Mitsubishi Electronics Q68RD3-G ユーザーズマニュアル
1
OVERVIEW
1.1 Features
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1.1
Features
(1) Isolated channels
The Q68RD3-G is a channel isolated module.
(2) Temperature measurement of eight channels available in one module
The Q68RD3-G can measure temperature of eight channels in one module.
The module can also convert the detected measured temperature values into scaling
values (ratios (%)).
The module can also convert the detected measured temperature values into scaling
values (ratios (%)).
(3) Conversion enable/disable setting
Conversion enable/disable setting is possible for each channel. Disabling conversion
for unused channels prevents unnecessary disconnection detection.
for unused channels prevents unnecessary disconnection detection.
(4) Use of 3-wire RTDs conforming to standards
3-wire RTDs listed in the table below can be used.
Also, RTD type and measurement range can be set for each channel using GX
Developer.
Developer.
(5) Disconnection detection
Disconnection status of RTD can be detected for each channel by Disconnection
detection flag.
Disconnection status can also be detected from the measured temperature value by
setting "Up scale", "Down scale" or "Given value" for the Conversion setting for
disconnection detection.
detection flag.
Disconnection status can also be detected from the measured temperature value by
setting "Up scale", "Down scale" or "Given value" for the Conversion setting for
disconnection detection.
(6) Selection of sampling processing, time average processing, count
average processing, moving average processing, and primary delay
filter
filter
A temperature conversion system: sampling processing, time average processing,
count average processing, moving average or primary delay filter can be selected for
each channel.
count average processing, moving average or primary delay filter can be selected for
each channel.
(7) Error compensation by offset/gain value setting
Error compensation is available by setting offset/gain values for each channel.
Offset/gain values can be selected from user range setting and factory default setting.
Offset/gain values can be selected from user range setting and factory default setting.
Table 1.1 Available RTD
RTD
Compliant standard
Platinum RTD
Pt100
JIS C 1604-1997, IEC 751 1983
JPt100
JIS C 1604-1981
Nickel RTD
Ni100
DIN 43760 1987