Description Of Features; Basic Parameter Control; The 'Lock' Input; Energy Save Modes - Mitsubishi Electric Procon IO-INTERFACE Installation Manual

6. Description of Features

6.1. Basic Parameter Control

The unit has a digital input for control of On/Off and three analogue inputs for control of Setpoint, Mode and Fan
Speed.
A change to any of these inputs will be transmitted to the air conditioner.
The analogue inputs work in bands. For details of the required voltages see Appendix A.

6.2. The 'Lock' Input

Normally the parameters are only transmitted to the associated unit on change. If the 'Lock' digital input is active then
the parameter values will be transmitted approximately every 5 seconds thus overriding any changes which may have
been made from other sources.
It is possible to select which parameters are 'locked' using bit switch SW1.
Each of the 4 switches on this bank controls one of the parameters and if ON will result in that parameter being
'locked'.
For bit switch information see Appendix B.

6.3. Energy Save Modes

When using energy save features, it is important to use a remote sensor (PAC-SE41TS) or the remote
controller sensor to accurately read the room temperature.
The unit offers two energy save modes:

6.3.1. Auto/Fan

Auto/Fan is selected by setting bit switch SW2-1 to OFF and setting either or both of bit switches SW2-2 and SW2-3
ON.
In this mode the unit will put the air conditioner into AUTO whenever a momentary signal is applied to the 'Energy
Save' input or whenever the on/off state is changed from OFF to ON.
The unit will operate in AUTO for a fixed period set by bit switches SW2-2 and SW2-3 after which it will revert to the
mode as requested on the mode analogue input (no connection to this input will give FAN).
The AUTO period may be re-initialised at any time.
For bit switch information see Appendix B.
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