APG DCU-1100 user manual - Manual (Page 18)

DCU-1104 and DCU-1108 Rev. A2, 11/06
18
Automation Products Group, Inc.
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Analog
The 4-20 mA analog output can be configured anywhere over the range of the
DCU-11. The 4 mA end point is entered in mode 16 and the 20 mA end point in
mode 17. The 4 and 20 mA values are calibrated at the factory but can be fine
tuned by Modes 18 and 19. The DCU-11 will digitally create a straight line
between the two points for the analog output. The resolution of the output will
be the same as the displayed resolution.
To fine tune the analog output a current meter should be connected between
the yellow and orange wires. The sensor should be aimed at a target outside the
4mA distance setting (Mode 16). The meter should read near 4 mA. If the
output requires adjustment, go to Mode 18 then press either the Value Up or
Value Down button until the meter reads 4 mA. The same can be done for the
20 mA setting using Mode 19. 4-20 mA calibration will be lost upon resetting
the sensor.
MODE DESCRIPTION PARAMETERS
16 4 mA distance Units = Mode 1
Range = 0-9999
Default = 3.00 ft.
Sets the 4 mA distance.
MODE DESCRIPTION PARAMETERS
17 20 mA distance Units = Mode 1
Range = 0-9999
Default = 4.00 ft.
Sets the 20 mA distance.
MODE DESCRIPTION PARAMETERS
18 4 mA Trim Range = 0-9999
Default = 5200
Fine tunes the minimum current sourced on the analog output.
MODE DESCRIPTION PARAMETERS
19 20 mA Trim Range = 0-9999
Default = 9208
Fine tunes the maximum current sourced on the analog output.