Omega Engineering RHCN-7000 - Manual (Page 2)

Copyright 2011 Omega Engineering, Inc. M - 4644 / 7/11 FR# R7-443649-00 Rev. 2
PARAMETERS
SP
r0
r1
r2
d0
c0
c1
lc
Hc
P1
P5
H5
Description
Set Point
Differential or Hysteresis
Low Value Set Point
Higher Value Set Point
Heating or Cooling Control
Min. stop time for Load
Continuous Cycle Time
HR Value for 4 mA Input
HR Value for 20 mA Input
Probe Adjustment (shifting)
Probe Type
Parameter Access code Units
%
%
%
%
Option
Minutes
Hours
%
%
%
Range
Numeric Range
r1 to r2
1 to 99
0 to r2
r1 to 100
Hu/dH
0 to 59 min.
0 to 24 hrs
0 to 100
50 to 100
0 to 10
0-1 V, 0-3 V, 4-20 mA
0 to 99
(SET AT 0 FROM
FACTORY)
PARAMETERS DESCRIPTION
SP = Set Point - Desired Regulation Temperature
r0
= Differential or Hysteresis
r1 = Lower Set Point Limit
r2 = Higher Set Point Limit
d0 = Humidifying / Dehumidifying Control -
Humidifying: To choose Humidifying Control: Set d0 = Hu.
The output is activated when the relative humidity is less than
the Set Point (SP) - r0 and disconnected if the relative humidity is
> = SP.
Dehumidifying: To choose Dehumidifying Control: Set d0 = dH.
The output is activated when the relative humidity is > SP + r0
and disconnected when the relative humidity is < = SP.
c0 = Minimum Times Between Start and Stop.
c1 = Continuous Cycle Time. The time the load is connected when
a continuous cycle is activated. To view the programmed cycle
time for display, press the down arrow button for 8 seconds. The
display with blink as indicated. The output will be connected
during the number of hours indicated by the c) parameter. To
cancel the Continuous cycle, press and hold the down arrow
button again for 8 seconds.
lc = RH value for 4 mA input. Parameters for use with 4 to 20 mA
output probe.
Hc = RH value for 20 mA input. Parameters for use with 4 to 20 mA
output probe.
P1 = Probe Adjustment. Offset degrees to adjust probe. If the probe
is not placed in the exact point that is to be measured, use a
standard hygrometer and adjust the difference with this
parameter.
P5 = Probe Type. (Set from the factory.) DO NOT ADJUST.
H5 = Access to Probe Parameters. (The code is set to 0 from the
factory.)
PARAMETER PROGRAMMING
Set Point (SP) is the only parameter the user can access without code
protection.
• Press SET. SP text will appear on the display.
• Press SET again. The real value is shown on the display.
• The value can be modified with the uP and DOWN arrows.
• Press SET to enter any new values.
• Press SET and DOWN at the same time to quit programming or wait one
minute and the display with automatically exit programming mode.
* The keyboard code can be reset to ZERO by turning off the controller
and turning it on again while keeping the SET key depressed.
Access to all code protected parameters.
• Press SET for 8 seconds. The access code value 00 is shown on the
display. (unit comes with code set at 00 from factory).
• With the uP and DOWN arrows, code can be set to user needs.
• Press SET to enter the code. If code is correct, the first parameter label
is shown on the display (SP).
• Move to the desired parameter with the uP and DOWN keys.
• Press SET to view the value on the display.
• The value can be modified with the uP and DOWN arrows.
• Press SET to enter the value and exit to text parameter.
• Repeat until all necessary parameters are modified.
• Press SET and DOWN at the same time to quit programming or wait one
minute and the display will automatically exit programming mode.
lED INDICATIONS
OUT This indicates the load is connected. The system waits for the
programmed minimum stop time of the load.
DISPlAY MESSAGES
In normal operation, the humidity will be shown on the display. In case of
alarm or error, the following messages will be shown:
ER = Memory Error
-- = Short-Circuit Probe Error
oo = Open Probe Error
In the event an error occurs, the unit follows a fixed working cycle which
connects the load for 5 minutes and then disconnects the load for 5 min-
utes alternately.
MAINTENANCE / REPAIR
upon final installation of the Series RHCN-7000 Digital Humidity Switch,
no routine maintenance is required. A periodic check of system
calibration is recommended. The devices are not field repairable and
should be returned to the factory if recalibration or other services is
required. After fir obtaining a Returned Goods Authorization (RGA)
number, end the material, freight prepaid, to the following address.
Please include a clear description of the problem plus any application
information available.
Omega Engineering
Attn: Repair Department
One Omega Drive
Stamford, CT 06907
OMEGA ENGINEERING, INC.
One Omega Drive
PO Box 4047
Stamford, CT 06907
PH: 1 - 203 - 359 - 1660
H-RHCN-7000_TEMPLATE 7/25/11 8:55 AM Page 2