Feature
Notes
Configuration Tables Wiring    

Air Handing Unit Humidity Submodule

with 3 x Triac Outputs (3T version)
with 2 x 0-10V DC Outputs (AOP version)

Configuration Tables

Doorway / InSite Code

Label

Description

Units

Default Value

Range

C1
SPRH
Occupied setpoint
%RH
50
0 to 100
C2
SPMD
Midpoint of setpoint adjustment range
%
50
10 to 90
C3
SPRG
Range of setpoint adjustment about midpoint
%
20
0 to 40
C4
SPDB
Setpoint deadband between humidification and de_humidification setpoints. If zero disables de-hum
%
10
0 to 20
C5
RDLY
Recirculation delay , for use with evaporative coolers on Dessicant Plant;
hours of continuous running before water recircualtion is allowed
Hours
2
0 to 10
C6
HPRD
Minimum on time for humidifier stages
Secs/10
 
1 to 60
C7
HDLY
Not used in this application
Mins
0
-30 to 30
C8
CPRD
Not used in this application
Secs/10
 
1 to 60
C9
CDLY
Not used in this application
Mins
0
-30 to 30
C10
FPRD
Not used in this application
Secs/10
12
1 to 60
C11
MIND
Minimum demand
%
4
0 to 100
C12
MANL
Manual level , from Doorway
%
0
-100 to 100
C13
ALRM
Alarm mode
0 ignore alarms
1 report alarms
2 report alarms, shut down all outputs on alarm
3 report alarms, shut down all outputs on STOP alarm or sensor fail alarm
-
1
0 to 3
C14
ALST
Not used in this application
-
0
0 to 1
C15
CMDE
Control mode
0 driver only mode
1 closed loop control of humidity
2 closed loop control of Humidity and DeHum (see Close Control for setup details)
-
0
0 to 2
C16
MXSH
Maximum Supply Humidity setpoint
%RH
60
0 to 100
C17
MNSH
Minimum Supply Humidity setpoint
%RH
40
0 to 100
C18
DHOF
Supply DeHum setpoint offset
%RH
2
0 to 10
 
 
Engineering Parameters for advanced applications: contact SeaChange for further details
 
 
 
C19
TRGT
Target mean value for Humidifier control minimum output
%
10
3 to 100
C20
ICGN
InterCoil setpoint Gain (controls rate of adjustment)
-
10
1 to 255
C21
ICSP
InterCoil temperature setpoint for monitoring
Deg C
30
0 to 50
C22
ICLT
InterCoil temperature for monitoring
Deg C
-
0 to 50
C23
ICOP
InterCoil loop output for monitoring
%
-
0 to 100
C24
RTMD
Return Mode, provides extra control features when using cascade control
0 cascade control disabled
1 cascade control enabled (must have both Supply and return RH sensors)
2 cascade control enabled, return loop output locked if supply loop reaches 0 or 100% to prevent wind up.
-
0
0 to 2
C25
PROP
Proportional gain term for Humidity control loop
-
0
0 to 250
C26
MXVA
Maximum Voltage output a (for AOP types only)
V
10
0 to 10
C27
MNVA
Minimum Voltage output a (for AOP types only)
V
0
0 to 10
C28
MXVB
Maximum Voltage output b (for AOP types only)
V
10
0 to 10
C29
MNVB
Minimum Voltage output b (for AOP types only)
V
0
0 to 10

Monitoring Parameters

Doorway / InSite Code

Label

Description

Units

Default Value

Range

I2 (C31)
OCC
Occupied
-
-
0 to 1
I3 (C32)
OSRT
Optimim Start
-
-
0 to 1
I6 (C35)
RLYA
Triac A Status
-
-
0 to 1
I7 (C36)
RLYB
Triac B Status
-
-
0 to 1
I8 (C37)
RLYC
Triac C Status
-
-
0 to 1
W1 (C38)
AUTO
Automatic/Manual Status
-
-
0 to 1
W2 (C39)
OVRD
Override
-
-
0 to 1
W8 (C45)
CGST
Configuration mode
-
-
0 to 1
 
 
W1 and W2 used together with Doorway Auto/Manual dialog box
 
 
 
S1* (C50)
RTRH
Return Relative Humidity
%RH
-
0 to 100
S2* (C51)
SLRH
Supply Relative Humidity
%RH
-
0 to 100
S3 (C52)
DMND
Return Loop output
%
-
-100 to 100
S4 (C53)
RTSP
Return Humidity Setpoint
%RH
-
0 to 100
S5 (C54)
SLSP
Supply Humidity Setpoint
%RH
-
0 to 100
S6 (C55)
HDMD
Humidification output demand
%
-
0 to 100
S7 (C56)
CDMD
De-humudification output demand
%
-
0 to 100
S8 (C57)
RDMD
Recirculation demand
%
-
0 to 100
S9 (C58)
HTIP
Heat demand from AHU
%
-
0 to 100
S10 (C59)
CLIP
Cool demand from AHU
%
-
0 to 100
K1 (C60)
SPRH
Occupied setpoint
%RH
50
0 to 100
   
* 24 hour plots available for these values by default
     
   
Plotting interval and plotted variable changeable via Doorway or InSite
     
SC Controls Ltd
PO Box313
Wadhurst
East Sussex
TN5 6JL
phone 08707 606040
fax 08707 606041
e-mail seachange@sccontrols.co.uk
http:// www.seachange.co.uk