User Manual EA4709 / EA4718
ElectroCraft
®
E-Mail: [email protected] www.electrocraft.com May 2009
31
Thermal protection
A thermal sensing device mounted to the motor to protect it from overheating. This is
accomplished by disconnecting the motor phases from the drive in an over temperature
condition.
Torque
Is a measure of angular force which produces rotational motion. This force is defined by a
linear force multiplied by a radius; e.g. lb-in or Nm. Torque is an important parameter of any
motion control system.
Two Quadrants
Refers to a motion system which can operate in two quadrants by changing the direction of
the motor speed ore in one quadrant with active accelerate and decelerate.
Watt
One horsepower equals 746 watts.
7. Description
of
Inputs and Outputs
7.1 Digital
Inputs
Enable: Activating or Disabling the Output Stage
If the
Enable
input is at GND potential or not wired at all, the output stage remains in the
locked state. The motor stands still or slow down without brake. To reactivate the output
stage, a voltage signal >3.5V to the
Enable
input is necessary.
If the ramp function is applied as well, it will immediately be carried out after the activation of
the connector.
Additional information about the schematic refer chapter 3.2.
Range of Input Voltage
0 to +24 VDC
Input Impedance
4.7 kOhm to GND
Permanent Input Protection
-0.6 to +50 VDC
Enable
activated
>3.5 VDC
Enable
disabled
<0.6 V, open or connected to GND
