Discrete Input Module 3300 | GE IC694MDL250 PACSystems RX3i
Manufacturer: GE Fanuc
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Part Number: IC694MDL250
Condition：New with Original Package
Product Type: Discrete Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE Emerson IC694MDL250 PACSystems RX3i Discrete Input Module
The GE Emerson IC694MDL250, also cataloged as the IC694MDL250 Discrete Input Module, operates as a dedicated hardware component for 120 VAC discrete signal detection within PACSystems RX3i networks. The module monitors sixteen individually isolated AC channels, evaluating state transitions across independent AC voltage sources. Internal optical isolation stages process alternating current signals from field switches, sensors, and contactors, passing real-world logic states directly to the backplane bus while suppressing electrical noise via onboard RC snubber networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC694MDL250 |
| Brand | GE Emerson / GE Fanuc |
| Origin | United States |
| Weight | 0.23 kg (0.50 lbs) |
| Dimensions | Standard RX3i single-slot module profile |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 60 mA typical @ 5 VDC backplane (220 mA max with all inputs ON) |
| Channel Count | 16 individually isolated discrete AC inputs |
| Nominal Input Voltage | 120 VAC (47 to 63 Hz) |
| Input Voltage Range | 0 to 132 VAC |
| On-State Voltage / Current | 70 to 132 VAC / 5 to 7 mA typical |
| Off-State Voltage / Current | 0 to 20 VAC / 2.5 mA maximum |
| Response Time | ON <= 30 ms, OFF <= 45 ms |
| Configurable Input Filter | 20 ms to 2540 ms (adjustable in 20 ms increments) |
| Channel-to-Channel Isolation | 250 VAC continuous; 1500 VAC for 1 minute |
Backplane Bus Communication Velocity and Density Scaling
The IC694MDL250 exchanges input data over the high-speed RX3i local backplane bus, transferring channel state tables directly to the central processing unit during standard controller scan sweeps. The system relies on CPU firmware version 3.50 or higher to manage backplane bus clock timing and execute hardware diagnostics, including detection of terminal block connectivity status. Individual optical isolation circuits scale I/O density across the 16 channels, allowing distinct AC voltage phases to connect to adjacent terminals without cross-talk or backplane logic corruption.
Frequently Asked Questions
Q: Can the IC694MDL250 module be inserted or removed while backplane power is applied?
A: No, the module does not support hot-swapping. Inserting or removing the card while the rack is energized can cause electrical damage to backplane connector pins and generate immediate system fault flags in the CPU controller logic.
Q: How are contact bounce and high-frequency AC line noise filtered on input channels?
A: Digital filter processing is configured through the CPU software environment. Filter times adjust from 20 ms to 2540 ms in 20 ms increments, enabling the module to suppress mechanical contact bounce and line transients before updating input image tables.
Q: Are terminal blocks included in the default module package?
A: No, terminal connectors are sold separately. The module requires a 36-pin terminal block assembly, such as the IC694TBB032, IC694TBB132 box-style blocks or IC694TBS032, IC694TBS132 spring-style blocks.
Field Installation Guidelines
Mount the IC694MDL250 into any available I/O slot of a PACSystems RX3i rack after removing all backplane and field circuit power. Wire field input conductors to the compatible IC694 terminal block using AWG #22 to #16 copper wire for double-conductor connections or AWG #14 for single-conductor installations.
Maintain separate cable trays for 120 VAC field wiring and low-voltage DC or analog signal lines, preserving a minimum clearance distance of 300 mm to reduce electromagnetic coupling. Verify that all field-side neutral and line connections match the individual channel isolation boundaries. Secure field wire shielding to the enclosure frame ground point to divert high-voltage transients away from sensitive backplane logic components.