Wiring; Wiring Precautions - YASKAWA JAPMC-CP3301-1-E Instructions Manual

3 Wiring

3 Wiring
Refer to the following manual for details on connecting the product.
MP2000/MP3000 Series Machine Controller System Setup Manual
(Manual No.: SIEP C880725 00)

3.1 Wiring Precautions

Wiring precautions are given below.
• Configure the circuits to turn ON the power supply to the CPU Module
before the 24-V I/O power supply.
If the power supply to the CPU Module is turned ON after the external power
supply, e.g., the 24-V I/O power supply, the outputs from the CPU Module
may momentarily turn ON when the power supply to the CPU Module turns
ON. This can result in unexpected operation that may cause injury or device
damage.
• If you use MECHATROLINK I/O Modules, use the establishment of
MECHATROLINK communications as an interlock output condition.
There is a risk of device damage.
A power-ON sequence and an example circuit configuration are given
below.
 Outputs Connected to Relays or Solenoids
Configure circuits that will turn ON the power supply to the output devices
(relays, solenoids, etc.) only after the CPU RUN output (interlock output)
from the CPU Module turns ON.
<Power-ON Sequence>
Power source to
CPU RUN signal
Power source to
output devices
E-16
MP3300
CAUTION
OFF
OFF
OFF
ON
cpu
ON
ON