NOTE: Pre Load and Pre Rate defined from the control menu are always executed first when START button is pressed to begin test.
If either Pre Load OR Pre Rate is set to zero, then the Pre function will be by passed and control segment A will start immediately
upon pressing the START button.
8. Control Gains- Specify PID gains for automatic control. Position gain should be factory preset. Crosshead movement with eP2
controller is always under position control. Load gain needs to be set if you are running procedure where you want to hold load.
4.7 The Zero Menu
1. Both- Resets both the load and position readings to zero. The home location is relative to zero position.
NOTE: The absolute position zero is not affected by this action.
2. Load- Resets the load readings to zero.
3. Position- Resets the position readings to zero. The home location is relative to zero position.
NOTE: The absolute position zero is not affected by this action.
4. Strain - Resets the strain readings to zero, only appears if strain option is installed.
5.0. Calibration
5.1. Transducer Autorecognition
The eP2 controller features transducer autorecognition. When calibrated load cell is connected to the eP2, the controller identifies
the transducer's serial number and loads the appropriate calibration into eP memory for testing.
5.2. How to Calibrate Analog Transducers
You can calibrate up to 4 load cells to the eP2. There can be up to 5 points in each calibration. The first point in the calibration MUST
be zero load.
There are two options for calibrating analog transducers to the eP2 Digital Controller.
A) Multipoint Calibration
Adjust the transducer to multiple known engineering unit values and enter the points into the eP2 Digital Controller
B) Two Point Shunt Calibration
Two point shunt calibration with zero load as first point and second point set by selecting 1) Shunt in the
calibration menu. Depressing the shunt button puts resistance across bridge that simulates exercising the
transducer to known value.
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