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IC693MDL645
IC693MDL645
IC693MDL645

GE Fanuc IC693MDL645 Series 90-30 24VDC 16-Point Pos/Neg Logic Input Module

  • Model: IC693MDL645
  • Brand: GE Fanuc
  • Series: Series 90-30
  • Core Function: Converts 24 V DC field discrete signals from limit switches, pushbuttons, and proximity sensors into internal logic signals for the PLC CPU.
  • Product Type: Discrete Input Module
  • Key Specs: 16 Input Points | 24 V DC (Positive/Negative Logic compatible) | 2 Isolated Groups (8 points per group)
  • Condition: New Original / New Surplus
  • Inventory Status: Legacy OEM item requiring strategic stocking; maintained in active buffer inventory to prevent unplanned machine stops and eliminate expensive PLC control panel retrofits.
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Description

Key Technical Specifications

Parameter Value
Manufacturer GE Fanuc
Part Number IC693MDL645
Series Series 90-30
Module Type Discrete Input Module
Input Channels 16 Points
Voltage Category 24 V DC (Positive or Negative Logic / Sink or Source)
Operating Voltage Range 0 to 30 V DC
Input Current 7 mA per point at 24 V DC
On-State Voltage 11.5 to 30 V DC
Off-State Voltage 0 to 5 V DC
Response Time 7 ms typical (On/Off delay)
Isolation Groups 2 groups of 8 points each (Group A: A1–A8, Group B: B1–B8)
Backplane Power Draw 80 mA at 5 V DC

 

Product Introduction & Supply Chain Strategy

The GE Fanuc IC693MDL645 is a 16-point 24 V DC discrete input module designed for Series 90-30 PLCs. Supporting both positive (sourcing) and negative (sinking) logic, it provides versatile connectivity for field control devices such as selector switches, photo-eyes, pressure switches, and auxiliary relay contacts.

Securing the IC693MDL645 as New Surplus is a high-value supply chain strategy for facilities maintaining established Series 90-30 racks. Purchasing uninstalled, factory-fresh original inventory eliminates the elevated risk of optocoupler degradation, dry solder joints, and terminal block wear inherent in second-hand components, preserving production uptime without requiring system-wide control upgrades.

 

Installation & Configuration Guide

Stage 1: Pre-Installation (Prep & Safety)

  1. Execute Lock-Out/Tag-Out (LOTO) procedures on all main rack power sources and external 24 V DC field signal power supplies.
  2. Put on an anti-static grounded wrist strap to protect internal optocouplers and CMOS components from ESD damage.
  3. Verify that field signal voltage matches the 24 V DC rating of the IC693MDL645 prior to wiring.

Stage 2: Removal

  1. De-energize the baseplate rack power supply.
  2. Open the front door flap, loosen the terminal block retaining screws, and swing the hinged 20-terminal connector block away from the module.
  3. Squeeze the module release levers at the top and bottom of the card and pull it straight forward out of the baseplate slot.

Stage 3: Installation (Seat & Wire)

  1. Align the rear card edge of the replacement IC693MDL645 with the guide rails of any available I/O slot in a Series 90-30 baseplate.
  2. Press firmly on the top and bottom face of the module until the retaining latches click locked.
  3. Attach the wired 20-terminal block to the front of the new module and tighten the top/bottom securing screws.

Stage 4: Power-On & Testing

  1. Reapply main power to the PLC rack and field I/O circuit.
  2. Check that the “MODULE OK” status LED illuminates solid green.
  3. Actuate connected field sensors and observe the corresponding front panel LED indicators (A1–A8 and B1–B8) to verify input signal processing.
IC693MDL645

IC693MDL645

IC693MDL645

IC693MDL645

Firmware/Software Versions & Upgrade Notes

  • Software Configuration: Configured using Proficy Machine Edition (PME), VersaPro, or Logicmaster 90. Simply allocate 16 bits in the %I discrete memory table for the slot position.
  • Logic Selection: Positive/Negative logic is determined by external wiring to the common terminals (A9/A10 for Group A, B9/B10 for Group B)—no DIP switches or jumper settings are required on the board.
  • Slot Compatibility: Can be installed in any available I/O slot of an IC693 Main, Expansion, or Remote baseplate.

 

Frequently Asked Questions (FAQ)

Is this IC693MDL645 input module brand new or pulled from a used rack?

This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability.

What is the primary operational benefit of buying New Surplus for discrete I/O modules?

Discrete input modules rely on optical isolators to shield PLC backplanes from high-voltage field surges. Used or refurbished cards frequently suffer from optical LED output decay over time, causing intermittent signal loss. Buying New Surplus ensures 100% component life and reliable input detection.

What quality control steps are completed prior to shipment?

Every undergoes a comprehensive QC sequence, including serial number tracking, physical backplane connector inspection, terminal screw torque verification, and live test rack power-on and channel actuation checks.

What is the difference between positive logic and negative logic on this module?

In positive logic (sourcing input), the field contact supplies 24 V DC (+) to the input point, and the common terminal is connected to 0 V DC (-). In negative logic (sinking input), the field contact connects the input point to 0 V DC (-), and the common terminal is connected to +24 V DC.

Do I need to remove field wiring when replacing an existing ?

No. The module uses a removable 20-terminal block. You can disconnect the entire wired terminal assembly from the old module and snap it directly onto the replacement unit without removing individual field wires.

What warranty is included with this New Surplus input card?

This module includes a full 1-year functional warranty. If any operational defect or hardware failure occurs during normal use within 12 months, we will immediately supply a replacement unit from our active buffer inventory.

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