— 1-6 —
1.2. Terminology
It is necessary to be familiar with some terms used in this document.
Cable Set
A cable set exclusive use for the Megatorque Motor System. Connects driver Unit and
Megatorque Motor
CCW
Counterclockwise; direction of Motor rotation. Seen from the top of rotor.
closed
Logic output state; output current will flow.
count/rev.
Count/revolution. A unit of resolution. In some cases, it is described as pulse/rev. in this
manual.
CW
Clockwise; direction of Motor rotation. Seen from the top of rotor.
Driver Unit
Means Megatorque Motor System’s driver unit when capitalized.
Handy Terminal
Means an optional handy terminal (M-FTH21) for RS-232C communication. Exclusive
use for Megatorque Motor System. .
LO
A parameter to set a load inertia moment to the Motor. Unit is in [kg•m
2
].
Motor
Means Megatorque Motor System’s motor when capitalized.
OFF (all capital)
Logic input state; input will see an open circuit.
ON (all capital)
Logic input state; there will be a current path to the common DC supply.
open
Logic output state; no output current
servo-lock
One typical state of servo-on; the Motor provides torque and remains in position.
servo-off
The state where the Driver Unit provides no current to the Motor, and the Motor provides
no torque. The Motor rotor can be rotated easily.
servo-on
The state that the Driver Unit is ready to control the Motor, or is controlling the Motor.
shipping set
A parameter setting or a Driver Unit function setting at shipping.
System
Means Megatorque Motor System when capitalized.
velocity gain (VG)
Shorter name for velocity loop proportional gain.
The velocity error, the deviation of velocity feedback from the velocity command, will be
amplified by a number defined as a velocity gain set by the parameter VG, and will be
output as a torque command.
The following commands are used for the Driver Unit to set function and to execute
operation.
Command:
Execution instruction to the Driver Unit. It includes the command RUN to start positioning
operation and stop commands to stop positioning operation.
Parameter:
The parameters hold the operational settings of internal function of the Driver Unit. Changing of
these settings enables to move the Motor as planed
◊ Global parameter:
A parameter set to a command line in program channels. This term is used to
distinguish them from local parameters. It is stored in a non-volatile memory.
◊ Local parameter:
A parameter that is temporarily becomes effective in a program operation. It is not
stored to a non-volatile memory.
Monitor
A monitor holds the internal state of the Driver Unit, such as Motor velocity and position scale
data. You can monitor them anytime.
To Next Page
Loading...
Need help?
General
