PPI Zenex User Manual

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User Manual

Universal Self-Tune PID Temperature Controller with Programmable Timer

CONTENTS

User Manual

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1. FRONT PANEL LAYOUT 1

2. BASIC OPERATION 3

3. SET UP MODE : ACCESS & OPERATION 7

4. I / O CONFIGURATION PARAMETERS 9

5. OP2 FUNCTION PARAMETERS 11

6. OP3 FUNCTION PARAMETERS 14

7. PID CONTROL PARAMETERS 16

8. SOAK TIMER PARAMETERS 18

9. SUPERVISORY PARAMETERS 21

10. HARDWARE ASSEMBLY AND CONFIGURATIONS 24

11. MECHANICAL INSTALLATION 30

12. ELECTRICAL CONNECTIONS 32

For Size 96X96

1. FRONT PANEL LAYOUT 36

2. 38HARDWARE ASSEMBLY AND CONFIGURATIONS

3. ELECTRICAL CONNECTIONS 41

For Size 48X48

FRONT PANEL LAYOUT

Figure 1.1

PPI

OP1 OP2

OP3

Upper Readout

Lower Readout

Output-3 Indicator

ENTER Key

UP Key

DOWN Key

PAGE Key

Output-1 Indicator

Output-2 Indicator

Soak Status Indicator

Balance Soak Time Indicator

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The front panel contains digital readouts, LED indicators and keys.

READOUTS

The Upper Readout is a 4 digit, 7-segment bright red LED display and usually displays the PV (Process Value). In Program Mode, the Upper Readout displays parameter values/options.

The Lower Readout is a 4 digit, 7-segment bright green LED display and usually displays SP (Control Setpoint) Value. In Program Mode, the Lower Readout displays parameter names (prompts).

INDICATORS

The Table 1.1 lists each front panel LED and the associated status.

Table 1.1

Status

Indicator

Glows while the Lower Readout shows the Balance Soak Time in Main display mode.

• Flashes while the Soak Timer is counting down.

• Glows steadily while the Soak Timer is outside the Timer Start Band or Hold Band (that is, HOLD state).

• Indicates Output-1 ON/OFF status if the Control Output is Relay or SSR drive.

• Remains OFF if the Control Output is DC Linear.

OP1

• Indicates Output-2 status if OP2 function is Auxiliary / Blower Control.

• Flashes Alarm-1 status if OP2 function is Alarm.

OP2

OP3

• Indicates Output-3 status if OP3 function is Auxiliary Control.

• Flashes Alarm-2 status if OP3 function is Alarm.

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Section 1

KEYS

The Table 1.2 lists the four front panel keys and the associated function.

Table 1.2

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Symbol

Key

Function

Press to enter or exit set-up mode.

DOWN

ENTER

Press to store the set parameter value and to scroll to the next parameter on the PAGE.

Press to increase the parameter value. Pressing once increases the value by one count; holding pressed speeds up the change.

Press to decrease the parameter value. Pressing once decreases the value by one count; keeping pressed speeds up the change.

PAGE

BASIC OPERATIONS

POWER-UP

Upon power-up all displays and indicators are lit on for approximately 3 seconds. This is followed by the indication of the controller model name on the Upper Readout and the firmware version on the Lower Readout, for

approximately 1 second.

MAIN DISPLAY MODE

After the Power-up display sequence, the Upper Readout starts showing the measured PV (Process Value) and the Lower Readout displays the SP (Control Setpoint). This is the MAIN Display Mode that shall be used most often.

Adjusting SP (Control Setpoint)

The SP value can be directly adjusted on the Lower Readout while the controller is in the MAIN Display Mode.

If permitted at Supervisory Level, step through the following sequence for adjusting the SP value :

1. While the Lower Readout shows SP value, press and release UP or DOWN key once. The Lower Readout starts flashing.

2. Use UP/DOWN keys to adjust the SP value.

3. Press and release ENTER key. The Lower Readout stops flashing and the new set value is registered and stored.

Tune / Optimize Indication

The controller self detects the events such as new installation, significant change in SP, etc. for auto tuning itself to the process under control. Also, the controller can be issued ‘Optimize’ command by the user for optimization of the PID constant values.

While the controller is Tuning/Optimizing, the Lower Readout flashes the message (Busy). The user is advised not to disturb the process or alter any parameter values while the “Busy” message is being flashed. The “Busy” message automatically disappears upon completion of Tuning/Optimization.

Timer (Soak) Mode Indication

While Soak Timer is in progress, the front panel indicator ‘S’ flashes if the timer is counting down or glows steadily if the timer is in wait / hold state.

The Lower Readout can be toggled to display either Balance Soak Time or Control Setpoint (SP), using ENTER key. While the Lower Readout shows balance soak time the indicator ‘T’ glows.

The Balance Soak time is in either ‘Minutes : Seconds’ or ‘Hours : Minutes’ or ‘Hours’, depending upon the time units selected for the Soak Timer. If the selected time units are ‘Hours’, then (a) If the balance time is greater than 100 Hours, the time is shown in ‘Hours’. (b) If the balance time is less than 100 Hours, the time is shown in ‘Hours : Minutes’.

PV Error Indications

The process value is said to be in error if it exceeds the minimum / maximum range specified for the selected Input sensor type or if the sensor is disconnected (Open or Broken).

The PV Error type is indicated (flashing) on the Upper Readout. For different errors and the causes refer Table 2.1 below.

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Section 2

Table 2.1

Message PV Error Type

Open Sensor / RTD broken

Under-range PV below Min. Range

Over-range PV above Max. Range

CONTROL/ALARM STATUS UNDER PV ERROR CONDITIONS

a) The tuning, if in progress, is aborted.

b) The Soak Timer, if in progress, enters in Pause (halt) state.

c) All the control outputs are switched off.

d) For Alarm activation, the under-range condition is treated as minimum PV, whereas the over-range and open conditions

are treated as maximum PV. Thus, Process High, positive Deviation Band and Window Band alarms activate under Over-

range/Open error. Similarly, Process Low, negative Deviation Band and Window Band alarms activate under Underrange error.

OPERATOR PAGE AND PARAMETERS

The controller provides a separate page that contains parameters that require frequent settings by the operator. The page is called Operator Page and the parameters are called Operator Parameters. The availability of operator parameters is controlled at supervisory level and these parameters are not affected by the master lock status.

Accessing Operator Page & Adjusting Parameters

Step through the following sequence to open the operator page and to adjust the operator parameter values.

1. Press and release PAGE key. The Lower Readout shows (PAGE) and Upper Readout shows (0).

2. Press ENTER key. The Lower Readout shows prompt for the first available operator parameter and the Upper Readout shows value for the parameter.

3. Use UP/DOWN keys to adjust the value and then press ENTER key to store the set value and scroll to next parameter.

The controller automatically reverts to MAIN Display Mode upon scrolling through the last operator parameter. Alternatively, use PAGE key to return to MAIN Display Mode.

The Operator Parameters are described in Table 4. Note that the parameters presented on operator page depend upon the functions selected / enabled.

The operator parameter list mainly includes :

a) Soak Start / Abort Command, if Soak Time feature is enabled.

b) The Control Setpoint (SP).

c) Alarm-1 Setpoint or Blower Setpoint or Auxiliary Control Setpoint for OP2 depending upon the function selected.

d) Alarm-2 Setpoint or Auxiliary Control Setpoint for OP3 depending upon the function selected.

e) Lock for Setpoint Editing on Lower Readout.

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Yes

Parameter Description

Settings

TIMER START COMMAND

Set to Yes to start Soak Timer. Not available if timer already running.

TIMER ABORT COMMAND

Set to Yes to abort a running timer.

The set time value for the soak timer in the selected time units.

TIME DURATION

00.05 to 60.00 M:S or

00.05 to 99.55 H:M or

1 to 999 Hours

Parameter Description

Settings

OP2 Function : Alarm-1

ALARM-1 SETPOINT

Process High / Process Low Alarm-1 Setpoint.

Min. to Max.

Range for the

Input Type

ALARM-1 DEVIATION BAND

Positive (+) or Negative (-) Alarm-1deviation band.

-1999 to 9999 or

-199.9 to 999.9

ALARM-1 WINDOW BAND

Symmetrical Alarm-1 window band.

3 to 999 or

0.3 to 99.9

OP2 Function : Auxiliary Control

Parameter Description

Settings

Positive (+) or Negative (-) offset to Control Setpoint (SP) for defining Auxiliary Setpoint.

AUXILIARY CONTROL SETPOINT

(Min. Range - SP)

(Max. Range - SP)

for selected Input

Yes

Table 2.2

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Parameter Description

Settings

OP2 Function : Blower / Compressor Control

Positive (+) offset to Control Setpoint (SP) for defining Blower / Compressor Setpoint.

BLOWER / COMPRESSOR SETPOINT

0 to 250 or

0.0 to 25.0

Parameter Description

Settings

OP3 Function : Alarm-2

Process High / Process Low Alarm-2 Setpoint.

ALARM-2 SETPOINT

Min. to Max.

Range for the

Input Type

Positive (+) or Negative (-) Alarm-2 deviation band.

ALARM-2 DEVIATION BAND

-1999 to 9999 or

-199.9 to 999.9

Symmetrical Alarm-2 window band.

ALARM-2 WINDOW BAND

3 to 999 or

0.3 to 99.9

OP3 Function : Auxiliary Control

Parameter Description

Settings

Positive (+) or Negative (-) offset to Control Setpoint (SP) for defining Auxiliary Setpoint.

AUXILIARY CONTROL SETPOINT

(Min. Range - SP)

(Max. Range - SP)

for selected Input

Control Setpoint (SP) Locking

Parameter Description

Settings

SETPOINT LOCKING

Set to Yes to lock the SP editing on the Lower Readout.

Yes

The various parameters are arranged in different groups, called PAGES, depending upon the functions they represent. Each group is assigned a unique numeric value, called PAGE NUMBER, for its access.

The parameters are always presented in a fixed format: The Lower Readout displays the parameter prompt (Identification Name) and the Upper Readout displays the set value. The parameters appear in the same sequence as listed in their respective sections.

SET-UP MODE

The Set-up Mode allows the user to view and modify the parameter values. Follow the steps below for setting the parameter values:

1. Press and release PAGE key. The Lower Readout shows PAGE and the Upper Readout shows page number 0. Refer Figure 3.1.

2. Use UP / DOWN keys to set the desired PAGE NUMBER.

3. Press and release ENTER key. The Lower Readout shows the prompt for the first parameter listed in the set PAGE and the Upper Readout shows its current value. (If the entered PAGE NUMBER is invalid (contains no parameter list or any associated function), the controller reverts to the MAIN Display Mode.

4. Press and release the ENTER key until the prompt for the required parameter appears on the Lower Readout. (The last parameter in the list rolls back to the first parameter).

5. Use UP / DOWN keys to adjust the parameter value. (The display flashes if UP key is pressed after reaching the maximum value or DOWN key is pressed after reaching the minimum value).

6. Press and release the ENTER key. The new value gets stored in the controller’s non-volatile memory and the next parameter in the list is displayed.

The Figure 3.1 illustrates the example of altering the value for the parameter ‘Input Type’.

SET-UP MODE : ACCESS AND OPERATION

Figure 3.1

Notes

1. Each page contains a fixed list of parameters that are presented in a pre-determined sequence. Note however that availability of a few parameters, called Conditional Parameters, depend upon the settings for some other parameters. For example, the parameter ‘Control Hysteresis’ for Output-1 is available only if, the set value for the parameter ‘Control Action’ is ‘On-Off’.

2. To exit the set-up mode and return to the MAIN Display Mode, press and release PAGE key.

3. If no key is pressed for approximately 30 seconds, the set-up mode times out and reverts to the MAIN Display Mode.

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Main Display

Mode

Default Page

Page Number

Press PAGE

key to enter

Set-up Mode

Use UP/DOWN

key to set the

Page Number

Press ENTER

key to open

the Page

Use UP/DOWN

keys to change

the value

Press ENTER

key to store the value &

move to next parameter

First Parameter

on Page-10

New Parameter

value

Next Parameter

on Page-10

Section 3

MASTER LOCKING

The controller facilitates locking all the PAGES (except Operator PAGE) by applying Master Lock Code. Under Locking, the parameters are available for view only and cannot be adjusted. The Master Lock, however does not lock the operator parameters. This feature allows protecting the rather less frequently used parameters against any inadvertent changes while making the frequently used operator parameters still available for any editing.

For enabling / disabling the Lock, step through the following sequence:

Locking

1. Press and release PAGE key while the controller is in the MAIN Display Mode. The Lower Readout shows PAGE and the Upper Readout shows 0.

2. Use UP / DOWN keys to set the Page Number to 123 on the Upper Readout.

3. Press and release ENTER key. The controller returns to the MAIN Display Mode with the Lock enabled.

The Figure 3.2 below illustrates the Locking procedure.

UnLocking

Repeat the Locking procedure twice for unlocking.

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Figure 3.2

MAIN Display

Mode

Default Page Locking Code

MAIN Display

Mode

Press PAGE

key to enter

Set-up Mode

Use UP/DOWN

key to set the

‘Locking Code’

Press ENTER key

to Lock & Return to

Main Mode

Table 4.1

Parameter Description

Settings

Default Value

INPUT TYPE

Refer Table 4.2

(Default : Type K)

Refer Table 4.2 for various available ‘Input Types’ along with their respective Ranges and Resolutions.

TEMPERATURE DISPLAY UNITS

Select as ‘°C’ (Centigrade) or ‘°F’ (Fahrenheit).

°C

°F

(Default : °C)

TEMPERATURE RANGE

This parameter value must be set in accordance with the Maximum Temperature Range for which the equipment / machine is designed. Set this parameter value appropriately as the same is used by the controller to determine whether or not to Self-Tune / Optimize the controller upon detecting the “Tune at Setpoint Change” condition.

CONTROL OUTPUT TYPE

Refer Table 4.3 for the available options.

Refer Table 4.3

(Default : Relay)

CONTROL MODE

On-Off The control algorithm tends to maintain the PV at SP by either

switching the output (say, Heater) fully OFF or fully ON. The On and Off switching is differentiated by the user settable ‘Hysteresis Band’.

PID The control algorithm uses a 2nd order equation to compute the

‘% Output Power’ required to maintain the PV at SP. The constants P, I, D are automatically set by the controller.

On-Off

PID

(Default : PID)

CONTROL LOGIC

Direct Cooling Control (Output Power increases with increase in PV). Reverse Heating Control (Output Power decreases with increase in PV).

Direct

Reverse

(Default : Reverse)

HYSTERESIS

(For ON-OFF Control only) Sets a differential (dead) band between the ON and OFF states.

Keep it large enough to avoid frequent switching of the load without losing the desired control accuracy.

1 to 999°C or

0.1 to 99.9°C

(Default : 2 or 0.2)

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I / O CONFIGURATION PARAMETERS

Section 4

(Default : 1375)

Min. to Max. specified

for the selected Input Type

(Refer Table 4.2)

Parameter Description

Settings

Default Value

SETPOINT LOW LIMIT

This parameter sets the minimum limit on the Control Setpoint value.

(Default : -200)

This parameter sets the maximum limit on the Control Setpoint value.

SETPOINT HIGH LIMIT

Setpoint Low to

Max. Range for the

selected Input Type

(Default : 1375)

Table 4.2

Table 4.3

Option

What it means Remarks

Applicable for OP1 as Relay / SSR

0 to 20 mA current

4 to 20 mA current

0 to 5 Volts

0 to 10 Volts

Applicable for OP1 as DC Linear Voltage

Applicable for OP1 as DC Linear Current

Relay

SSR (Solid State Relay)

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Min. Range to

Setpoint High for the

selected Input Type

Option

What it means

Range

(Min. to Max.)

Type J Thermocouple

Type K Thermocouple

Type T Thermocouple

0 to +960°C / +32 to +1760°F

-200 to +1375°C / -328 to +2508°F

-200 to +385°C / -328 to +725°F

Type R Thermocouple

Type S Thermocouple

Type B Thermocouple

Type N Thermocouple

0 to +1770°C / +32 to +3218°F

0 to +1765°C / +32 to +3209°F

0 to +1825°C / +32 to +3092°F

0 to +1300°C / +32 to +2372°F

Fixed

1°C / 1°F

3-wire, RTD Pt100

-199 to +600°C / -328 to +1112°F

-199.9 to 600.0°C / -199.9 to 999.9°F

0.1°C / 0.1°F

3-wire, RTD Pt100

Resolution

(Fixed or settable)

None

Alarm

Control

Blower

(Default : None)

Parameter Description

Settings

Default Value

Table 5.1

OUTPUT-2 FUNCTION SELECTION

None OP2 module not installed or function not used.

Alarm

OP2 relay activates as Alarm status. Auxiliary Control OP2 relay activates as Auxiliary control status. Blower OP2 relay activates as Blower / Compressor control status.

OP2 Function : Alarm-1

Parameter Description

Settings

Default Value

TYPE

Process Low

The alarm activates for PV less than or equal to Alarm Setpoint.

Process High

The alarm activates for PV greater than or equal to Alarm Setpoint. Deviation Band The alarm activates if the PV deviation from SP is greater than the

set positive or negative ‘Deviation Band’ value. Window Band The alarm activates if the PV deviation from SP is greater than the

set ‘Window Band’ value in either direction.

End Of Soak

The OP2 Relay / SSR is switched ON for the time duration set for the parameter ‘Alarm Timer’.

SETPOINT

Available for ‘Process High’ or ‘Process Low’ Alarms. Sets the Upper (Process High) or Lower (Process Low) Alarm Limit.

Min. to Max. Range for the selected Input type

(Default : 0)

DEVIATION BAND

Available for ‘Deviation Band’ Alarm. Sets a deviation band above (Positive value) or below (Negative value) the SP for alarm activation.

-1999 to 9999 or

-199.9 to 999.9 (Default : 0)

WINDOW BAND

Available for ‘Window Band’ Alarm. Sets a symmetrical band above and below the SP for alarm activation.

3 to 999 or 0.3 to 99.9

(Default : 3)

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OP2 FUNCTION PARAMETERS

Section 5

Process Low

Process High

Deviation Band

Window Band

End of Soak

(Default : Process Low)

Yes

(Default : Yes)

Normal

Reverse

(Default : Normal)

Parameter Description

Settings

Default Value

LOGIC

Normal The Alarm output (Relay/SSR) remains ON under alarm condition; OFF otherwise. Useful for Audio / Visual Alarm. Reverse The Alarm output (Relay / SSR) remains OFF under alarm condition; ON otherwise. Useful for Tripping the system under control.

INHIBIT

Alarm is not suppressed for start-up condition.

Yes

The Alarm activation is inhibited (suppressed) until the PV is found within alarm limits from the time the controller is switched ON.

ALARM TIMER

Available for End of Soak Alarm. Sets time duration in seconds for which the alarm shall activate upon end of soak timer.

5 to 250 Seconds

(Default : 10)

OP2 Function : Auxiliary Control

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Parameter Description

Settings

Default Value

OFFSET VALUE

Offset value for the Auxiliary Control Setpoint. Can be set as positive value or negative value.

Auxiliary Control Setpoint = Control Setpoint (SP) + Offset Value

(Min. Range - SP) to

(Max. Range - SP) specified

for the selected Input Type

(Default : 0)

HYSTERESIS

Sets a differential (dead) band between the ON and OFF control states.

1 to 999 or

0.1 to 99.9

(Default : 2 or 0.2)

CONTROL LOGIC

Normal

The Output remains ON for PV below Setpoint and OFF otherwise.

Reverse

The Output remains ON for PV above Setpoint and OFF otherwise.

Normal

Reverse

(Default : Normal)

OP2 Function : Blower / Compressor Control

Parameter Description

Settings

Default Value

OFFSET VALUE

Sets a positive (+) offset to the SP to define the ‘Blower / Compressor Setpoint’.

Blower / Compressor Setpoint = Control Setpoint (SP) + Offset Value

0 to 250 or

0.0 to 25.0

(Default : 0)

HYSTERESIS

Differential (dead) band between the blower ON and OFF states.

1 to 250 or

0.1 to 25.0

(Default : 2 or 0.2)

TIME DELAY

This parameter is mainly used for Compressor Load. The set time delay is elapsed each time before the compressor is switched ON. Set the value to 0 if no Time Delay is required.

00.00 to 10.00 Min. Sec (in steps of 5 Seconds)

(Default : 00.00)

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None

Alarm

Control

(Default : None)

Parameter Description

Settings

Default Value

OUTPUT-3 FUNCTION SELECTION

None OP2 module not installed or function not used.

Alarm

OP2 relay activates as Alarm status. Auxiliary Control OP2 relay activates as Auxiliary control status.

OP3 Function : Alarm-2

Table 6.1

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OP3 FUNCTION PARAMETERS

Parameter Description

Settings

Default Value

TYPE

Process Low

The alarm activates for PV less than or equal to Alarm Setpoint.

Process High

The alarm activates for PV greater than or equal to Alarm Setpoint. Deviation Band The alarm activates if the PV deviation from SP is greater than the

set positive or negative ‘Deviation Band’ value. Window Band The alarm activates if the PV deviation from SP is greater than the

set ‘Window Band’ value in either direction.

End Of Soak

The OP2 Relay / SSR is switched ON for the time duration set for the parameter ‘Alarm Timer’.

SETPOINT

Available for ‘Process High’ or ‘Process Low’ Alarms. Sets the Upper (Process High) or Lower (Process Low) Alarm Limit.

Min. to Max. Range for the selected Input type

(Default : 0)

DEVIATION BAND

Available for ‘Deviation Band’ Alarm. Sets a deviation band above (Positive value) or below (Negative value) the SP for alarm activation.

-1999 to 9999 or

-199.9 to 999.9 (Default : 0)

WINDOW BAND

Available for ‘Window Band’ Alarm. Sets a symmetrical band above and below the SP for alarm activation.

3 to 999 or 0.3 to 99.9

(Default : 3)

Section 6

(Default : Process Low)

Process High

Deviation Band

Window Band

End of Soak

Process Low

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OP3 Function : Auxiliary Control

Parameter Description

Settings

Default Value

(Min. Range - SP) to

(Max. Range - SP) specified

for the selected Input Type

(Default : 0)

1 to 999 or

0.1 to 99.9

(Default : 2 or 0.2)

Normal

Reverse

(Default : Normal)

OFFSET VALUE

Offset value for the Auxiliary Control Setpoint. Can be set as positive value or negative value.

Auxiliary Control Setpoint = Control Setpoint (SP) + Offset Value

HYSTERESIS

Sets a differential (dead) band between the ON and OFF control states.

CONTROL LOGIC

Normal The Output remains ON for PV below Setpoint and OFF otherwise.

Reverse The Output remains ON for PV above Setpoint and OFF otherwise.

Parameter Description

Settings

Default Value

LOGIC

5 to 250 Seconds

(Default : 10)

INHIBIT

Alarm is not suppressed for start-up condition.

Yes

The Alarm activation is inhibited (suppressed) until the PV is found within alarm limits from the time the controller is switched ON.

ALARM TIMER

Available for End of Soak Alarm. Sets time duration in seconds for which the alarm shall activate upon end of soak timer.

Normal

Reverse

(Default : Normal)

Yes

(Default : Yes)

Table 7.1

Parameter Description

Settings

Default Value

Not Applicable

(Default : Not Applicable)

0.5 to 120.0 Seconds (in steps of 0.5 secs.)

(Default : 0.5)

(Default : 10.0)

0.1 to 999.9

% OUTPUT POWER

This is a view only parameter that facilitates the indication of ‘% Output Power’ computed by the controller PID algorithm. The computed value lies between Min. power (0.0%) and Max. power (100.0%).

CYCLE TIME

(For ‘PID’ Control) For time-proportionating PID control, the output power is implemented by adjusting the ratio of ON : OFF to a fixed time interval, called ‘Cycle Time’. The larger the power the larger the ON time and vice-a-versa.

Larger Cycle time ensures longer Relay/SSR life but may result in poor control accuracy and vice-a-versa.The recommended Cycle

Time values are; 20 sec. for Relay and 1 sec. for SSR.

PROPORTIONAL BAND

(For ‘PID’ Control) The Proportional band is defined in terms of process value deviation from the setpoint (also known as process error). Within the band the output power is varied from maximum (100%) at maximum deviation to minimum (0%) at minimum deviation. The process value thus tends to stabilize at a point within the band where the power input equal losses. Larger Band results in better stability but larger deviation.

The Proportional Band value is automatically calculated by controller’s Self-Tune feature and seldom requires any manual adjustment.

INTEGRAL TIME

(For ‘PID’ Control) The application of proportional band alone results in process value stability within the band but away from the setpoint. This is called steady state Offset Error. The integral action is incorporated for automatic removal of offset error with minimum ocillations.

The Integral Time value is automatically calculated by controller’s Self-Tune feature and seldom requires any manual adjustments.

0 to 1000 Seconds

(Default : 100)

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PID CONTROL PARAMETERS

Section 7

Parameter Description

Settings

Default Value

DERIVATIVE TIME

(For ‘PID’ Control) It is desired that the controller should respond to any dynamic changes in the process conditions (like variations in load, power supply fluctuations, etc.) fast enough so as retain the process value near the setpoint. The derivative time determines how strong the output power will change in response to the rate of change of measured PV.

The Derivative Time value is automatically calculated by controller’s Self-Tune feature and seldom requires any manual adjustments.

0 to 250 Seconds

(Default : 25)

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(Refer end of this section for detailed Soak Timer Operation)

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SOAK TIMER PARAMETERS

Table 8.1

Min:Sec

Hours:Min

Hours

(Default : Min: Sec)

Parameter Description

Settings

Default Value

TIMER ENABLE

Yes

(Default : No)

Yes

Soak Timer function and Start / Abort commands are enabled.

Soak Timer function and Start / Abort commands are disabled.

TIME UNITS

Select the time units depending on the minimum and/or maximum time value required.

TIME DURATION

The preset time value in selected units for the Soak Timer.

00.05 to 60:00 Min:Sec

00.05 to 99:55 Hrs:Min 1 to 999 Hours

(Default : 00.10 Min:Sec)

TIMER-START BAND

After issuance of start command, the timer starts counting down once the PV enters the process band around SP defined by this parameter value.

0 to 9999 or

0.0 to 999.9

(Default : 5 or 0.5)

HOLDBACK STRATEGY

None

Down

Both

(Default : None)

None

PV based timer pause is not required.

Up Timer is paused if PV is outside holdband above SP. Down Timer is paused if PV is outside holdband below SP. Both

Timer is paused if PV is outside holdband both above and below SP.

HOLD BAND

Sets the temperature limit(s) with respect to the SP for the timer to pause. The timer holds on counting should the PV cross the limit(s).

1 to 9999 or

0.1 to 999.9

(Default : 5 or 0.5)

SWITCH-OFF CONTROL OUTPUT AT TIMER END

Yes

The control output (OP1) is forced off upon completion of timer.

The control output state is not forced.

Yes

(Default : No)

Section 8

Parameter Description

Settings

Default Value

POWER-FAIL RECOVERY METHOD

Continue

The Soak Timer resumes operation for the balance time.

Start

The timer re-runs the complete soak time.

Abort

The timer operation is suspended until a new start command is issued.

(Default : Continue)

Continue

(Re)Start

Abort

SOAK TIMER OPERATION

Figure 8.1

Time

Set Time

Timer count down starts

PV enters start band,

Start Band

Basic Operation

The Soak Timer is essentially a preset timer that can be configured to run as :

(a) A Free Running Timer by setting timer ‘Start Band’ to 0. That is, the timer starts counting down immediately upon issuance

of Start Command by the user and continues until set time is elapsed.

(b) A Setpoint Dependent Timer. That is, after issuance of Start Command, the count down starts only after the PV reaches

within timer ‘Start Band’. The timer start band is a symmetrical band centered around the SP. For example, for a start band of 2°C and SP value of 100°C, the count down begins once the PV reaches a value within 98°C (SP - Start Band) to102°C (SP + Start Band). Note that, once the PV enters ‘Start Band’, the timer continues to run regardless of whether the PV remains within or outside the ‘Start Band’.

Hold Band Operation

The timer is also provided with a ‘Hold Band’ that can be enabled to make sure that the timer counts down only while the PV is within the ‘Hold Band’. That is, the timer pauses (holds counting down) whenever the PV is outside the ‘Hold Band’. The ‘Hold Band’ is set with respect to the SP and can be set above or below or above and below the SP. For example, a 5 °C Hold Band

below the SP (say,100°C) will force the timer in pause state whenever the PV is equal or less than 95°C (SP - Hold Band).

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Power-fail Recovery Modes

The timer facilitates 3 different power-fail recovery modes, viz., Continue, Re-start and Abort. In Continue mode, the timer resumes to execute the balance soak time once the PV is detected within Hold Band. In Re-start mode, the timer executes the complete set time all over again. In Abort mode, the timer stops execution until a start command is issued.

End-of-Soak Events

The output Relay/SSR modules, OP2 and/or OP3, can be configured as End-of-Soak Alarm with a settable alarm duration. That is, upon completion of Soak Time execution, the Relay energizes (say, to activate a buzzer) for the set alarm duration.

Additionally, the controller provides ‘Output-Off’ strategy that can be enabled to force the control output OP1 off upon End-ofSoak. The output becomes active again after issuance of Start Command for the execution of a new Soak Time Cycle.

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SUPERVISORY PARAMETERS

Table 9.1

Parameter Description

Settings

Default Value

TUNE / OPTIMIZE COMMAND

(For PID Control Mode only) Set to ‘Yes’ for initiating Tune / Optimize operation.

TUNE / OPTIMIZE ABORT COMMAND

(For PID Control Mode only) Set to ‘Yes’ for terminating Tune / Optimize operation in progress.

OVERSHOOT INHIBIT

(For PID Control Mode only) Set this parameter to ‘Enable’ if the process exhibits unacceptable

overshoot upon start-up or a step change in SP. If enabled, the controller controls the rate of change of PV to minimize overshoot.

OVERSHOOT INHIBIT FACTOR

This parameter adjusts the effectiveness of the Overshoot Inhibit feature. Increase the value if the overshoot is curbed but the PV takes longer to reach the SP. Decreases the value if the overshoot persists.

1.0 to 2.0

1.2)(Default :

SELF-TUNE ON SETPOINT CHANGE

Enable Re-tune the controller if there is a substantial (large) change in the SP value. The P, I, D values are optimized.

Disable

Ignore any change in SP value and continue with the existing P, I, D values.

OFFSET FOR PV

This parameter adds positive or negative offset to the measured PV for removal of thermal gradient or known sensor error.

-1999 to 9999 or

-199.9 to 999.9 (Default : 0)

DIGITAL FILTER FOR PV

0.5 to 25.0 Seconds in steps of 0.5 Seconds

(Default : 1.0)

This value determines the averaging rate of measured PV and thus helps removing undesired rapid changes in the measured PV. The higher the filter value the better the averaging but the slower the response to actual changes.

Yes

(Default : No)

Yes

(Default : No)

Enable

Disable

(Default : Disable)

Enable

Disable

(Default : Disable)

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4800

9600

1200

2400

(Default : 9600)

Parameter Description

Settings

Default Value

PERMISSION FOR OP2/OP3 SETPOINT EDITING ON OPERATOR PAGE

This parameter allows the user to enable (permit) or disable (restrict) the adjustment of the Setpoint for OP2 / OP3 functions.

SOAK ABORT COMMAND ON OPERATOR PAGE

This parameter allows the user to enable (permit) or disable (restrict) the issuance of ‘Abort’ command from operator page to Abort (Stop) the running Soak Timer.

SOAK TIME ADJUSTMENT ON OPERATOR PAGE

This parameter allows the user to enable (permit) or disable (restrict) the adjustment of the ‘Soak Time Duration’ on Operator Page.

UTILITY OPTION

None

No optional utility module is fitted / functional.

Serial Communication

The optional utility module is RS485/RS232 serial communication port.

Soak Start

The optional utility module is Digital Input (potential-free contact closure) for Soak Start Command. An open to close contact will initiate the Soak Timer.

(The following parameters are available and applicable for utility option serial communication)

Serial Comm.

None

Soak Start

(Default : None)

SLAVE ID

This parameter assigns a unique identification number that the Master Device can use to address the instrument for any communication data transactions. The settable values are from 1 to 127.

1 to 127

(Default : 1)

BAUD RATE

This parameter defines the communication speed expressed in “Bits per second”. The Baud Rate must be set to match the Baud Rate set for the Master Device.

Enable

Disable

(Default : Enable)

Enable

Disable

(Default : Enable)

Enable

Disable

(Default : Enable)

Parameter Description

Settings

Default Value

COMMUNICATION WRITE ENABLE

Yes The Read/Write parameters can be accessed for both reading and writing. No The Read/Write parameters can only be accessed for reading. That is, the parameter values cannot be altered through serial communication.

Yes

(Default : Yes)

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HARDWARE ASSEMBLY AND CONFIGURATIONS

Figure 10.1

Front Label

Pullout Grip

Enclosure

Connection Diagram

Rear Terminals

Ventilations

Ratchets

Panel Mounting Clamp

Panel Sealing

Gasket

Bezel

PPI

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OP1

OP2

OP3

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N/O

RE LAY

SSR / DC Lin ear

OU TP UT 1

Pt100

T/C

mV, V, mA

UTP

C Li

N/O

N/C

SERIAL

COMMS.

SSR / DC Linear

RELA

N/O

N/C

PPI

L N

SU PP LY

GND

AUXILIARY SP

SELECTION

The Figure 10.1 below shows the controller outer-case viewed with front label upright.

ELECTRONIC ASSEMBLY

The basic electronics assembly (without any plug-in modules), comprises of 3 Printed Circuit Boards (PCB). When viewed from the front; the CPU PCB is to the right, Power-supply PCB is to the left and the Display PCB is behind the bezel.

The electronic assembly can be removed from the plastic enclosure and placed back as described and illustrated in Figure

10.2

Section 10

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Power Supply

PCB

CPU PCB

Display PCB

‘UP’ inscribed on topside

Placing Back

Removal

Pullout Grip

PPI

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OP1

OP2

OP3

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N/O

RE LAY

SSR / D C Linear

OU TP UT 1

Pt100

T/C

mV, V, mA

N/O

N/C

SERIAL

COMMS.

SSR / DC Linear

RELA

N/O

N/C

PPI

L N

SU PPLY

GND

AUXILIARY SP

SELECTION

Figure 10.2

Removing Assembly from Enclosure

With the controller upright, hold the Bezel with the fingers on the pullout grips provided on the left and right sides of the bezel. Pull the bezel outward. The assembly comes out with the bezel.

Placing Assembly Back into Enclosure

With the controller upright (the UP inscribed on the Enclosure is on the topside), insert the bezel gently with the boards on either side sliding into the guides provided inside of the Enclosure. Ensure that the bezel fits in tight on the Enclosure-front to secure the panel-sealing gasket.

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MOUNTING PLUG-IN MODULES

The controller supports up to 3 plug-in modules, viz. Output-2 Module (Relay / SSR or DC Linear), Output-3 Module (Relay / SSR or DC Linear) and Option Module (RS485 Serial Port or Digital Input for Auxiliary Setpoint selection). These modules are

either pre-fitted while the controller is shipped from the factory or can be fitted by the user later.

All 3 plug-in modules are provided with female socket that directly fits into the corresponding male plug provided on either Power-supply PCB or CPU PCB. The Output-2 and Option Modules fit into plugs provided on Power-supply PCB whereas the Output-3 Module fits into plug provided on the CPU PCB.

OUTPUT-2 & OUTPUT-3 : Modules and Jumper Settings

The Output-2 and Output-3 Modules come in three versions, viz., Relay / SSR, DC Linear Voltage and DC Linear Current. The

two modules are identical and, thus, can be fitted interchangeably in Output-2 or Output-3 positions.

Relay / SSR Module

This module can be configured for either Relay or SSR output through proper jumper selection. Two jumper settings A and B, as shown in Figure 10.3 and Table 10.1, are required for Relay or SSR selection.

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Figure 10.4

DC Voltage/Current Module

Figure 10.3

Relay/SSR Module

DC Linear Voltage / Current Module

The DC Linear Module is factory configured for either Current or Voltage output. The current output can be configured for 0-20 mA or 4-20 mA and similarly the voltage output can be configured for 0-5 V or 0-10 V through parameter settings.

MOUNTING / UN-MOUNTING OF MODULES

The Figures 10.5 & 10.6 illustrates how to mount the plug-in Output-2 & Output-3 module, respectively. Notice the orientation of the controller and a few identifying components shown in figures to help locate the plugs for the modules. Ensure that the socket snap-fits into the plug and the 2 projected parts on the module fit into the 2 slots provided on the Power-Supply / CPU PCB for proper electrical contacts and secured fitting.

For plugging out the module(s), follow the steps below:

1. Gently pull apart the Power-supply board and the CPU board until the projections of the module board come out of the slots.

2. Pull the module outward to unlock the socket from the plug.

Table 10.1

Relay

SSR

Output Type Jumper Setting - A Jumper Setting - B

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Figure 10.5

Mounting Output-2 Module

Figure 10.6

Mounting Output-3 Module

Output Module

Projections

Plug & Socket Connector

Slots

CPU Board

Front Label Upside-down

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Plug & Socket Connector

Projected Parts

Slots

Output Module

Power Supply Board

Front Label Upright

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The plug for the Serial Communication or Auxiliary SP Selection module is located on the Power-supply PCB. The Figure 10.7 below illustrates how to plug-in the Serial Communication/Auxiliary SP module. To plug (or unplug) the module simply insert (or remove) the socket into (or from) the plug.

Mounting Serial Communication/Auxiliary SP Selection Module

Figure 10.7

Plug & Socket Connectors

Serial Communication/ Auxiliary SP Selection Module

Power Supply Board

Front Label Upside-down

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The following precautions should be strictly observed while installing the controller:

1. The place of installation should be free of corrosive/combustible gases and electrically conductive pollution.

2. Ensure that the place of installation is not subject to rapid ambient changes that can cause condensation. Also the Ambient

Temperature and Relative Humidity surrounding the controller should not exceed the maximum specified for the proper operation of the controller.

3. The place of installation should be adequately protected against excessive electrostatic or electromagnetic interference.

4. The controller should not be subject to direct vibration or shock.

5. The controller should not be exposed to dust, salt air, direct sunlight or radiant heat.

OUTER DIMENSIONS

The Figure 11.1 shows the outer dimensions of the controller.

MECHANICAL INSTALLATION

110mm (4.33in)

10mm (0.39in)

Side View

PPI

OP1 OP2

OP3

48mm

(1.89in)

48mm

(1.89in)

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Front View

Figure 11.1

Panel Cutout

45 X 45 mm

-0, +0.5 mm

(1.77 X 1.77 in)

(-0, +0.02 in)

10mm (0.39in)

38mm (1.5in)

Figure 11.2

PANEL CUTOUT AND RECOMMENDED MINIMUM SPACING

The Figure 11.2 shows the panel cutout requirements for a single controller and also the minimum spacing recommended if several controllers are required to be mounted on a single panel.

Section 11

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PANEL MOUNTING

Follow the steps below for mounting the controller on panel:

1. Prepare a square cutout to the size shown in Figure 11.2.

2. Remove the Panel Mounting Clamp from the controller Enclosure.

3. Insert the rear of the controller housing through the panel cutout from the front of the mounting panel.

4. Hold the controller gently against the mounting panel such that it positions squarely against the panel wall, see Figure 11.3.

Apply pressure only on the bezel and not on the front label.

5. Slide the mounting clamp forward until it is firmly in contact with the rear face of the mounting panel and the tongues of the

clamp engage in the ratchets on the controller enclosure, as shown in Figure 11.3. Ensure that the springs of the clamp push firmly against the rear face of the mounting panel for secured mounting.

Figure 11.3

PPI

OP1

OP2

HBA

Panel Mounting Clamp

Mounting Panel with Square Cutout

Controller

Tongues

Springs

Ratchets

Bezel

Slide Forward

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11 12

N/O C

RE LAY

SSR / DC Linear

OUT PUT 1

Pt100

T/C

mV, V, mA

/ D

N/O

N/C

SERIAL

COMMS.

SSR / DC Linear

RELA

N/O

N/C

PPI

L N

SUP PLY

GND

AUXILIARY SP

SELECTION

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Refer connection diagram shown on the left side of the enclosure. The diagram shows the terminals viewed from the REAR

SIDE with the controller label upright.

Figure 12.1

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ELECTRICAL CONNECTIONS

Section 12

7 8

11 12

OUTPUT 1

Pt100

T/C

INP U T

SSR RE LAY

NONCC

OUTPUT 2

RS 485

AC DC

SSR

SUPPLY

RELAY

OUTPUT 1

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48X48

2 Output Version

3 Output Version

7 8

11 12

OUTPUT 1

Pt100

T/C

INP U T

OUTPUT 3

SSR REL AY

NONCC

OUTPUT 2

RS 485

AC DC

SSR

RELAY

SUPPLY

DC Linear

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48X48

DC Linear Version

DC Linear

RELAY

OUTPUT 1

T/C

Pt100

C NC

RS 485

SSR

RELAY

OUTPUT 2

SSR

RELAY

OUTPUT 3

CNC

8149

1516

106

85 ~ 265 V

AC SUPPLY

INPUT

SSR

OUTPUT 1

48X48

TEMPERATURE SENSOR INPUT

Connect Thermocouple or 3-wire RTD Pt100 sensor as shown below.

Figure 12.2 (a)

Thermocouple

Figure 12.2 (b)

RTD

OUTPUT-1 (Control Output)

The Output-1 is factory configured as either Relay / SSR Drive or DC Linear mA / V.

Note that Relay / SSR outputs are simultaneously provided on separate terminals. Refer Figure 12.3 (a).

For DC Linear mA/V, use terminals 4 & 6 as shown in Figure 12.3 (b).

Figure 12.3 (a) Figure 12.3 (b)

Relay Output

SSR Output mA/V Output

Relay Output

Potential-free Relay changeover contacts NO (Normally Open) and C (Common) rated 10A/240 VAC (resistive load).

SSR Output

Connect (+) and (-) terminals of SSR to terminals 11 & 10, respectively. Use Zero-Crossover, 3 to 30 VDC operated SSR.

mA / V Output

The Positive (+) of mA / V is available at Terminal 6 & the Negative (-) at Terminal 4.

OUTPUT- 2 (Alarm / Blower / Auxiliary Control)

OUTPUT- 3 (Alarm / Auxiliary Control)

The numbers in brackets indicates the terminal numbers for Output-3.

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Thermocouple

Connect Thermocouple Positive (+) to terminal 1 and Negative (-) to terminal 2 as shown in Figure 12.2 (a). Use correct type of extension lead wires or compensating cable. Avoid joints in the cable.

RTD Pt100, 3-wire

Connect single leaded end of RTD bulb to terminal 1 and the double leaded ends to terminal 2 and 3 (interchangeable) as shown in Figure 12.2 (b). Use low resistance copper conductor leads of the same gauge and length. Avoid joints in the cable.

SERIAL COMMUNICATION PORT

Connect terminal 15 and 14 of the controller to the positive (+) and negative (-) terminals of the master device.

Note that, PC as a master device cannot be connected (wired) directly to the instrument as PC is equipped with RS232C serial port which is not directly compatible with RS485 port on instrument side. In such cases use RS232/RS485 converter as a bridge.

Figure 12.6

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Figure 12.4 (a)

Relay Output

SSR Output

Figure 12.4 (b)

Relay Output

SSR Output

Refer Figure 12.4(a) for Output-2 & Figure 12.4(b) for Output-3 connections.

POWER SUPPLY

The controller accepts single phase, 50/60 Hz Line Voltage ranging from 85 VAC to 264 VAC. Use well-insulated copper conductor wire of the size not smaller than 0.5mm for power supply

connections. Connect Line Voltage as shown in Figure 12.5.

Figure 12.5

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FRONT PANEL LAYOUT

The front panel contains digital readouts, LED indicators and keys.

READOUTS

The Upper Readout is a 4 digit, 7-segment bright red LED display and usually displays the PV (Process Value). In Program Mode, the Upper Readout displays parameter values/options.

The Lower Readout is a 4 digit, 7-segment bright green LED display and usually displays SP (Control Setpoint) Value. In Program Mode, the Lower Readout displays parameter names (prompts).

INDICATORS

The Table 1.1 lists each front panel LED and the associated status.

Table 1.1

Status

Indicator

Glows while the Lower Readout shows the Balance Soak Time in Main display mode.

• Flashes while the Soak Timer is counting down.

• Glows steadily while the Soak Timer is outside the Timer Start Band or Hold Band (that is, HOLD state).

• Indicates Output-1 ON/OFF status if the Control Output is Relay or SSR drive.

• Remains OFF if the Control Output is DC Linear.

OP1

• Indicates Output-2 status if OP2 function is Auxiliary / Blower Control.

• Flashes Alarm-1 status if OP2 function is Alarm.

OP2

OP3

• Indicates Output-3 status if OP3 function is Auxiliary Control.

• Flashes Alarm-2 status if OP3 function is Alarm.

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Figure 1.1

PPI

OP1 OP2 OP3

Upper Readout

Lower Readout

Output-3 Indicator

ENTER Key

UP Key

DOWN Key

PAGE Key

Output-1 Indicator

Output-2 Indicator

Soak Status Indicator

Balance Soak Time Indicator

S T

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KEYS

The Table 1.2 lists the four front panel keys and the associated function.

Table 1.2

User Manual

Symbol

Key

Function

Press to enter or exit set-up mode.

DOWN

ENTER

Press to store the set parameter value and to scroll to the next parameter on the PAGE.

Press to increase the parameter value. Pressing once increases the value by one count; holding pressed speeds up the change.

Press to decrease the parameter value. Pressing once decreases the value by one count; keeping pressed speeds up the change.

PAGE

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HARDWARE ASSEMBLY AND CONFIGURATIONS

Figure 2.1

The Figure 2.1 below shows the controller outer-case viewed with front label upright.

ELECTRONIC ASSEMBLY

The basic electronics assembly (without any plug-in modules), comprises of 3 Printed Circuit Boards (PCB). The CPU PCB, Power-supply PCB and the Display PCB is behind the bezel.

The electronic assembly can be removed from the plastic enclosure and placed back as described and illustrated in Figure

2.1.

Section 2

PPI

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Pt100

T/C

mV, V

, mA

R /

C L

RE LAY

5 V

SUP PLY

OUT

SSR /

DC Linear

RELA

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NC C

RS4

Ventilations

Rear Terminals

Connection Diagram

Front Label

Enclosure Assembly

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Output-2 & 3 Jumper Settings Table 2.2

OUTPUT-2 & 3 : Jumper Settings

Besides the parameter settings, the Output-2 & 3 configuration requires jumper settings selections as shown in the Table 2.2 below. Figure 2.2 illustrates mounting of Output Modules.

1 2 3

Relay

SSR

Output Type Jumper Setting - BJumper Setting - A

1 2 3

Figure 2.2

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Mounting / Un-Mountion of Modules

The Figure 2.2 Illustrates how to mount output-2 module, respectively. Notice the orientation of the controller & a few identifying components shown in figure to help locate the plugs for the modules.

Output 2 A & B

Jumper Settings

Display

CPU Board

Keys

}

Mounting Output Modules

The plug for the Serial Communication or Auxiliary SP Selection module is located on the Power-supply PCB. The Figure 2.3 below illustrates how to plug-in the Serial Communication/Auxiliary SP module. To plug (or unplug) the module simply insert (or remove) the socket into (or from) the plug.

Mounting Serial Communication/Auxiliary SP Selection Module

Figure 2.3

CN3

CN4

Output 3

Jumper Setting

Serial Communication

Module

Power-Supply PCB

8 Pin Male Plug

8 Pin Female

Socket

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PPI

User Manual

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DC Linear

OUTPUT-3

OUTPUT-1

RS485

OUTPUT-2

OUTPUT-1INPUT

RELAY

NC C NO

SSR

RELAY

NC C NO

SSR

RELAY

NCC

SSR

85 ~ 265 V

AC SUPPLY

96 X 96

T/C

Pt100

Refer connection diagram shown on the left side of the enclosure. The diagram shows the terminals viewed from the REAR

SIDE with the controller label upright.

Figure 3.1

User Manual

ELECTRICAL CONNECTIONS

Section 3

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96X96

Pt100

T/C

INP U T

OUTPUT-1

RELAY

SSR

L N

OUTPUT-2

NC C

SSR

RELAY

85 ~ 264V RS485

AC SUPPLY

OUTPUT-1

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96X96

Pt100

T/C

INP U T

OUTPUT-3

SSR

RELAY

OUTPUT-1

DC Linear

L N

OUTPUT-2

NC C

SSR

RELAY

85 ~ 264V RS485

AC SUPPLY

2 Output Version

DC Linear Version

3 Output Version

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OUTPUT-1 (Control Output)

The Output-1 is factory configured as either Relay / SSR Drive or DC Linear mA / V.

Note that Relay / SSR outputs are simultaneously provided on separate terminals. Refer Figure 3.3 (a).

For DC Linear mA/V, use terminals 4 & 6 as shown in Figure 3.3 (b).

Figure 3.3 (a) Figure 3.3 (b)

Relay Output

SSR Output mA/V Output

Relay Output

Potential-free Relay changeover contacts NO (Normally Open) and C (Common) rated 10A/240 VAC (resistive load).

SSR Output Connect (+) and (-) terminals of SSR to terminals 11 & 10, respectively. Use Zero-Crossover, 3 to 30 VDC operated SSR.

mA / V Output

The Positive (+) of mA / V is available at Terminal 6 & the Negative (-) at Terminal 4.

OUTPUT- 2 (Alarm / Blower / Auxiliary Control) OUTPUT- 3 (Alarm / Auxiliary Control)

The numbers in brackets indicates the terminal numbers for Output-3.

User Manual

TEMPERATURE SENSOR INPUT

Connect Thermocouple or 3-wire RTD Pt100 sensor as shown below.

Figure 3.2 (a)

Thermocouple

Figure 3.2 (b)

RTD

Thermocouple

Connect Thermocouple Positive (+) to terminal 1 and Negative (-) to terminal 2 as shown in Figure 3.2 (a). Use correct type of extension lead wires or compensating cable. Avoid joints in the cable.

RTD Pt100, 3-wire

Connect single leaded end of RTD bulb to terminal 1 and the double leaded ends to terminal 2 and 3 (interchangeable) as shown in Figure 3.2 (b). Use low resistance copper conductor leads of the same gauge and length. Avoid joints in the cable.

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SERIAL COMMUNICATION PORT

Connect terminal 15 and 14 of the controller to the positive (+) and negative (-) terminals of the master device.

Figure 3.6

Figure 3.4 (a)

Relay Output

SSR Output

Figure 3.4 (b)

Relay Output

SSR Output

Refer Figure 3.4(a) for Output-2 & Figure 3.4(b) for Output-3 connections.

POWER SUPPLY

The controller accepts single phase, 50/60 Hz Line Voltage ranging from 85 VAC to 264 VAC. Use well-insulated copper conductor wire of the size not smaller than 0.5mm for power supply

connections. Connect Line Voltage as shown in Figure 3.5.

Figure 3.5

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w w w . p p i i n d i a . n e t

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,

Mar 2017

PPI Zenex User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual