Q.2.43 April 2018
Page 11
© Copyright 2018 KE2 Therm Solutions, Inc., Washington, Missouri 63090
KE2 Compressor
Sequencer
Quick Start Guide
Digital Inputs Sequence
Digital Input mode: Sets Digital Input Function
(Complete
Mode
descriptions on the table below)
Disabled
HG Def Required
2nd temp setpoint
2nd suction pressure set point
compressor module
oil safety switch
high pressure safety switch
system off
Digital Input Active State: Sets whether the Digital Input performs
the selected function (Digital Input Mode) when the input receives an
open or shorted signal.
Descriptions of Digital Input Mode Options
Disabled
• Digital input is nonfunctional.
Hot gas Defrost
Required
• If the Digital Input receives an Inactive signal the controller will de-energize the relay selected as Hot Gas Defrost
Relay.
• If the Digital input receives an Active signal the controller will energize the relay selected as Hot Gas Defrost Relay.
2nd Temp setpoint
• If the Digital Input receives an Inactive signal the controller will control to Suction Pressure setpoint.
• If the Digital input receives an Active signal the controller will control to 2nd Suction Pressure set point.
2nd suction
pressure Setpoint
• If the Digital Input receives an Inactive signal the compressor module is running normally.
• If Digital Input is receiving an Active signal a compressor module is tripped with an alarm. The Amber LED will be
illuminated, and an e-mail will be sent.
• If multiple digital inputs are selected for compressor module, any compressor module input will control in manner
described above.
Compressor module
• If the Digital Input receives an Inactive signal the compressor module is running normally.
• If Digital Input is receiving an Active signal a compressor module is tripped with an alarm. The Amber LED will be
illuminated, and an e-mail will be sent.
• If multiple digital inputs are selected for compressor module, any compressor module input will control in manner
described above
Oil Safety Switch
• If the Digital Input receives an Inactive signal the oil safety switch normal.
• If Digital Input is receiving an Active signal the oil safety switch is tripped with an alarm. The Amber LED will be
illuminated, and an e-mail will be sent.
• If multiple digital inputs are selected for Oil Safety Switch, any Oil Safety Switch input will control in manner de-
scribed above.
High Pressure
Safety Switch
• If the Digital Input receives an Inactive signal the High Pressure safety switch is running normally.
• If Digital Input is receiving an Active signal the High Pressure Safety Switch is in alarm. The Amber LED will be il-
luminated and an e-mail will be sent.
• If multiple digital inputs are selected for High Pressure Safety Switch, any High Pressure Safety Switch input will
control in manner described above.
System Off
• If the Digital Input receives an Inactive signal operate system normally.
• If Digital Input is receiving an Active signal the controller will go to System Off Mode.
There are 3 Digital Inputs available. Each has 2 setpoints needed to configure its functionality.
