| Вид документа | Бюлетень виробу |
|---|---|
| Виробник | JCI |
| Код документа | system-350-w351-electrical-on-off-humidity-control |
| Група обладнання | W351 Humidity Control |
| Сторінок | 12 |
| Мова документа | англійська |
| Розмір файлу | 0.2 МБ |
Текст документа
Product/Technical Bulletin W351
Issue Date May 31, 2014
PRODUCT/TECHNICAL BULLETIN
System 350 W351 Electrical On/Off Humidity Control
The W351 Electronic Humidity Control is an On/Off
humidity control. The control output is a Single-Pole,
Double-Throw (SPDT) relay with LED indication. It
features humidification and dehumidification modes of
operation and an adjustable differential.
The W351 control is designed to work with an
HE-67S3-0N0BT Room Sensor Humidity Transmitter
or HE-67S3-0N00P Duct Sensor Humidity Transmitter.
As with all System 350 products, the W351 control
housing is a compact NEMA 1, high-impact plastic
enclosure. The modular design provides easy,
plug-together connections for quick installation and
future expandability.
Figure 1: W351 Electronic On/Off Humidity Control
Features and Benefits
Modular Design Provides the flexibility to add up to five S351
Humidity Stage Modules (nine with a 24 VAC
transformer), a D351 Humidity Display
Module, and a Y350R Power Module
Plug-together Connectors Eliminates wiring between modules and
and 35 mm DIN Rail reduces installation costs
Mounting
Adjustable Setpoint Range Reduces inventory by covering the humidity
of 10-90% RH range required to support most humidity
applications
Wide Adjustable Differential Enables the user to match the equipment
of 2-10% RH cycle rate and sequencing for a given
application
Humidification or Works in a variety of humidification or
Dehumidification Modes of dehumidification applications
Operation
Interchangeable Humidity Increases versatility and serviceability
Transmitters
© 2014 Johnson Controls, Inc. 1
Part No. 24-7664-36, Rev. D www.johnsoncontrols.com
Code No. LIT-930060
• HE-67S3-0N0BT Wall Mount or HE-67S3-0N00P
A pplication Duct Mount Humidity Transmitter
IMPORTANT: Use this System 350 W351
Electronic On/Off Humidity Control only to control O peration
equipment under normal operating conditions. Where The W351 control has an external range scale and
failure or malfunction of the W351 control could lead setpoint dial, a front panel LED indicating when the
to personal injury or property damage to the relay is energized, and a SPDT relay output.
controlled equipment or other property, additional (See Figure 2.) Features include:
precautions must be designed into the control
system. Incorporate and maintain other devices, such • adjustable setpoint
as supervisory or alarm systems or safety or limit
controls, intended to warn of or protect against failure • adjustable differential
or malfunction of the W351 control. • selectable mode of operation
(humidification/dehumidification)
IMPORTANT : Utiliser ce System 350 W351
Electronic On/Off Humidity Control uniquement pour
commander des équipements dans des conditions Setpoint Adjustment
normales de fonctionnement. Lorsqu'une défaillance
ou un dysfonctionnement du W351 control risque de Setpoint is the % RH at which the relay de-energizes.
provoquer des blessures ou d'endommager With the operation mode jumpers in either the
l'équipement contrôlé ou un autre équipement, la humidification or dehumidification position, the relay
conception du système de contrôle doit intégrer des de-energizes when the % RH at the transmitter
dispositifs de protection supplémentaires. Veiller dans reaches the setpoint.
ce cas à intégrer de façon permanente d'autres
dispositifs, tels que des systèmes de supervision ou Differential Adjustment
d'alarme, ou des dispositifs de sécurité ou de
limitation, ayant une fonction d'avertissement ou de Differential is the change in % RH at the transmitter
protection en cas de défaillance ou de required to energize and de-energize the relay. The
dysfonctionnement du W351 control. differential is adjustable between 2-10% RH.
Setpoint Dial
The W351 Electronic On/Off Humidity Control can be
used as a standalone device or in conjunction with Mode of
System 350 Add-On Modules to control a wide variety Differential Operation
J1 Jumper Positions:
of single or multiple stage humidity applications. Potentiometer
Typical W351 control applications include humidity Dehumidification
control for:
Humidification
• clean rooms
• computer rooms
• pharmaceutical manufacturing
• fruit storage/ripening
Figure 2: W351 Electronic On/Off Humidity
• indoor swimming pools
Control; Setpoint and Differential Adjustments;
• greenhouses Humidification and Dehumidification Modes
A typical System 350 Humidity Control scheme
includes the following:
Mode of Operation
• W351 Humidity Control
When the dehumidification mode is selected, the
• up to five S351 Humidity Stage Modules differential is above the setpoint. When the humidity
rises to the setpoint plus the differential setting, the
• D351 Digital Humidity Display Module
relay energizes and the LED lights. When the humidity
• Y350R Power Module (or 24 VAC transformer) drops to the setpoint, the relay and LED indicator
de-energize. (See Figure 3.)
2 System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin
When the humidification mode is selected, the
differential is below the setpoint. When the humidity
drops to the setpoint minus the differential setting, the
D imensions
relay energizes and the LED lights. When the humidity 1/8 1/2
(4) (13)
rises to the setpoint, the relay and LED indicator
de-energize. (See Figure 3.)
2-15/16 5 W351
(75) (127) ON
(+) 4
(102)
Dehumidification
On
On = Relay & LED Energized 1-9/16 3/8 2-3/8
DIN Rail
Off = Relay & LED De-energized (40) (11) (61)
Differential Mount 1-3/16
Mounting Slot (31)
Setpoint Off for No. 6 Screws
Relative
Humidity Off
3
2-3/8
Differential (76)
(61)
On 7/8
1/2 in.
(22) Trade Size
Humidification
Conduit Hole
(-)
Figure 4: W351 Control Dimensions, in./mm
Figure 3: Modes of Operation
M ounting
The W351 Electronic Humidity Control housing is a
compact NEMA 1 plastic enclosure designed for
standard 35 mm DIN rail mounting. Four key-slot
mounting holes on the back of the control case are
provided for surface mounting.
The W351 control is not position sensitive but should
be mounted for convenient wiring and adjustment.
Note: When mounting the W351 control (or any
System 350 module) to rigid conduit, attach
the hub to the conduit before securing the hub
to the control enclosure.
System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin 3
! WARNING: Risk of Electric Shock. W iring
Disconnect or isolate all power supplies Install all wiring to conform to the National Electrical
before making electrical connections. More Code and to local regulations. For maximum electrical
than one disconnection or isolation may be rating of control, refer to the label inside the control
required to completely de-energize cover. Use only copper conductors.
equipment. Contact with components
carrying hazardous voltage can cause See Figures 5 and 6 for proper wiring and terminal
electric shock and may result in severe designations.
personal injury or death.
AVERTISSEMENT : Risque de décharge Transmitter Wiring
électrique.
The W351 Humidity Control uses an HE-67S3-0N0BT
Débrancher ou isoler toute alimentation
or HE-67S3-0N00P Humidity Transmitter, which is
avant de réaliser un branchement électrique.
powered by the 12 VDC power supply from the W351
Plusieurs isolations et débranchements sont
control. See TRUERH Series HE-67xx Humidity
peut-être nécessaires pour -couper
Element with Temperature Sensor Installation
entièrement l'alimentation de l'équipement.
Instructions (Part No. 24-9527-7 Rev. A) for more
Tout contact avec des composants
conducteurs de tensions dangereuses risque information.
d'entraîner une décharge électrique et de
provoquer des blessures graves, voire Connect the transmitter to the W351 control at the
mortelles. four-conductor screw terminal block, located at the
upper left of the circuit board. (See Figures 5 and 6.)
Note: Set the output jumpers on the
HE-67S3-0N0BT and HE-67S3-0N00P
humidity transmitters for 0 to 10 VDC output.
Shielded cable is not generally required for transmitter
wiring on runs of less than 50 feet. When using
shielded cable, isolate and tape the shield at the
transmitter. Connect the shield to the Communications
Port (COM) terminal on the W351 control.
The maximum recommended length of 22 AWG 3-wire
shielded transmitter cable is 250 feet (76 meters).
4 System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin
HE-67S3-0N00P HE-67S3-0N00P
Duct Mount Humidity Transmitter Wall Mount Humidity Transmitter
0 to 10 PWR 0 to 10
COM
VDC OUT VDC Humidity Transmitter
PWR
COM
PWR
OUT COM
OUT
W351 Y350R S351 S351 D351
Humidity Control Power Module Stage Module Stage Module Display Module
J1
24V
COM
VDC
SEN
120 VAC
Load Load Load
Figure 5: W351 Humidity Control (Dehumidification Mode) Powered by an External Transformer
with the Humidity Transmitter Less Than 50 Feet from the W351 Control
System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin 5
HE-67S3-0N00P HE-67S3-0N00P
Duct Mount Humidity Transmitter Wall Mount Humidity Transmitter
0 to 10 PWR 0 to 10
COM VDC Humidity Transmitter
VDC OUT
PWR
COM PWR
OUT COM
OUT
Isolate and Tape
Shield
W351 Y350R S351 S351 D351
Humidity Control Power Module Stage Module Stage Module Display Module
24V
COM
VDC
SEN
120 VAC
Load Load Load
Figure 6: System 350 Modules Powered by a Y350R Power Module
with the Humidity Transmitter 50-250 Feet from the W351 Control
A dd-On Modules
The S351 Stage Modules, D351 Digital Humidity See System 350 S350A Temperature, S351A
Display Modules, and Y350R Power Modules plug Humidity, and S352A Pressure Stage Modules
together and connect to the W351 Electronic Humidity Product/Technical Bulletin (LIT-930080) for more
Control via connectors on the sides of each add-on information.
module. The recommended order of the modules is
shown in Figures 5 and 6.
D351 Digital Humidity Display Module
S351 Humidity Stage Modules The D351 Display Module receives its power, sensor,
and setpoint information from the W351 control. A
The S351 Stage Modules receive their power, 3-digit Liquid Crystal Display (LCD) gives a continuous
setpoint, and sensor input from the W351 Electronic display of the sensed humidity. Press the button to
Humidity Control. display the setpoint of the adjoining W351 control. See
When using a Y350R module, up to five additional System 350 Display Modules Product/Technical
S351 Stage Modules can be plugged into a W351 Bulletin (LIT-930070) for more information.
Humidity Control. When using an external 24 VAC
(40 VA minimum) transformer, up to nine additional
S351 Stage Modules can be plugged in.
6 System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin
Y350R Power Module 3. Adjust the differential by rotating the differential
potentiometer to the desired setting.
The Y350R Power Module provides a convenient (See Figure 2.) Rotate the potentiometer
method of powering System 350 modules from a clockwise to increase the differential.
120 or 240 VAC power source.
4. Replace the cover, tighten the four captive cover
Plug the Y350R power module into the right side of the screws, and adjust the setpoint by rotating the
W351 Electronic Humidity Control. The Y350R power setpoint dial to the desired % RH setpoint.
supplies power for a W351 control, a D351 Display (See Figure 2.)
Module, and up to five S351 Stage Modules.
Note: Use the D351 Display Module for the most
See System 350 Power Module Product/Technical accurate setpoint selection.
Bulletin (LIT-930090) for more information.
If using the D351 Display Module, press
and hold the button on the D351 module
A djustments while rotating the setpoint dial.
! WARNING: Risk of Electric Shock.
S351 Stage Module
When the W351 control is used in conjunction with one
Do not touch any exposed metal parts with anything or more S351 modules, the following adjustments
other than properly insulated tools or insulated must be made to each S351 module. Additional
probes of the digital voltage meter. Failure to use information about adjusting the stage module is
properly insulated tools and probes may result in available in the S350 Temperature, S351 Humidity,
severe personal injury or death. and S352 Pressure Stage Modules Product/Technical
Bulletin (LIT-930080).
AVERTISSEMENT : Risque de décharge
électrique. 1. Remove the S351 module cover by loosening the
Ne jamais toucher une partie métallique exposée four captive cover screws.
avec tout élément autre que des outils correctement
2. Set the humidification/dehumidification operation
isolés ou les sondes isolées du voltmètre
mode jumpers to the desired mode of operation.
numérique. L'utilisation d'outils et de sondes
incorrectement isolés risque de provoquer des • Select dehumidification mode for offset and
blessures graves, voire mortelles. differential above setpoint.
(See Figures 7 and 8.)
• Select humidification mode for offset and
IMPORTANT: Verify that the humidification differential below setpoint.
dehumidification operation mode jumpers are in the (See Figures 7 and 8.)
proper position before powering System 350 3. Adjust the S351 stage module’s offset
components. If the operation mode jumpers on the potentiometer to the desired offset value. The
control or the staging modules are left in the wrong offset value is the difference in humidity from the
position, the device will activate the relay in W351 control module’s setpoint that is required for
response to the opposite signal. The humidifying or the S351 stage module’s relay to de-energize.
dehumidifying equipment may remain energized until (See Figures 7 and 8.)
the error is corrected.
W351 Control
1. Remove the W351 control cover by loosening the
four captive cover screws.
2. Position the jumpers on jumper block J1 vertically
for humidification, or horizontally for
dehumidification. (See Figure 2.) The jumpers are
factory-set for humidification.
System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin 7
4. Adjust the differential potentiometer to the desired
differential value. The differential value is the
difference in humidity from the offset that is
T roubleshooting
required for the S351 stage module’s relay to Before applying power, make sure installation and
energize. (See Figures 7 and 8.) wiring connections are according to job specifications.
5. Reinstall the cover onto the enclosure base and After making necessary adjustments and electrical
secure the cover to the enclosure base with the connections, put the system into operation and
four cover screws. observe at least three complete operating cycles
Setpoint Dial
before leaving the installation.
Mode of
Differential Operation
Checkout
J1 Jumper Positions:
Potentiometer
Dehumidification ! WARNING: Risk of Electric Shock.
Humidification Do not touch any exposed metal parts with
anything other than properly insulated tools
or insulated probes of the digital voltage
meter. Failure to use properly insulated tools
and probes may result in severe personal
Figure 7: S351 Stage Module Adjustment and injury or death.
Potentiometer Locations
AVERTISSEMENT : Risque de décharge
(+)
électrique.
On Ne jamais toucher une partie métallique
exposée avec tout élément autre que des
outils correctement isolés ou les sondes
On Differential On = Energized
Off = De-energized
isolées du voltmètre numérique. L'utilisation
d'outils et de sondes incorrectement isolés
Differential Off risque de provoquer des blessures graves,
Offset
Setpoint voire mortelles.
Relative
Off
Humidity
Offset If the control system does not function properly, verify
Off Offset
that the proper mode is selected on each module (e.g.,
Off humidification/dehumidification) and then use the
Differential following procedures to determine the cause of the
Differential problem:
On 1. Check for proper voltage applied to the
(-)
On W351 Humidity Control:
W351 S351 S351 S351 a. Connect a Digital Voltmeter (DVM) between
Humidity Stage Stage Stage
Control Module Module Module the 24 V (+) and COM (-) terminals located on
Stage 1 Stage 3
the W351 control’s left-side terminal block.
Stage 2 Stage 4
(See Figures 5 and 6.)
Dehumidify Humidify
• If an external transformer is used, select
AC volts on the DVM and verify that the
Figure 8: Typical Multistage
voltage is between 20-30 VAC.
Humidification/Dehumidification Application
• If a Y350R Power Module is used, select
DC volts on the DVM and verify that the
voltage is between 16-38 VDC.
b. Proceed to Step 2 if the DVM reading is within
the indicated voltage range.
c. If the DVM reading is not within the indicated
voltage range, check wiring, then replace the
8 System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin
Y350R power module or the external 10
transformer.
Transmitter
Table 1: W351 Control Relay Output
VDC
Troubleshooting
Mode of LED Normally Setpoint
5
Operation Status Open Relay Dial
Status Setting*
Humidify On Closed (RHT) +
differential
Humidify Off Open (RHT)
00
Dehumidify On Closed (RHT) - 50 100
differential
RHT Humidity (% RH)
Dehumidify Off Open (RHT)
* See Figure 9 for RHT vs. Humidity illustration. Figure 9: Transmitter Voltage vs. Humidity
2. Check humidity transmitter for proper output
voltage: 3. Check the W351 Electronic Humidity Control for
proper operation:
a. Disconnect the transmitter OUT wire from the
W351 control SEN terminal. Note: Perform Steps 1 and 2 first.
b. Take a humidity reading with a properly a. Adjust the setpoint dial to at least 20% RH
calibrated, accurate humidity measuring below the voltage conversion to % RH (RHT)
device. This reading is the actual humidity. as determined in Step 2.
c. Connect a DC voltmeter between the b. Increase the setpoint by slowly adjusting the
transmitter OUT wire and the control COM dial until the W351 control’s relay and LED
terminal. Using Figure 9, convert the voltage turn On and Off as shown in Table 1.
to % RH. This is the humidity reading at the c. If the relay performs as expected, continue to
transmitter (RHT). Step 4.
Note: A transmitter output of 0-10 VDC d. If the relay does not perform as indicated in
should correspond to a humidity of Table 1, replace the W351 control.
0-100% RH (see Figure 9).
• If the RHT is close to the actual humidity,
proceed to Step 2d.
• If the RHT deviates substantially from the
actual humidity, replace the transmitter.
d. Reconnect the transmitter OUT wire to the
W351 control SEN terminal.
System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin 9
4. Check the S351 Stage Modules for proper 5. Check the D351 Display Module for proper
operation (if applicable): operation (if applicable):
Note: Perform Steps 1, 2, and 3 first. Note: Perform Steps 1 through 4 first.
IMPORTANT: There is a possibility that a a. Compare the voltage conversion to % RH at
defect in one stage module could cause defective the transmitter (RHT) (as determined in Step 2)
symptoms in all modules. Plug each S351 module with the display readout.
into the W351 control individually and check its b. If the D351 module does not read the correct
performance as outlined in Step 4. transmitter RH (RHT), replace the
D351 module.
a. Turn the setpoint dial on the W351 control to
10% RH (the extreme counterclockwise c. Press the button on the D351 module to
position). display the setpoint.
b. Increase the setpoint by slowly adjusting the d. If pressing the button results in an
dial until the S351 module’s relay and LED out-of-range reading (greater than 100% RH),
turn On and Off as shown in Table 2. replace the D351 module.
c. If the relay does not perform as indicated in e. If pressing the button results in a reading other
Table 2, adjust the S351 module’s differential than the expected setpoint value, check the
and offset potentiometers to their minimum setpoint dial setting on the W351 control and
settings and try again. correct if necessary. If the display continues to
show an incorrect value, replace the display
d. If the relay still does not turn On and Off, module.
replace the defective S351 Stage Module(s).
Note: If the W351 control and add-on modules
Table 2: S351 Module Relay all appear to be operating properly, but the
Troubleshooting field device still does not turn On and Off
as expected, check the wiring from the
Mode of LED Normally Setpoint Dial
W351 control or S351 module to the field
Operation Status Open Setting*
device.
Relay
Status
Humidify On Closed (RHT) + offset +
differential
R epairs and Replacement
Do not calibrate or make field repairs.
Humidify Off Open (RHT) + offset HE-67S3-0N0BT and HE-67S3-0N00P humidity
Dehumidify On Closed (RHT) - offset - transmitters and replacement controls are available
differential through local Johnson Controls representatives or
wholesale distributors.
Dehumidify Off Open (RHT) - offset
* See Figure 9 for RHT vs. Humidity illustration.
10 System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin
O rdering Information
Table 3: Ordering Information
Item Product Code Description
Number
Electronic Humidity Control W351AB-2C Setpoint Range: 10-90% RH
Differential: 2-10% RH
(sensor not included)
W351AA-1C Setpoint Range: 10-90% RH
Differential: 2-10% RH
(includes Wall Mount Sensor HE-67S3-0N0BT)
W351AA-2C Setpoint Range: 10-90% RH
Differential: 2-10% RH
(includes Duct Mount Sensor HE-67S3-0N00P)
Humidity Transmitter HE-67S3-0N0BT All-polymer, Wall Mount Humidity Transmitter
HE-67S3-0N00P All-polymer, Duct Mount Humidity Transmitter
Display Module D351AA-1C Digital Humidity Display Module
Stage Module S351AA-1C Humidity Stage Module with % RH Scale
Power Module Y350R-1C Rectified, Class 2, 24 VAC from 120/240 VAC Source
Conduit Adapter ADP11A-600R 1/2-in. Snap-fit Connector (box of 10)
DIN Rail Sections BKT287-1R 35 x 7.5 mm, 0.305 m (12 in.) long
BKT287-2R 35 x 7.5 mm, 0.914 m (36 in.) long
DIN Rail End Clamps PLT344-1R Consists of Two End Clamps
Cable for Remote Mounting WHA29A-600R (0.9 m) 3 ft*
of D351 Display Module
WHA29A-603R (7.6 m) 25 ft
WHA29A-604R (15.2 m) 50 ft
* WHA29A-600R can also be used to daisy chain S351 Stage Modules together.
System 350 W351 Electronic On/Off Humidity Control Product/Technical Bulletin 11
S pecifications
Product W351 Electronic On/Off Humidity Control
Humidity Setpoint Range 10-90% RH
Differential Range 2-10% RH
Input Signal 0-10 VDC Corresponding to 0-100% RH
VDC Power Supply 12 VDC Provided to Power the Humidity Transmitter
Supply Voltage* 20-30 VAC Class 2; 50/60 Hz (or a Y350R Power Module: See Add-On Modules section)
Power Consumption 1.8 VA maximum
Relay Electrical Ratings Horsepower: 1/2 (120/240 VAC)
Full Load Amperes: 9.8 (120 VAC) 4.9 (208/240 VAC)
Locked Rotor Amperes: 58.8 (120 VAC) 29.4 (208/240 VAC)
Non-inductive Amperes: 10 at 24/240 VAC
Pilot Duty: 125 VA at 24/240 VAC
Ambient Temperature Operating: -30-150°F (-34-66°C)
Shipping : -40-185°F (-40-85°C)
Ambient Humidity 0-95% RH Non-Condensing; Maximum Dewpoint 85°F (29°C)
Material Case, Cover: NEMA 1 High-impact Thermoplastic
Agency Listing UL Listed, File E27734, CCN XAPX
cUL Listed, File E27734, CCN XAPX7
Transmitter HE-67S3-0N0BT: All-Polymer, Wall-Mount Humidity Transmitter; 0 to 10 VDC,
0 to 100% RH
HE-67S3-0N00P: All-Polymer, Duct-Mount Humidity Transmitter; 0 to 10 VDC,
0 to 100% RH
Add-On Modules Supply Voltage: Provided by the W351 control
S351 DIFF and OFFSET: 2-10% RH Differential; 2-30% RH Offset
Y350R Supply Voltage: Provided by the W351 control
D351 Display Range: 10-90% RH
* Only one input voltage source may be used.
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult Johnson Controls/PENN Application Engineering at 1-800-275-5676. Johnson Controls, Inc. shall not be liable for
damages resulting from misapplication or misuse of its products.
Building Efficiency
507 E. Michigan Street, Milwaukee, WI 53202
Metasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc.
All other marks herein are the marks of their respective owners. © 2014 Johnson Controls, Inc.
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