Mitsubishi Electric Q66DA-G, User Manual

Page: 16 / 190

1
- 1 1.1 Features
1
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) that is used in combination with a MELSEC-Q series CPU module
(hereinafter referred to as the programmable controller CPU).
1.1 Features
(1) Multi-channel analog input is available.
By using a single Q66DA-G, analog voltage or current outputs of 6 points (6 channels)
are available.
(2) Channel isolated
The channels are isolated from each other and from the external supply power.
(3) High accuracy
The reference accuracy*
1
is as high as +0.1% and the temperature coefficient*
2
is as
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 changed from 25°C to 30°C
0.1% (reference accuracy) + 0.008%/°C (temperature coefficient) 5°C
(temperature difference) = 0.14%
(4) Output range switching
The output range*
1
switching can be set easily from GX Developer.
*1: The output range indicates the offset/gain setting type. While the generally used output ranges are
available as defaults, the user can set offset/gain values. (Refer to Section 4.5.)
(5) Analog output HOLD/CLEAR function
This function is used to set whether to hold or clear the analog output value when the
CPU module is stopped or when a stop error occurs. (Refer to Section 3.2.1.)
(6) Changing the resolution mode
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)