The General Electric IC693ALG390 is a high-performance analog output module designed for the Series 90-30 Programmable Logic Controller (PLC) platform. This module provides two independent output channels capable of delivering a bipolar voltage range of -10 to +10 VDC. It is engineered for precision control applications, including closed-loop system management, signal transmission to instrumentation, and data logging requirements.
Features
- Two isolated analog output channels
- Bipolar output range: -10 to +10 VDC
- High-resolution output: 2.5 mV per count
- 1500 VDC isolation between field and logic sides
- Configurable output behavior: Hold-last-state or 0V default
- Fast update rate of 5 ms
Technical Specifications
| Model | IC693ALG390 |
| Output Channels | 2 |
| Voltage Range | -10 to +10 VDC |
| Resolution | 2.5 mV |
| Absolute Accuracy | +/- 5 mV at 25 degC |
| Update Rate | 5 ms |
| External Supply Voltage | 18 to 30 VDC (24 VDC nominal) |
| Isolation | 1500 VDC (Field to Logic) |
| Output Load Capacitance | 2000 pF maximum |
Applications
This module is suitable for industrial automation tasks requiring precise voltage-based control signals. Typical use cases include proportional valve control, variable speed drive references, and feeding signals to external recorders or process monitoring equipment within the GE 90-30 PLC architecture.
Installation Guidelines
- Ensure the PLC rack is powered down before inserting or removing the module to prevent electrical damage.
- The module utilizes screw-type terminals; ensure wires are properly stripped and secured to prevent intermittent connections.
- Maintain proper grounding practices to minimize EMI impact on sensitive analog signals.
- Use shielded twisted-pair cabling for field wiring to reduce noise interference.
- Verify that the external 24 VDC supply is within the 18-30 VDC range and is isolated to maintain the integrity of the module's 1500V isolation rating.
- Ensure adequate ventilation in the cabinet to maintain operating temperatures within the specified range of 0 to 60 degC.
FAQ
What is the primary function of the IC693ALG390?
The IC693ALG390 is an analog output module for GE 90-30 PLCs, providing two channels of -10 to +10 VDC output signals for control and monitoring.
Can this module output 4-20mA signals?
No, the IC693ALG390 is strictly a voltage output module. For current loop applications, alternative modules such as the IC693ALG391 or IC693ALG392 should be considered.
How does the module handle power loss?
The module supports an external 24 VDC supply, allowing the outputs to maintain their last state during a backplane power interruption, provided the system configuration supports this feature.
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