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Term
DIFFERENTIAL OUTPUT TYPE
START COMPLETE
BIAS SPEED AT START
STARTING AXIS
COMMAND PULSE
MANUAL PULSE GENERATOR
OUTPUT TERMINAL
CONTROL UNIT
SETTING UNIT
ABSOLUTE POSITION DETECTION
SYSTEM
This is one type of encoder feedback pulse output. When one signal is output with this method, a companion
signal having the reverse polarity is simultaneously output. This method enables high-frequency transfer, and is
resistant to noise, etc., so it is also used in high-speed signal transfer such as inputting and outputting of pulse
trains. In general, the transmission side is called the driver, the reception side is called the receiver, and a
dedicated IC is used.
This signal gives an immediate response notifying the user that the LD75 that was started is now in a normal
state and can start positioning.
A large amount of torque is required when the machine starts moving, but the torque may be unstable at speed 0
with stepping motors. Therefore, movement can be smoothly carried out by starting the movement at a given
speed from the beginning. The bias speed at start is the speed set at that start.
Speed 0
One of the LD75 axis system axes (axis 1, axis 2, axis 3, or axis 4) or the reference axis for the interpolation
operation is designated as the starting axis.
Refer to the term "FEED PULSE".
The handle of this device is manually rotated to generate pulses. This device is used when manually carrying out
accurate positioning.
Made by Mitsubishi Electric Corp.
(model: MR-HDP01)
This is a pin connector for outputting data from the LD75 to an external source. It is connected to the motor drive
unit. This terminal is used to output the following.
• Feed pulses for both forward run and reverse run
• Deviation counter clear
The terminal Nos. are determined for each axis.
The output No. Yn is not directly related to the program, so it is not used.
This is one type of positioning reference data. The unit to be used is designated as mm, inch, degree, or pulse.
This is one setting item of the positioning reference parameters. The unit to be used is designated as mm, inch,
degree, or pulse.
In the absolute position detection system, once an OPR is carried out at the system startup, the system stores
the machine position in the memory and retains the current position even when the power is turned OFF.
Mechanical deviation will be compensated, so that the OPR is not required after the power is turned ON next
time. Configuring this system requires a motor with an absolute position detector and a servo amplifier and
positioning module compatible with an absolute position detection system.
Description
Full speed
Bias speed
APPENDICES
A
785
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Troubleshooting
