Overview; Features - Mitsubishi MELSEC-Q series User Manual

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OVERVIEW

1 OVERVIEW
This User's Manual describes the specifications, handling and programming methods for
the Q66DA-G type channel isolated digital-analog converter module (hereinafter referred
to as the Q66DA-G) which are used in conjunction with MELSEC-Q series CPU module
(hereinafter referred to as the programmable controller CPU).
1.1

Features

(1) Multi-channel analog input is available.
(2) Channel isolated
(3) High accuracy
(4) Output range switching
(4) Analog output HOLD/CLEAR function
(5) Output monitor function
(6) Changing the resolution mode
By using a single Q66DA-G, analog voltage or current outputs of 6 points (6 channels)
are available.
The module is isolated between the channels and between the external supply power
and channels.
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The reference accuracy*
high as -80ppm/°C.
*1: Accuracy attained at the ambient temperature when offset/gain setting has been made
*2: Accuracy per temperature change of 1°C
Example) Accuracy when the ambient temperature varies from 25°C to 30°C
0.1% (reference accuracy) + 0.008%/°C (temperature coefficient)
(temperature variation difference) = 0.14%
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The output range* switching can be set easily from GX Developer.
*1: The output range indicates the offset/gain setting type. Besides the generally often used output
ranges available as defaults, the user can make offset/gain settings and use the values. (Refer to
Section 4.5)
This function is used to set whether the analog output value will be held or cleared
when the CPU module is in a STOP status or when a stop error occurs. (Refer to
Section 3.2.1)
The analog output value output by D/A conversion is reconverted into a digital value
within the Q66DA-G and the result is stored into the buffer memory as an output
monitor value.
The resolution mode can be changed according to the application, and digital value
resolution settings of 1/4000, 1/12000 or 1/16000 can be selected. (Refer to Section
4.5)
is as high as +0.1% and the temperature coefficient*
2
is as
5°C
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1.1 Features
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