Description
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BrandGE
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ModelIS220PDIAH1B
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Product NameDiscrete Input I/O Pack
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Place of OriginUnited States
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HS Code8537101190
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Dimensions226 mm × 107 mm × 30 mm
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Weight0.36 kg
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Operating Temperature-30 °C to +65 °C
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Storage Temperature-40 °C to +70 °C
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Power Supply18–32 VDC
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Warranty12 month
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Product StatusNew brand
Backed by abundant in-stock inventory and nearly 20 years of industry experience, our company stands as a leading player in the industrial control sector.We offer an extensive range of industrial control products covering numerous models. Should you have any other requirements, please feel free to contact us, and we will respond to you promptly.
Our main brand:
1.ABB's module cards, touch screens, controllers, etc., such as PP846 touch screen, IGCT starting with 5SHY, PM starting controller, AI, DO starting input/output module, SP starting Bailey module, etc
2.GE's module card CPUs, such as VMIC starter, IS200, IS215, IS400, IS420 series, etc,
3.Emerson's card components and EPRO probes, Westinghouse 1C series, Honeywell CC series, Schneider 140 series, Envision full series, Bentley 3500 series, Rexroth motors and drives, and Foxboro small modules.
1. Module Power Supply Parameters
- Nominal Supply Voltage: 24 VDC
- Operating Voltage Range: 18 ~ 28.6 VDC
- Typical Power Consumption: 3 W
2. Field Discrete Input Specifications
- Channel Quantity: 24-channel isolated digital inputs
- Input Signal Type: 24 VDC wetted contact / dry contact
- Maximum Field Input Voltage: 32 VDC
- Logic Trigger Threshold:
- ON State: ≥ 18 VDC
- OFF State: ≤ 5 VDC
- Typical On-State Input Current: 3 ~ 7 mA per channel
- Isolation Mode: Optoelectronic isolation for each independent channel
3. Key Technical Notes
- This module is a dedicated discrete input device, with no digital output channels.
- Field wiring shall be matched with supporting terminal boards, including IS200STCIH1A, IS200STCIH2A, IS200STCIH8A and other compatible models.
- The module has no built-in loop power supply. An external 24 VDC power supply is required for wetted contact input circuits.

Case 1: Turbine Speed and Vibration Monitoring
The IS220PDIAH1B discrete input module is a core signal acquisition component for GE Mark VIe turbine control systems, extensively deployed in thermal and nuclear power generation units. It captures discrete pulse signals from turbine speed sensors and status signals from vibration safety switches. Equipped with a pre-fault data retention function, the module stores 30 seconds of operational data prior to equipment abnormalities, enabling precise post-fault troubleshooting and analysis. It effectively eliminates speed deviation faults caused by steam parameter fluctuations, minimizes unscheduled unit outages, and enhances the overall operational stability of turbine equipment.
Case 2: Oil & Gas Compressor Interlock Monitoring
This module is commonly utilized in natural gas compressor stations and petrochemical process control systems. It collects dry-contact status signals from critical field devices, including compressor pressure switches, temperature switches, filter differential pressure switches, and emergency stop contacts. With 24 optically isolated input channels, it supports multi-point synchronous signal acquisition and adapts to on-site 24 VDC external wetted contact circuits. It delivers stable and reliable signal feedback for compressor start-stop logic interlocks, parameter over-limit protection, and overall process safety control.
Case 3: Industrial Auxiliary System Status Monitoring
The module is applicable to industrial cogeneration systems, factory water treatment facilities, and automated production lines. It acquires on-site status signals such as valve position feedback, equipment running/standby state, remote/local control switching, and field alarm contacts. Benefiting from independent photoelectric isolation and wide-range voltage adaptability, the module strongly resists complex on-site electromagnetic interference, ensures high-precision and consistent discrete signal collection, and secures the stable and reliable operation of plant auxiliary control systems.

Frequently Asked Questions (FAQ)
1.How fast will you reply to my inquiry?
We process all inquiries efficiently and will respond promptly once we receive your message.
2.Do you carry large inventory of industrial control parts?
We maintain massive ready stock of mainstream automation spare parts to shorten lead times.
3.Can you source discontinued or obsolete PLC & DCS modules?
Absolutely.
We specialize in sourcing hard-to-find, obsolete and out-of-production industrial control components.
4.Do you inspect goods before shipment?
Every product undergoes thorough inspection before packing and dispatch.
5.Can you ship orders worldwide?
We provide global shipping with flexible logistics for urgent and regular orders.
6.What payment methods are available?
We accept multiple secure payment options. Please contact our sales team for detailed terms.
7.Do you offer warranty on industrial control spare parts?
Warranty differs by product.
Confirm specific warranty details with us prior to ordering.
8.Are your automation parts new or used?
We supply both new and fully tested used industrial control spare parts.
Please state your needs in your inquiry.
9.What is your typical delivery lead time?
In-stock items can be shipped quickly.
We will advise exact lead time for out-of-stock products after stock verification.
10.Can you offer technical support to check model compatibility?
Yes.Our professional team provides technical support to verify specifications and model compatibility.
