The IC697ALG320 is a high-level analog output module and is fully compatible with GE Series 90-30 modules. Voltage and current outputs are on a single module, and the output module has four individually configured outputs for either current or voltage. Additionally, the module provides bipolar or unipolar outputs. The IC697ALG320 analog output system provides 0 to 22.5 milliamp current loop signals with individual user scaling on each output channel. This particular output system has a fast update rate and requires no jumpers or DIP switches for configuration. It is also factory calibrated with data stored in the non-volatile EEPROM memory. Configuration of the IC697ALG is simple using MS-DOS or Windows programming software.
The high level analog output for the PLC accepts digital data from the CPU or other controllers by accessing the PLC backplane. The output is then converted by a D/A converter to analog outputs up to ten volts. The basic converter offers 16 bits of resolution with 14 bit monotonicity. Additionally, the outputs are isolated from the backplane so they are protected against steady state or transient overvoltage conditions. While it is expected for this analog system to have output loads that will be floating or tied to the same potential, it is designed to allow up to 0.5 VDC compliance voltage difference between outputs. This prevents ground loop currents or errors from happening. Additionally, outputs will operate properly in the presence of a large amount of high frequency noise if needed.
To connect the IC697ALG320 module from user devices, use screw terminals on the removable 40 terminal connector block that is mounted on the front of the module. All field connections should be wired to the I/O terminal board with good grade, twisted shielded instrumentation cable.
Technical Specifications
Voltage Output Range: -10 to +10 volts
Current Output Range: 0.0 to 22.2 mA (4 to 20 mA default)
Calibration: Factory set at 10 volts +/- 2mV
No of Outputs: 4 outputs
Module Type: Analoag Output Module
Power: + 5 volts@ 1.66A, 150mA of DC
Technical Information
Specifications
Output Ranges: | Voltage: –10 volts to +10 volts (default) Current: 0.0 mA to 22.5 mA (4 to 20 mA default) |
Resolution: | 16 bit with 14 bit monotonicity
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 15 bits on current. NOTE: User scaling may introduce degraded granularity in output voltage depending upon the scaling factors used. |
Accuracy:
Calibration Fieldcalibrationnotpossible MaximumErrors Linearity TemperatureCoefficient |
Voltage: Factory set at full scale = 10 volts Ç2.5millivolts. Current: Factory set at 4.0 mA Ç5 ⎪•A and 20 mA Ç 5 ⎪•A. Full Scale, with 24.0 VDC field side voltage. Calibratedat factory with calibration data stored in EEPROM memory. at 25oC (77oF) Ç 0.02% of full scale over entire negative to positive range. Voltage: Ç 25 PPM per oC typical Current: Ç 50 PPM per oC typical |
OutputLoading:
Voltage:
Current t: |
R: minimum = 2000 ohms C: maximum = 1000 picofarads R: up to 800 ohms C: maximum = 1.0 microfarad L: maximum = 250 millihenrys |
t The current output should be monitored for stability with step changes using inductive loads. There will be combinations of R, L, and C that will not be stable and will require additional capacitance on the current output terminals to maintain output stability with inductive loads (as shown in the followingfigure). | |
ShortCircuit: | Voltage and current outputs will handle a continuous short circuit without harm and will return to the proper output (output when shortoccurred) when the short is removed. |
ConversionRate: | Alloutputsare updated sequentiallyapproximatelyevery
2.0 milliseconds (maximum) for all 4 channels. |
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