User Manual

Overview
I/O Mix (Relay Assignment Matrix)
8
Siemens Industry, Inc.
Application Note, App 14900
140-1231
2020-02-11
Configurable outputs can be configured to the following types:
1 = Humidification
2 = Dehumidification
3 = Occupied
4 = Air Quality
5 = Economizer Enable
6 = Not Used
I/O Mix (Relay Assignment Matrix)
In a conventional RTU application, the maximum number of compressors is three, with
up to three stages of heat. The number of stages can be configured using the BACnet
points HeatStg and CoolStg.
Heating
Stages
Cooling
Stages
Y1
Y2
W1
W2
O/B
OUT1
(AuxOut1)
0
1
Stage 1
Cooling
N/A
N/A
N/A
N/A
N/A
0
2
Stage 1
Cooling
Stage 2
Cooling
N/A
N/A
N/A
N/A
0
3
Stage 1
Cooling
Stage 2
Cooling
N/A
N/A
Stage 3
Cooling
N/A
1
0
N/A
N/A
Stage 1
Heating
N/A
N/A
N/A
1
1
Stage 1
Cooling
N/A
Stage 1
Heating
N/A
N/A
N/A
1
2
Stage 1
Cooling
Stage 2
Cooling
Stage 1
Heating
N/A
N/A
N/A
1
3
Stage 1
Cooling
Stage 2
Cooling
Stage 1
Heating
N/A
Stage 3
Cooling
N/A
2
0
N/A
N/A
Stage 1
Heating
Stage 2
Heating
N/A
N/A
2
1
Stage 1
Cooling
N/A
Stage 1
Heating
Stage 2
Heating
N/A
N/A
2
2
Stage 1
Cooling
Stage 2
Cooling
Stage 1
Heating
Stage 2
Heating
N/A
N/A
2
3
Stage 1
Cooling
Stage 2
Cooling
Stage 1
Heating
Stage 2
Heating
Stage 3
Cooling
N/A
3
0
N/A
N/A
Stage 1
Heating
Stage 2
Heating
Stage 3
Heating
N/A
3
1
Stage 1
Cooling
N/A
Stage 1
Heating
Stage 2
Heating
Stage 3
Heating
N/A
3
2
Stage 1
Cooling
Stage 2
Cooling
Stage 1
Heating
Stage 2
Heating
Stage 3
Heating
N/A