Manual switch condition

The module has an input for the manual switch condition MSC.

The user can configure two types of manual operator switches:


Depending on the ManSwCond input the PlantMode will take the values as shown in the next table


ManSwCond input value

PlantMode coded signal

EffManSwCond

EffManSwCond_MSt

1 = off

0 = off

0 = off

1 = off

2 = stage 1

4 = auto

1 = stage 1

2 = stage 1

3 = stage 2

4 = auto

2 = stage 2

3 = stage 2

4 = auto

value, according to the actual situation

3 = auto

4 = auto


The outputs EffManSwCond and EffManSwCond_MSt contain the prioritized states of the time schedule the external override and the wall module override. These outputs shall be connected to other macros with manual switch condition inputs like fans:


ManSwCond input value

EffManSwCond

EffManSwCond_MSt

1 = off

0 = off

1 = off

2 = stage 1

1 = stage 1

2 = stage 1

3 = stage 2

2 = stage 2

3 = stage 2

4 = auto

3 = auto

4 = auto


Attention: We recommend to user the wall module macro "RSA_AHUManSwitchNordic": If you use a wall module macro of the library "General", and want to connect it to the input "ManSwCond", you have to add the constant "1" to that signal before.


Extended operation

For extended operation you can connect a push-button or a timer to the input "DayExtension" to extend the air handling unit runtime.

If you connect a push-button, you can set the extended operation period with the parameter DEX-01

If you connect an external timer switch, you should set DEX-01 to the value „0“.


As long as the input "DayExtension" is true (= 1) the output "PlantMode" will have a value of “5”, the same value as for the manual switch of a wall module.


Description

Default value

SYS-01: manual switch configuration:

0 = service switch
1 = customer switch

1

DEX-01: extended operation time

60 min