7
Getting Started
Model 101303-50
Note:
The module will exit the menu system and return to the
main display in 60 seconds if no keys are pressed.
If the limit sensor reaches this setpoint for any reason the heater output will be shut
off until the user resets the instrument manually (by pressing the infinity key on the
limit module after the temperature has dropped more than 2 °C below this alarm
limit).
On the LIMIT module
:
1.
Press Advance key until “A1hi” is displayed in the lower (right) display.
2.
The alarm setpoint may now be set with the arrow keys.
3.
Return to the main display by pressing the infinity key.
5. Set the setpoint
1.
The setpoint can be adjusted using the up and down arrow keys from the
home page (not while inside any other menus). At this point, adjust the
setpoint to a value below the current process temperature to avoid applying
power to the output. The lower display shows
if the setpoint is
adjusted to its lowest permissible value (0° C).
6. Verify proper system performance
1. If your system will be damaged by 100% output power, set the power limits
on the control module as described in the Advanced Features section. In
Appendix A, the Power Limit Parameters factory preset is shown.
2.
Turn the unit off, plug in the heater, and turn the unit back on again.
3.
Set the setpoint a few degrees above the present process temperature so that
output power will be applied.
Verify that:
a.
LED #1 illuminates or begins to flash intermittently, indicating
heater output is activated, and
b.
The temperature begins to rise.
4.
If the system temperature does not begin rising, shut off power and
investigate sensor and heater connections and integrity. If the circuit
breaker trips, or any errors are displayed, refer to the
Error Messages and
Troubleshooting
section of this manual.
7. Autotune the system
DO NOT RUN AUTOTUNE
on any heater with this
unit without first consulting the Factory. Autotuning
will allow the power supply to apply its maximum
voltage to the load. This may seriously damage the
heater. PLA and PLB power limit setting will be
ignored during Autotune.