fluid manifolds from a single slot.
- Control Relay & Contactor Drives: Actuates intermediate pilot relays, NEMA/IEC motor starter coils, and system interlock circuits.
- Stack Lights & Panel Indicators: Drives local status indicators, stack lights, and audible annunciator horns across manufacturing cells.
- VFD & Motion Command Signals: Sends high-speed 24V discrete run, stop, enable, and direction commands to Variable Frequency Drives and servo amplifiers.
Field Case Study
An automotive stamping vendor in Michigan suffered a sudden line halt when an internal wiring short destroyed multiple channels on their legacy IC693MDL741 module, stranding a high-speed blanking press. We dispatched a bench-tested, pre-cleared surplus IC693MDL741 card via local hot-shot courier. The site technician powered down the rack, swung the wired 20-pin terminal block onto the new card without removing a single field wire, slid the module into option slot 4, and had the blanking line back in full production within 15 minutes of delivery.
IC693MDL741
IC693MDL741
IC693MDL741
Transparency SOP: Quality Assurance & Testing
We test every IC693MDL741 unit under live physical load on active GE test racks before adding it to our ready-to-ship inventory.
- Inbound Visual Verification: Inspection for casing cracks, bent card-edge backplane pins, intact terminal block retention latches, and OEM tag authenticity.
- Backplane Power-On Check: Slotted into an active GE Series 90-30 rack (IC693CHS392 driven by an IC693PWR330 supply) to confirm power-up and backplane communication.
- 16-Point Full Load Switching Test: Applied 24VDC field power to both groups and connected a 0.5A inductive load across all 16 channels individually and simultaneously to confirm clean transistor switching, minimal voltage drop, and LED activations.
- Thermal Soak & Stress Test: Executed continuous high-frequency output cycling under full 4A per group current load for 4 hours inside a thermal test chamber to ensure zero transistor thermal breakdown.
- ESD Sealing & Final QC: Cleaned, terminals verified, and sealed inside heavy-duty ESD shielding with custom impact-resistant protective foam packaging.
The Veteran’s Tech Trap Guide
- ⚠️ Utilize the Removable Terminal Block: You do not need to unscrew field wiring when replacing a failed ! The module features a 20-terminal removable connector block. Simply loosen the top/bottom retaining screws, pop off the wired terminal block, swap the card, and snap the block onto the replacement unit.
- ❗ Never Hot-Swap on the Baseplate: The GE Series 90-30 backplane is not hot-swappable! Inserting or pulling the while the rack power supply is energized can arc backplane pins, ruin internal backplane transceivers, or trigger an immediate CPU hardware fault. Always kill main rack power first.
- ⚠️ Always Install Flyback Diodes on Inductive Loads: When driving inductive loads (solenoid coils, relay coils, magnetic brakes), always place a reverse-biased flyback diode (such as a 1N4004) directly across the coil terminals. Inductive back-EMF spikes can exceed transistor breakdown voltages and permanently ruin individual output channels.
- ❗ Verify Dual Group Power Commons: The 16 points are divided into two distinct groups of 8 (Points 1–8 use Terminal 1 for +DC power, Points 9–16 use Terminal 11 for +DC power). Both groups require an external +12/24VDC power connection to function. If points 9–16 are dead while 1–8 are working, check the power feed on Terminal 11.
Frequently Asked Questions (FAQ for Conversion)
Q: Is the GE Fanuc hot-swappable?
A: No. You must turn off main power to the Series 90-30 baseplate before removing or installing the module to prevent backplane or electronic damage.
Q: What is the main difference between the IC693MDL732 and ?
A: The IC693MDL732 is an 8-point 12/24VDC sourcing output module, whereas the is a 16-point 12/24VDC sourcing output module offering double the density in a single slot.
Q: Is the a sinking or sourcing output module?
A: The is a positive logic (sourcing) module. It switches the positive voltage (+12/24VDC) from the external power supply to the load terminal.
Q: Do I need to re-program the PLC when replacing an ?
A: No. As long as the replacement unit matches the model number and is installed in the same option slot, no software reconfiguration or ladder logic editing is required.
Q: What warranty coverage comes with this surplus output card?
A: Every module comes backed by a full 12-month replacement warranty. All units are authentic GE Fanuc surplus equipment, thoroughly inspected, cleaned, and bench-tested under live 24VDC loads prior to shipping.
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