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MELSEC-Q
3 SPECIFICATIONS
3
Model name
Item
Q64AD Q68ADV Q68ADI
Conversion speed
80 s/channel
(When there is temperature drift, the time calculated by adding 160 s will be used
regardless of the number of channels used)
Absolute maximum input Voltage : ± 15 V Current : ± 30 mA
E
2
PROM write count Max. 100 thousand times
Insulation method
Between the I/O terminal and PLC power supply : Photocoupler insulation
Between channels : Non-insulated
Dielectric withstand voltage Between the I/O terminal and PLC power supply: 500VAC for 1 minute
Insulation resistance Between the I/O terminal and PLC power supply: 500VDC 20M or more
Number of occupied points 16 points
Connection terminals 18-point terminal block
Applicable wire size 0.3 to 0.75 mm
2
Applicable solderless terminal R1.25-3 (A solderless terminal with sleeve cannot be used)
Internal current consumption
(5 V DC)
0.63 A 0.64 A 0.64 A
Weight 0.18 kg 0.19 kg 0.19 kg
REMARK
See the user’s manual for the CPU module being used for general specifications of
the A/D converter modules.
3.1.2 I/O conversion characteristic
The I/O conversion characteristic represents the angle formed by a straight line
connecting the "offset value" and "gain value" when the analog signals (voltage or
current input) from outside the PLC are converted to digital values.
Offset value
The offset value denotes the analog input value (voltage or current) that makes the
digital output value 0.
Gain value
The gain value denotes the analog input value (voltage or current) that makes the
digital output value:
4000 (in normal resolution mode)
12000 (when 0 to 5 V, 1 to 5 V, 4 to 20 mA, 0 to 20 mA or the user range setting is
selected in high resolution mode)
16000 (when -10 to 10 V or 0 to 10 V is selected in high resolution mode).