IS220PGDMH1A - Standalone Digital Ground Detector I/O Module

SPECIFICATIONS:

Part Number: IS220PGDMH1A
Manufacturer: General Electric
Series: EX2100
Product Type: Standalone Digital Ground Detector I/O Module
Power Supply Voltage: 24V DC (range 18-30V DC)
Power Consumption: < 5W
Digital I/O Communication: RS-485, Modbus RTU, Ethernet
Digital I/O Interfaces Inputs: 4
Detection Range Sensitivity: 1mA to 100mA
Technology: Surface Mount
Detection Accuracy: ±1mA
Common Mode Voltage Range: ±5 V
Protocols Supported: TCP/IP, Modbus TCP
Dimensions: 200mm x 150mm x 80mm
Storage Memory: 32GB internal memory
Operating Temperature: -20°C to 70°C
Storage Temperature: -40°C to 85°C
Weight: 1.2 kg
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEI-100488C

FUNCTIONAL DESCRIPTION:

IS220PGDMH1A is a Standalone Digital Ground Detector I/O Module manufactured and designed by General Electric as part of the EX2100 Series used in GE Excitation Control Systems. A standalone digital ground detector I/O module is a device used to detect the presence or absence of a ground connection in an electrical circuit. It operates independently, without needing to be connected to a larger system or controller. In addition to the Field Ground Detector boards (EGDM and EXAM) integral to the EX2100 Excitation Control System, a standalone ground detector module is available. This module can be applied for replacement applications, or in new installations such as regulators where a second ground detector system is required. PGDM contains many of the same features as the integral EGDM detector, including:

• Detection of leakage resistance to ground from any point in the field circuit starting at the AC secondary windings of the input transformer, through the excitation system, and on the exciter or generator field.

• Constant sensitivity to grounds independent of operating voltages on the exciter or generator field.

• Constant sensitivity to grounds without regard to ground location in the exciter or generator field.

• The EX2100 software is designed to support high performance and is structured to help the customer and field engineers understand, install, commission, tune, and maintain the excitation control system.

FUNCTIONALITY:

• Auto Regulator Reference (AUTO REF) generates the auto control (AC) setpoint variable for the automatic voltage regulator (AVR). Operator commands, (raise and lower inputs) come in from direct inputs or over a data link from an HMI operator station or from a plant DCS or remote dispatch system. This block can be configured with upper and lower limits, presets, and up/down ramp times.

• Manual Regulator Reference (MANUAL REF) generates the manual setpoint variable for the manual voltage regulator (MVR). Operator commands, (raise and lower inputs) come in from direct inputs or over a data link from an HMI operator station or from a plant DCS or remote dispatch system.

• Automatic and Manual Reference Follower (Tracking) are software-implemented ramp functions that adjust the non-active regulator output to automatically track the active regulator. That is, when the auto regulator is controlling the generator, the manual regulator tracks, and when the manual regulator is controlling the generator, the auto regulator tracks.

• An excitation Limiter (UEL) is an auxiliary control to limit the AVR demand for underexcited reactive current. The UEL prevents reductions of the generator field excitation to a level where the small-signal (steady state) stability limit or the stator core end-region heating limit is exceeded. Performance is specified by identifying the region of the limiter action on the generator capability curve.

• Volts per Hertz Limiter (V/Hz Lim) limits the generator volts per hertz ratio to the programmed setting in the EX2100. This function uses two inputs from the software transducer, average generator voltage, and generator frequency (its V/Hz ratio is configurable). Typically, the generator is considered to be operating acceptably within ±5% of rated terminal voltage at rated frequency.

WOC has the largest stock of OEM Replacement Parts for GE Excitation Control Systems. We can also repair your faulty boards and supply unused and rebuilt boards backed up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on parts and repairs, kindly contact our team by phone or email.

FREQUENTLY ASKED QUESTIONS:

What types of communication protocols does this module support?

The module supports multiple communication protocols, including RS-485, Modbus RTU, and Ethernet, with protocols like TCP/IP and Modbus TCP for easy integration with other control systems.

What is the detection range and accuracy of the ground detection system?

The module has a detection sensitivity ranging from 1mA to 100mA with an accuracy of ±1mA, ensuring precise ground fault detection.

What kind of warranty is provided with this module?

WOC provides a warranty on all unused and rebuilt modules. For specific details about the warranty, please contact our support team.