Yaskawa MP940 Reference Manual - Manual (Page 326)

Inspection Items MotionSuite™ MP940 Machine Controller Reference Manual
8-2
Periodic Inspection
The spot inspection items that must be executed once or twice every six
months to a year are detailed below. Execute these spot checks whenever the
installation has been moved or altered, if the wiring has been modified, etc.
Periodic Inspection Items
• Do not change the internal fuse.
Customer replacement of the internal fuse may result in damage to the module or mis-
operation. Replacement of the internal fuse is to be performed by Yaskawa service
department personnel only.
Item Inspection Items
Inspection
Content
Determination
Standard
Installation
1 Surrounding
Environment Ambient
Temperature Measure corro-
sive gas with
thermometer/
hydrometer 0 ~ 55ºC When used in a panel,
the temperature within
the panel is the ambi-
ent temperature.
Ambient Humidity 30 ~ 95%RH
Atmosphere No corrosive gas
2 Power Voltage Check Voltage measure-
ment between
24VDC terminals DC19.2 ~ 28.8V Changing of supplied
power
3 Mounting
State Looseness, rattling Try running the
module. These should be
securely mounted. Tighten screws
Attachment of
grime, foreign
material²‚ Appearance Nothing stuck to
unit Removal, cleaning
4 Connection
State Looseness in termi-
nal screws Tighten with
screwdriver. There must be no
looseness. Tighten
Adjacent to contact
terminals Appearance Separation should
be normal. Straighten
Connector
looseness Appearance There should be no
looseness. Tighten the connector
fixing screws.
5 Battery Check the “BAT”
LED on the front
panel of the
MP940. The “BAT” LED
must be OFF. Change the battery if
the “BAT” LED is ON.
CAUTION