Mitsubishi Electric MELSEC Q Series Programming Manual page 91

3 START-UP PROCEDURES
Item
Allowance Value of Speed
Deviation
SSM Hysteresis Width
SSM Output Y Device No.
External Sensor Input X
(Note-2)
Device No.
Set the allowance value for the difference between the speed command value
and the feedback speed (speed deviation value) while the speed monitor of the
axis which performs the speed monitor is permitted. As a general guideline, set
allowance speed deviation value to 90% of safety speed,
Set the hysteresis width (speed width) for outputting safe speed monitor signals
(SSM signals) when Speed monitoring function is performed.
Set the PLC CPU side device number of the safety signal module which assigns
safe speed monitor signals (SSM signals) when Speed monitoring function is
performed. When SSM signals are not required, set FFFF.
As for the device number on Motion CPU side, the number that corresponds to
the set device number on PLC CPU side is assigned.
Set the input (X) device No. on the PLC CPU side (occupies two points) of the
safety signal module which inputs pulses of the pulse output system connected
mechanically to the servo axis which performs the speed monitor.
In the Motion CPU side, the input (X) device number corresponding to PLC CPU
side is assigned. Make sure to set the A-phase/B-phase mode to use the
standstill monitoring (SOS).
[Setting device number is an even number. (A-phase/B-phase mode)]
• External auxiliary pulse input A-phase: X (setting device No.)
• External auxiliary pulse input B-phase: X (setting device No. + 1)
[Setting device number is an odd number. (1-phase mode)]
• External auxiliary pulse input: X (Setting device No.)
("Setting device number -1" can be used as a general input.)
[Setting example]
Block No.
External sensor input X device number
Input device allocation
X200 Unused (Usable as a general input.)
X201 Sensor input for block No.1 (1-phase)
X202 Sensor input for block No.2 (A-phase)
X203 Sensor input for block No.2 (B-phase)
X204 Unused (Usable as a general input.)
X205 Sensor input for block No.3 (1-phase)
When the speed monitor axis uses a safety encoder and safety communication
function, this setting is disabled.
Description
No.1 No.2
0201 0202 0205
3 - 8
Setting range
(Note-5)
0000 to 1FFF, FFFF
0000 to 1FFF
No.3