Features and benefits - PENN Controls - LIT-1900935 - A421ABD - A421AED - Electronic Temperature Control - A421 Series Electronic Temperature Control
A421 Series Electronic Temperature Controls with Off-Cycle Defrost Catalog Page
- Product
- Controls > Electromechanical Temperature Controls > A421 Series Electronic Temperature Control
- Document type
- Catalog Page
- Document number
- LIT-1900935
- Revision date
- 2020-04-14
- Control front panel LCD
- Displays the temperature, parameters, and status. You can adjust the backlight intensity for
ambient light conditions. Custom icons display the
system and control status.
- Basic and Advanced programming menu
- Provides two levels of parameter adjustment and control. You can set up advanced features in one
menu and adjust basic parameters in the other
menu.
- Off-Cycle defrost
- Shut off the refrigeration system for defined defrost time interval and frequency. You can also
start or stop a manual only defrost
off-cycle.
- On/Off temperature adjustment
- Select the temperature values at which the relay turns on and off and automatically define the
mode of operation.
- Switch-activated temperature setback
- Shift the On/Off temperature by an adjustable setback. When a user-supplied switch closes the
binary input control circuit, temperature setback
is enabled.
- Adjustable anti-short cycle delay (ASd)
- Select the minimum time the output relay remains off before the next on-cycle. By selecting this
minimal time, you can avoid short cycling, hard
starts, and nuisance overload outages on
compressors and other inductive applications.
- Adjustable sensor offset
- Adjust the displayed temperature to the actual sensed temperature.
- Optional restricted adjustment mode
- Restrict the On/Off adjustment to your defined temperature range.
- Sensor failure mode
- Run the control continuously in the event of a sensor or sensor wire failure or to shut it
down.
- Backlight brightness level
- Adjust the brightness of the backlighting of the LCD screen. The backlight brightness level is
applied during normal operation. When you set up
or adjust the parameters, the LCD automatically
goes to the brightest level.