6 wiring precautions, 6-1 reducing electrical noise, Wiring precautions – Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-MMA21 User Manual
Page 108: Reducing electrical noise, I/o signal wiring

85
Wiring Precautions
Section 3-6
• Attach the modified cable to the XW2D-40G6 Connector-Terminal Block
Conversion Unit.
3-6
Wiring Precautions
3-6-1
Reducing Electrical Noise
I/O Signal Wiring
Whenever possible, place I/O signal lines and power lines in separate ducts or
raceways both inside and outside of the control panel.
If the I/O wiring and power wiring must be routed in the same duct, use
shielded cable and connect the shield to the GR terminal to reduce noise.
RS-422A Connecting Cable
Connector-Terminal Block
Conversion Unit terminal
number
No.
Signal
2
SDB+
A18
1
SDA
−
A17
8
RDB+
B18
6
RDA
−
B17
XW2D-40G6 Connector-
Terminal Block Conversion Unit
XW2Z-100J-C1 or
XW2Z-200J-C1
RS-422A Cable
1
2
1
2
1
2
1 = I/O cables
2 = Power cables
Suspended ducts
In-floor ducts
Conduits