Overview
Configured for 24 VDC discrete signal acquisition in the GE Series 90-30 PLC, the GE Fanuc IC693MDL645 (IC693MDL645 discrete input module) provides 16 input points with positive/negative logic operation and LED status indication. The module accepts 0 to +30 VDC field signals and provides 1500 V isolation between the field side and logic side.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC693MDL645 |
| Brand | GE Fanuc / General Electric |
| Series | Series 90-30 |
| Module Type | 16-Point Discrete Input Module |
| Origin | USA |
| Weight | 0.3 kg |
| Dimensions | 3.6 x 13 x 13.5 cm estimated shipping size |
| Rated Voltage | 24 VDC |
| Input Voltage Range | 0 to +30 VDC |
| Inputs per Module | 16 |
| Input Current | 7 mA |
| On-State Voltage | 11.5 to 30 VDC |
| Off-State Voltage | 0 to +5 VDC |
| On-State Current | 3.2 mA minimum |
| Off-State Current | 1.1 mA maximum |
| On Response Time | 7 ms typical |
| Isolation | 1500 V between field side and logic side |
| Logic | Positive/Negative Logic |
| Status Indication | LED Indicators |
| Tariff Code | 8537101190 |
| Place of Shipment | Xiamen, China |
PLC Discrete Input Signal Characteristics
The IC693MDL645 monitors 16 discrete field inputs through 24 VDC signal circuits. Each input accepts a voltage from 0 to +30 VDC. The module recognizes 11.5 to 30 VDC as the specified on-state range and 0 to +5 VDC as the specified off-state range.
The input circuit requires at least 3.2 mA for the specified on-state condition and allows a maximum off-state current of 1.1 mA. In addition, the module provides 1500 V isolation between the field side and the logic side. The typical on response time is 7 ms.
For status checking, integrated LED indicators provide a local indication of input conditions.
Frequently Asked Questions
Q: How many discrete input points does the IC693MDL645 provide?
A: The module provides 16 discrete input points.
Q: What field voltage does the IC693MDL645 accept?
A: The specified input range is 0 to +30 VDC. The on-state range is 11.5 to 30 VDC, while the off-state range is 0 to +5 VDC.
Q: What electrical isolation does the module provide?
A: The module provides 1500 V isolation between the field side and the logic side.
Field Installation Guidelines
Install the IC693MDL645 in the designated Series 90-30 rack position and secure the module according to the rack assembly procedure. Before wiring, remove field power and verify the circuit voltage.
Route discrete input wiring separately from high-current conductors and sources of significant electrical noise. Maintain consistent signal polarity and verify each field device against the module input requirements.
Use appropriate terminal connections and inspect conductors for secure mechanical contact. Where shielded wiring is used, apply the site grounding scheme consistently and avoid creating unintended ground loops.
Before energizing the rack, check the input wiring for shorts, incorrect polarity, and unintended connections between field and logic circuits. After power-up, verify the LED indications against the actual states of the connected field devices.
