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SKU 2170312  UPC 0799705795204


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MSRP $2998

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Technical Specifications for IC697ALG230

ManufacturerGE Fanuc
SeriesSeries 90-70
Part NumberIC697ALG230
Product TypeBase Converter Module
Inputs8 Differential Inputs
Voltage Input Range-10 to +10V
Current Input Range4 to 20 mA
Update Rate2.4-2.8 ms
CalibrationFactory set at 10V +/- 2 mV
Configuration SoftwareMS-DOS, Windows

Product Description

IC697ALG230 is a base converter module that can be paired with a current expander module in the GE Series 90-30.
The completed analog subsystem includes the base converter and the expander modules; however, the base converter IC697ALG230 has eight differential inputs that are individually configurable for either current or voltage. The base converter accepts either bipolar or unipolar analog inputs of up to 10 volts on the full scale. Additionally, the base converter accepts 4 to 20 milliamp current loop signals as needed. There is also individual user scaling on each input channel on the module. There are no jumpers or DIP switches to configure with this unit, and a fast update rate is common for the base converter. The configuration is easy with either Windows or MS-DOS software functions.

The IC697ALG230 module converts inputs to digital form for the CPU use or for other controllers accessing analog inputs through the VME backplane. All converted data is presented as 2’s complement, and the basic converter is at 14 bits resolution. An oversampling and average technique can further enhance this resolution. All inputs are protected against transient and steady state overvoltage conditions. Percent AI references through the analog inputs are utilized in the programmable controller, though a maximum of 8,000 words of memory is currently available. Each input channel is set to use one word of %AI memory at 16 bits. Configuration is completed through the use of the configuration function of the MS-DOS or Windows software. Additionally, field wiring is made for a removable terminal board. The module is mechanically keyed for correct replacement. I/O references are user-configurable eliminating the need for jumpers or DIP switches.

Technical Specifications

Voltage Input Range:  -10 to +10 volts
Current Input Range:    4 to 20 mA
Calibration: Factory set at 10 volts +/- 2mV
No of Inputs: 8 differential inputs
Module Type: Base Converter
Power: + 5 volts


GE Fanuc Automation manufactures the Series 90-70 IC697ALG230 Base Converter Module and it is designed for use with expander modules in the GE Series 90-30 in the high-level analog input system. This unit features 8 differential inputs which are configurable for current or voltage operation, and they can be individually configured. This unit provides individual scaling for every channel. The IC697ALG230 Base Converter Module has a fast update rate time of 2.4 to 2.8 milliseconds. It features an expansion port which is used for connecting current or voltage expander modules. To increase the number of inputs, this module can connect to up to 7 expander modules. The operators can configure internal resistors for the current inputs by connecting the upper 2 terminals to the required channel.

The GE Fanuc IC697ALG230 Base Converter Module is designed to use an efficient input sampling method with a fast update rate time. It features a serial communication port which helps to control expanders through the processor of this unit. After the maximum number of expander modules is connected, a system can have 120 inputs at maximum. It comes with a detachable 40-terminal connector block located on the front side of the module, and this can be used in connecting the user devices. The IC697ALG230 Base Converter Module has an analog-to-digital converter that connects with the expander module analog inputs through the switching circuit. It also has CPU alarm interrupts along with the CPU fault reporting functionality for each channel. Additionally, this module features the MS-DOS Windows configuration software that offers facilities that can program each and every input depending on the application requirements.

Technical Information



Input Ranges:

Voltage: –10 volts to +10 volts Current: 4 to 20 milliamps


Default Scaling (16 bit) 312.5 microvolts per LSB step on voltage 0.5 microamps per LSB step on 4 to 20 mA No missing codes over 16 bits on voltage No missing codes over 14 bits on current NOTE: User scaling may introduce skipped codes in the lower 2 or 3 bits depending upon the factors used.

Accuracy: Calibration

Factory set at full scale = 10 volts ±2 millivolts on Base Converter module. Maximum errors at 25° C (77°F) are: Base Converter Voltage, ±.01% of full scale, ±.02% of value Base Converter Current, ±.05% of full scale, ±.1% of value Expander Voltage, ±.03% of full value, ±.02% of value Expander Current,

±.07% of full scale, ±.1% of value

Base Converter

Continually self-calibrates for zero and positive full scale (before user scaling) values. Field calibration not normally required; there is no zero adjustment. A trimpot on the Base Converter adjusts full scale value at 10V input. For critical applications this can be reset to compensate for ageing of the reference.

Accuracy: Linearity

±.02% of full scale over entire negative to positive range.

Temperature Coefficient

±5 PPM per °C typical ±15 PPM per °C maximum, voltage ±30 PPM per °C maximum, current

Input Impedance:

Voltage Inputs: Greater than 10 megohms at DC AC impedance, 20K ohms in series with 0.47 mfd capacitor. Current Inputs: 250 ohm, 0.1% precision shunt

Common Mode Rejection:

Voltage Range - Peak signal input must be between +13 and –13 volts with respect to the ANLGCOM terminal.


Response to common mode signals within the above limits is typically 70 dB CMRR, corresponding to a .02% full scale reading for a 0V input at 10 volts common mode. NOTE: Continuous input signals beyond the common mode range can result in abnormal conversions without causing alarms.


High-speed inputs on the Base Converter module may show some interaction between adjacent channels. This is typically .04% of the difference between the affected input and the adjacent channel input levels. The effect can be minimized by arranging inputs with similar levels on adjacent channels. There is no measurable interaction between Expander input channels.

Conversion Rate:

Base Converter inputs updated sequentially about every 2.4 ms to 2.8 ms (maxi- mum) for all 8 channels. One Expander input updated during each scan of the Base Converter inputs. Time between Expander updates = 44.8 x N ms

(N = number of Expander modules present).


Response Time:

Each input has a low pass filter with a 100 radians/second (0.01 second) cutoff. A digital filter on the Base Converter input channels adds a second pole at 450 radians/second. A sample and hold maintains full resolution. Settling times, to the specified accuracies, for a zero to full scale step input are as follows:

5.0% 30 milliseconds

1.0% 42 milliseconds

0.5% 51 milliseconds

0.1% 67 milliseconds

Input Protection:

Inputs isolated from VME backplane - but not between input channels. They are, however, protected from overvoltage to the levels listed below.


Inputs normally not affected by common mode damped ring wave of up to 1000 volts peak. Common or transverse mode peaks up to 2500 volts cause no damage, but may cause occasional bad data if they occur coincidentally with conversion of the affected channel.

Continuous Overvoltage:

Inputs survive common mode or normal mode 120 VAC or 125 VDC fault for at least 1 minute. Longer times may damage input current limiting resistor.

Damage limited to only the affected input.

Power Requirements:


Rack Backplane

+5 volts at 0.8A (4 watts) maximum for Base Converter

+5 volts at 0.4A (2 watts) for each Expander module

Field Side

No power required for the module; however, current for 4 to 20 mA inputs must be user supplied.


Troubleshooting IC697ALG230

Troubleshooting information is available on IC697ALG230's website page; it also includes a datasheet user-manual and a wiring diagram.

Repair your IC697ALG230

PDF Supply can repair your IC697ALG230 in 3-5 business days. And PDF Supply stands by all of its repairs with a 1 year customer satisfaction warranty.


Customer Questions and Answers

  • Question:  What is an IC697ALG230?  Answer:  The IC697ALG230 is an Analog Input module from the GE Fanuc 90-70 Series. 
  •  Question:  How is a typical Analog Input System configured?  Answer:  A typical subsystem will use a Base Converter module and (if required) one or more expander modules.
  • Question:  What should I do in Proficy Machine Edition to start?  Answer:  You should set up the configuration of the physical information you see on the module(s) into the software. Then, you should set it up to read voltage. You want to get the processor into run mode.
  • Question:  With what kind of battery should I be testing my IC697ALG230?  Answer:  A DC battery
  • Question:  How should my scaling be set up?  Answer:  It will depend on how you are scaling, but you can set it up in the default values which are a high of ten thousand and a low of negative ten thousand. 
  • Question:  What am I looking for as I go from terminal to terminal when testing my IC697ALG230?  Answer:  You are looking to make sure the value stays the same from channel to channel. Since they all have the same configuration, they should all be reading the same value. 
  • Question:  If I go through the test and my readings aren't consistent- What does that mean?  Answer:  It means that there is most likely a problem with your IC697ALG230.
  • Question:  What is my next step if there is something wrong with my IC697ALG230?  Answer:  You can contact PDF Supply to have your IC697ALG230 repaired

 For more information on the IC697ALG230 Analog Input Module of the GE Fanuc 90-70 Series, please see the Datasheet User-Manual. 


ST. LOUIS, Feb. 1, 2019 – Emerson today announced it has completed the purchase of Intelligent Platforms from General Electric.

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