PPI HumiTherm Ultra User Manual

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HumiTherm Ultra User Manual

HumiTherm Ultra

Temperature + Humidity (%RH) Control & Recording System with 8 / 16 Mapping Inputs

Touch Operation Panel

PPI

HumiTherm Ultra

User Manual

HumiTherm Ultra User Manual

CONTENTS

1. MOUNTING & ELECTRICAL CONNECTIONS : HMI (TOUCH PANEL) 1

2. MOUNTING & ELECTRICAL CONNECTIONS : microPLC 4

3. MOUNTING, ELECTRICAL CONNECTIONS & JUMPER SETTINGS : MAPPING 7

4. BASIC OPERATION & PARAMETERS ORGANIZATION 11

5. OPERATOR LEVEL PARAMETERS 20

6. SUPERVISORY LEVEL PARAMETERS 22

7. FACTORY LEVEL PARAMETERS 26

APPENDIX-A : DC LINEAR SIGNAL INTERFACE 47

APPENDIX-B : COMPRESSOR SETTING PARAMETERS 50

APPENDIX-C : STANDBY SENSORS 53

APPENDIX-D : STANDBY CONTROL GADGET 55

APPENDIX-E : DOOR LOCK 58

APPENDIX-F : DIGITAL INPUT & OUTPUT 59

HumiTherm Ultra User Manual

Section 1

MOUNTING & ELECTRICAL CONNECTIONS : HMI (TOUCH PANEL)

4.3” Mounting

Table 1.1

Dimensions

Overall

Panel Cutout

128(W) X 102(H) X 55(D), mm

121(W) X 95(H), mm

Figure 1.1

102 mm

95 mm

(Panel Cut)

4.3” Electrical Connections

128 mm

5 mm

55 mm

Figure 1.2

121 mm

(Panel Cut)

HumiTherm Ultra User Manual

7” Mounting

Table 1.2

Dimensions

Overall

Panel Cutout

206(W) X 136(H) X 44(D), mm

199(W) X 129(H), mm

Figure 1.3

136 mm

129 mm

(Panel Cut)

206 mm

199 mm

(Panel Cut)

6.5 mm 44 mm

HumiTherm Ultra User Manual

7” Electrical Connections

24VDC FG

Figure 1.4

PULL

COM2 ETHERNET

RESET

SD-CARD

USB

HOST

COM1

Battery Cover

15 Pin

1 2

Table 1.3

3-Pin Male / Female Connector (5.08 mm pitch)

Supply Voltage : 20 to 28 VDC (24 V Nominal)

9 (4.3” HMI) / 15 (7” HMI) Pin D Type Connector

RS485 Serial Communication with microPLC & Mapping Unit

9 Pin

6 Pin PS/2 Connector

RS232 Serial Communication with PC

HumiTherm Ultra User Manual

Section 2

MOUNTING & ELECTRICAL CONNECTIONS : microPLC

Mounting (Base / Wall Mounting)

179mm

8mm

ø5mm Mounting Hole

Figure 2.1

77mm

100mm

microPLC Electrical Connections

27262524

+-+

Main Set Select

Main

Temperature

+ +

Pt100

+-+

Door Lock

Stby Set Select

Humidity

Supply

5VDC

Exc

18~32VDC

1 2 3 4 5 6 7 8 9 10 11 12 13 22 2314 15 16 17 18 19 20 21

Humidifier

Compressor

Standby

Digital Outputs

+ +

Humidity

Heater

Standby

+ +

Compressor

Figure 2.2

Humidifier

Main

Temperature

Pt100

ø5mm Mounting Hole

43424140393837363534333231302928

Alarm

Heater

HMI

RS485

Thermostat

Water Level

Stby

8mm

Thermostat

Water Level

Main

Digital Inputs

microPLC

Stability Control

Alarm ACK

525150494847464544

Power Fail

Door Open

HumiTherm Ultra User Manual

DESCRIPTIONS

The connections are described as under:

Main Humidity (%RH) Transmitter Input (Terminals : 7,8, 9)

The Controller accepts DC Current (mA) / DC Voltage (V) as Humidity input. The connections are described below.

Humidity Transmitter with DC Voltage (V) Output

Figure 2.3 (a)

0/1~5V, 0~10V

7 8 9

The Figures 2.3(a) depicts wiring connections for voltage output transmitter. The Excitation Voltage can be obtained from an external source or from the controller (5 VDC).

Humidity Transmitter with DC Current (mA) Output

The Figures 2.3(b) depict wiring connections for current output transmitter. Note that terminals 8 & 9

Figure 2.3 (b)

0/4~20mA

8 9

should be shorted. The Excitation Voltage can be obtained from an external source or from the controller (5 VDC).

Main Temperature (°C) Sensor / Transmitter Input (Terminals : 10, 11, 12, 13 )

The Controller accepts RTD Pt100 (3-wire / 2-wire) or DC Current (mA) / DC Voltage (V) as Temperature input. The connections are described.

Figure 2.4 (a) Figure 2.4 (b) Figure 2.4 (c)

RTD Pt100

0/1~5V, 0~10V

0/4~20mA

10 11 12 13

RTD Pt100, 3-wire

Connect single leaded end of RTD bulb to terminal 10 and the double leaded ends to terminals 11 & 12 as shown in Figure

2.4(a). Use copper conductor leads of very low resistance ensuring that all 3 leads are of the same gauge and length. Avoid joints in the cable.

Temperature Transmitter with DC Voltage (V) Output

The Figures 2.4(b) depicts wiring connections for voltage output transmitter. The Excitation Voltage can be obtained from an external source or from the controller (5 VDC).

Temperature Transmitter with DC Current (mA) Output

The Figures 2.4(c) depict wiring connections for current output transmitter. Note that terminals 12 & 13 should be shorted. The Excitation Voltage can be obtained from an external source or from the controller (5 VDC).

5 VDC Excitation Voltage (Terminals : 4, 5)

The Controller is supplied with inbuilt 5VDC Excitation Voltage as standard. The Excitation Voltage can be used to power external Temperature and/or RH Transmitters.

The ‘+’ and ‘-’ terminals are for voltage ‘Source’ and ‘Return’ paths, respectively.

HumiTherm Ultra User Manual

[Optional] Standby Humidity (%RH) Transmitter Input (Terminals : 14, 15, 16, 17) [Optional] Standby Temperature (°C) Sensor / Transmitter Input (Terminals : 18, 19, 20, 21)

The Control Unit optionally supports Inputs for Standby (redundant) Humidity & Temperature sensor / transmitter. The Connection detail are the same as for main sensor / transmitter described above.

[Optional] Door Output (terminals : 24, 25) [Optional] Standby Set Select Output (terminals : 26, 27) [Optional] Main Set Select Output (terminals : 28, 29) [Optional] Standby Compressor Output (terminals : 30, 31) [Optional] Standby Humidifier Output (terminals : 32, 33) [Optional] Standby Heater Output (terminals : 34, 35) Main Compressor Output (terminals : 36, 37) Main Humidifier Output (terminals : 38, 39) Main Heater Output (terminals : 40, 41) Alarm Output (terminals : 42, 43)

All the above control & alarm outputs are Voltage pulses (12VDC @ 40mA) for driving external SSR or Relay. The ‘+’ and ‘-’ terminals are for voltage ‘Source’ and ‘Return’ paths, respectively.

The Optional Outputs are fitted only if Controller is ordered with Standby Control Outputs.

[Optional] Standby Thermostat Digital Input (Terminals 44, )46 [Optional] Standby Water Level Digital Input (Terminals 45, )46 Main Thermostat Digital Input (Terminals 47, )46 Main Water Level Digital Input (Terminals 48, )46 Alarm Acknowledge Digital Input (Terminals 50, )49 Power Fail Digital Input (Terminals 51, )49 Door Open Digital Input (Terminals 52, )49

(Terminals 46 & 49 are Common)

Potential-free contact closure input terminals are provided as digital inputs. An ‘Open’ or ‘Close’ switch position is detected as input.

HMI (Terminals 22, 23) COMMUNICATION PORT

For reliable noise free communication, use a pair of twisted wires inside screened cable. The wire should have less than 100 ohms / km nominal DC resistance (Typically 24 AWG or thicker). Connect the terminating resistor (Typically 100 to 150 ohm) at one end to improve noise immunity.

POWER SUPPLY 1(Terminals , 2, 3)

As standard, the is supplied with power connections suited Module for to V C . The accuracy / p formance of the 18 32 D power source er Module is not affected by the variations in the supply within sp cified e limits of to 3 VDC. Use well-insulated copper conductor wire of 18 2 the size not smaller than 0.5mm² for power supply connections ensuring proper polarity as shown in Figure . The is not 2.5 Module provided with fuse and power switch. If necessary, mount them

DC Power

Source

Figure 2.5

Fuse

2 Pole

Isolating Switch

Mains

Earth

separately. Use a blow fuse rated for 0.5A current. slow

For safety and enhanced electrical noise immunity, it is highly recommended to connect Main Power Supply ‘Earth’ to terminal 3.

HumiTherm Ultra User Manual

Section 3

MOUNTING, ELECTRICAL CONNECTIONS & JUMPER SETTINGS : MAPPING

Mounting (Base / Wall Mounting)

Figure 3.1

210mm

205mm

ø5mm

Mounting Hole

5mm

8mm

ø5mm Mounting Hole

Mapping Electrical Connections

52 53

COMM PORT

B BB B

A1A2

28293031323334353637383940

B1B2

°C

MAP 5

%RH

A1A2

88mm

110mm

Figure 3.2

°C

mV / V

B1B2

MAP 8

%RH

A1A2

464748495051

%RH

4142

°C

RTD

B1B2

MAP 7

mV / V

%RH

A1A2

B1B2

°C

MAP 6

°C

PPI

MAP 1

°C

1 2

A1 A2 A3 B1 B2 B3

%RH

6 7 8 9 10

B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3

MAP 2

°C

A1 A2 A3

%RH

11 121314

MAP 3

°C

15 161718 19 20

%RH

B1 B2 B3

MAP 4

°C

21 222324

%RH

84 ~ 264

VAC

26 27

UniMap

SUPPLY

4 / 8 Points

Mapping Module

Sr. No.:

HumiTherm Ultra User Manual

Map Inputs

Each of the °C and %RH inputs are identical from wiring connection viewpoint. The descriptions below apply to all the inputs with no deviations.

Make sure that proper jumper settings are made for each input for the selected input type as described later in this ection.s

Figure 3.3(b)Figure 3.3(a)

°C

RTD

A1 A2 A3

RTD Pt100, 3-wire

Connect single leaded end of bulb to and the double leaded ends to terminals and (interchangeable) as shown RTD A1 A2 A3 in Use copper conductor leads of very low resistance ensuring that all 3 leads are of the same gauge and length. Figure 3.3(a). Avoid joints in the cable.

DC Linear Voltage (mV / V) & Current (mA)

Use a shielded twisted pair with the shield grounded at the signal source for connecting mA / mV / V source. Connect common (-) to and the signal (+) to , as shown in A2 / B2 A1 / B1 Figure 3.3(a) & (b).

mV / V / mA

A1 A2

%RH

mV / V / mA

B1 B2

POWER SUPPLY

Figure 3.4

Fuse

2 Pole

Isolating Switch

Power Supply

Terminal

Line

26 (L)

Neutral

As standard, the controller is supplied with power connections suited for 8 to 264 VAC line supply. Use well-insulated copper 5 conductor wire of the size not smaller than 0.5mm² for power supply connections. Connect Line (Phase) supply line to terminal 26 and the Neutral (Return) supply line to terminal 27 as shown in Figure . . The controller is not provided with fuse and 3 4 power switch. If necessary, mount them separately. Use a time lag fuse rated 1A @ 240 VAC.

27 (N)

HumiTherm Ultra User Manual

SERIAL COMMUNICATION PORT

Figure 3.5

HMI

Port

RS485

Mapping

RS485 Port

OUT

To microPLC

The wiring connections for interfacing the HMI with mapping unit is shown in the figure 3.5.

INPUT TYPE : JUMPER SETTINGS

The Mapping Unit (UniMap) is supplied with 8 ( ) or 16 ( T + 8RH) s. Each can be user configured for a 4T + 4RH 8 Map Input Input variety of input types which requires appropriate parameters settings and jumper settings on . The figure shows UniMap 3.6 the locations of jumper setting arrangements for each . input

Figure 3.6

°C

MAP 1

°C

MAP 5

%RH

MAP 4

%RH

MAP 8

HumiTherm Ultra User Manual

The jumper setting arrangement comprises of as shown in the figure below. The figure also depicts Pins & Shorting-Link 3.7 how to mount the Shorting-Link for a particular jumper setting.

Figure 3.7

Pins

The figures below show the jumper settings for different input types.

Shorting

Link

Shorting Link

Placed

RTD Pt100 (3-wire)

Place Shorting Link on Pins 1 & 2

0-50mV, 0-200mV, 0-1.25V,

0-5V, 1-5V, 0-10V

Shorting Link

Parked

0-20mA, 4-20mA

Place Shorting Link on Pins 2 & 3

Park Shorting Link

HumiTherm Ultra User Manual

Section 4

BASIC OPERATION & PARAMETER ORGANIZATION

Upon Power up to the HMI, after a few initialization screens, the Main (Home) screen is displayed. This is the screen that shall be used most often and is described below in details.

Battery Indicator

Comm Error Indicator

Calendar Date

Alarm Indicator

Clock Time

Temperature Value

Status View Button

Map View Button

Temperature Setpoint (Optional Touch Button)

Tuning

Tune Status Indicator

%RH Value

%RH Setpoint (Optional Touch Button)

Set-up Mode Button

Door Open Button

ALARM INDICATOR

This icon appears if one or more process alarms are active. The Alarm Relay gets activated whenever any alarm becomes active. The user can acknowledge the alarm (de-activate the relay) by touching this icon.

BATTERY INDICATOR

This icon appears if the Mains power has failed and the controller is currently powered through an auxiliary power source like Battery or Inverter.

COMM ERROR INDICATOR This icon appears if the HMI communication link with the Control Unit, Mapping Unit or GSM Module is broken. Upon touching

this icon a message window pops up showing which communication link(s) is broken.

CALENDER DATE & CLOCK TIME These two fields show the current date (DD/MM/YY) & time (HH:MM:SS, 24 Hours format), respectively.

TEMPERATURE VALUE & %RH VALUE

These two fields show the Temperature & %RH Process Values in 0.1 °C / %RH resolution. In case of errors the field shows OPEN (Sensor Open), OVER (Process Value above Max Range), UNDR (Process Value below Min Range). The Process Values are shown in Black color under normal condition. The Error Messages are shown in Red color.

TEMPERATURE SETPOINT & %RH SETPOINT

These two fields show the Temperature & %RH Set Values (SP) in 0.1 °C / %RH resolution. If enabled, these values can be edited by touching the respective field. Upon touching a Numeric Keypad pops up for setting.

TUNE STATUS INDICATOR

This text appears if the controller is self tuning the temperature and / or %RH control loop.

STATUS VIEW BUTTON

This a touch button that enables navigation through various process status screens. The Screens are shown below.

HumiTherm Ultra User Manual

Process Status Screen

This screen shows various rocess Alarm status and the information regarding working / fa ure of p il various Main and Standby Sensors (Temperature & %RH) & Control Gadgets (Air Heater, Boiler Heater & Compressor). The contents on this screen are dependent on whether Standby Sensors and / or Standby Control Gadgets are installed or not. Accordingly the following four variants of this screen exist:

1. Alarm Only

2. Alarm + Standby Sensor

3. Alarm + Standby Control

4. Alarm + Standby Sensor + Standby Control

Alarm Only

Touch Button to go to Home (Main) Screen

Touch Button to go to Next Screen

Touch Button to Acknowledge Alarm

Alarm + Standby Control

Touch Button to go to Previous Screen

Alarm + Standby Sensor

Alarm + Standby Sensor + Standby Control

HumiTherm Ultra User Manual

Output Status

This screen shows :

w Heating & Humidification % output power w On-Off Status for Main & Standby (if installed) Air Heater, Boiler Heater (Humidifier) & Compressor w Alarm Relay Status

Record Status

Th rage capacity, numbers of current stored records and available free space.is screen shows the total record sto

SMS Status

This screen shows the status related to GSM Module (if installed).

5000

4999

HumiTherm Ultra User Manual

MAP VIEW BUTTON

This is a touch button that opens up screen(s) to view process values for mapping s. The installed mapping s could input input be 8 (4 Map Points : 4T + 4RH) or 16 (8 8T + 8RH) and accordingly 1 or 2 screens displayed. Note that this Map Points : are touch button is not available if no mapping inputs are installed. The Screens are shown below.

Appears for both 8 & 16 Map Inputs

22.0

57.5

25.1

60.8

DOOR OPEN BUTTON

If the Humidity cabinet is equipped with Door Lock, this touch button opens a screen that allows password entry for unlocking the cabinet door by authorised person. Also the authorised person’s identity is logged for audit purpose.

24.8

61.2

27.2

62.3

Appears for 16 Map Inputs only

25.0

59.6

25.2

60.8

24.7

60.2

25.3

60.1

SET-UP MODE BUTTON

This touch button opens a screen that allows access to Operator, Supervisory or Factory Level parameter settings through appropriate password entry. 4 character

The Factory default passwords are as below :

Access Level

Operator

Supervisory

Factory

Default Password

0000

0001

0002

HumiTherm Ultra User Manual

Upon touching one of the levels, a keyboard for password entry pops-up as shown below.

The user must touch the text screen to make it editable. Upon touch the text screen shows a blue band as shown below.

Text Screen

****

Non Editable

Editable after touch

****

Password entry on

editable text Screen

While the screen is editable, type 4 character password & then press ENTER Key. If the password is correct, the parameter setting screen opens up. Use ESC key (in case password is not known) to pop down the key pad.

Once an access level is entered, the user can change the password for that level as shown below as an example for operator level.

25.0

2.0

60.0

2.0

0005

HumiTherm Ultra User Manual

Each access level may have sub levels for convenient parameter grouping. The Table . lists various parameters with levels 4 1 and sub levels.

Table 4.1

Level

Operator

Supervisory

Recording

Clock & Calendar

SMS

SMS Alert

Door Lock Access

Standby Switching

Sub-Level

Parameters

Temperature

Set Value Low Deviation Alarm High Deviation Alarm

%RH Set Value Low Deviation Alarm High Deviation Alarm

SP Edit on Home Screen

Recording Interval ‘Delete Record’ Command

Calendar Date (DD/MM/YY) Clock Time (HH:MM:SS)

GSM Machine ID Reset GSM Module

Lock Position (On / Off) Password Entry

‘Switch Main / Standby Outputs’ ‘Switch to Standby Sensors’

Factory

Maintenance

Temperature

%RH

Input Settings

Alarm Settings

Control Settings

Input Settings

Alarm Settings

Control Settings

Repair Acknowledge ‘Control Gadget’ Repair Acknowledge ‘Input Sensor’

Input Type, Signal Range Low, Signal Range High, Display Range Low, Display Range High, Zero Offset

Inhibit (Yes / No), Low Alarm Deviation, High Alarm Deviation, Hysteresis

Heat Zone PID Constants, Cool Zone PID Constants, Output Cycle Time (Sec.), Control SP Setpoint Low Limit, Setpoint High Limit Self Tune

Input Type, Signal Range Low, Signal Range High, Display Range Low, Display Range High, Zero Offset

Inhibit (Yes / No), Low Alarm Deviation, High Alarm Deviation, Hysteresis

Heat Zone PID Constants, Cool Zone PID Constants, Output Cycle Time (Sec.), Control SP Setpoint Low Limit, Setpoint High Limit Self Tune

HumiTherm Ultra User Manual

Level

Factory

Compressor

Water Level

Door Open

Power Fail

Standby

Sub-Level

Sensor Inputs

Control Gadgets

Parameters

Mode (ON, OFF, PV Based, SP Based), Boundary SP or Compressor SP, Time Delay, Hysteresis Zone Select (Single, Dual)

Float Detection Enable (Yes / No), Low Level Logic (Open / Close)

Thermostat Detection Enable (Yes / No), Low Level Logic (Open / Close)

Common Boiler (Yes / No)

Detection Enable (Yes / No), Door Open Logic (Open / Close), Alarm Delay (Sec.)

Detection Enable (Yes / No), Power Fail Logic (Open / Close)

Sensor Fail Detection Limits

Fail Detect Time (Min) Cyclic Time (Hrs.) Inhibit Time (Hrs.)

Mapping

Configuration

Temperature

%RH

Alarm Settings

Input Settings

Alarm Settings

Input Settings

Select Mapping Inputs (4T + 4RH, 8T + 8RH)

Low Alarm (Common for all Inputs) Set Value, Hysteresis, Inhibit

High Alarm (Common for all Inputs) Set Value, Hysteresis, Inhibit

Input Type, Range Low, Range High, Zero Offset

Low Alarm (Common for all Inputs) Set Value, Hysteresis, Inhibit

High Alarm (Common for all Inputs) Set Value, Hysteresis, Inhibit

Input Type, Range Low, Range High, Zero Offset

HumiTherm Ultra User Manual

PARAMETER SETTINGS There are 3 types of parameters; Numeric, String Option and Commands. The setting methods for different types are

described below.

Numeric Parameters

This type of parameter has 2 fields; & as shown in the figure. The value for this type of parameter is set Name Field Value Field using a Numeric keypad that pops up upon touching the for the parameter. The value can be edited using numeric Value Field keys & other functional keys as shown in the figure. Use ENT key for storing the new value or use ESC key to revert without changes. Touching ENT or ESC key, the keypad automatically collapses.

Note that if the modified value falls outside the Minimum or Maximum limits specified for the parameter value then the parameter retains the old value.

Name Field Value Field

String Option Parameters This type of parameter has 2 or more fixed options to choose from. All the options are shown in rectangular boxes with

appropriate texts as shown in the figure. Only one of the several options can be selected. The selected option box is shown in bright ( ) color, while all other unselected options are shown in dark ( ) color. For selecting the desired option. just touch the box and wait for a while until the color changes from unselected to selected.

Selected Option

Unselected Options

HumiTherm Ultra User Manual

Command Parameters This type of parameter is used to perform specific actions like Start / Abort tuning, Delete Records, etc. A touch Push Button

image is provided for issuance of command as shown in the figure. Usually an acknowledgment window with OK button pops up to indicate the action performed. The window collapses upon touching the OK button.

ALARM MESSAGE WINDOWS

For the Alarms related to gadget or sensor failure, door open detection, low water level detection, etc.; message windows are popped up on the Main (Home) Screen showing the cause of alarm and action taken by the controller. The figure below shows, for example, the message screen that pops up when the controller detects Main Sensor Set Failure & changes over to the Standby Set.

HumiTherm Ultra User Manual

Section 5

OPERATOR LEVEL PARAMETERS

Operator

25.0

2.0

Temperature Set Value

Range : Temperature Setpoint ow imit to Temperature Setpoint High LimitL L Default : 25.0 °C

This is the Setpoint Value for temperature control loop. This value can also be set on home screen if enabled through the parameter SP Edit on Home Screen.

Temperature Low Deviation Alarm

Range : 0.2 to 99.9 °C Default : 2.0 °C

This Parameter sets a Negative Deviation (offset) limit with respect to the ‘ ’. The Alarm is activated if the Temperature Set Value measured temperature value falls below this limit.

60.0

2.0

Temperature High Deviation Alarm

Range : 0.2 to 99.9 °C Default : 2.0 °C

This Parameter sets a Positive Deviation (offset) limit with respect to the ‘ ’. The Alarm is activated if the Temperature Set Value measured temperature value exceeds this limit.

%RH Set Value

Range : %RH Setpoint Low Limit to %RH Setpoint High Limit Default : 60.0 %

This is the Setpoint Value for %RH control loop. This value can also be set on home screen if enabled through the parameter SP Edit on Home Page.

%RH Low Deviation Alarm

Range : 0.2 to 99.9 % Default : 2.0 %

This Parameter sets a Negative Deviation (offset) limit with respect to the ‘ ’. The Alarm is activated if the %RH Set Value measured %RH value falls below this limit.

HumiTherm Ultra User Manual

%RH High Deviation Alarm

Range : 0.2 to 99.9 % Default : 2.0 %

This Parameter sets a Positive Deviation (offset) limit with respect to the ‘ ’. The Alarm is activated if the %RH Set Value measured %RH value exceeds this limit.

SP Edit on Home Screen This parameter allows to Enable or Disable the set editing for both temperature & %RH on Home (Main) Screen. If value

Enabled, the temperature & %RH set values can be edited by touching the receptive indicated values on the ome creen.H S

HumiTherm Ultra User Manual

Section 6

SUPERVISORY LEVEL PARAMETERS

Supervisory Recording

Recording Interval

Range : 1 to 250 Minutes Default : 5 Minutes

The Controller generates and stores periodic records at the interval set by this parameter.

‘Delete Record’ Command

This command is issued using the touch push button. All the stored records are deleted from the memory.

Supervisory

Clock & Calendar

2016

212112

Operate this touch button to register new Date / Time

Calendar Date Clock Time

The Calendar Date is set using 3 separate fields; Date (DD), Month (MM) & Year (YY). The Clock Time is set in 24 Hours format using 3 separate fields; Hours (HH), Minutes (MM) & Seconds (SS). It is a must to operate the ‘Apply’ touch button in order to register the modified values.

HumiTherm Ultra User Manual

Supervisory

SMS

SMS Alert

(Available only if the controller is supplied with GSM Module Version)

GSM Machine ID

Range : 1 to 128 Default : 1

This parameter can be used to assigned a unique ID to the machine (chamber) to identify the source of SMS alert.

‘Reset GSM Module’

Use this touch button if for any reason the GSM module fails to send SMS alerts.

Supervisory

Door Lock Access

USER1234

USER1234 ABCDEFGH

12345678

Valid Password entries

Unused IDs

Key for registering New Password entry

Key for Deleting an existing Password entry

HumiTherm Ultra User Manual

Lock Position Options : Solenoid O , Solenoid ON FF Default : Solenoid OFF Set this parameter to ‘Solenoid ON’, if the chamber door is locked when the solenoid is turned ON (energized). Set this

parameter to ‘Solenoid OFF’, if the chamber door is locked when the solenoid is turned OFF (de-energized).

Password Entry The Supervisor can Authorize up to 7 Persons by assigning them their respective . A 8 Character Alpha-Numeric Password

table with 2 columns (ID & PASSWORD) is provided for password entries. The ID numbers are fixed from 1 to 7 and correspond to the made in the PC Software (HumiLog). The Password against each ID can be entered / edited / Name Entries deleted by touching the table cell provided for the ID. Upon touching the cell, an alpha numeric keypad pops up. Use alpha numeric keys to assign a new password (or edit the existing password) and then press ENTER key. To delete an exiting password use CLR key and then press ENTER key. The passwords can be entered / deleted in any order of ID. The password fields for unused Ids must be cleared (empty).

Supervisory

Standby Switchings

Switch Main / Standby Outputs

If the controller is installed with standby control gadget set, the user can manually switch between the Main and the Standby set by using the touch push button. The switching is permitted / performed only if both sets are working.

Switch to Standby Sensors

If the controller is installed with Standby Sensor set, the user can manual switch to the Standby set if he detects failure of either temperature or RH sensor from Main set. The switching is permitted / performed only if the Standby Sensor set is working.

HumiTherm Ultra User Manual

Supervisory

Maintenance

Repair Acknowledge

In case the control system is installed with standby set of sensors and / or control gadgets, the controller automatically switches to the Standby set should any of the sensors / control gadgets of the Main set fail. After fixing the fault / failure, the user must acknowledge the same to the controller for resuming the operation with the main set. The following touch buttons are provided for the purpose depending on the standby installation.

HumiTherm Ultra User Manual

Section 7

FACTORY LEVEL PARAMETERS

Temperature

Input Type

Options RTD Pt100, 0 to 20 mA, 4 to 20 mA, 0 to 5 V, 0 to 10 V, 1 to 5 V : Default : RTD Pt100

Select Input type in accordance with the type of Temperature sensor / transmitter connected for measurement.

Signal Range Low

(Available for DC Linear Volts & mA Inputs only)

Input SettingsFactory

Input Type

0 to 20 mA

4 to 20 mA

0 to 5 V

0 to 10 V

1 to 5 V

This parameter is the transmitter output signal value that corresponds to the Range Low process value. Refer Appendix-A : DC Linear Signal Interface for details.

Signal Range High

(Available for DC Linear Volts & mA Inputs only)

Input Type

0 to 20 mA

4 to 20 mA

0 to 5 V

0 to 10 V

1 to 5 V

Settings

0.00 to Signal High

4.00 to Signal High

0.000 to Signal High

0.00 to Signal High

1.000 to Signal High

Settings

Signal Low to 20.00

Signal Low to 5.000

Signal Low to 10.00

Signal Low to 5.000

Default

0.00

4.00

0.000

0.00

1.000

Default

20.00

5.000

10.00

5.000

This parameter is the transmitter output signal value that corresponds to the Range High process value. Refer Appendix-A : DC Linear Signal Interface for details.

HumiTherm Ultra User Manual

Display Range Low

(Available for DC Linear Volts & mA Inputs only) Range : -199.9 to Range High Default : 0.0 This parameter is the rocess alue that correspond to the Signal Low value fromP V s the transmitter. Refer Appendix-A : DC

Linear Signal Interface for details.

Display Range High

(Available for DC Linear Volts & mA Inputs only) Range : Range Low to 999.9 Default : 100.0 Th Process alue that correspond to the Signal High value from the transmitter. is parameter is the V s Refer Appendix-A : DC

Linear Signal Interface for details.

Zero offset

Range : -50.0 to 50.0 °C Default : 0.0 °C

This value is algebraically added to the measured Temperature Value to derive the final Value that is displayed and compared for alarm / control. Use this value to nullify any known constant error.

Final Value = Measured Value + Offset

Factory

Temperature

Alarm Settings

5.0

2.0

Inhibit

Options Enable, Disable : Default : Enable

If this parameter is set to ‘ ’, the Alarm activation is suppressed until the Temperature value is within Alarm limits from the Enable time the controller is switched ON. This allows suppressing the Alarm during the start-up Alarm conditions.

If this parameter is set to ‘Disable’, the Alarm is not suppressed during the start-up Alarm conditions.

HumiTherm Ultra User Manual

Low Alarm Deviation

Range : 0.2 to 99.9 °C Default : 2.0 °C

This parameter sets the maximum permissible process value deviation the temperature setpoint. If the temperature below exceeds this deviation, the alarm is activated.

High Alarm Deviation

Range : 0.2 to 99.9 °C Default : 2.0 °C

This parameter sets the maximum permissible process value deviation the temperature setpoint. If the temperature above exceeds this deviation, the alarm is activated.

Hysteresis

Range : 0.1 to 99.9 Default : 0.2

This parameter sets a differential (dead) band between the ON and OFF emperature Deviation Alarm status change. Keep it T large enough to avoid frequent switching of the Alarm Status/Relay.

Factory

Temperature

50.0

Control Settings

50.0

25.0

100

0.0

100.0

10.0

The control settings for temperature comprises of two screens shown above. Also the first screen parameters change depending on the selection for the parameter ‘Zone elect’ (Single or Dual) provided on the screen “Compressor SS ettings”. The Cool Zone and Heat Appendix-B : Compressor Switching StrategiesZone are described in details in . The screen for parameters for Dual Zone is shown above and that for Single Zone is shown below.

50.0

100

10.0

HumiTherm Ultra User Manual

The PID Constants are described below.Dual Zone

Heat Zone Proportional Band

Range : 0.1 to 999.9 °C Default : 50.0 °C

Sets proportional gain for Heat Pre-dominant zone.

Heat Zone Integral Time

Range : 0 to 3600 Sec. Default : 100 Sec.

Sets integral time constant in Seconds for Heat Pre-dominant zone. Setting the value to 0, cuts-off integral action.

Heat Zone Derivative Time

Range : 0 to 600 Sec. Default : 16 Sec.

Sets derivative time constant in Seconds for Heat Pre-dominant zone. Setting the value to 0, cuts-off derivative action.

Cool Zone Proportional Band

Range : 0.1 to 999.9 °C Default : 50.0 °C

Sets proportional gain for Cool Pre-dominant zone.

Cool Zone Integral Time

Range : 0 to 3600 Sec. Default : 100 Sec.

Sets integral time constant in Seconds for Cool Pre-dominant zone. Setting the value to 0, cuts-off integral action.

Cool Zone Derivative Time

Range : 0 to 600 Sec. Default : 16 Sec.

Sets derivative time constant in Seconds for Cool Pre-dominant zone. Setting the value to 0, cuts-off derivative action.

The PID Constants are described below.Single Zone

Proportional Band

Range : 0.1 to 999.9 °C Default : 50.0 °C

Sets proportional gain.

Integral Time

Range : 0 to 3600 Sec. Default : 100 Sec.

Sets integral time constant in Seconds. Setting the value to 0, cuts-off integral action.

HumiTherm Ultra User Manual

Derivative Time

Range : 0 to 600 Sec. Default : 16 Sec.

Sets derivative time constant in Seconds. Setting the value to 0, cuts-off derivative action.

The parameters below are applicable to both & .Single Zone Dual Zone

Output Cycle Time (Sec.)

Range : 0.5 to 100.0 Sec. Default : 10.0 Sec.

Sets the total ‘On + Off’ time in seconds for time proportional power output for Air Heater through Relay / SSR.

Set Value (Temperature Control Loop)

Range : Temperature Setpoint Low Limit to Temperature Setpoint High Limit Default : 25.0

Sets Value for Temperature Control.

Low Limit (for Temperature Control Set Value)

Range : -199.9 to Temperature Setpoint High Limit Default : 10.0

Minimum permissible setpoint value for Temperature control.

High Limit (for Temperature Control Set Value)

Range : For RTD : Temperature Setpoint Low Limit to 600.0 For mA/V : Temperature Setpoint Low Limit to 999.9 Default : 60.0

Maximum permissible setpoint value for Temperature control.

Self Tune

This parameter is a command to Start or Abort Self Tuning for automatic computation of PID constants. The command starts or aborts self tuning for both temperature & %RH simultaneously. For Dual Zone setting, the controller needs to be tuned separately for Heat prominent & Cool Prominent zones.

Pressing the touch push button initiates tuning if the controller is already not tuning. However, if the controller is tuning, pressing the touch button causes the controller to abort tuning.

HumiTherm Ultra User Manual

%RH

Input Type

Options 0 to 20 mA, 4 to 20 mA, 0 to 5 V, 0 to 10 V, 1 to 5 V : Default : 0 to 5 V

Select Input type in accordance with the type of sensor / transmitter connected for measurement.%RH

Signal Range Low

Input SettingsFactory

Input Type

0 to 20 mA

4 to 20 mA

0 to 5 V

0 to 10 V

1 to 5 V

This parameter is the transmitter output signal value that corresponds to the Range Low process value. Refer Appendix-A : DC Linear Signal Interface for details.

Signal Range High

Input Type

0 to 20 mA

4 to 20 mA

0 to 5 V

0 to 10 V

1 to 5 V

This parameter is the transmitter output signal value that corresponds to the Range High process value. Refer Appendix-A : DC Linear Signal Interface for details.

Settings

0.00 to Signal High

4.00 to Signal High

0.000 to Signal High

0.00 to Signal High

1.000 to Signal High

Settings

Signal Low to 20.00

Signal Low to 5.000

Signal Low to 10.00

Signal Low to 5.000

Default

0.00

4.00

0.000

0.00

1.000

Default

20.00

5.000

10.00

5.000

HumiTherm Ultra User Manual

Display Range Low

Range : -199.9 to Range High Default : 0.0 This parameter is the rocess alue that correspond to the Signal Low value fromP V s the transmitter. Refer Appendix-A : DC

Linear Signal Interface for details.

Display Range High

Range : Range Low to 999.9 Default : 100.0 Th Process alue that correspond to the Signal High value from the transmitter. is parameter is the V s Refer Appendix-A : DC

Linear Signal Interface for details.

Zero offset

Range : -50.0 to 50.0 % Default : 0.0 %

This value is algebraically added to the measured Value to derive the final Value that is displayed and compared for %RH alarm / control. Use this value to nullify any known constant error.

Final Value = Measured Value + Offset

Factory Alarm Settings

%RH

5.0

2.0

Inhibit

Options Enable, Disable : Default : Enable

If this parameter is set to ‘ ’, the Alarm activation is suppressed until the value is within Alarm limits from the time Enable %RH the controller is switched ON. This allows suppressing the Alarm during the start-up Alarm conditions.

If this parameter is set to ‘Disable’, the Alarm is not suppressed during the start-up Alarm conditions.

Low Alarm Deviation

Range : 0.2 to 99.9 % Default : 2.0 %

This parameter sets the maximum permissible process value deviation the setpoint. If the exceeds this below %RH %RH deviation, the alarm is activated.

HumiTherm Ultra User Manual

High Alarm Deviation

Range : 0.2 to 99.9 % Default : 2.0 %

This parameter sets the maximum permissible process value deviation the setpoint. If the exceeds this above %RH %RH deviation, the alarm is activated.

Hysteresis

Range : 0.1 to 99.9 Default : 0.2

This parameter sets a differential (dead) band between the ON and OFF Deviation Alarm status change. Keep it large %RH enough to avoid frequent switching of the Alarm Status/Relay.

Factory Control Settings

%RH

50.0

25.0

100

0.0

100.0

10.0

The control settings for comprises of two screens shown above. Also the first screen parameters change depending on %RH the selection for the parameter ‘Zone elect’ (Single or Dual) provided on the screen “Compressor SS ettings”. The Cool Zone and Heat Appendix-B : Compressor Switching StrategiesZone are described in details in . The screen for parameters for Dual Zone is shown above and that for Single Zone is shown below.

50.0

100

10.0

HumiTherm Ultra User Manual

The PID Constants are described below.Dual Zone

Heat Zone Proportional Band

Range : 0.1 to 999.9 %RH Default : 50.0 %RH

Sets proportional gain for Heat Pre-dominant zone.

Heat Zone Integral Time

Range : 0 to 3600 Sec. Default : 100 Sec.

Sets integral time constant in Seconds for Heat Pre-dominant zone. Setting the value to 0, cuts-off integral action.

Heat Zone Derivative Time

Range : 0 to 600 Sec. Default : 16 Sec.

Sets derivative time constant in Seconds for Heat Pre-dominant zone. Setting the value to 0, cuts-off derivative action.

Cool Zone Proportional Band

Range : 0.1 to 999.9 %RH Default : 50.0 %RH

Sets proportional gain for Cool Pre-dominant zone.

Cool Zone Integral Time

Range : 0 to 3600 Sec. Default : 100 Sec.

Sets integral time constant in Seconds for Cool Pre-dominant zone. Setting the value to 0, cuts-off integral action.

Cool Zone Derivative Time

Range : 0 to 600 Sec. Default : 16 Sec.

Sets derivative time constant in Seconds for Cool Pre-dominant zone. Setting the value to 0, cuts-off derivative action.

The PID Constants are described below.Single Zone

Proportional Band

Range : 0.1 to 999.9 %RH Default : 50.0 %RH

Sets proportional gain.

Integral Time

Range : 0 to 3600 Sec. Default : 100 Sec.

Sets integral time constant in Seconds. Setting the value to 0, cuts-off integral action.

HumiTherm Ultra User Manual

Derivative Time

Range : 0 to 600 Sec. Default : 16 Sec.

Sets derivative time constant in Seconds. Setting the value to 0, cuts-off derivative action.

The parameters below are applicable to both & .Single Zone Dual Zone

Output Cycle Time (Sec.)

Range : 0.5 to 100.0 Sec. Default : 10.0 Sec.

Sets the total ‘On + Off’ time in seconds for time proportional power output for Air Heater through Relay / SSR.

Set Value ( Control Loop)%RH

Range : Setpoint Low Limit to Setpoint High Limit%RH %RH Default : 25.0

Sets Value for Control.%RH

Low Limit (for %RH Control Set Value)

Range : . to Setpoint High Limit0 0 %RH Default : 0.0

Minimum permissible setpoint value for control.%RH

High Limit (for %RH Control Set Value)

Range : %RH Setpoint Low Limit to 100.0 Default : 0.010

Maximum permissible setpoint value for control.%RH

Self Tune

This parameter is a command to Start or Abort Self Tuning for automatic computation of PID constants. The command starts or aborts self tuning for both %RH & temperature simultaneously. For Dual Zone setting, the controller needs to be tuned separately for Heat prominent & Cool Prominent zones.

Pressing the touch push button initiates tuning if the controller is already not tuning. However, if the controller is tuning, pressing the touch button causes the controller to abort tuning.

HumiTherm Ultra User Manual

Factory

Compressor

For detailed description and functioning of the parameters related to compressor operation, refer

Appendix-B : Compressor Switching Strategies.

Mode

Options FF N : Continuous O , Continuous O , SP Based ON-OFF, PV Based ON-OFF Default : Continuous OFF

Compressor SP

Range : 0.0 to 100.0 Default : .045

Boundary SP

Range : 0.0 to 100.0 Default : .0 45

Time Delay

Range : 0 to 1000 Sec. Default : 200 Sec.

Hysteresis

Range : 0.1 to 99.9 °C Default : 2.0 °C

Zone Select

Options : Single, Dual Default : Single

HumiTherm Ultra User Manual

Factory

Water Level

Float Detection Enable

Options No, Yes : Default : No

Set to ‘Yes’ if Float Switch is mounted for detecting Low water level.

Float Low Level Logic

Options : Switch Open, Switch Close Default : Switch Close

If set to ‘Switch Close’, the water level is considered Low if the switch is CLOSE. If set to ‘Switch Open’, the water level is considered Low if the switch is OPEN.

Thermostat Detection Enable

Options No, Yes : Default : No

Set to ‘Yes’ if Thermostat is mounted for detecting Low water level.

Thermostat Low Level Logic

Options : Switch Open, Switch Close Default : Switch Close

If set to ‘Switch Close’, the water level is considered Low if the thermostat contacts are CLOSE. If set to ‘Switch Open’, the water level is considered Low if the thermostat contacts are OPEN.

Common Boiler

Options : No, Yes Default : No

This parameter is shown on the screen only if Standby Control Gadget option is enabled / installed. Set this parameter to ‘Yes’ if both, Main and Standby, heaters are mounted in a single steam generating boiler. In this case, only a single pair of Float Switch & Thermostat is used and connected to Main Digital Inputs.

HumiTherm Ultra User Manual

Factory

Door Open

Detection Enable

Options No, Yes : Default : No

Set to ‘Yes’ if Door Open detection switch is mounted.

Door Open Logic

Options : Switch Open, Switch Close Default : Switch Close

If this parameter is set to ‘Switch Close’, the door is detected as if the switch is CLOSE. If this parameter is set to ‘Switch Open Open’, the door is detected as if the switch is OPEN.Open

Alarm Delay (Sec.)

Range : 0 to 1000 Sec. Default : 60 Sec.

This parameter sets a timer. From the time the door is opened, the timer begins counting down. If the door is not closed before the timer reaches 0, the alarm is activated.Door Open

Factory

Power Fail

HumiTherm Ultra User Manual

Detection Enable

Options No, Yes : Default : No

Set to ‘Yes’ if provision is made for running the controller on an auxiliary power sources like battery or inverter and a Switch is mounted for detecting main power source failure.

Power Fail Logic

Options : Switch Open, Switch Close Default : Switch Close

If set to ‘Switch Close’, the CLOSE witch position indicates that the Mains Power has failed and the Controller is operating on s auxiliary power source. If set to ‘Switch Open’, the OPEN switch position indicates that the Mains Power has failed and the Controller is operating on auxiliary power source.

Factory Standby

Sensor Inputs

These parameters are particularly useful when sensors with DC Volts / Current Outputs are used for measuring temperature and / or %RH.

Temperature Low Limit for Sensor Fail Detection

Range : 0 to 25.0 °C Default : 0 °C

This parameter should be set to a value below which the temperature is not likely to fail under normal conditions. In case of sensor open / fail, the output signal will generally fall to minimum level corresponding to Low Process Value. This condition is detected as sensor fail & the controller switches to alternate set of sensors.

%RH Low Limit for Sensor Fail Detection

Range : 0 to 60.0 % Default : 0 %

Description is same as for “Temperature Low Limit for Sensor Fail Detection”.

HumiTherm Ultra User Manual

Factory

Standby Control Gadgets

Fail Detect Time (Min)

Range : 0 to 250 Min. Default : 10 Min

This parameter sets a timer. If either temperature or %RH process value exceeds “High Alarm Deviation” limit, the timer starts counting down. If the process value does not return below the “High Alarm Deviation” limit before the timer reaches 0, the working control gadget set is detected as failed. The controller then switches to the alternate control gadget set.

Cyclic Time (Hrs.)

Range : 0 to 500 Hrs. Default : 48 Hrs.

If both, Main & Standby, control gadget sets are in working condition, the controller keeps switching between these two sets periodically with a time interval set by this parameter value.

Inhibit Time (Hrs.)

Range : 0 to 250 Hrs. Default : 1 Hrs.

This parameter sets a time interval for which the controller stops monitoring the control gadget fail detection condition (described under parameter “Fail Detect Time”). This time interval is usually applied under following conditions.

1. System is powered (Start Up)

2. Change-over from Auxiliary Power source (Battery / Inverter) to Mains Power

3. After recovery from Door Open Alarm

4. Change-over from Main to Standby Control gadget Set or vice-a-versa

This feature suppresses false detection of control gadget failure.

HumiTherm Ultra User Manual

Factory

Mapping Configuration

Select Mapping Inputs

Options : 4T + 4RH, 8T + 8RH Default : 4T + 4RH

Select this parameter depending upon whether 8 input (4 Temperature + 4 %RH) or 16 input (8 Temperature + 8 %RH) unit is installed for mapping.

Factory Mapping

Temperature

Alarm Settings

Low Alarm Set Value

Range : -199.9 to 600.0 °C Default : 0 °C

This parameter sets a Temperature value limit which an alarm is generated. common below

Low Alarm Hysteresis

Range : 0.1 to 50.0 °C Default : 2.0 °C

This parameter sets a differential (dead) band between the ON and OFF Low Temperature Alarm status change. Keep it large enough to avoid frequent switching of the Alarm Status/Relay.

Low Alarm Inhibit

Options : Enable, Disable Default : Disable

If this parameter is set to ‘Enable’, the Alarm activation is suppressed until the Temperature value is above the Low Alarm Set Value from the time the controller is switched ON. This allows suppressing the Alarm during the start-up Alarm conditions.

HumiTherm Ultra User Manual

If this parameter is set to ‘Disable’, the Alarm is not suppressed during the start-up Alarm conditions.

High Alarm Set Value

Range : -199.9 to 600.0 °C Default : 0 °C

This parameter sets a Temperature value limit which an alarm is generated. common above

High Alarm Hysteresis

Range : 0.1 to 50.0 °C Default : 2.0 °C

This parameter sets a differential (dead) band between the ON and OFF High Temperature Alarm status change. Keep it large enough to avoid frequent switching of the Alarm Status/Relay.

High Alarm Inhibit

Options : Enable, Disable Default : Disable

If this parameter is set to ‘Enable’, the Alarm activation is suppressed until the Temperature value is below the High Alarm Set Value from the time the controller is switched ON. This allows suppressing the Alarm during the start-up Alarm conditions.

If this parameter is set to ‘Disable’, the Alarm is not suppressed during the start-up Alarm conditions.

Factory Mapping

Temperature

0.0

100.0

Input Settings

All the arameter settings, except Zero Offset, on this screen are Common for all p Temperature Inputs.

Input Type

Options RTD Pt100, 0 to 20 mA, 4 to 20 mA, 0 to 50 mV, 0 to 200 mV, 0 to 1.25 V, 0 to 5 V, : 1 to 5 V, 0 to 10 V Default : RTD Pt100

Select Input type in accordance with the type of Temperature sensor / transmitter connected for measurement.

Signal Range Low

(Available for DC Linear Volts & mA Inputs only)

HumiTherm Ultra User Manual

Input Type

0 to 20 mA

4 to 20 mA

0 to 50 mV

0 to 200 mV

0 to 1.25 V

0 to 5 V

1 to 5 V

0 to 10 V

This parameter is the transmitter output signal value that corresponds to the Range Low process value. Refer Appendix-A : DC Linear Signal Interface for details.

Signal Range High

(Available for DC Linear Volts & mA Inputs only)

Input Type

0 to 20 mA

4 to 20 mA

0 to 50 mV

0 to 200 mV

0 to 1.25 V

0 to 5 V

1 to 5 V

0 to 10 V

Settings

0.00 to Signal High

4.00 to Signal High

0.00 to Signal High

0.0 to Signal High

0.000 to Signal High

1.000 to Signal High

0.00 to Signal High

Settings

Signal Low to 20.00

Signal Low to 50.00

Signal Low to 200.0

Signal Low to 1.250

Signal Low to 5.000

Signal Low to 10.00

Default

0.00

4.00

0.00

0.0

0.000

1.000

0.00

Default

20.00

50.00

200.0

1.250

5.000

10.00

This parameter is the transmitter output signal value that corresponds to the Range High process value. Refer Appendix-A : DC Linear Signal Interface for details.

Display Range Low

(Available for DC Linear Volts & mA Inputs only) Range : -199.9 to Range High Default : 0.0

This parameter is the Process Value that corresponds to the Signal Low value from the transmitter (0 mA or 0 mV or 0/1 V).

Display Range High

(Available for DC Linear Volts & mA Inputs only) Range : Range Low to 999.9 Default : 100.0

This parameter is the Process Value that corresponds to the Signal High value from the transmitter (20 mA or 50/200 mV or 5/10V).

Zero Offset

Range : -50.0 to 50.0 °C Default : 0.0 °C

This parameter value is individually set for each Temperature Input (4 8). This value is algebraically added to the measured or Temperature Value to derive the final Value that is displayed and compared for alarm / control. Use this value to nullify any known constant error.

Final Value = Measured Value + Offset

HumiTherm Ultra User Manual

Factory Mapping Alarm Settings

%RH

Low Alarm Set Value

Range : 0 to 100.0 %RH Default : 0 %RH

This parameter sets a value limit which an alarm is generated. common %RH below

Low Alarm Hysteresis

Range : 0.1 to 50.0 %RH Default : 2.0 %RH

This parameter sets a differential (dead) band between the ON and OFF Low Alarm status change. Keep it large enough %RH to avoid frequent switching of the Alarm Status/Relay.

Low Alarm Inhibit

Options : Enable, Disable Default : Disable

If this parameter is set to ‘Enable’, the Alarm activation is suppressed until the value is above the Low Alarm Set Value %RH from the time the controller is switched ON. This allows suppressing the Alarm during the start-up Alarm conditions. If this parameter is set to ‘Disable’, the Alarm is not suppressed during the start-up Alarm conditions.

High Alarm Set Value

Range : 0 to 100.0 %RH Default : 0 %RH

This parameter sets a value limit which an alarm is generated. common %RH above

High Alarm Hysteresis

Range : 0.1 to 50.0 %RH Default : 2.0 %RH

This parameter sets a differential (dead) band between the ON and OFF High Alarm status change. Keep it large enough %RH to avoid frequent switching of the Alarm Status/Relay.

High Alarm Inhibit

Options : Enable, Disable Default : Disable

If this parameter is set to ‘Enable’, the Alarm activation is suppressed until the value is below the High Alarm Set Value %RH from the time the controller is switched ON. This allows suppressing the Alarm during the start-up Alarm conditions. If this parameter is set to ‘Disable’, the Alarm is not suppressed during the start-up Alarm conditions.

HumiTherm Ultra User Manual

Factory Mapping Input Settings

%RH

0.0

100.0

All the arameter settings, except Zero Offset, on this screen are Common for all p %RH Inputs.

Input Type

Options : 0 to 20 mA, 4 to 20 mA, 0 to 50 mV, 0 to 200 mV, 0 to 1.25 V, 0 to 5 V, 1 to 5 V, 0 to 10 V Default : 0 to 5 V

Select Input type in accordance with the type of sensors / transmitters connected for measurement on all %RH Inputs.

Signal Range Low

(Available for DC Linear Volts & mA Inputs only)

Input Type

0 to 20 mA

4 to 20 mA

0 to 50 mV

0 to 200 mV

0 to 1.25 V

0 to 5 V

1 to 5 V

0 to 10 V

Settings

0.00 to Signal High

4.00 to Signal High

0.00 to Signal High

0.0 to Signal High

0.000 to Signal High

1.000 to Signal High

0.00 to Signal High

Default

0.00

4.00

0.00

0.0

0.000

1.000

0.00

This parameter is the transmitter output signal value that corresponds to the Range Low process value. Refer Appendix-A : DC Linear Signal Interface for details.

Signal Range High

(Available for DC Linear Volts & mA Inputs only)

HumiTherm Ultra User Manual

Input Type

0 to 20 mA

4 to 20 mA

0 to 50 mV

0 to 200 mV

0 to 1.25 V

0 to 5 V

1 to 5 V

0 to 10 V

This parameter is the transmitter output signal value that corresponds to the Range High process value. Refer Appendix-A : DC Linear Signal Interface for details.

Display Range Low

Range : .0 % to Range High0 Default : 0.0 %

This parameter is the Process Value that corresponds to the Signal Low value from the transmitter ( ).0 mA or 0 mV or 0/1 V

Display Range High

Range : Range Low to .100 0 % Default : 100.0 %

This parameter is the Process Value that corresponds to the Signal High value from the transmitter (20 mA or 50/200 mV or 5/10V).

Settings

Signal Low to 20.00

Signal Low to 50.00

Signal Low to 200.0

Signal Low to 1.250

Signal Low to 5.000

Signal Low to 10.00

Default

20.00

50.00

200.0

1.250

5.000

10.00

Zero Offset

Range : -50.0 to 50.0 % Default : 0.0 %

This parameter value is individually set for each Input (4 8). This value is algebraically added to the measured %RH or %RH Value to derive the final Value that is displayed and compared for alarm / control. Use this value to nullify any known constant error.

Final Value = Measured Value + Offset

HumiTherm Ultra User Manual

APPENDIX - A

DC LINEAR SIGNAL INTERFACE

This appendix describes the parameters required to interface process transmitters that produce Linear DC Voltage (mV/V) or Current (mA) signals in proportion to the measured process values. A few examples of such transmitters are;

1. Pressure Transmitter producing for 4 to 20 mA 0 to 5 psi

2. Relative Humidity Transmitter producing for 1 to 4.5 V 5 to 95 %RH

3. Temperature Transmitter producing for 0 to 20 mA -50 to 250 °C

The instrument (indicator/controller/recorder) that accepts the linear signal from the transmitter computes the measured process value by solving the mathematical equation for Straight-Line in the form:

Y = mX + C Where;

X : Signal Value from Transmitter

Y : Process Value Corresponding to Signal Value X

C : Process Value Corresponding to X = 0 (Y-intercept)

m : Change in Process Value per unit Change in Signal Value (Slope)

Process Value

Y = mX + C

m = / ΔY ΔX

Transmitter Signal

ΔY

ΔX

As is evident from the aforementioned transmitter examples, different transmitters produce signals varying both in Type (m /V/mA) and . Most PPI instruments, thus, provide programmable Signal Type and Range to facilitate interface with V Range a variety of transmitters. A few industry standard signal types and ranges offered by the PPI instruments are: 0-50mV, 0200mV, 0-5 V, 1-5 V, 0-10V, 0-20 mA, 4-20 mA, etc.

Also, the output signal range (e.g. 1 to 4.5 V) from different transmitters corresponds to different process value range (e.g. 5 to 95 %RH); the instruments thus also provide facility for programming the measured process value range with programmable Resolution.

The linear transmitters usually specify two signal values (Signal Low and Signal High) and the corresponding Process Values (Range Low and Range High). In the example Pressure Transmitter above; the Signal Low, Signal High, Range Low & Range High values specified are: 4 mA, 20 mA, 0 psi & 5 psi, respectively.

In summary, the following 6 parameters are required for interfacing Linear Transmitters:

1. Input Type : Standard DC Signal Type in which the transmitter signal range fits (e.g. 4-20 mA)

2. Signal Low : Signal value corresponding to Range Low process value (e.g. 4 mA)

3. Signal High : Signal value corresponding to Range High process value (e.g. 20 mA)

4. PV Resolution : Resolution (least count) with which to compute process value (e.g. 0.01)

5. Range Low : Process value corresponding to Signal Low value (e.g. 0.00 psi)

6. Range High : Process value corresponding to Signal High value (e.g. 5.00 psi)

HumiTherm Ultra User Manual

The following examples illustrate appropriate parameter value selections.

Example 1: Pressure Transmitter producing for 4 to 20 mA 0 to 5 psi

Y (psi)

Presume the pressure is to be measured

Range High

5.00

with 0.01 Resolution, that is 0.00 to 5.00 psi.

Input Type : 4-20 mA Signal Low : 4.00 mA Signal High : 20.00 mA PV Resolution : 0.01

Range Low

0.00

4.00 20.00

Signal Low Signal High

X (mA)

Range Low : 0.00 Range High : 5.00

Example 2: Relative Humidity Transmitter producing for 1 to 4.5 V 5 to 95 %RH

Y (% RH)

Presume the humidity is to be measured with 0.1 Resolution, that is 0.0 to 100.0 %.

Range High

95.0

Input Type : 0-5 V Signal Low : 1.000 V Signal High : 4.500 V

Range Low

5.0

0 5

1.000 4.500

Signal Low Signal High

X (V)

PV Resolution : 0.1 Range Low : 5.0 Range High : 95.0

Example 3: Temperature Transmitter producing for 0 to 20 mA -50 to 250 °C

Y (°C)

Range High

250.0

Presume the Temperature is to be measured with 0.1 Resolution, that is -50.0 to 250.0°C.

Input Type : 0-20 mA Signal Low : 0.00 mA Signal High : 20.00 mA PV Resolution : 0.1

Range Low

-50.0

0.00 Signal Low

20.00

Signal High

X (mA)

Range Low : -50.0 Range High : 250.0

HumiTherm Ultra User Manual

The following table list various parameters related to DC linear signal input interface & their respective locations.

Parameter Name

Main & Standby Temperature Control Sensors

Temperature Input Type Temperature Signal Low Temperature Signal High Temperature Range Low Temperature Range High

Main & Standby %RH Control Sensors

%RH Input Type %RH Signal Low %RH Signal High %RH Range Low %RH Range High

Temperature Mapping Sensors

Temperature Input Type Temperature Signal Low Temperature Signal High Temperature Range Low Temperature Range High

Factory

Navigation

(Where to Locate)

Temperature

%RH

Mapping Input Settings

Input SettingsFactory

Temperature

%RH Mapping Sensors

%RH Input Type %RH Signal Low %RH Signal High %RH Range Low %RH Range High

Mapping Input SettingsFactory

%RH

HumiTherm Ultra User Manual

APPENDIX - B

COMPRESSOR SETTING PARAMETERS

Compressor Switching Strategies

The PPI “Temperature + Humidity” composite controllers offer different programmable strategies for compressor switching to meet different design approaches by the manufacturers of Humidity Chambers. The various strategies and the implementations are described here.

1. Compressor Off

The compressor is kept Off. This trategy is usually selected for emperature values significantly above the ambient s t

temperature.

2. Comp Onressor

The compressor is kept On regardless of the measured or set temperature value. This trategy is usually selected for s

t belowemperature values significantly the ambient temperature.

3. SP Based Strategy

In this strategy, the chamber temperature range is split in two zones by setting the parameter 'Boundary Set-point' (BSP).

Refer Figure below.

70°C

Temp. Control SP in

Compressor Status

45°C

30°C

0°C

OFF

Heat Pre-dominant Zone

Temp. Control SP in

Cool Pre-dominant Zone

50°C

Boundary Set-point

The zone at and above the boundary SP ( ) is referred as Heat Pre-dominant zone and that below the boundary SP ) ( is referred as Cool Pre-dominant zone. The controller automatically switches between the two zones depending upon the Temperature SP. If the Temperature SP is below boundary SP, Cool Pre-dominant zone is active and the compressor is kept ON. If the Temperature SP is at or above boundary SP, Heat Pre-dominant zone is active and the compressor is kept OFF. This strategy eliminates the need for the user to manually switch the compressor ON or OFF.

I Control Zones “Dual”; separate tuning can be performed in the Cool and Heat Pre-dominant zones for f the parameter is set to accurate control in each zone. The controller maintains separate sets of Proportional Band, Integral Time & Derivative Time constants for each zone that are automatically selected and used by the controller depending upon the active zone.

However, if the parameter Control Zones is set to “Single”; the controller uses a single set of Proportional Band, Integral Time & Derivative Time constants for both zones.

HumiTherm Ultra User Manual

4. PV Based Strategy

In this strategy, the compressor is switched to cool down the chamber air temperature. The controller switches the

compressor ON or OFF based on the comparison between the chamber temperature value and the SP. Temperature Refer Figure below.

Measured Temperature Temperature SP Compressor Switch-ON Level Compressor Switch-OFF Level

Temperature SP = 20.0°C Compressor Set-point = 1.0°C Compressor Hysteresis = 1.2°C

Compressor Switch-ON Level = 20.0 + 1.0 = 21.0°C Compressor Switch-OFF Level = 21.0 - 1.2 = 19.8°C

Compressor Status

21.0

20.0

19.8

OFF

°C

The compressor is turned ON if the chamber air temperature value is above the SP by an amount set by the Temperature parameter 'Compressor Set-point'. That is;

Compressor Switch - ON Level = (Temperature SP) + (Compressor Set-point)

Once the air temperature falls below Compressor Switch-ON Level by an amount set by the parameter 'Compressor Hysteresis', the compressor is turned OFF. That is;

Compressor Switch - OFF Level = (Compressor Switch-ON Level) – (Compressor Hysteresis)

The hysteresis inserts a dead band between the Compressor Switch-ON Level and Compressor Switch-OFF Level to avoid frequent switching of the compressor.

Compressor Time Delay

Once the compressor is switched off, a time delay is desired before it is turned ON again. The time delay prevents the possible damage due to short cycling. When the compressor switches off, it spins backward as pressure equalizes. If compressor is energized while it is still spinning backward, it continues to run backward until it trips on internal overloads. This may cause damage to the compressor.

The time delay cycle is executed every time the compressor is turned off. The compressor turning off may be a result of power failure or the on-off control algorithm executed by the controller. The controller in “Auto Mode” monitors the Process Value (PV) against the Set-Point (SP) and attempts to switch the compressor or depending upon whether the PV is or ON OFF above below the SP.

The time delay starts counting down from the instance the compressor is switched off. The compressor is inhibited from switching-on until the delay elapses regardless of the difference between the PV and SP. Once the time delay is elapsed, the control algorithm switches the compressor ON as and when the PV is above SP.

HumiTherm Ultra User Manual

°C

PV (Temperature) SP Compressor Switch-ON Level Compressor Switch-OFF Level

Temperature SP = 20.0°C Compressor Set-point = 1.0°C Compressor Hysteresis = 1.2°C

Compressor Switch-ON Level = 20.0 + 1.0 = 21.0°C Compressor Switch-OFF Level = 21.0 - 1.2 = 19.8°C

Compressor Status

21.0

20.0

19.8

OFF

Case 2 Case 3Case 1

The figure above illustrates 3 cases. Case (1) illustrates power-up delay. In case (2); the time elapses before PV rises above the SP. The compressor is thus switched ON as soon as the PV rises above the SP. In case (3); the PV rises above the SP while the time delay is still in progress. The compressor is switched ON as soon as the delay time elapses.

The following table list various parameters related to Compressor Switching Mode / Operation & their respective locations.

Parameter Name

Navigation

(Where to Locate)

Mode Boundary SP Time Delay Hysteresis

Factory

Compressor

Zone Select

HumiTherm Ultra User Manual

APPENDIX - C

STANDBY SENSORS

If the Controller is supplied with option, two additional analog inputs are provided for interfacing an additional Standby Sensors set of temperature & %RH sensors as standby. That is, there are two sets of Sensors; Main & Standby.

Sensor / Transmitter Fail Detection

In case of RTD Pt100 sensor the controller can directly detect Sensor failure through Sensor Open, Over-range or Underrange condition.

For DC linear inputs (mA or Volts), the controller can not detect the transmitter open or short condition. Therefore, the controller provides two programmable Setpoint Limits, one each for Temperature & %RH. If the measured process value falls below the respective setpoint limit, the condition is treated as transmitter failure or mal-functioning.

Note the Setpoint Limit for temperature is applicable even if input sensor used for temperature is RTD Pt100.

Main Set Failure

The controller, by default, uses the Main set for measurement, control & alarm purpose. Should any one or both Main Sensors / Transmitters fail, the controller automatically switches to the Standby set and stores in its non-volatile memory the Main Set Failure Main Set Failure condition. The controller continues to work with Standby Set until the condition is cleared from its memory through Repair Acknowledge button (explained later).

Standby Set Failure

The controller uses the Standby Set only if Main Set Failure condition is stored in its memory. The Main Set Failure condition is set upon Main Sensor failure detection by controller or manual change over by user from Main Set to Standby Set (explained later). Should any one or both Standby Sensors / Transmitters fail, the controller switches off all the control outputs and stores in its non-volatile memory the condition. That is, now both Main & Standby Failure conditions are stored in Standby Set Failure memory. As long as this condition prevails, the controller behaves like an indicator by keeping all its outputs off. Replace / repair sensors / transmitters and then use Repair Acknowledge button to bring controller to its normal operation mode.

Manual Switch-over to Standby Set

If the controller is working with the Main Set sensors, the user can switch to Standby Set by using touch push button provided for this purpose. This feature facilitates the user to use Standby Set should he observe misbehavior in measurement readings (like continuous fluctuations or intermittent spikes) through Main Set sensors. The manual change-over is treated same as Main Set Failure condition and is thus stored in memory.

Repair Acknowledge

Once the Main Set and / or Standby Set Failure condition is stored in memory, the only way to clear the same is through Repair Acknowledge touch button. This feature avoids continuous toggling between Main & Standby Sets should both fail.

Note that Repair Acknowledge button clears both Main & Standby Set Failure conditions from memory.

HumiTherm Ultra User Manual

The following table list various parameters related to Standby Sensors & their respective locations.

Parameter Name

Sensor Fail Detection Limit

Temperature Low %RH Low

Switch to Standby Sensor

Input Sensor Repair Acknowledge

Navigation

(Where to Locate)

Factory Standby

Supervisory Standby Switchings

Supervisory

Maintenance

Sensor Inputs

HumiTherm Ultra User Manual

APPENDIX - D

STANDBY CONTROL GADGETS

If the Controller is supplied with Standby Control Gadgets option, 5 additional digital outputs are provided for interfacing an additional set of Control Gadgets as standby. That is, there are two sets of Control Gadgets; Main & Standby.

The additional 5 outputs (besides 3 standard outputs, viz., Main Compressor, Main Heater & Main Humidifier) are; Standby Compressor, Standby Heater, Standby Humidifier, Main Set Select & Standby Set Select. The Main Set Select & the Standby Set Select outputs are used to drive two external gadgets (usually electromechanical relays) that switch power to SSRs that drive Main & Standby gadgets respectively. Refer generic electrical connection diagram below.

Line Neutral

+12 V Coil

Door Lock

Stby Set Select

Main Set Select

Compressor

Standby

Digital Outputs

Humidifier

Compressor

Main

Humidifier

Heater

Alarm

Contactor

SSR

Relay

+12 V Coil

4342414039383736353433323130292827262524

Control Gadget Fail Detection

The term control gadget failure applies to the complete set (Main or Standby) rather than an individual gadget. The failure may arise due to reasons like heater-break, compressor tripping / failure, SSR output short circuiting, etc. The failure of any gadget is treated as a set failure and the entire set is switched to the working set.

HumiTherm Ultra User Manual

The controller uses Measured Temperature & Low Water Level detection for detecting the control gadget failure.

Temperature Based Detection

For temperature based detection, the controller uses High Deviation Alarm & a Programmable Fail Detect Time (Minutes). If the measured temperature value crosses the High Deviation Limit & remains there for the set programmed Fail Detect time then the condition is treated as control gadget failure.

Water Level Based Detection

For water level based detection, the system must implement a float switch and a thermostat. Refer Figure below.

Water Tank Boiler

Water In

Float

Feed Pipe

Thermostat

Steam Out

Heater

The float switch detects water level in the water tank whereas the thermostat detects water level in the boiler. If the thermostat detects a low water level in the boiler while the float switch indicates that there is sufficient water in the water tank, the condition is treated as control gadget failure. This situation arises when there is water choking in the feed pipe and thus the steam generating system needs maintenance.

Time Based Cyclic Switching

When both, Main & Standby, sets are in working condition, the controller periodically switches between the Main & Standby sets. The periodic time is user settable in Hours.

Note that the working set the elapsed time stored in the memory upon power fail. esumption, the both, and are Upon power r controller switches the set that was in operation at the time of power failure and ex cutes the balance time.e

Main Set Failure

Upon detecting the Main set failure, the controller automatically switches to the Standby set provided the Standby set is in working condition. The controller stores in its non-volatile memory the Main Set Failure condition. The controller continues to work with Standby Set until the Main Set Failure condition is cleared from its memory through Repair Acknowledge button (explained later).

If the Main Set failure is detected while the Standby set is already failed, the controller switches off all outputs and acts as an indicator.

Standby Set Failure

Upon detecting the Standby set failure, the controller automatically switches to the Main set provided the Main set is in working condition. The controller stores in its non-volatile memory the Standby Set Failure condition. The controller continues to work with Main Set until the Standby Set Failure condition is cleared from its memory through Repair Acknowledge button (explained later).

If the Standby Set failure is detected while the Main set is already failed, the controller switches off all outputs and acts as an indicator.

HumiTherm Ultra User Manual

Main & Standby Sets Failure

As long as this condition prevails, the controller behaves like an indicator by keeping all its outputs off. Replace / repair the faulty control gadget(s) and then use Repair Acknowledge button to bring controller to its normal operation mode.

Manual Switch-over

If both, Main & Standby, sets are the user can switch from Main to Standby Set or vice-a-versa by using touch push button provided for this purpose.

Repair Acknowledge

Note that Repair Acknowledge button clears both Main & Standby Set Failure conditions from memory.

Inhibit Timer

The controller provides a programmable timer (in hours) for setting a time interval during which the controller ignores the Control Gadget Fail Detection. This timer is activated upon the following conditions.

1. After recovery from Door Open Alarm

2. Switching over from Auxiliary Power Source (Battery / Inverter) to Mains Power Source

3. System Power-up

4. After automatic / manual changeover from Main control set to Standby control set or vice-a-versa

5. After Repair Acknowledgment

6. After completion of Auto Tuning

The following table list various parameters related to Standby Sensors & their respective locations.

Parameter Name

Navigation

(Where to Locate)

Switch Main / Standby Output

Supervisory Standby Switchings

Control Gadgets Repair Acknowledge

Supervisory

Maintenance

Water Level Settings Float

Detection Enable / Disable Low Level Logic (Open / Close)

Thermostat

Detection Enable / Disable

Factory

Water Level

Low Level Logic (Open / Close)

Common Boiler (Yes / No)

Standby Control Gadgets

Fail Detect Time (Min) Cyclic Time (Hrs.)

Factory Standby Control Gadgets

Inhibit Time (Hrs.)

HumiTherm Ultra User Manual

APPENDIX - E

DOOR LOCK

If the Controller is supplied with Door Lock option, an additional digital output is provided for operating an electro-mechanical (Solenoid driven) locking system through an external relay / contactor. For automatic operation of the lock by the controller, the cabinet door must also be installed with Door Open detect switch that should be connected to the controller digital input labeled 'Door Open'.

Door “Lock” Operation

Upon power up if the cabinet door is detected the controller locks the door. However if the door is detected upon closed, open power up, the controller waits until the door is detected before applying the lock. closed

Similarly, when the cabinet door is closed after opening (through appropriate password entry by authorized person) the controller immediately applies the lock.

Door “Unlock” Operation

The HMI provides independent password entry for up to 7 authorized persons. Each person is identified by a unique ID (1 to 7) and a corresponding 8 character alpha-numeric password as shown below.

Password

ABCDEFGH

12345678

WXYZ9876

If less than 7 persons need to be authorized then the password field for the unused ID must be left blank. The figure above shows only three persons authorized to open door.

The unique ID on the HMI side is mapped with a corresponding entry describing person's name / position on the PC software (ProLog).

For unlocking the cabinet door the authorized person must enter his password on the HMI screen. Upon correct password entry the door lock is opened and an Event Record is generated by the HMI containing the authorized person's ID. The Event Record thus generated is used by the PC software to describe the door open action along with the name / position of the responsible person in Audit Trail Report.

HumiTherm Ultra User Manual

APPENDIX - F

DIGITAL INPUTS & OUTPUTS

DIGITAL INPUTS

The microPLC Control Unit incorporates interfaces for potential-free digital inputs for various functions described below.

Power Fail This Digital Input is used if provision is made for running the controller on an auxiliary power sources like battery or inverter and

a Switch is mounted for detecting main power source failure. This input detects whether the controller is being powered from Main or Auxiliary power source.

Door Open This Digital Input is used to warn if the ch mber door is left open for more than a user programmed time period by activating the a

Alarm. Also a record is generated each time the door is opened or closed.

Water Level This Digital Input can be used to detect Low Water Level in the Steam generating boiler by mounting a Float / Water Level

Switch. pon det cting Low Water Level, the boiler supply is cut-off and Alarm is U e activated for safety.

Thermostat This Digital Input can be connected to a thermostat to detect Low Water Level to change over from Main Control Gadget Set to

Standby Control Gadget Set and vice-a-versa. The Thermostat used is set to 110 °C and is immersed in boiler water. So long as the water level is normal, the thermostat remains immersed and the temperature is below 100 °C. Under Low Water Level condition, the thermostat gets exposed to air and the temperature eventually rises above 110 °C and the thermostat trips.

Alarm Acknowledge This Digital Input can be used to mute the larm utput elay.A O R

DIGITAL OUTPUTS

The microPLC Control Unit provides several digital outputs for Alarm & Process Control. The outputs are voltage levels rated 12 VDC @ 40 mA each.

Heater This Digital Output switches in accordance with the output power computed by PID loop controlling the Temperature. The

output drives the heating element through external Relay / SSR.

Humidifier This Digital Output switches in accordance with the output power computed by PID loop controlling the %RH. The output

drives the boiler heater through external Relay / SSR.

Compressor This Digital Output switches in accordance with the On-Off Strategy & Time-Delay set for the compressor operation for cooling

/ de-humidification. The output drives the power to compressor through external Relay / SSR.

HumiTherm Ultra User Manual

Main Set Select Standby Set Select

These Digital Output are fitted and functional only if controller is supplied with Standby Output feature. The digital outputs control external electrical switches (like contactors) that, in turn, control the power to the relay / SSR sets that drive control gadgets (Heater, Humidifier & Compressor).

Door Lock This Digital Output can be used to switch an electro-mechanical (magnetic) lock for cabinet door opening. The door usually

remains locked and is opened only upon correct password entry by the authorized person.

Alarm This Digital output can be used to activate an audio / visual device under process alarm condition.

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Process Precision Instruments

101, Diamond Industrial Estate, Navghar, Vasai Road (E),

Dist. Palghar - 401 210.Maharashtra, India

0250 - 2391722/33/37/42 07498799226, 09321985369

support@ppiindia.net sales@ppiindia.net,

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May 2017

PPI HumiTherm Ultra User Manual

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