Example Of Using Transient Commands - Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual

Example of using transient commands

The following explains the operating procedure for setting the transient command data types "Friction estimation", "Vibration
estimation", and "Optional transient command".
Friction estimation/vibration estimation
Setting "Friction estimation" and "Vibration estimation" to the optional monitor data settings does not enable the correct values
to be stored. With the procedure below, perform machine diagnosis and store the values.
Operating procedure
1.
In optional data monitor settings, set the transient command data type "machine diagnostic status", "friction estimation",
and "vibration estimation".
2.
Operate the servo motor for approximately 20 minutes in the operation pattern of servo parameter "Machine diagnosis
function - Friction judgment speed (PF31)" until the diagnosis function is complete.
3.
Check that the "forward rotation friction (b0 only)", "reverse rotation friction (b4 only)", and "vibration estimation (b8)" of
the machine diagnostic status are ON, and the machine diagnosis is completed normally. When the values are not that of
estimation completion and machine diagnosis fails, repeat the operating procedure starting from procedure 2.
4.
Check the stored values in the devices set by "friction estimation", "vibration estimation".
When the correct machine diagnosis conditions are not reached at the time of machine diagnosis estimation,
the friction estimation and vibration estimation are not stored. Refer to the following manual to make sure the
correct machine diagnosis conditions are reached.
 Servo amplifier Instruction Manual
■Setting example
An example for setting "machine diagnostic status", "friction estimation", and "vibration estimation" in the data type of the
optional data monitor is shown below.
Ex.
When setting "Setting 1 to Setting 3" of optional data monitor, and storing friction estimation to "W50 to W53", and vibration
estimation to "W60 to W63"
• Optional data monitor setting
Item
Setting 1 Data type
Address/Transient ID
Storage device No.
5 FUNCTIONS USED WITH SSCNET COMMUNICATION
180
5.2 Optional Data Monitor Function
Setting value Remarks
Machine diagnostic status The data returned by the machine diagnostic status is stored in W8. (Settings and operations
are not performed in W0 to W7.)

The friction estimation status can be checked as follows.
W0
b15
W8
b9 b8 b7 b4 b3 b0
Forward rotation friction
0000: Estimating friction
0001: Estimating complete
0010: One side operation (motor rotation
0011: Parameter threshold exceeded
0100: Low variation high-speed operation
0101: Time constant underestimate
0111: 60 minutes elapsed
Reverse rotation friction
0000: Estimating friction
0001: Estimating complete
0010: One side operation (motor rotation
0011: Parameter threshold exceeded
0100: Low variation high-speed operation
0101: Time constant underestimate
0111: 60 minutes elapsed
Vibration estimation
0: Estimating vibration
1: Estimating complete
stays in one direction)
stays in one direction)