User`s manual

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MELSEC-Q
1 GENERAL SPECIFICATIONS OF INPUT AND OUTPUT MODULES AND
INSTRUCTIONS FOR SELECTING THEM
(10) Tighten the module fixing and terminal block screws to the torques in the following
ranges.
Screw Location Tightening Torque Range
Module fixing screw (M3 12 screw) 36 to 48 N•cm
I/O module terminal block screw (M3 screw) 42 to 58 N•cm
I/O module terminal block mounting screw (M3 screw) 66 to 89 N•cm
(11)The overload protection function and overheat protection function of the following
modules will be explained below.
(a) QY40P, QY41P, QY42P, QX41Y41P, QH42P
Function Description
Common
(Overload and overheat
protection functions)
• If an overcurrent keeps flowing due to overload, heat is generated
to activate the overheat protective function.
• Each protection function is designed to protect the internal
elements of the module, not the external equipment.
Overload protection
function
• The overload protection function is activated in 1 point increments
in terms of 1A to 3A/point.
• The overload protection function returns operation to normal when
the load becomes a rated load
Overheat protection
function
• The overheat protection function is activated in 1 point increments.
• The overheat protection function automatically returns operation to
normal when heat reduces.