Digital Inputs Polarity; Use Of The Programming Hot Key; Download (From The Hotkey To The Device) - Emerson XM670K Installing And Operating Instructions

14.9. FHU – Not Used
This function allows to change the kind of regulation from cooling to heating and vice versa.
14.10. Energy Saving Input (ES)
The Energy Saving function allows to change the setpoint value as the result of the SET+ HES (parameter) sum. This function is
enabled until the digital input is activated.
14.11. Map Switching (NT)
In this configuration, the digital input activates the map selected by the MP1 parameter. The "MAP CHANGE" MODBUS
command has higher priority compared to the digital input.
14.12. Cleaning Function Activation (CLN)
In this configuration, the digital input activates the CLEANING function. It can be activated only if the device is ON.
This function has the following characteristics:
• The display visualizes the "CLn" label.
• The light status depends on the LCL parameter (No/Yes), however the light can be modified both via button and MODBUS
command.
• The fans status depends on the FCL parameter (No/Yes), furthermore they are not thermo-regulated (par.FST).
The "CLEANING MODE" MODBUS command has higher priority compared to the digital input.
14.13. Defrost End (DEN)
The digital input ends the defrost cycle in progress. The drip time will follow the defrost end. A further defrost request with the
digital input active will not be managed.

14.14. Digital Inputs Polarity

The digital inputs polarity depends on "I#P" parameters: CL: the digital input is activated by closing the contact; OP: the digital
input is activated by opening the contact.

15 Use of the Programming Hot Key

15.1. Download (From the Hotkey to the Device)

1. Turn OFF the controller by pressing the on/off button
5-pin connector labeled HOT-KEY, and then turn the controller back ON by pressing the on/off button again for five (5)
seconds. The normal temperature value will display to indicate the controller is ON.
2. The parameter list of the Hot Key is downloaded into the controller memory automatically and doL will display. After 10
seconds, the controller will start working with the new parameters.
Document Part # 026-4280 Rev 1
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XM controllers can download or upload the parameter list from
its own non-volatile internal memory to the Hot Key and
vice-versa through a TTL connector.
Figure 15-1 - Hot Key
for five (5) seconds. OFF will display. Insert the Hot Key into the
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