HRX-OM-Q026 
Chapter  5   Display  and  Setting  of  Various  Functions 
HRSH Series  5.6 Key-lock 
 
5-13   
5.6  Key-lock 
5.6.1  Key-lock 
The keys can be locked to prevent the settings being changed by an 
operator error. Operation can be started / stopped by operating the 
“RUN/STOP” key even when the key-lock is being activated. 
If you try to change the set value with the “▲” key or ”▼” key while the key-
lock function is activated, “ ” will be displayed for 1 second, and it is 
not possible to change the set value. (Refer to the Fig. below.)