Yaskawa YASNAC PC NC Connecting Manual - Manual (Page 15)

YASNAC PCNC Connecting Manual Preface/Table of Contents
xiv
WIRING
CAUTION
• Use the shortest wires when making connections.This helps prevent malfunction.
• Connect the +24V DC power supply to the PC NC unit.
1. The power supply should be provided at the customer’s site.
(The power supply unit, UPS000004, is available as an option.)
2. Supply the power in the range of +24V DC +10% to the PC NC unit’s inlet (CN05).
• Do not run the I/O signal wires with power wires or in the same duct. Ample separation of signal
wires from power wires will reduce the noise influence.
• If noise occurs, use a noise suppressor to eliminate it. Refer to the section in this connection
manual for noise filter specifications and capacities.Use of the correct noise filter will reduce
noise influence.
• Be sure to complete the end-terminal-processing to the last module of the remote I/O module.
Set the “TERMINATION” shorting pin to “ON”.
Failure to follow these instructions could result in malfunction.
CAUTION
• Electrical wiring and connections should be performed by qualified personnel only.
Failure to observe this precaution could result in product failure, fire and/ or
personal injury or death due to electrical shock.
• Never connect a three-phase power supply to motor output terminals, U,V or W of the drive unit.
Damage to the device will occur if incorrectly connected.
• Select the type and size of wire based on your requirements and current capacity. When the
ambient temperature exceeds 30
o
C (86
o
F), the allowable current drops. Select the cable size to
conform to the local electrical codes and cable manufacturer’s specifications.
Failure to comply could result in an electrical fire.
• Use twisted wire or multi-core twisted pair shielded wire for general signal wires and feedback
signal wires for the encoder.
These wire types help prevent malfunction.