AB1A-3U Description
Nanomotion Ltd.
Page 12 of 29
The motor has three terminals: “UP” (red wire), “DOWN” (white wire) and
“COMMON” (black wire). The voltage applied between the “UP” and the “COMMON”
terminals causes the motor to move in one direction, while voltage applied between
the “DOWN” and the “COMMON” terminals causes the motor to move in the
opposite direction.
Figure 2 is a schematic drawing of the power output.
+48v
H-BRIDGE
DIRECTION
CONTROL
NANOMOTION
MOTOR
COMMON
UP
DOWN
"Common"
"Phase"
"Up"
"Down"
LC Card
AC output that drives
the motor
AB1A3U
PWM - Square wave on
the amplifier output
Figure 2: Schematic Diagram of the Output Stage with an Internal LC Card
1.4
Operation Modes
The AB1A-3U can be operated in one of the following operation modes:
•
Velocity Mode
, in which the motor is driven continuously.
•
Gate Mode
, in which the motor is driven at low velocity by
turning the driver output ON and OFF in time intervals defined
by outside TTL signal in an open loop.
•
Step Mode
, in which the driver output is turned OFF and ON
at predefined intervals, in order to drive the motor in discrete
steps.
