Omega Products CNiTH-i16D Installation Manual

User’s Guide

USA

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Temperature & Humidity

CNiTH-i8DH, i8DV, i16D, i32

Controller Manual

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It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply.
OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark
to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.

WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

!

This device is marked with the international caution symbol. It is important to read the Setup Guide before installing or
commissioning this device as the guide contains important information relating to safety and EMC.

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TABLE OF CONTENTS

Part 1: Introduction............................................................................................2

1.1 Description .................................................................................2

1.2 Safety Considerations ...............................................................3

1.3 Before You Begin .......................................................................4

Part 2: Setup.......................................................................................................5

2.1 Front Panel .................................................................................6

2.2 Rear Panel Connections............................................................6

2.3 Electrical Installation .................................................................7

2.3.1 Power Connections........................................................7

2.3.2 Humidity and Temperature Probe.................................8

2.3.3 Wiring Outputs - Wiring Hookup...................................9

2.3.4 Dual Display Color Setup.............................................11

Part 3: Operation: Configuration Mode .........................................................12

3.1 Introduction ..............................................................................12

Turning your Instrument On for the First Time
Buttons Functions in Configuration Mode

3.2 Menu Configuration ................................................................13

3.2.1 ID Number .....................................................................14

3.2.2 Setpoints .......................................................................15

3.2.3 Configuration Menu ....................................................15

3.2.4 Reading Configuration Menu .....................................16

3.2.5 Alarm 1 Menu ...............................................................17

3.2.6 Analog Output (Retransmission) Menu......................21

3.2.7 Alarm 2 Menu................................................................24

3.2.8 Loop Break Time Menu/Field Calibration...................25

3.2.9 Output 1 Menu ..............................................................27

3.2.10 Output 2 Menu ..............................................................34

3.2.11 Ramp and Soak Menu ..................................................36

3.2.12 ID Code Menu ...............................................................38

3.2.13 Communication (Options) Menu.................................40

3.2.14 Display Color Selection Menu.....................................46

Part 4: Specifications ......................................................................................49

Part 5: Factory Preset Values.........................................................................52

CE APPROVAL INFORMATION .......................................................................54

i

LIST OF FIGURES:

Figure 2.1 Front Panel Display..............................................................................5

Figure 2.2 Rear Panel Power and Output Connections ......................................6

Figure 2.3 Rear Panel Input Connections ............................................................6

Figure 2.4 Main Power Connections.....................................................................7

Figure 2.5 Probe Wiring Hookup...........................................................................8

Figure 2.6 Output Connections:

a) Mechanical Relay and SSR Outputs – Wiring Hookup...............9

b) Pulse and Analog Outputs – Wiring Hookup...............................9

Figure 2.7 Typical Application...............................................................................9

Figure 2.8 Communication Output:

a) RS-232 Output – Wiring Hookup ................................................10

b) RS-485 Output – Wiring Hookup ................................................10

Figure 2.9 Excitation Output................................................................................10

Figure 2.10 Snubber Circuits Wiring Hookup ......................................................10

Figure 2.11 i/8D Locations of S1 and Selectable Jumper Positions..................11

Figure 2.12 i/16D Location of S1 and Selectable Jumper Positions..................11

Figure 3.1 Flow Chart for ID and Setpoints........................................................13

Figure 3.2 Flow Chart for Configuration Menu ..................................................15

Figure 3.3 Flow Chart for Reading Configuration Menu ...................................16

Figure 3.4 Flow Chart for Alarm 1.......................................................................17

Figure 3.5 Flow Chart for Analog Output (Retransmission).............................21

Figure 3.6 Flow Chart for Alarm 2.......................................................................24

Figure 3.7 Flow Chart for Loop Break Time.......................................................25

Figure 3.8 Flow Chart for Output 1 .....................................................................27

Figure 3.9 Flow Chart for Output 2 .....................................................................34

Figure 3.10 Flow Chart for Ramp and Soak .........................................................36

Figure 3.11 Flow Chart for ID Code.......................................................................38

Figure 3.12 Flow Chart for Communication Option ............................................40

Figure 3.13 Flow Chart for Display Color Selection............................................46

LIST OF TABLES:

Table 2.1 Front Panel Annunciators....................................................................5

Table 2.2 Rear Panel Connector..........................................................................6

Table 2.3 Fuse Requirement ................................................................................7

Table 3.1 Button Function in Configuration Mode...........................................12

Table 3.2 Command Letters and Suffix for iTH ...............................................41

Table 5.1 Factory Preset Values........................................................................52

ii

NOTES, WARNINGS and CAUTIONS

Information that is especially important to note is identified by following labels:

• NOTE

• WARNING or CAUTION

• IMPORTANT

• TIP

NOTE: Provides you with information that is important to successfully

setup and use the Programmable Digital Meter.

CAUTION or WARNING: Tells you about the risk of electrical shock.

CAUTION, WARNING or IMPORTANT: Tells you of circumstances or

practices that can effect the instrument’s functionality and must refer
to accompanying documents.

TIP: Provides you helpful hints.

1

PART 1

INTRODUCTION

1.1 Description

The iTH Series instruments monitor and control both temperature and relative humidity.

• Used with an iTH probe the controller comes with dual displays. The top displays
relative humidity and the bottom displays temperature. Relative Humidity can be
toggled with Temperature readings (by pressing the bbutton) or Dewpoint readings
(by pressing the cbutton). Dewpoint is the temperature at which water vapor from
the air begins to form droplets and condenses on surfaces that are colder than the
dewpoint of air.

• The temperature and humidity control can be achieved by using on/off or PID
heat/cool control strategy. Control can be optimized with an auto tune feature. The
instrument offers a ramp to setpoint with timed soak period before switching off the
output.

The instruments are simple to configure and use, while providing tremendous versatility
and a wealth of powerful features. The iTH Series instruments are available either as
monitors or controllers. The monitors are extremely accurate programmable digital panel
meters displaying humidity, temperature, or dew point. The controllers also provide dual
loop control for both humidity and temperature and are easily programmed for any
control or alarming requirement from simple on-off to full autotune PID control.

The iTH family of meters and controllers are available in four true DIN Sizes with NEMA 4,
IP65 splash resistant bezels: the ultra compact 1/32 DIN (the world's smallest dual loop
Humidity + Temperature controller); the popular midsize 1/16 DIN square bezel with dual
display; the 1/8 DIN vertical, and the 1/8 DIN horizontal with the big bright 21mm digits.

The iTH series LED displays can be programmed to change color between Green,
Amber, and Red at any set point or alarm point.

The iTH controller models offer a choice of two control or alarm outputs in almost any
combination: solid state relays (SSR); Form "C" SPDT (Single Pole Double Throw)
relays; pulsed 10 Vdc output for use with an external SSR; or Analog Output selectable
for control or retransmission of the process value. Universal power supply accepts 90 to
240 Vac. Low voltage power option accepts 24 Vac or 12 to 36 Vdc.

The Networking and Communications options include direct Ethernet LAN connectivity
with an Embedded Web Server, and serial communications. The -C24 serial
communications option includes both RS-232 and RS-485. Protocols include both
MODBUS and a straightforward ASCII protocol. The -C4EI option includes both Ethernet
and RS-485 ASCII/MODBUS on one device.

The iTH Series meters and controllers are designed for easy integration with popular
industrial automation, data acquisition and control programs as well as Microsoft Visual
Basic and Excel. provides free configuration and data acquisition software and demos
which makes it fast and easy to get up and running with many applications.

2

1.2 Safety Considerations

This device is marked with the international caution symbol. It is important
to read this manual before installing or commissioning this device as it
contains important information relating to Safety and EMC
(Electromagnetic Compatibility).

This instrument is a panel mount device protected in accordance with
EN 61010-1:2001, electrical safety requirements for electrical equipment
for measurement, control and laboratory. Installation of this instrument
should be done by qualified personnel. In order to ensure safe operation,
the following instructions should be followed.

This instrument has no power-on switch. An external switch or circuit­breaker shall be included in the building installation as a disconnecting
device. It shall be marked to indicate this function, and it shall be in close
proximity to the equipment within easy reach of the operator. The switch or
circuit-breaker shall meet the relevant requirements of IEC 947–1 and
IEC 947-3 (International Electrotechnical Commission). The switch shall
not be incorporated in the main supply cord.

Furthermore, to provide protection against excessive energy being drawn
from the main supply in case of a fault in the equipment, an overcurrent
protection device shall be installed.

• Do not exceed voltage rating on the label located on the top of the
instrument housing.

• Always disconnect power before changing signal and power
connections.

• Do not use this instrument on a work bench without its case for safety
reasons.

• Do not operate this instrument in flammable or explosive atmospheres.

• Do not expose this instrument to rain or moisture.

• Unit mounting should allow for adequate ventilation to ensure
instrument does not exceed operating temperature rating.

• Use electrical wires with adequate size to handle mechanical strain
and power requirements. Install without exposing bare wire outside the
connector to minimize electrical shock hazards.

EMC Considerations

• Whenever EMC is an issue, always use shielded cables.

• Never run signal and power wires in the same conduit.

• Use signal wire connections with twisted-pair cables.

• Install Ferrite Bead(s) on signal wires close to the instrument if EMC
problems persist.

Failure to follow all instructions and warnings may result in injury!

3

1.3 Before You Begin

Inspecting Your Shipment:

Remove the packing slip and verify that you have received everything
listed. Inspect the container and equipment for signs of damage as soon
as you receive the shipment. Note any evidence of rough handling in
transit. Immediately report any damage to the shipping agent. The carrier
will not honor damage claims unless all shipping material is saved for
inspection. After examining and removing the contents, save the packing
material and carton in the event reshipment is necessary.

Customer Service:

If you need assistance, please call the nearest Customer Service
Department, listed in this manual.

Manuals, Software:

The latest Operation and Communication Manual as well as free
configuration software and ActiveX controls are available from

the
website listed in this manual or on the CD-ROM enclosed with your
shipment

.

For first-time users: Refer to the QuickStart Manual for basic operation
and set-up instructions.

If you have the Serial Communications/Ethernet Option you can easily
configure the controller on your computer or on-line.

To Disable Outputs:

To ensure that menu changes are properly stored, Standby Mode should
be used during setup of the instrument. During Standby Mode, the
instrument remains in a ready condition, but all outputs are disabled.
Standby Mode is useful when maintenence of the system is necessary.

When the instrument is in "RUN" Mode, push d twice to disable all
outputs and alarms. It is now in "STANDBY" Mode. Push d once more
to resume "RUN" Mode.

PUSH d TWICE to disable the system during an EMERGENCY.

To Reset the Meter:

When the controller is in the "MENU" Mode, push c once to direct
controller one step backward of the top menu item.

Push c twice to reset controller, prior to resuming "Run" Mode except
after "Alarms", that will go to the "Run" Mode without resetting the
controller.

4

PART 2

SETUP

2.1 Front Panel

Figure 2.1 Front Panel Display

The upper display may be RH, Temperature or Dewpoint readings
depending on your Reading Configuration selections. Factory defaults
are shown in Figure 2.1.

The Dual Display allows the user to observe the
Relative Humidity or Dewpoint (upper display) and Temperature Value
(lower display), at the same time.

Table 2.1 Front Panel Annunciators

1

Output 1/Setpoint 1/ Alarm 1 indicator

2

Output 2/Setpoint 2/ Alarm 2 indicator

°C

°C unit indicator for Temperature or Dewpoint

°F

°F unit indicator for Temperature or Dewpoint

%RH

Display shows the Percent Relative Humidity

D

Display shows the Dewpoint

a

Changes display to Configuration Mode and advances through menu items*

b

Used in Program Mode:
On Dual Display: swaps the upper and lower displays from RH readings to
Temperature readings. Note: this eliminates the small LED ennuciators*
On Single Display units: replaces RH readings to Temperature readings*

c

Used in Program Mode:
On Dual Display: changes upper display from RH readings to Dewpoint readings*
On Single Display units: replaces RH readings to Dewpoint readings*

d

Accesses submenus in Configuration Mode

and stores selected values*

* See Part 3 Operation: Configuration Mode.

5

Refer to the Quick Start
Guide for assembly and
disassembly instructions.

Relative Humidity

Upper Display

Temperature

Lower Display

iTH-i32

1
2

%RH

D

1
2

%RH

D

1

1.00

[25.4]

1
2

%RH

D

1

1
2
C
F

2

1

%RH

D

iTH-i16D

iTH-i8DH

iTH-i8DV

2.2 Rear Panel Connections

The rear panel connections are shown in Figures 2.2 and 2.3.

Figure 2.2 Rear Panel Power and Output Connections

Figure 2.3 Rear Panel Input Connections

Table 2.2 Rear Panel Connector

POWER AC/DC Power Connector: All models
INPUT iTH-PROBE
OUTPUT 1 Based on one of the following models:

Relay SPDT
Solid State Relay
Pulse
Analog Output (Voltage and Current)

OUTPUT 2 Based on one of the following models:

Relay SPDT
Solid State Relay
Pulse

OPTION Based on one of the following models:

RS-232C or RS-485 programmable
Excitation

6

6 5 4 6 5 4 6 5 4 3 2 1 3 2 1

8 7 6 5 4 3 2 1

N/C

SHIELD

RED(VCC)

WHITE(CLK)

BLACK(RTN)

GREEN(DATA)

2.3 Electrical Installation

2.3.1 Power Connections

Caution: Do not connect power to your device until you have completed all

input and output connections. Failure to do so may result in injury!

Connect the main power connections as shown in Figure 2.4.

Figure 2.4 Main Power Connections

Table 2.3 Fuse Requirement (see specifications)

FUSE Connector Output Type For 115Vac For 230Vac DC
FUSE 1 Power N/A 100 mA(T) 100 mA(T) 100 mA(T)
FUSE 2 Power N/A N/A N/A 400 mA(T)

For the low voltage power option, in order to maintain the same degree of
protection as the standard high voltage input power units (90 - 240 Vac),
always use a Safety Agency Approved DC or AC source with the same
Overvoltage Category and pollution degree as the standard AC unit (90 ­240 Vac).

The Safety European Standard EN61010-1 for measurement, control,
and laboratory equipment requires that fuses must be specified based on
IEC127. This standard specifies for a Time-lag fuse, the letter code “T”.
The above recommended fuses are of the type IEC127-2-sheet III. Be
aware that there are significant differences between the requirements
listed in the UL 248-14/CSA 248.14 and the IEC 127 fuse standards. As a
result, no single fuse can carry all approval listings. A 1.0 Amp IEC fuse
is approximately equivalent to a 1.4 Amp UL/CSA fuse. It is advised to
consult the manufacturer’s data sheets for a cross-reference.

7

Use copper conductors
only for power connections

2.3.2 Humidity and Temperature Probe

The figure below shows the wiring hookup for the temperature and humidity probe.

Choose one which gives the best signal integrity-

1) Connect Probe’s Shield to RTN if Probe Housing is not

connected to

Earth Ground.

OR

2) Connect Probe’s Shield to Earth Ground if Probe Housing is not
connected to Earth Ground.

Figure 2.5 Probe Wiring Hookup

8

METAL HOUSING

IS CONNECTED

TO SHIELD WIRE

N/C

RED(VCC)

WHITE(CLK)

BLACK(RTN)

GREEN(DATA)

SHIELD(See Note)

9

2.3.3 Wiring Outputs

This meter has two factory installed outputs. The SPDT Mechanical Relay, SPST
Solid State Relay, Pulse and Analog Output Connection are shown below.

Figure 2.6
a) Mechanical Relay and SSR b) Pulse and Analog

Outputs Wiring Hookup Outputs Wiring Hookup

Figure 2.7 Typical Applications

Use copper conductors
only for power connections

ac CONTROLLED SSR USED WITH TEMPERATURE CONTROLLER WITH dc VOLTAGE SSR DRIVER OUTPUT

Vac

TEMPERATURE

CONTROLLER

CONTROL

SIDE

0 or 5 Vdc,

TYPICALLY

dc INPUT

SSR

431

LOAD

SIDE

2

HEATER

FAST BLOW

FUSE

Vac

ac CONTROLLED SSR USED WITH TEMPERATURE CONTROLLER WITH MECHANICAL RELAY OUTPUT

TEMPERATURE

CONTROLLER

Vac

ac CONTROLLED SSR USED WITH TEMPERATURE CONTROLLER WITH TRIAC OUTPUT

TEMPERATURE

CONTROLLER

Vac

CONTROL

SIDE

Vac

DRIVING

SSR

CONTROL SIDE

LOAD

RESISTOR

Vac

DRIVING

SSR

ac INPUT

SSR

431

ac INPUT

SSR

431

LOAD

SIDE

2

LOAD

SIDE

2

HEATER

FAST BLOW

FUSE

HEATER

FAST BLOW

FUSE

Vac

Vac

10

This device may have a programmable communication output. The RS-232 and
RS-485 Output Connection are shown below.

Figure 2.8

a) RS-232 Output Wiring Hookup b) RS-485 Output Wiring Hookup

This device may also have an excitation
output.

Excitation is not available if
communication option is installed.

If the Dual Display model has a Low
Voltage power supply option, then
excitation is not available.

This device has snubber circuits designed to
protect the contacts of the mechanical relays
when it switches to inductive loads (i.e.
solenoids, relays). These snubbers are
internally connected between the Common (C)
and Normally Open (NO) relay contacts of
Output 1 and Output 2.

If you have an inductive load connected
between Common (C) and Normally
Closed (NC) contacts of the
mechanical relays and you want to
protect them from the rush current
during the switching period, you have
to connect an external snubber circuit
between Common (C) and Normally
Closed (NC) contacts as indicated in

Figure 2.10.

Figure 2.10

Snubber Circuits Wiring

Hookup

Figure 2.9

Excitation Output

11

2.3.4 Dual Display Color Setup

The dual display option allows the user to change the color of the upper and
lower displays.

To change the color of the upper display, see Section 3.2.14
(Display Color section).

To change the color of the lower display follow the instructions below:
The unit should be removed from the panel and opened.

Refer to the Quick Start Guide for assembly and disassembly instructions.

The S1 jumper is located on the back side of the display board.
The location of S1 and pin selection jumpers are shown below.

Use a jumper for GREEN or RED, never leave S1 open.

Figure 2.11 i/8D Location of S1 and Selectable Jumper Positions

Figure 2.12 i/16D Location of S1 and Selectable Jumper Positions

i/8DH
Dual
Horizontal

i/8DV
Dual
Vertical

12

PART 3

OPERATION: Configuration Mode

3.1 Introduction

The instrument has two different modes of operation. The first, Run Mode, is
used to display Temperature and Relative Humidity. The other mode, Menu
Configuration Mode, is used to navigate through the menu options and
configure the controller. Part 3 of this manual will explain the Menu
Configuration Mode. For your instrument to operate properly, the user must
first "program" or configure the menu options.

Turning your Controller On for the First Time

The device becomes active as soon as it is connected to a power source. It
has no On or Off switch. The device at first momentarily shows the software
version number, followed by reset

RST

, and then proceeds to the Run Mode.

For first-time users: Refer to the QuickStart Manual for basic operation
and set-up instructions.

If you have the Serial Communications/Ethernet Option you can easily
configure the controller on your computer or on-line.

Table 3.1 Button Function in Configuration Mode

• To enter the Menu, the user must first press abutton.

• Use this button to advance/navigate to the next menu item. The user can
navigate through all the top level menus by pressing a.

• While a parameter is being modified, press ato escape without saving the
parameter.

• Press the up bbutton to scroll through “flashing” selections. When a
numerical value is displayed press this key to increase value of a parameter
that is currently being modified.

• Pressing the bbutton for approximately 3 seconds will speed up the rate at
which the set point value increments.

• In the Run Mode, pressing the b button changes display from RH readings
to Temperature readings.

• Press the down c button to go back to a previous Top Level Menu item.

• Press this button twice to reset the controller to the Run Mode.

• When a numerical value is flashing (except set point value) press cto scroll
digits from left to right allowing the user to select the desired digit to modify.

• When a setpoint value is displayed press c to decrease value of a setpoint
that is currently being modified. Pressing the c button for approximately 3
seconds will speed up the rate at which the setpoint value is decremented.

• In the Run Mode, pressing the c button changes from RH readings to
Dewpoint readings.

• Press the enter d button to access the submenus from a Top Level Menu item.

• Press d to store a submenu selection or after entering a value — the display
will flash a

STRD

message to confirm your selection.

• In the Run Mode, press d twice to enable Standby Mode with flashing

STBY

.

Reset: Except for Alarms, modifying any settings of the menu configuration
will reset the instrument prior to resuming Run Mode.

a

MENU

b

(UP)

c

(DOWN)

d

ENTER

13

3.2 Menu Configuration

It is required that you put the controller in the Standby Mode for any
configuration change other than Setpoints & Alarms.

Figure 3.1 Flow Chart for ID and Setpoints

RdG

14

3.2.1 ID Number

TO ENABLE/DISABLE OR CHANGE ID CODE, SEE SECTION 3.2.12.

If ID Code is Disabled or set as Default (0000) the menu will skip ID
step to Setpoint Menu.

If ID Code is set to Full Security Level and user attempts to enter the
Main Menu, they will be prompted for an ID Code.

If ID Code is set to Setpoint/ID Security Level and user attempts to
enter the Configuration Menu, they will be prompted for an ID Code.

ENTERING YOUR NON-DEFAULT FULL SECURITY ID NUMBER.

Press a 1) Display shows ID.
Press d 2) Display advances to

____

.

Press b & c 3) Press bto increase digit 0-9. Press cto activate next digit

(flashing). Continue to use band c to enter your 4-digit ID
code.

Press d 4) If the correct ID code is entered, the menu will advance to

the Setpoint 1 Menu, otherwise an error message

ERRo

will

be displayed and the instrument will return to the Run Mode.

To change ID Code, see ID Menu in the Configuration section.

ENTERING YOUR NON-DEFAULT SETPOINT/ID SECURITY ID NUMBER.

Press a 5) Display shows

SP1

Setpoint 1 Menu.

Press a 6) Display shows

SP2

Setpoint 2 Menu.

Press a 7) Display shows IDID Code Menu.
Press d 8) Display advances to

____

.

Press b & c 9) Use b and c to change your ID Code.
Press d 10) If correct ID Code is entered, the display will advance to

the

INPT

Input Menu, otherwise the error message

ERRo

will be displayed and the controller will return to the Run
Mode.

To prevent unauthorized tampering with the setup parameters, the
instrument provides protection by requiring the user to enter the ID
Code before allowing access to subsequent menus. If the ID Code
entered does not match the ID Code stored, the controller responds
with an error message and access to subsequent menus will be denied.

Use numbers that are easy for you to remember. If the ID Code is
forgotten or lost, call customer service with your serial number to
access and reset the default to

0000

.