Dwyer Instruments HS Operating Manual

Series HS Humidity Switch

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0 TO 1 V AND 0 TO 3 V PROBES

SUPPLY

Specications - Installation and Operating Instructions

Bulletin H-HS

The microprocessor based SERIES HS Humidity Switch provides control for humidifying or dehumidifying. Relative humidity, output status, and error messaging

can be viewed on the bright green LED. The switch features 9 user dened parameters

including setpoint, hysteresis, control type, cycle time, and probe adjustment. Access to programming parameters can be locked for security purposes using the password

protection feature. The Series HS includes a tting clip for panel mounting, gasket,

rear terminal cover, and instruction manual.

INSTALLATION Note: Units must be mounted away from vibration, impacts, water and corrosive

gases.

• Cut hole in panel 2.80 x 1.14 inches (71 x 29 mm).

• Apply silicone (or rubber gasket) around the perimeter of the hole to prevent leakage.

• Insert unit into hole of panel.

• Slide removable tting clips onto unit from the back until secure to panel.

• Remove back cover to wire unit.

• Wiring diagram is displayed on the top of the unit.

• Note: PROBE CABLE LENGTH MUST NOT EXCEED 328 ft (100 m). DO NOT INSTALL PROBE CABLE NEAR POWER CABLES)

• Replace cover once wiring is completed.

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SPECIFICATIONS Input: 0 to 1 V, 4 to 20 mA, or THC-P probe (3 V). Relative Humidity Range: 0 to 1 V and 4 to 20 mA inputs: 0 to 100; THC-P input:

20 to 90.

Accuracy: HS: ±1%; THC-P: ±5%. Display: 3-digit, green, 1/2˝ (12.7 mm) digits. Resolution: 1 digit. Temperature Limits: 32 to 158°F (0 to 70°C). Storage Temperature: -4 to 176°F (-20 to 80°C). Output: 16 A SPDT relay @ 250 VAC resistive. Horsepower Rating (HP): 1/3 HP. Control Type: ON/OFF. Power Requirements: 110 VAC or 230 VAC (depending on model). Memory Backup: Nonvolatile memory. Weight: 2.3 oz (65 g). Front Panel Rating: IP64. Agency Approvals: CE, UL.

WIRING DIAGRAM

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LOVE CONTROLS

A DIVISION OF DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

GND IN Vcc

POWER

INPUT

Note: THC-P probe should be connected to the HS switch as follows:

• Yellow/Green wire: Positive (Vcc)

• Brown wire: Data (IN)

• Blue wire: Ground (GND)

4 TO 20 mA PROBES

GND IN Vcc

Phone: 219/879-8000

Fax: 219/872-9057

SUPPLY

POWER SUPPLY

POWER

www.lovecontrols.com

e-mail: love@love-controls.com

OUTPUT

PARAMETERS

Description Units Range Default

Set point

Differential or hysteresis

Low set point limit

High set point limit

Dehumidifying or humidifying control

4 mA display value

20 mA display value

Min. load stop time

Continuous cycle time

Input value adjustment

Input type

Access code

PARAMETER 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 dis connected when the relative humidity is < = SP. Lc Display value for 4 mA input. Parameters for use with 4 to 20 mA output probe. Hc Display value for 20 mA input. Parameters for use with 4 to 20 mA output probe.

c0 Minimum times between start and stop. c1 Continuous cycle time. The time the load is connected when a continuous cycle

is activated. To activate, press the down arrow button for 8 seconds. The display will blink as indicated. The output will be connected during the number of hours indicated by the c1 parameter. To cancel the Continuous cycle, press and hold the down arrow button again for 8 seconds. P1 Probe adjustment. If the probe is not placed in the exact point that is to be measured, use a standard hygrometer and adjust the difference between the display value and the hygrometer reading with this parameter.

P5 Probe type. H5 Access to Probe Parameters. (The code is set to 0 from the factory.)

% % % % Option % % Minutes Hours % Option Value

r1 to r2 1 to 20 0 to r2 r1 to 100 dH/Hu 0 to 50 50 to 100 0 to 59 0 to 24

-10 to 10 01, 03, 42 0 to 255

50 1 0 100 dH 0 100 0 0 0 03 0

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 modied 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 will 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 0 is shown on the display. (Unit comes with code set at 0 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 rst 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 modied with the UP and DOWN arrows.

• Press SET to enter the value and exit to text parameter.

• Repeat until all necessary parameters are modied.

• 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 ooo Open Probe Error

In the event an error occurs, the unit follows a xed working cycle which connects the

load for 5 minutes and then disconnects the load for 5 minutes alternately.

MAINTENANCE/REPAIR

Upon nal installation of the Series HS Humidity Switch, no routine maintenance is

required. A periodic check of system calibration is recommended. The devices are

not eld repairable and should be returned to the factory if recalibration or other services is required. After r 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.

Dwyer Instruments, Inc. Attn: Repair Department 102 Highway 212 Michigan City, IN 46360 U.S.A.