Core Technical Specifications
This expansion board adds critical I/O and memory capabilities to your GE automation system. We engineered the A20B-1001-0731/02A to deliver reliable performance for system upgrades and expansions.
| Parameter | Specification |
|---|---|
| Product Type | Expansion Board / I/O Expansion Card |
| Dimensions | 220 mm x 160 mm x 20 mm (L x W x H) |
| Weight | 0.25 kg |
| Supply Voltage | 5 V DC (from backplane) |
| Power Consumption | 3 W typical |
| Bus Interface | 96-pin DIN 41612 connector |
| Memory Capacity | 64 KB EPROM (program storage) |
| Data Buffer | 512 bytes RAM (temporary storage) |
| Digital Inputs | 8 channels (24 V DC, optically isolated) |
| Digital Outputs | 8 channels (24 V DC, 0.5 A per channel) |
| Input Current | 5 mA typical per channel |
| Output Protection | Short-circuit and over-temperature protection |
| Isolation | 1,000 V AC (field-to-logic) |
| Operating Temp. | 0 °C to 60 °C |
| Storage Temp. | -20 °C to +70 °C |
| Certifications | CE and UL recognized |
Integrated I/O Expansion
The A20B-1001-0731/02A provides 8 isolated digital inputs and 8 digital outputs on a single board. These channels connect directly to field devices like pushbuttons, sensors, relays, and indicator lamps. The 0.5 A per channel output current drives small actuators without external amplification. This integrated I/O reduces the need for separate I/O modules in smaller applications.
Memory and Storage Resources
This expansion board includes 64 KB of EPROM for storing application programs and configuration data. The 512 bytes of RAM handle temporary data buffering during normal operation. This memory architecture supports standalone operation or coordinated control with the main processor. Consequently, the A20B-1001-0731/02A functions effectively as both an I/O and memory expansion.
Robust Output Protection
The A20B-1001-0731/02A integrates short-circuit protection on every output channel. Over-temperature protection automatically shuts down any channel that exceeds safe limits. After the fault clears, the output resumes normal operation without manual intervention. This protection prevents damage to the board and connected field devices during fault conditions.
Superior Isolation and Noise Immunity
This expansion board provides 1,000 V AC isolation between field I/O and the backplane logic. This high isolation protects sensitive processor circuits from ground faults and electrical surges. The design also eliminates noise coupling from field wiring, ensuring stable system performance. This robust isolation makes the A20B-1001-0731/02A suitable for electrically harsh environments.
Compact and Serviceable Design
The A20B-1001-0731/02A fits standard GE rack systems with its compact 220 x 160 mm form factor. The 0.25 kg weight ensures secure seating without stressing connectors or backplanes. You can install or replace this board quickly during system maintenance. The durable PCB construction resists vibration and humidity for reliable long-term operation.
Details
| Weight | 0.25 kg |
|---|---|
| Dimensions | 220 × 160 × 20 mm |
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