Description
Overview
The GE ST-1218 is an 8-channel discrete input module from the RSTi PACSystems series by GE Fanuc Emerson. Designed for high-speed digital input acquisition, this module supports 12/24 VDC field devices and ensures reliable ON/OFF signal detection in distributed control and automation systems.
Technical Specifications
| Attribute | Specification |
|---|---|
| Model | ST-1218 |
| Module Type | Discrete Input (Digital) |
| Number of Channels | 8 Positive Logic Inputs |
| Input Voltage | 12–24 VDC |
| Operating Voltage Range | 11–28.8 VDC |
| On Voltage Threshold | >10.2 VDC |
| Off Voltage Threshold | <5 VDC |
| Response Time | 3.0 ms |
| Nominal Supply | 24 VDC |
| Current Consumption | 35 mA @ 5 VDC |
| Mounting | Rack-mounted |
| Dimensions | 13.3 × 7.08 × 3.93 cm |
| Weight | 0.24 lbs |
Key Features
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8-channel discrete input acquisition for compact RSTi PACSystems applications.
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Positive logic design ensures accurate ON/OFF detection.
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Fast 3 ms response for real-time control processes.
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Flexible operating voltage (11–28.8 VDC) compatible with a variety of field devices.
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Industrial-grade construction and certifications for reliable operation.
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Compact form factor simplifies panel installation.
Applications
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Digital signal acquisition from switches, pushbuttons, and sensors.
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Distributed control systems and PACSystems I/O racks.
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Suitable for process automation, factory control, and monitoring systems.
FAQ
Q: Can the ST-1218 handle analog signals?
A: No, it is strictly for digital input acquisition (ON/OFF signals).
Q: What is the maximum input voltage it can tolerate?
A: The operating voltage range is 11–28.8 VDC; ensure field devices remain within this range.
Q: How does it compare to similar RSTi discrete input modules?
A: Compared to other RSTi input modules, the ST-1218 offers 8 channels with fast 3 ms response, ideal for applications requiring compact high-speed digital input acquisition.
Features
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