GE-IP | 9030 | GE Fanuc 90-30 GE-IP PLC

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  • Manufacturer: GE-IP
  • Description: GE Fanuc Series 90-30 12 bit res Analog Input Voltage Current 4 Channels
  • Weight: 1 lbs :: ≈ 1 kgs
  • Warranty: 1 Years
  • Product Revisions Available:
  • Other Available Revisions of the IC693ALG220 : A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z,

Product Manual Excerpt

Analog Voltage Input - 4 Channel IC693ALG220 The 4-Channel Analog Voltage Input module for the Series 90-30 Programmable Logic Controller provides four input channels, each capable of converting an analog input signal to a digital signal for use as required by your application. The Analog Voltage Input module is capable of converting inputs in the range of 10 to +10 volts. Conversion speed for each of the four channels is one millisecond. This provides an update rate of four milliseconds for any channel. Resolution of the converted signal is 12 bits binary (1 part in 4096). User data in the %AI registers is in 16-bit 2 s complement format. The placement of the 12 bits from the A/D converter in the %AI data word is shown below. The relationship between the voltage input and the data from the A/D converter is shown in Figure 3-10. S D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X X MSB LSB X = not applicable to this discussion. X S = sign bit A/D BITS (decimal) VOLTAGE (V) 0 a44652 10 10 2000 2000 0 Figure 10-1. A/D Bits vs. Voltage Input 10 10-2 Series 90-30 PLC I/O Module Specifications July 2000 GFK-0898F Scaling of the input is shown below in Figure 3-11. %AI (decimal) VOLTAGE (V) 0 a44653 10 10 32000 32000 0 Figure 10-2. Scaling for Voltage Input A limited current input mode is also provided in the module. A jumper is provided on the user terminal connector for each channel, which may be used to connect the internal 250 ohm shunt resistor into the circuit. The shunt resistor effectively provides a 40 to +40 mA current input range. However, the input current should generally not exceed 20 mA, to avoid self-heating of the input resistor and a corresponding loss of accuracy. A 4 to 20 mA input corresponds to a 1 to 5 volt input to the voltage input module; therefore, the resolution of the 4 to 20 mA input signal is approximately 10 bits binary (1 part in 1024). The resolution can be increased to approximately 11 bits (1 part in 2048) by using a precision 250 ohm resistor in place of the jumper. The resistor causes the voltage input module to see a 4 to 20 mA input as 2 to 10 volts. The main power source for the module is derived from the isolated +24 VDC power supplied by the PLC power supply. This voltage is routed through an inverter/regulator to produce the operating voltages for the module. This module also consumes 27 mA from the +5 VDC output of the PLC power supply. An LED at the top of the module s faceplate is ON when the module s power supply is operating. The module provides electrical isolation of externally generated noise between the field wiring and the backplane through optical isolation. To minimize the capacitive loading and noise, all field connections to the module should be wired using a good grade of twisted, shielded instrumentation cable. The shields can be connected to either COM or GND. The COM connection provides access to the common of the analog circuitry in the module. The GND connection provides access to the baseplate (frame ground). This module can be installed in any I/O slot of a 5 or 10-slot baseplate in a Series 90-30 PLC system. See page 3-11 to determine the number of Analog Voltage Input modules that can be installed in a system. Note Connect the + and terminals together for all unused inputs in order to minimize any fluctuations in the analog input table for the unused points. Analog Input Modules 10 GFK-0898F Chapter 10 Analog Input Modules 10-3 Table 10-1. Specifications for Analog Voltage Input Module - IC693ALG220 Voltage Range 10 to +10 volts Calibration Factory calibrated Update Rate 4 msec (all four channels) Resolution 5 mV/20 A, (1 LSB = 5 mV) Absolute Accuracy 10 mV/40 A (typical) over operating temperature 30 mV/160 A (maximum) over operating temperature Linearity < 1 Least Significant Bit Isolation 1500 volts between field side and logic side Cross-Channel Rejection > 80 db Input Impedance > 9 Megohms (voltage mode) 250 ohms (current mode) Input Filter Response 17 Hz Internal Power Consumption 27 mA from +5 volt bus on the backplane 98 mA from the isolated +24 volt backplane bus Refer to Appendix C for product standards and general specifications. Both inputs must be within 11 volts of COM, including any noise present on the inputs. In the presence of severe RF interference (IEC 801-3, 10V/m), accuracy may be degraded to 100 mV/400 A. Analog Voltage Input Block Diagram The following figure is a block diagram of the 4-Channel Analog Voltage Input Module.

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Repair Service

3-5 Days for most repairs. 24 hour repair upon request at no extra charge. If part is unrepairable, we will exchange with a working unit or return unrepaired.