Description
Key Technical Specifications
- Inputs: 32 points
- Voltage: 24 VDC nominal
- Input Voltage Range: 0 to +30 VDC
- Input Current: 7.0 mA typical per point
- Logic: Positive or negative (selectable)
- Isolation: 1500 VAC for 1 minute
- On-State Voltage: 15-30 VDC
- Off-State Voltage: 0-5 VDC
- Response Time: 2 ms on, 2 ms off typical
- Power Consumption: 170 mA at 5 VDC from backplane
Product Introduction
The GE IC693MDL655 is a 32-point 24VDC input module for the Series 90-30 PLC. It accepts positive or negative logic signals from field devices such as limit switches, pushbuttons, and proximity sensors.
This module provides high-density input monitoring in a single slot and is widely used for machine control and process applications that require reliable 24VDC discrete inputs.
- IC693MDL655
- IC693MDL655
- IC693MDL655
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No inputs registering | Field power missing | ✅ High | Measure 24VDC at input common terminals | Verify field power supply |
| False inputs | Wiring short or noise | ✅ High | Disconnect field wires and test | Check wiring insulation |
| Module LED not lighting | Backplane or module fault | ✅ Medium | Swap with known good module | Replace IC693MDL655 |
| Intermittent readings | Loose terminal connections | ✅ Medium | Inspect screw terminals | Tighten connections to spec |
| All inputs stuck on/off | Common terminal issue | ✅ Medium | Check common wiring | Verify common is properly connected |
Always use proper grounding and shielding on input wiring for noisy environments.
Frequently Asked Questions (FAQ)
Is the IC693MDL655 new original stock? Yes. Supplied as New Original / New Surplus with full testing.
Does this module support sinking or sourcing inputs? It supports both positive and negative logic inputs depending on how you wire the common terminal.
What is the input voltage range? 0 to +30 VDC, with reliable detection from 15-30 VDC for the on state.
How many points per common? Typically grouped in sets of 16 or 32 depending on wiring configuration. Refer to the module datasheet for exact terminal layout.
Can I mix AC and DC modules in the same rack? Yes, but keep AC and DC wiring separated to reduce noise.
Is this module hot-swappable? No. Remove power to the PLC rack before inserting or removing modules.
What warranty do you offer? 1-year warranty on functional operation. Test reports available upon request. Verify your backplane slot and power budget before installation.




WhatsApp: +86 16626708626
Email:
Phone: +86 16626708626