Simultaneous Operation Of Sto And Ss1 Functions; At Alarm Occurrence - Mitsubishi Electric MR-D30 Instruction Manual

4. SAFETY OBSERVATION FUNCTION

4.5.9 Simultaneous operation of STO and SS1 functions

When SS1C (SS1 command) turns off during the operation of the STO function, deceleration and time count
by the SS1 function will not be executed and the STO function continues the operation.
As the following sequence, time count of the SS1 function will not executed if SS1C (SS1 command) turns
off during the STO state by STOC (STO command). Even if STOC (STO command) is turned on, the STO
state by SS1C (SS1 command) continues without being canceled.
Servo motor speed
STOC
(STO command)
SS1C
(SS1 command)
STOS
(STO output)
Similarly, when STOC (STO command) is turned off during the operation of the SS1 function, both
deceleration of SS1 and time count will be canceled.

4.5.10 At alarm occurrence

When an error occurs during operation, the corresponding alarm or warning is displayed. If any alarm or
warning has occurred, refer to section 7 and take the appropriate action.
(1) Summary
(a) Stop method
The following stop methods are available when MR-D30 is used.
Stop method
DB Stops with dynamic brake. (Coasts for the servo amplifier without dynamic brake.)
600 W or less servo amplifiers: Stops with electronic dynamic brake.
EDB
700 W or more servo amplifiers: Stops with dynamic brake.
SD The forced stop deceleration is performed.
Stops with dynamic brake by activating the STO function. For the operation sequence of this stop method, refer to
STO/DB
4.5.1.
Activates the SS1 function. 600 W or less servo amplifiers: Stops with electronic dynamic brake.
SS1/EDB 700 W or more servo amplifiers: Stops with dynamic brake. For the operation sequence of this stop method, refer
to 4.5.2.
Activates the SS1 function. The forced stop deceleration is performed. For the operation sequence of this stop
SS1/SD
method, refer to 4.5.2.
STO/DB, SS1/EDB, and SS1/ED are mainly an internal alarm of MR-D30. The STO state continues
until the power is cycled or reset.
(b) Safety observation function stop
If a serious error is detected in MR-D30, the SLS and SSM functions will stop. For the alarms which
stop these functions, refer to chapter 7. When the function stops, output devices will output off.
STO state by STOC (STO command)
0 r/min
ON (disabled)
OFF (enabled)
ON (disabled)
OFF (enabled)
ON (disabled)
OFF (enabled)
Explanation
4 - 37
STO state by SLS1C (SLS1 command)
SS1 operation time