GE IC693ALG442 Analog Current/Voltage Combination Module
Analog Current/Voltage Combination Module
4 Input/2 Output Channels - IC693ALG442
The Analog Current/Voltage Combination Input/Output module provides up to 4 differential
input current or voltage channels and 2 single-ended output channels with either current loop
outputs or voltage outputs. Each channel can be individually configured for the current or
voltage range, as applicable, required for your application. All module configuration is done
through software, except for a jumper required for selecting the current input mode. All ranges
can be configured using either the Logicmaster 90-30/20/Micro programming software
configurator function or the Series 90-30 Hand-Held Programmer.
Note that in this module’s description, the module will be simply referred to as the Analog Combo
Module.
Each analog input is capable of providing five input ranges (two voltage and three current),
which are:
0 to +10 volts (unipolar) - default range for both input and output channels.
–10 to +10 volts (bipolar)
0 to 20 mA
4 to 20 mA
4 to 20 mA Enhanced
The default input range is voltage mode 0 to +10 volts (unipolar) with user data scaled so that
0V corresponds to a count of 0 and 10V corresponds to a count of 32767.
Each analog output is capable of providing four output ranges (two voltage and two current):
0 to +10 volts (unipolar) - default range for both input and output channels.
–10 to +10 volts (bipolar)
0 to 20 milliamps
4 to 20 milliamps
Each output channel is capable of converting 15 to 16 bits (depending on the range selected) of
binary (digital) data to an analog output for use as required by your application. User data in
the%AI and %AQ registers is in a 16-bit 2’s complement format. In current modes, an open-wire
fault is reported to the CPU for each channel. The module can go to a known last state when
system power is interrupted. As long as user power is applied to the module, each output will
maintain its last value, or reset to the low end of the scale (range), as determined by how you have
configured the module.
Each output channel can be configured to operate in ramp mode using ladder logic. In ramp
mode, changes in %AQ data cause the corresponding output channel to ramp to the new %AQ
value. The ramp output consists of steps taken each millisecond until the final value is reached.
High and low alarm limits can be set for all input channels and an open-wire fault (current
output modes) is reported to the CPU for each output channel. All six analog channels may be
updated on every scan, depending on the scan time.
Table 12-1. Specifications for IC693ALG442
Analog Output Specifications
Number of Output Channels 2, Single-Ended
Update Rate 4 milliseconds (approximate - both channels)
Analog Current Output
Output Current Ranges 0 to 20 mA
4 to 20 mA
Resolution
0 to 20 mA 0.625 µA (1 LSB = 0.625 µA)
4 to 20 mA 0.5 µA (1 LSB = 0.5 µA)
Absolute Accuracy1
All Current Modes ± 0.1% of full scale @25°C (77°F), typical
± 0.25% of full scale @25°C (77°F), (maximum)
± 0.5% of full scale over operating temperature range (maximum)
Maximum Compliance Voltage VUSER –3V (minimum) to VUSER (maximum)
User Load 0 to 850 Ω (minimum) at VUSER =20V,
maximum 1350Ω at VUSER =30V
Output Load Capacitance 2000 pF (maximum)
Output Load Inductance 1 H (maximum)
Analog Voltage Output
Output Ranges –10 to +10V (bipolar)
0 to +10V (unipolar)
Resolution
–10 to +10V 0.3125 mV (1 LSB = 0.3125 mV)
0 to +10V 0.3125 mV (1 LSB = 0.3125 mV)
Absolute Accuracy2
Both Voltage Modes ± 0.25% of full scale @25°C (77°F), typical
± 0.5% of full scale @25°C (77°F), (maximum)
± 1.0% of full scale over operating temperature range (maximum)
Output Loading 5 mA (2K ohms minimum resistance)
Output Load Capacitance 1 µF (maximum capacitance)
Analog Input Specifications
Number of Input Channels 4, differential
Update Rate 8 milliseconds (approximate for all 4 channels)
Analog Current
Input Ranges 0 to 20 mA
4 to 20 mA
4 to 20 mA Enhanced
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Resolution
0 to 20 mA 5 µA (1 LSB = 5 µA)
4 to 20 mA 5 µA (1 LSB = 5 µA)
4 to 20 mA Enhanced 5 µA (1 LSB = 5 µA)
Absolute Accuracy3
All Current Modes ± 0.25% of full scale @25°C (77°F)
± 0.5% of full scale over specified operating temperature range
Linearity <1 LSB
Common Mode Voltage 200V (maximum)
Common Mode Rejection >70 db at DC; >70 db at 60 Hz
Cross Channel Rejection >80 db from DC to 1 kHz
Input Impedance 250 Ω
Input Filter Response 29 Hz
Analog Voltage Input
Input Ranges 0 to +10V (unipolar)
–10 to +10V (bipolar)
Resolution
0 to +10V 2.5 mV (1 LSB = 2.5 mV)
–10 to +10V 5 mV (1 LSB = 5 mV)
Absolute Accuracy3
Both Voltage Ranges ± 0.25% of full scale @25°C (77°F)
± 0.5% of full scale over specified operating temperature range
Linearity <1 LSB
Common Mode Voltage 200V (maximum)
Common Mode Rejection >70 db at DC; >70 db at 60 Hz
Cross Channel Rejection >80 db from DC to 1 kHz
Input Impedance 800K Ω (typical)
Input Filter Response 29 Hz
Power Requirements
External Supply Voltage Range 20 to 30 VDC (24 VDC typical)
Power Supply Rejection Ratio
(PSRR)4
Current
Voltage
5 µA/V (typical), 10µA/V (maximum)
25 mV/V (typical), 50mV/V (maximum)
Voltage Ripple 10%
Current Consumption
From Internal +5V Supply 95 mA
From External User Supply 129 mA
1In the presence of severe RF interference (IEC 801-3, 10V/m), accuracy may be degraded to ±1% FS.
2In the presence of severe RF interference (IEC 801-3, 10V/m), accuracy may be degraded to ±4% FS.
3In the presence of severe RF interference (IEC 801-3, 10V/m), accuracy may be degraded to ±2% FS.
4PSSR is measured by varying VUSER from 24V to 30V.