C
L E A R
P
A T H
M C / S D
U
S E R
M
A N U A L
R
E V
.
3 . 0 9
9 7
T
EKNIC
,
I
NC
. T
EL
.
(585)
784-7454
F
OLLOW
D
IGITAL
T
ORQUE
C
OMMAND
(F
REQUENCY
C
OMMAND
)
M
ODE
D
ESCRIPTION
Connect a digital variable frequency waveform from your PLC or other
device, and ClearPath will produce torque that is proportional to the
frequency of the waveform.
Assert the Enable Input to energize the motor. Control torque by applying
a variable frequency pulse train to Input B. Pulse frequency is
proportional to commanded torque. Direction in which torque is applied
(CW/CCW) is controlled by the state of Input A. See Inputs and Timing
table below.
Signal
Function
Input Type
Input A
Motor torque vs. time
Input B
Enable
Direction
Torque
Enable
NA
NA
Trigger
Logic: High=CW Low=CCW
Pulse: Variable Frequency
Logic: High=Enable Low=Disable
0
1
0
1
t
tq
Example Timing
Notes:
0
1
0
1
Variable Torque With Frequency Input Control
Torque Control
I/O
F
UNCTIONS
Enable Input -
Asserting this input energizes the motor shaft.
Input A -
This input selects the direction of the applied torque.
Input B -
This input is connected to a pulse train whose frequency
represents the desired torque.
Output (HLFB) -
See HLFB section for available modes.
Notes:
•
Input frequency range: 20 Hz to 700 kHz.
•
If the frequency signal is off for 50mS or more the input is
considered off. This is interpreted by ClearPath as a zero-torque
command.
•
Disable time = 10 mS
MCVC + MCPV
Available on
