11
16A4A4-00003E-2
■Cautions for Power Supply Wiring
(1) Wire the power source, input/output device, and power device of the TM isolating each by
sequence.
(2) Do not bundle main circuit (High voltage, high current) wires, signal wires, and power
cables, nor put them close to each other.
(3) Twist the power cable as short as possible to improve noise immunity.
(4) If there are any noise effects, attach a ferrite core to the power cable.
(5) A Safety Extra Low Voltage (SELV) and Limited Energy Circuit or SELV and Class 2 dc
power supply.
(6) The user calculates proper gauge wiring for current carrying capacity and loss ccording to
local regulations.
(7) Connect a lightening surge absorber for lightening surge measures.
(8) Separate lightening surge absorber connection (E1) and grounding of TM (E2).
(9) Choose the lightening surge absorber so the power voltage maximum increase does not
exceed the maximum capacity voltage circuit of the lightening surge absorber.
■Cautions for Grounding
(1) Have a dedicated grounding for power source cable FG.
"
Grounding resistance of 100Ω, 2mm
2
[0.0062inch
2
] or thicker wire, or your country’s
applicable standard."
(2) SG (Signal ground) and FG (Frame ground) is connected inside of TM. When connecting
connection apparatus and SG, design the system so there is no short circuiting loop.
(3) Use a grounding wire of 2mm
2
or more. Shorten the grounding wire distance near the
grounding point of TM. If the grounding wire is long, than use a large insulation wire when
setting.
