PPI Omni 48 Economic Self-Tune PID Temperature Controller User Manual

PPI Omni 48 Economic Self-Tune PID Temperature Controller

PANEL MOUNTING AND ELECTRICAL CONNECTIONS

WARNING
MISHANDLING / NEGLIGENCE CAN R E S U LT I N P E R S O N A L D E AT H O R SERIOUS INJURY.

PANEL CUTOUTS

PANEL MOUNTING

Follow the steps below for mounting the controller on panel:

1. Prepare a square cutout to the size shown in Figure 1.1 depending on the model (OmniX48, OmniX72, OmniX96).
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.
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. Ensure that the clamp springs push firmly against the rear face of the mounting panel for secured mounting.

ELECTRICAL CONNECTIONS
Observe the followings while making electrical connections.

1. Run power supply cables separated from Thermocouple / RTD cables.
2. Use appropriate fuses and switches, wherever necessary, for driving the high voltage loads.
3. Do not over-tighten the terminal screws while making connections.
4. Switch-off the controller supply while making / removing any connections .

The Electrical Connection Diagram is shown on the Right Side of the controller enclosure. The diagram shows the terminals viewed from the REAR SIDE with the controller label upright. The terminal numbers are also embossed on the rear side of the controller. Refer Figure 1.2 (a) for model OmniX48, Figure 1.2 (b) for model OmniX72 and Figure 1.2 (c) for model OmniX96.

INPUT (Terminals 1, 2 and 3)
The controller accepts Thermocouples (J & K Type) and RTD Pt100. Connect Thermocouple or RTD Pt100 as described below.

Thermocouple
Connect Thermocouple Positive (+) to terminal 1 and Negative (-) to terminal 2 as shown in Figure 1.3 (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 1.3 (b). Use copper conductor leads of very low resistance for RTD connections. Ensure that all 3 leads are of the same gauge and length. Avoid joints in the cable.

OUTPUT
The Controller is supplied with both Relay contacts and SSR Drive Voltage outputs on separate terminals. Use output type in accordance with the value set for the parameter ‘Control Output Type’ on Page-12.
The Terminals for Relay and SSR output (for all 3 models) are shown in the Figures 1.4 (a) & 1.4 (b), respectively.

Relay

N/O (Normally Open), C (Common), N/C (Normally Closed) contacts are potential- free and are rated 10A/240 VAC (resistive load).

SSR Drive Voltage

Connect Terminal marked (+) to positive SSR Terminal and Terminal marked (-) to negative SSR Terminal.

POWER SUPPLY

The controller accepts single phase, 50/60 Hz Line Voltage ranging from 85 to 264 VAC. Use well-insulated copper conductor wire of the size not smaller than 0.5 mm2. Connect Line Voltage as shown in Figure 1.5.

FRONT PANEL : LAYOUT AND OPERATION

READOUTS
The Upper Readout is a 4 digit, 7-segment bright red LED display and usually displays the Measured Temperature. In Set-up 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) or % Output Power. In Set-up Mode, the Lower Readout displays prompts for the parameters.
INDICATOR
The Front panel Indicator ‘OP’ shows the ON/OFF status of the control output (Relay/SSR).
KEYS
There are four tactile keys provided on the front panel for configuring the controller and setting-up the parameter values. The Table 2.1 lists each key (identified by the front panel symbol) and the associated function.

POWER UP
Upon switching on the power to the controller, all displays and indicators are lit on for approximately 3 seconds. This is followed by the indication of the model name on the Lower Readout and on Upper Readout.

MAIN DISPLAY
After the Power-up display sequence, the Controller enters MAIN Display Mode. The Upper Readout shows the measured PV (Process Value) and the Lower Readout displays the SP (Control Setpoint). The MAIN Display Mode is the one that shall be used most often.
If the controller is configured to operate in PID Control Mode; the Lower Readout can be toggled to indicate either SP or % Output Power using the ENTER Key. The default Lower Readout upon Power-up is SP. While indicating % Power, the left most digit indicates P and remaining digits indicate power value.

ADJUSTING SP
The SP value can be directly adjusted on the Lower Readout while the controller is in the MAIN Display Mode and the Lower readout is showing SP value. Step through the following sequence to adjust the SP value:

1. Press and release UP/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 set value is registered and stored in the controller’s non-volatile memory.

TEMPERATURE ERROR INDICATION
In case the Temperature falls below the Minimum Range or rises above the Maximum Range specified for the selected ‘Input Type’ or in case the input sensor is open / broken; the Upper Readout flashes the error messages listed in Table 2.2 below. The Figure 2.3 illustrates an open sensor condition.

TUNE INDICATION (Applicable for PID Control Only)
Upon issuing ‘Self Tune Command’, the controller starts tuning itself to the process under control. While the controller is busy in Tuning itself to the process, the Lower Readout flashes the message “Tune”, as shown in figure 2.4 below. The user is advised not to disturb the process or alter any parameter values while the “Tune” message is being flashed. The “Tune” message automatically disappears upon completion of Tuning procedure and the controller reverts to MAIN Display Mode.

SET-UP MODE : ACCESS AND OPERATION

The controller requires various user settings that determine how the controller will function or operate. These settings are called Parameters.
For the convenience and ease of operation, the various parameters have been grouped separately depending upon the functions they define. Each such group is called a PAGE. Each PAGE is assigned a unique number, called PAGE NUMBER, for its access. The parameters contained in a PAGE are presented in a fixed sequence to the user for setting. The user can access a desired PAGE by entering its PAGE NUMBER and can select and set the desired parameter values.

PARAMETER PROMPTS
Each parameter has an identifying tag, called the Parameter Prompt. While setting parameter values in a PAGE, the parameter prompt is always displayed on the Lower Readout and its current value is displayed on the Upper Readout.

ACCESSING A PAGE
Each PAGE is accessible only from the MAIN Display Mode. That is, from the current PAGE, the user must return to the MAIN Display Mode before the other PAGE can be accessed.
Figure 3.1 illustrates access to the desired PAGE from MAIN Display Mode .

ADJUSTING PARAMETER VALUES
For accessing and adjusting the parameter, one must first open the PAGE containing the parameter.
Figure 3.2 illustrates how to access the desired parameter(s) and adjust the corresponding value(s). The example shows accessing the parameter ‘Control Logic’ and changing its value from ‘Reverse’ to ‘Direct’. Press PAGE key to revert to MAIN Mode.

PARAMETER LOCKING
For protecting the parameter values from unauthorized / accidental alterations, the parameter adjustments can be Locked. The Operator Page is not affected by locking.

Locking
Follow the steps below to apply Locking when the controller is unlocked.

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 3.3 illustrates the steps for Locking.

Un-Locking
For Un-Locking, repeat the sequence of steps shown in figure 3.3 twice.

SETTING DEFAULT VALUES
The controller is shipped from the factory with all the parameters set to their default values. Refer Figure 3.4 above for regaining the factory default values.

INPUT / OUTPUT CONFIGURATION PARAMETERS

Refer Table 4.1 for the parameter descriptions and settings.

CONTROL PARAMETERS

Refer Table 5.1 for the parameter descriptions and settings.

SUPERVISORY PARAMETERS

Refer Table 6.1 for the parameter descriptions and settings.

OPERATOR PARAMETER

Process Precision Instruments
101, Diamond Industrial Estate, Navghar, Vasai Road (E), Dist. Palghar – 401 210.Maharashtra, India
Sales : 8208199048 / 8208141446
Support : 07498799226 / 08767395333
sales@ppiindia.net, support@ppiindia.net

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