App - 4 App - 4
MELSEC-Q
APPENDICES
Appendix 1.4 Precautions for replacing the Q62DA/Q64DA/Q68DAV/Q68DAI with
Q62DAN/Q64DAN/Q68DAVN/Q68DAIN
(1) Wiring precautions
To use existing wires of the Q62DA/Q64DA/Q68DAV/Q68DAI, an extra length of
30mm is required for the wiring of an alternative module.
When replacing the module, verify this in the actual system configuration.
(2) Differences between the Q62DA/Q64DA/Q68DAV/Q68DAI and
Q62DAN/Q64DAN/Q68DAVN/Q68DAIN
The following shows the differences between the Q62DA/Q64DA/Q68DAV/
Q68DAI and Q62DAN/Q64DAN/Q68DAVN/Q68DAIN.
These modules can be replaced without taking any specific attention except for
the wiring precautions.
Model
Item
Q62DA Q64DA Q68DAI Q68DAV Q62DAN Q64DAN Q68DAIN Q68DAVN
Analog
output
Voltage No differences
Current
0 to 20 mA DC
(External load resistance value:
refer to Section 3.1.1)
---
0 to 20 mA DC
(External load resistance value:
0 to 600 )
---
Insulation method
Between the I/O terminal and programmable
controller power supply: Photo coupler
insulation
Between output channels: No insulation
Between external supply power and analog
output: No insulation
Between the I/O terminal and programmable
controller power supply: Photo coupler
insulation
Between output channels: No insulation
Between external supply power and analog
output: Transformer insulation
Dielectric withstand
voltage
Between the I/O terminal and programmable
controller power supply: 500VAC for 1 minute
Between the I/O terminal and programmable
controller power supply: 500VAC for 1 minute
Between external supply power and analog
output: 500VAC for 1 minute
Insulation resistance
Between the I/O terminal and programmable
controller power supply: 500VDC 20M or
more
Between the I/O terminal and programmable
controller power supply: 500VDC 20M or
more
Between external supply power and analog
output: 500VDC 20M or more
External Dimension 98(H) 27.4(W) 90(D) [mm] 98(H) 27.4(W) 112(D) [mm]
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