Yokogawa µR20000 - Manual (Page 9)

9
IM 04P02B01-02E
Function Introduction/Names of Parts
Function Introduction
The µR20000 Recorder (hereafter referred to as the recorder) can be used to assign DC
voltage, 1-5V, thermocouple, RTD, and contact or voltage ON/OFF signal to channels
for measurement. The measured results are recorded with pens or dots on a chart paper
that is fed at a constant speed. The pen model can record up to 4 channels; the dot
model can record up to 24 channels.
Alarms
For each channel, various alarms such as high limit alarm and low limit alarm can be
assigned to monitor the measured values. Alarm output relays can be used to output
contact signals when alarms occur (/A1, /A2, /A3, /A4 and /A5 options).
Recording
The measured results are recorded with pens or dots on a chart paper (trend recording).
The chart speed can be selected from 5 to 12000 mm/h on the pen model and 1 to 1500
mm/h on the dot model.
In addition to trend recording, various types of information can be printed on the chart
paper such as numeric measured values, alarm occurrence/release, and predefined
messages.
Also, the recorder settings can be printed.
Internal Light
A light is provided for easier viewing of the recording area of the chart paper.
Display
Measured values can be displayed numerically or using bar graphs on the large display.
Also, alarm status and chart speed can be displayed.
Communication Functions
Using the Ethernet communication interface (/C7 option) or the RS-422A/485
communication interface (/C3 option), the measured values on the recorder can be
output to a computer or a computer can be used to control the recorder.
For details on communication functions, see the µR10000 /µR20000 Communication
Interface User’s Manual (IM 04P01B01-17E) on the CD-ROM.
Other Main Functions
The computation function (/M1 option) can be used to perform various computations from
four arithmetic operations to statistical calculations on 8 and 24 computation channels on
the pen model and dot model, respectively. The computed results can be recorded.
The remote control function (/R1 option) can be used to control the recording start/
stop and other operations of the recorder by applying contact signals to the dedicated
terminals.
The FAIL/chart end detection and output function (/F1 option) can be used to output
contact signals when errors are detected on the recorder or when the chart paper runs out.