Handling - Mitsubishi QD70P4 User Manual

3. Handling

Install a safety circuit external to the programmable controller that keeps the entire system
safe even when there are problems with the external power supply or the programmable
controller. Otherwise, trouble could result from erroneous output or erroneous operation.
(1) Configure an emergency stop circuit and interlock circuit such as a positioning upper
limit/lower limit to prevent mechanical damage outside the programmable controller.
(2) The machine OPR operation is controlled by the OPR direction and OPR speed data.
Deceleration starts when the near-point dog turns ON. Thus, if the OPR direction is
incorrectly set, deceleration will not start and the machine will continue to travel.
Configure an interlock circuit to prevent mechanical damage outside the
programmable controller.
(3) When the module detects an error, deceleration stop will take place.
Make sure that the OPR data and positioning data are within the parameter setting
values.
Use the programmable controller in an environment that meets the general specifications
contained in CPU module User's Manual.
Using this programmable controller in an environment outside the range of the general
specifications could result in electric shock, fire, erroneous operation, and damage to or
deterioration of the product.
While pressing the installation lever located at the bottom of module, insert the module fixing
tab into the fixing hole in the base unit until it stops. Then, securely mount the module with the
fixing hole as a supporting point.
Incorrect loading of the module can cause a malfunction, failure or drop.
When using the module in the environment subject to much vibration, secure the module
with a screw.
Tighten the screw in the specified torque range.
Insufficient tightening may lead to dropping, short-circuit, or malfunctioning.
Excessive tightening may damage the screw or module, leading to dropping, short-circuit,
or malfunctioning.
Completely turn off the externally supplied power used in the system before mounting or
removing the module. Not doing so may cause damage to the module.
Do not directly touch the module's conductive parts or electronic components.
Touching the conductive parts could cause an operation failure or give damage to the
module.
DANGER
CAUTION
3