TMC-4 Control Card
for Electric Actuators
Installation & Maintenance Manual
13
04/06/22
www.atcontrols.com
IOM08139 REVISION 04
3.4.
POSITION CONFIG submenu
The
POSITION CONFIG
menu group contains parameters associated with the positioning of the actuator. There are two
types of positioning methods used; one using limit switches for two position operation, and the other using feedback
potentiometer for modulating for proportional control operation.
When using limit switches, the open and close limits are set using the mechanical cams and limit switches in the actuator.
These switches should be connected to (P5) Limit Switch header. When using feedback potentiometer, the open and
close limits are programmed in this submenu and the potentiometer should be connected to (P7) Feedback Potentiometer
header.
P O S I T I O N
T Y P E :
x x x x
Position Type
Sets type of feedback used for positioning. Default is set for potentiometer positioning.
Limit SW:
Uses position limit switches to detect discrete end of travel position for two-position
on/off control. “Calibrate Close” and “Calibrate Open” settings are not used.
Potent:
Uses potentiometer to detect position for modulating and proportional positioning
control. Limits are determined by the “Calibrate Close” and “Calibrate Open” position
settings.
C A L I B R A T E
C L O S E P O S
x x x x
Calibrate Close
Position
Only used with potentiometer feedback to set position limit when the CW motor output is energized to move
actuator in clockwise direction. This position will correspond to the “zero” value set in
COMMAND CONFIG
submenu. When selected, use [PREVIOUS ▲] or [NEXT ▼] to drive motor to desired close/clockwise position. If
limit switch position type is selected, this value is not used during operation.
Value is scaled between 12 bit count of 0 and 4095 based on the measured feedback potentiometer position.
There is no “correct” value to set to, but it is recommended to fall within the range of 400-3700.
C A L I B R A T E
O P E N P O S
x x x x
Calibrate Open
Position
Only used with potentiometer feedback to set position limit when the CCW motor output is energized to move
actuator in counterclockwise direction. This position will correspond to the “span” value set in
COMMAND
CONFIG
submenu. When selected, use [PREVIOUS ▲] or [NEXT ▼] to drive motor to desired
open/counterclockwise position. If limit switch position type is selected, this value is not used during operation.
Value is scaled between 12 bit count of 0 and 4095 based on the measured feedback potentiometer position.
There is no “correct” value to set to, but it is recommended to fall within the range of 400-3700.
T R A V E L
T I M E O U T
x x S
Travel Timeout
Only used with communication bus options. Value should be greater than the normal actuator travel time. The
TMC4 begins a timer when the motor outputs are energized to control the actuator to the commanded position. If
the timer exceeds the timeout value before the command position is reached, the motor output is turned off. When
selected, use [PREVIOUS ▲] or [NEXT ▼] to adjust value. Can also be configured via communication protocol.
DEFALUT = 60 seconds
S W A C T I N G
L I M . T O R Q .
x x x x x x x x
Switch Action
Sets contact logic of the position limit switches connected to header (P5) and stop/torque switches connected to
(P9).
N.O. indicates normally open action where input is activated when switch contact is closed.
N.C. indicates normally closed action where input is activated when switch contact is opened.
DEFAULT = N.O. / N.O.
NOTE:
Calibrate Close and Calibrate Open value is scaled between 12 bit count of 0 and 4095 based on potentiometer reading. It may
increase or decrease depending on how potentiometer is wired, but should never jump between 0 and 4095 extremes.
