Emerson IC694MDL645E RX3i 16-Point DC Input Module
A 24 VDC positive/negative logic input module with the exact E hardware revision retained.
Product Profile
IC694MDL645E is the E hardware revision of the IC694MDL645 PACSystems RX3i discrete input module. The base module provides sixteen 24 VDC input points and supports positive- or negative-logic field wiring.
The E suffix, point mapping, field polarity, common wiring and rack position must all remain linked. Similar IC694 input modules can have different density, filtering or diagnostics and should not be selected by faceplate appearance.
Technical Data
| Manufacturer | Emerson / GE Fanuc |
|---|---|
| Exact Model | IC694MDL645E |
| Product Family | PACSystems RX3i |
| Product Type | DC voltage input module |
| Hardware Revision | E |
| Input Count | 16 points |
| Logic Type | Positive or negative logic |
| Input Response | 7 ms on; 7 ms off |
| Nominal Field Voltage | 24 VDC |
| Field Voltage Range | 20 to 30 VDC |
| On-State Threshold | Greater than 11.5 VDC |
| Backplane Current | 80 mA at 5 VDC and 125 mA at 24 VDC |
| Ordinary-Location Standard | UL 508; equivalent to CSA C22.2 No. 142-M1987 |
| Hazardous-Location Rating | Class I, Division 2, Groups A, B, C and D |
| Mounting Format | Panel / DIN-rail system format as specified for the RX3i I/O platform |
System Role
Sixteen 24 VDC points for positive- or negative-logic inputs.
Seven-millisecond nominal on and off response.
E revision retained for asset and purchasing traceability.
Industrial approvals documented at the base-module level.
Compatibility
- Export the controller hardware project and record the slot and point-address mapping.
- Photograph the E label, terminal wiring, commons, field supply and input-device polarity.
- Check the 20–30 VDC field source under load and isolate safety-related circuits before removal.
- After exchange, stimulate every point and record controller state, HMI indication, alarms and restored interlocks.
Applications
- Machine status, permissive and interlock inputs in a 24 VDC RX3i system.
- Limit switches, proximity sensors and dry contacts using the engineered logic polarity.
- Like-for-like replacement of an installed IC694MDL645E.
FAQ
Why can an IC694MDL645E point remain off even when 24 VDC is measured nearby?
The field common, polarity, terminal path and actual voltage at the input terminal under load must be checked; an open common can affect several points.
What distinguishes IC694MDL645E from a similar sixteen-point module?
Confirm the complete E label, 24 VDC positive/negative-logic function, response data and controller hardware catalog entry.
What should be supplied for an IC694MDL645E quotation?
Provide label photos, rack and slot, terminal assembly, controller project, field-supply details and the failed-point pattern.
How should a shared failure across IC694MDL645E inputs be diagnosed?
Check the field supply, common conductors, terminal seating and rack power before treating multiple channels as independent failures.
What is the preferred IC694MDL645E acceptance record?
Record a controlled stimulus for all sixteen points, input voltage, PLC state, HMI/alarm result and restoration of each isolated interlock.
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