GE IC670ALG320 Analog Output Module
General info
| Manufacture | GE |
| Item No | IC670ALG320 |
| Article number | IC670ALG320 |
| Series | GE FANUC |
| Origin | United States（US） |
| Dimension | 180*180*30(mm) |
| Weight | 0.9 kg |
| Customs Tariff Number | 85389091 |
| Type | Analog Output Module |
Detailed data
GE IC670ALG320 Analog Output Module
The Analog Output Module (IC670ALG320) provides a set of four current/voltage analog outputs. Each output channel provides a range of 4–20mA and 0–10V, which can be changed to 0–20mA and 0–12.5 volts by adding jumpers on the I/O terminal block. The default scaling is 0 to 20,000. The scaling can be changed in the configuration to match the output or engineering units used.
In most cases, the same 24 volt supply used by the bus interface unit can provide loop power for the outputs. If module-to-module (or bus interface unit) isolation is required, a separate supply must be used.
The most common application is to place the loop power local to the module, driving multiple isolated sensors, isolated analog inputs, or differential analog inputs.
Host Interface
The current source analog output module has 4 words (8 bytes) of analog output data. A bus interface unit is required to provide this output data to the host and/or local processor.
The module converts analog values from a host or local processor into output currents. Scaling of the module is performed by the bus interface unit. Each channel offers software range selections of 0 to 20mA and 4 to 20mA. Use of the 0 to 20 mA range requires installation of an external jumper between JMP and RET.
The default scaling for this module is:
Eng Lo = 0
Eng Hi = 20,000
Int Lo = 0
Int Hi = 20,000
The default range is 0 to 20mA. The module is shipped without a jumper. The jumper must be installed to correspond to the module's default range and scale.
The 4–20mA range provides a fixed 4 mA offset (0mA = 4mA signal) with a 16mA signal span. The 4mA offset remains constant as long as analog loop power is applied, even if logic power is off. Note that the default output for host communication loss requires backplane power and analog field power.
The second output on each channel provides an uncalibrated voltage output. The 4 to 20mA range corresponds to 0 to 10 volts. The 0 to 20 mA range corresponds to 0 to 12.5 volts. A jumper is required for the 0 to 20mA range. Both voltage ranges limit the ability to drive load currents above 10 volts. The voltage can be used alone or in conjunction with the current to drive a meter or voltage input device.
