D4000 Analog Output Modules
D4000 Analog Output Modules
The D4000 series digital to analog output modules contain an isolated 12-bit digital to analog converter that is scaled to generate DC voltage or current signals commonly used in the process control, production test and motion control industries. Six different voltage output ranges and two different current output ranges are available. Simple ASCII character commands are used to control the 12-bit digital to analog converter through either an RS-232 or RS-485 serial port.
The D4000 series analog output modules contain advanced features not found in the D3000 series. Including user-scalable input data values, a communications watchdog timer, user-programmable starting value, analog output slew-rate control and true analog output readback.
The communications watchdog timer, together with the user-programmable starting value, can be programmed to force the analog output signal to a known “safe” condition in the event of a communications failure. Ensuring that control devices like valves will not remain open if a communications cable is severed.
The D4000 contains an 8-bit analog to digital converter for true readback of the analog output signal. While not a highly accurate measurement, the readback will provide assurance that the analog output is working correctly. Use the readback to detect fault conditions, excessive load conditions, and wiring errors.
Three onboard digital inputs accept direct contact closures from switches or relays. Making them ideal for monitoring On/Off signals like cabinet door status or manually controlling the analog output at a remote module location.
