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📣Overview
✔The GE Fanuc IC693MDL645 is a 24 V DC positive/negative logic discrete input module designed for the GE Fanuc Series 90-30 Programmable Logic Controller (PLC). It provides 16 input points arranged in one group with a single common terminal, and accepts either positive-logic or negative-logic field wiring. When current flows into an input point, the corresponding bit reads as logic 1 in the PLC input status table (%I). The module works with common field devices such as pushbuttons, limit switches and electronic proximity switches, making it a standard choice for digital signal acquisition in industrial control cabinets.
🔷Product Identification
- Part Number: IC693MDL645
- Manufacturer: GE Fanuc
- Platform: Series 90-30 PLC
- Module Type: 24 V DC Positive/Negative Logic Discrete Input
- Input Points: 16, one group with a single common
🔷Technical Specifications
- Rated Voltage: 24 V DC
- Input Voltage Range: 0 to +30 V DC
- Inputs per Module: 16 (one group, single common)
- Isolation: 1500 V between field side and logic side
- Input Current: 7 mA typical at rated voltage
- On-state Voltage: 11.5 to 30 V DC
- Off-state Voltage: 0 to +5 V DC
- On-state Current: 3.2 mA minimum
- Off-state Current: 1.1 mA maximum
- On Response Time: 7 ms typical
- Off Response Time: 7 ms typical
- Power Consumption: 5 V bus 80 mA (all inputs on); 24 V 125 mA from isolated 24 V backplane bus or user supply
- Status Indication: 16 green LEDs (A1–A8 for points 1–8, B1–B8 for points 9–16)
- Mounting: Any I/O slot of a 5- or 10-slot Series 90-30 baseplate
🔷Key Features
- 16 digital input points in one group with one common terminal
- Supports both positive-logic and negative-logic wiring schemes
- 1500 V isolation between field wiring and PLC logic side
- Fast 7 ms typical on/off response for switch and sensor signals
- Individual green LED status indicators for every input point
- Field devices may be powered by a user supply or the isolated +24 VDC supply available on the PLC power supply terminals
🔷Application Fields
- Machine tool and production line control signal acquisition
- Packaging, material handling and conveyor interlock feedback
- Pump, compressor and fan status monitoring in process skids
- Assembly line pushbutton, limit switch and proximity switch inputs
- Retrofit and spare-part support for existing Series 90-30 PLC installations
🔷Installation and Wiring Notes
- Mount the module in any available I/O slot of a 5- or 10-slot Series 90-30 baseplate
- Wire field devices to the assigned terminals according to positive-logic or negative-logic convention, using the single common terminal for the group
- Confirm the field supply stays within the 0 to +30 V DC input range; signals above 11.5 V DC read as on, below 5 V DC read as off
- Use shielded or twisted field wiring where electromagnetic interference is present
- Verify each point against its green LED and the PLC %I status table during commissioning
🔷FAQ
Q: What is the GE Fanuc IC693MDL645? A: It is a 16-point, 24 V DC positive/negative logic discrete input module for the Series 90-30 PLC, converting field switch and sensor states into logic 1/0 values in the %I input table.
Q: How many input points does the module have? A: 16 points, grouped in one block with a single common terminal.
Q: What isolation does the IC693MDL645 provide? A: 1500 V isolation between the field side and the PLC logic side.
Q: Is the IC693MDL645 an output module? A: No. It is a discrete input module; Series 90-30 relay or transistor output modules carry separate catalog numbers.
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