IC695ALG508 GE 8-Channel Isolated RTD Input Module

• Brand
  GE
• Model
  IC695ALG508
• Product Name
  8-Channel Isolated RTD Input Module
• Place of Origin
  United States
• HS Code
  8538909190
• Dimensions
  145 mm × 139.7 mm × 34 mm
• Weight
  0.45 kg
• Operating Temperature
  0 °C ~ +60 °C
• Storage Temperature
  -40 °C ~ +85 °C
• Power Supply
  24VDC
• Warranty
  12 month
• Product Status
  New and original

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.

Backplane Power Supply

Power is fed through the RX3i universal backplane; no external field power wiring is necessary.

Internal power rails: 3.3 V DC / 400 mA; 5.1 V DC / 200 mA

Maximum module power consumption: 2.5 W

RIUP hot-swap capability is supported during system operation.

RTD Channel Excitation Parameters

Each sensor channel is driven by constant excitation current, automatically configured by software according to the RTD sensor type:

Cu426 (10Ω/50Ω/100Ω): 1.654 mA / 1.175 mA

Pt385 / Pt391.6 / Ni618 (100Ω/200Ω/500Ω/1000Ω): 0.717 mA

Ni672 (120Ω): 0.717 mA

NiFe518 (604Ω): 0.238 mA

The excitation voltage varies with the resistance of the connected RTD; no external voltage supply is required for field sensors.

Input Signal Characteristics

Channel type: Differential isolated RTD/resistance input

Supported sensor connection modes: 2-wire, 3-wire, 4-wire RTD

Direct resistance measuring ranges: 0–260 Ω, 0–525 Ω, 0–1050 Ω, 0–2100 Ω, 0–3150 Ω, 0–4200 Ω

Channel isolation layout: Two groups with four channels each; continuous isolation rating of 250 V AC, dielectric withstand voltage of 1500 V AC for 1 minute.

1. Pre-commissioning Hardware Inspection

Inspect the module for physical defects including deformation, burn marks and damaged connectors. Verify that the target slot of the RX3i backplane matches the hardware configuration. The module is powered exclusively through the rack backplane with no external field power required.

Check the integrity of terminal blocks and fasten all screw terminals securely. Confirm that the field cables comply with 2-wire, 3-wire or 4-wire RTD wiring specifications. Ensure the on-site ambient conditions meet operating requirements: temperature ranging from 0°C to 60°C and relative humidity of 5% to 95% (non-condensing).

2. Module Installation & Power-on Self-test

Power off the entire rack before installing the IC695ALG508 module into the designated slot, then lock the module fixing latch firmly. Restore rack power and observe the front-panel LED indicators. Confirm the module status LED turns green after completing internal self-diagnosis with no fault alarms triggered.

If adopting RIUP hot-swap replacement, confirm the system allows hot insertion before disassembling and replacing the module.

3. Hardware Wiring Verification

Wire on-site RTD sensors strictly in accordance with the selected 2-wire, 3-wire or 4-wire connection mode. Use shielded twisted-pair cables and implement single-point grounding at the cabinet side to eliminate ground loop interference.

Ensure no short circuits exist between signal wires or to ground. Voltage signals and 4–20 mA analog signals are prohibited from connecting to this RTD module. Measure the resistance of each RTD sensor with a multimeter before field wiring to confirm sensor health and integrity.

4. Software Configuration via Proficy Machine Edition

Open the project hardware configuration and assign the IC695ALG508 module to the corresponding rack slot. Configure parameters for each individual channel as follows:

- Sensor type selection: Pt385, Pt391.6, Cu426, Ni618, Ni672, NiFe518 or direct resistance measurement mode

- Wiring mode configuration: 2-wire / 3-wire / 4-wire

- Engineering unit setup: °C or °F

- Digital filter time constant setting for field noise suppression

- Upper/lower range limit and wire-break detection threshold configuration

Download the updated hardware configuration and control logic program to the RX3i CPU, then switch the project to online monitoring mode.

5. Static Calibration Test (Bench Test / On-site Simulation)

Disconnect field RTD sensors temporarily. Connect a high-precision decade resistance box to each channel for signal simulation. Input resistance values corresponding to low, medium and high temperature points of the matched RTD sensor.

Compare the real-time PLC readings with standard theoretical temperature and resistance values, and record measurement deviations. Verify the wire-break detection function by disconnecting one sensor wire, and confirm the CPU accurately generates an open-circuit fault flag.

6. Field Sensor Online Verification

Reconnect the on-site RTD sensors after passing the static simulation test. Monitor real-time temperature values via PLC online view and HMI display. Compare module measurement data with a portable calibrated temperature tester to verify field accuracy.

Test all 8 channels sequentially to eliminate abnormal signal fluctuation and over-range faults. Verify channel isolation performance with no cross-interference during drastic temperature changes of individual sensors.

7. Fault Alarm & Diagnostic Function Test

Simulate sensor open-circuit faults to confirm the module accurately detects channel faults and uploads diagnostic information to the CPU. Simulate signal line short-circuit conditions and check corresponding fault indications.

Read the module fault log through Proficy Machine Edition to ensure all fault codes can be captured and displayed normally.

8. Long-term Stability Observation

Operate the system continuously for 2 to 4 hours under normal process conditions. Monitor temperature trend curves to ensure no random data jumps, zero drift or intermittent signal loss occurs.

Check terminal operating temperature to avoid overheating caused by loose connections. Confirm measurement data remains stable during equipment startup and load fluctuation.

9. Parameter Lock & Commissioning Document Filing

Archive and lock the final channel configuration parameters in the project file. Record complete commissioning information, including module slot number, channel configuration parameters, RTD sensor model, calibration data, measurement deviation and commissioning date.

Update wiring diagrams and label all RTD channels on terminal cabinets for subsequent daily maintenance and troubleshooting.

10. Key Precautions

This module is dedicated to RTD and resistance signal input. External voltage signals will cause permanent module damage.

Optimize filter parameters reasonably: excessive filtering will slow down system response, while insufficient filtering will result in signal jitter.

3-wire and 4-wire connection modes are recommended for high-precision measurement to effectively eliminate cable resistance errors.

Power off corresponding channel terminals before sensor replacement to avoid damage caused by transient electromagnetic interference.

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