4 Each Component Function
PT-E731, PT-E731S, PT-E731H, PT-E731HS User’s Manual
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AC Power Input Connector : AC-IN
Power Supply Wiring
Secure the cable terminals with screws in the FG, N and L positions of the power supply terminals at the
back of PT-E. Connect LG and FG terminals and directly earth them using an earth cable of
φ
2mm2 or
more.
PT-E731H/PT-E731HS can use power supply voltage of “100VAC to 240VAC”.
Do not connect PT-E with an improper power supply voltage. Doing so can cause a breakdown.
Figure 4.4. AC Power Connector
Wiring Precautions
This section gives the wiring guidelines for using PT-E.
The following are the instructions for wiring the power cable.
(1) Power supply wiring
(a) Connect a constant-voltage transformer if voltage fluctuations are outside the specified range.
Figure 4.5 Constant-voltage transformer
(b) Across the terminals and across ground, use power supplies that generate little noise. Connect an
isolating transformer if noise generated is excessive.
Figure 4.6 Isolating transformer
