Instruction manual

4948
Limit Contro l l e r
Option ED
Operation (continued)
Quick Start Procedure
1) Apply power to the controller.
2) Press parameter access key to access the menu system.
3) Using the up/down arrow keys, select menu level “04”.
4) Press the parameter access key once until you reach the
sensor type (IntP).
5) Select the sensor type that you will be using by pressing
the up/down arrow keys (refer to parameter descriptions
for menu “04” described earlier).
6) Press the parameter access key again to reach the limit
type (LItP).
7) Using the up/down arrows keys, select High or Low limit.
8) Press the mode key to return to limit setting.
9) Set your limit to the desired value by pressing the
up/down arrow keys.
10) To deny controller access through the front panel, press
the parameter access key once, then using the up/down
arrow keys, select menu level “00”. Press the mode key
once. The controller is now in lockout mode. To regain
controller access you must hold the parameter access key
in for 11 seconds.
Warning: Do not
change the values in
the CALLor CALH
menu parameters.
If this is done, the
controller may need
to be recalibrated.
Tech Tip: After setting
up your controller,
index through the
entire menu system
and write down the
value or setting of each
menu parameter. Keep
this hard copy on hand
in the event that an
operator accidently
changes the values or
settings. Then you can
refer back to this list of
settings and values to
correctly set up the
controller.
Limit Contro l l e r
Option ED
Operation
High Limit Operation — During normal operation the
mechanical relay in output “1” is closed. If the process
temperature exceeds the high limit setting, then the
mechanical relay in output “1” will open (“01” LED is
now lit) cutting off power to the load. When the process
temperature drops back down to below the limit setting,
output “1” will remain open until you press the mode key
to reset the controller.
Low Limit Operation — During normal operation the
mechanical relay in output “1” is closed. If the process
temperature drops below the low limit setting, then the
mechanical relay in output “1” will open (“01” LED is
now lit) cutting off power to the load. When the process
temperature rises back above the limit setting, output “1”
will remain open until you press the mode key to reset
the controller.
Mode Key (Reset Button) — Operates as a reset button.
The Parameter Access Key — Used to index through
parameters or to access menu levels.
Raise Key — Used to scroll up through available parameter
settings, increase values or change menu levels (Hold for
fast-step progression).
Lower Key — Used to scroll down through available
parameter settings, decrease values or change menu levels
(Hold for fast-step progression).