SKG Steam Humidifier
BACnet® Communication Module User Guide
8
SKG Humidifier Object Table
The SKG Humidifier use the following BACnet object table. The
type
is the BACnet Object type, the
instance
is
the BACnet Object instance.
W?
indicates whether the Present_Value property is writable. Together the
type
and
instance
form the BACnet Object_Identifier for an object according to the following C-language algorithm:
•
object_identifier=(unsigned
long)((unsigned long)type<<22)+instance
Object instances are assigned according to the following scheme:
•
The Object instance for the Device Object is 153000 by default. This value can be reprogrammed from
between 0 and 4194302 as needed to insure uniqueness system-wide
•
For the Properties that are Common for all SKG Models, the Object instances range from 1 to 99 as
needed.
•
For the Tank Properties, the Object instances range from 101 to 199 for Tank 1, 201 to 299 for Tank 2,
301 to 399 for Tank 3 and 401 to 499 for Tank 4 as needed.
Common for all SKG Models:
type inst Object_Name
Description
range of Present_Value
W?
AI
1
Humidity_Out
Humidity Output
0-100 %RH
type inst Object_Name
Description
range of Present_Value
W?
AV
1
Humidity_Demand
Humidity Demand
0-100 %RH
W
AV 2 Room_Humidity
Room
Humidity
0-100
%RH
W
AV
3
Room_Humidity_Off
Room Humidity offset
±0-10.0 %RH
W
AV
4
Duct_Humidity
Duct Humidity
0-100 %RH
W
AV
5
Duct_Humidity_Off
Duct Humidity offset
±0-10.0 %RH
W
AV
6
Outside_Temp
Outside Temperature
-40 - 40 °C or -40 - 104
°F
W
AV 7 Lock_On_Capacity
Lock
On
capacity
10-100%
W
AV
8
Max_Output_Limit
Maximum output limit
10-100%
W
AV
9
Drain_Delay
Drain Delay
1-100Hrs
W
AV 10 Service_Delay
Service
Delay
1-5000Hrs
W
AV
11
End_Season_Delay
End of season delay
1-250Hrs
W
AV
12
PID_Loop_KP
PID Loop gain KP
0-255
W
AV
13
PID_Loop_KI
PID Loop gain KI
0-255
W
AV
14
PID_Loop_KD
PID Loop gain KD
0-255
W
AV 15 Ctl_Band
Control
band
0-20.0% (0..200)
W
AV
16
Ctl_SP
Control set point
0-100%RH
W
AV
17
Extern_SP_Min
External setpoint minimum
0-100%RH
W
AV 18 Extern_SP_Max
External
setpoint
maximum
0-100%RH W
AV
19
Duct_Hum_HiLim_SP
Duct hum. high limit set
point
50-100%RH W
AV
20
Min_ON_Time_Fan
Minimum ON time for fan
2-20 minutes
W
AV
21
Min_H2O_Temp
Min. water temp. in ON
mode
50-90 °C or 122-194 °F
(0 -> Mode is Off)
W
AV 22 Antifreeze_Temp
Anti-freeze
mode
temperature
7-12 °C or 44-54 °F (0 ->
Mode is Off)
W
AV
23
Analog_Ctl_In_Lo
Analog Control input Lo
Limit
0-10.00VDC W
AV
24
Analog_Ctl_In_Hi
Analog Control input Hi
Limit
0-10.00VDC W
AV
25
Analog_Hum_In_Lo
Analog Humidity input Lo
Limit
0-10.00VDC W
AV
26
Analog_Hum_In_Hi
Analog Humidity input Hi
Limit
0-10.00VDC W
AV 27 Analog_Duct_In_Lo Analog
Duct input Lo Limit
0-10.00VDC
W
AV 28 Analog_Duct_In_Hi
Analog
Duct input Hi Limit
0-10.00VDC
W
