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Features	Operating Displays	Setup and Programming	Process and Temp. Inputs

Operation	Nova Software	Connections	Model Number Guide

Dimensions	Specifications	Ordering Information	Documentation

RAMP & SOAK PROCESS & TEMPERATURE CONTROLLER

Thermocouple, RTD, & Process Inputs
High Accuracy Auto-Tuning PID
Two Ramp & Soak Programs, 15 segments each
Universal Power Supply 100-240 VAC
Up to 3 Relays & 2 Analog Outputs
Digital Input Program Operation
RS-485 Serial Communications Option
Modbus® RTU/ASCII Communications
Free Operating & Data Logging Software
IP55 & IP65 Fronts
1/16, 3/16, 1/8, 1/4 DIN Sizes
3 Year Warranty

Programmable Ramp and Soak Process and Temperature Controller PD550

FEATURES

The PD550 is a 1/16 DIN Nova Programmable Temperature Controller with auto-tuning PID control capabilities. Two programs store 15 segments each for precision set point control. At the completion of a program, the controller can hold the set point, stop the outputs, or loop to one of the programs, enabling one 30-segment program to be used. Its universal input accepts 23 input varieties, including thermocouple, RTD, and voltage inputs and can be easily configured for a 4-20 mA input. The relays may be programmed as alarms with 20 different high, low, and deviation alarm types that can include failsafe operation. Digital input options add the ability of external contacts to operate the controller and digital output options are available. RS-485 serial communication options include protocols for Master/Slave set point control, Modbus ASCII and RTU, as well as PC software.

DISPLAYS & PROGRAM OPERATION

Programmable Controllers have dual four-digit LEDs and Run set point programs controlled from the main display.

Program Operation

Programs are controlled through the front panel buttons without the need to enter the setup menus to use simple commands.

Main Operation Display

PV window displays process variable

SP window displays current set point orif no program is running

Press the P1 button to run program 1

Press the P2 button to run program 2

Hold the RST button to stop a program

LEDs to indicate the current program, relay status, auto tuning, and program hold

Press SET/ENT button to switch to the next display window

Programmable Ramp and Soak Process and Temperature Controller PD550 Output Display

% Output Display

SP window displays the operating level of the control output as % of full scale.

Programmable Ramp and Soak Process and Temperature Controller PD550 Segment Step

Segment Step

Turn on to immediately move to the next program segment.

Programmable Ramp and Soak Process and Temperature Controller PD550 Run Status

Run Status

Displays the remaining running time for the active program segment.

Programmable Ramp and Soak Process and Temperature Controller PD550 Program Hold

Program Hold

Turn on to put the program on hold and to maintain the current set point.

EASY SETUP & PROGRAMMING

All programming of a Nova Programmable Ramp & Soak Controller is done through the front panel. No switches or jumpers are required.

Front Panel Buttons

Press the SET/ENT button to confirm an entered value. Hold the button for 3 seconds to enter or exit the setup menus or to access the next parameter when in a group.
Press the Up button to increase numerical values or scroll through parameter options and group menus.
Press the Down button to decrease numerical values or scroll through parameter options and group menus.
Press the LEFT button to move to the next digit during numerical value programming.
Hold the P1 button for one second to run program 1.
Hold the P2 button for one second to run program 2.
Hold the RST button for one second to stop a program.

*Note that on some models one button may have several functions, such as Up/P1.

Menus and Groups

Parameters are split into two menus, a program menu and a setup menu. The program menu contains all the parameters needed to construct two 15-segment set point programs. The setup menu contains the groups and parameters to configure the inputs, outputs, alarms, and all other settings for controller operation.

Programmable Ramp and Soak Process and Temperature Controller PD550 Menus and Groups

Program Menu

The program menu is arranged in three sections. Group 0 is for general program characteristics, such as time units and set point wait zones. Group 1 and 2 are used to build programs 1 and 2.

PV Display	SP	Group Definition
		General Program Characteristics
		Program Pattern 1 Build Parameters
		Program Pattern 2 Build Parameters

Button	PV Display	Group Definition
		Auto-Tuning Group
		P.I.D. Group
SET/ENT		Password
		Control Group
		Inner Signal Group
		Digital Output Group*
		Input Group
		Output Group
		Alarm Group
		Retransmission Group
		Communications Group*

*This group menu appears only on models with the appropriate options.
For a complete list of setup parameters, their functions, and setting options, refer to the PD550 Series Instruction Manual.

Menu Password

A user defined lockout password must be entered to access certain group menus. Enter the password at the prompt when navigating the group menus by pressing the SET/ENT button. The default password is 0.

PROCESS & TEMPERATURE INPUTS

Nova Controllers use a single universal input that accepts process and temperature inputs.

Thermocouple: J, K, T, E, R, B, S, L, N, U, W, Platinel II

RTD: Pt100 (0.00385), JPt100 (0.00392)

Process:

-10 to 20 mV, 0 to 100 mV
0.4 to 2 V, 1 to 5 V, 0 to 10 V
4 to 20 mA input with a resistor shunt

VERSATILE OPERATION

Powerful standard and optional features such as universal inputs, up to three relays and two analog outputs, two digital inputs, and serial communications make the controller applicable for most process or temperature control applications.

Programmable Relays

All PD550 Series controllers have a standard 3 A Form C (SPDT) relay. Up to two additional 1 A Form A (SPST) relays may be added. All relays can be programmed for numerous control or alarm functions.

Time-Proportional PID Control
PV or SP Zone Alarms
Program Segment or End Alarms
High, Low, and Deviation Alarms
Fail-Safe and Standby Alarms
Alarm Delays and Deadbands

Analog Output Configurations

Up to two analog outputs are available on all PD550 Series controllers. Each analog output can be programmed independently, and numerous output types are selectable.

4-20 mA PID Control
4-20 mA Retransmitting
Time-Proportional PID Voltage Pulse
Transmitter Loop Power Supply

Auto-Tuning PID

A high accuracy auto-tuning function using Fuzzy Logic calculates the PID values for your system with the push of a button, eliminating the need for complex PID calculations and time consuming setup. After several on/off cycles, the PID values will be set automatically.

Gain Adjustment

Adjustments to system control characteristics can be done after auto-tuning with the programmable Gain function. Increasing the Gain will increase accuracy and reduce overshoot. Lowering the Gain will let the system reach the set point faster.

Programmable Ramp and Soak Process and Temperature Controller PD550 Gain Adjustment

PV Reactions to SP Change Based on Gain

Ramp and Soak Programming

All PD550 Series controllers can store up to two programs of 15 ramp or soa segments each. These programs have a variety of features and are easy to build.

2 Programs of 15 Segments Each
Specific Program Segment Alarms
Stop, Hold, or Link to Another Program at Program End
Repeat Segment Chains
SP Wait Zone and Time for System Accuracy

Input Bias Adjustment

Up to five bias points can be used to provide precise offset adjustments at specific input values. The controller will use the offset to create a smooth input value curve leading up to the bias points.

Digital Input Program Operation

Two digital inputs can be added as an optional feature. Digital inputs are activated by closing contacts or low logic levels. The configuration of the two inputs can be used to control or run programs.

DI Selection	Input 1	Input 2	Function
1	off	-	HOLD OFF
	on	-	HOLD ON
	-	off	STEP OFF
	-	on	STEP ON
2
	off	off	RESET
	on	-	PROG RUN
	-	off	PROGRAM 1
	-	on	PROGRAM 2

Normally open switches (external excitation not required) or open collector transistor

Inner Signal Zones

Two inner signal zones can be configured to activate when the PV or SP values are within or outside user defined high and low value ranges. Relays and digital outputs can be configured to activate with these inner signal zones.

Digital Outputs
Up to four digital outputs are available as options. These outputs can be configured to activate based on alarms, PV or SP inner signal zones, or set point program behavior (ramp up or down, soak, specific segments, program run or end).

Serial Communications & Adapters

PD550 Series controllers with the serial communications option can be used for data acquisition, Sync master set point control, or Modbus communication (RTU and ASCII). Nova controllers transmit via RS-485. The PDA7485 RS-232 to RS-485 and PDA8485 USB to RS-485converters are available for use with the Nova Multi-Monitoring software or other PC applications.

PDA8485

PDA7485

Sync Master Set Point Control

PD550 Series controllers with the serial communications option can use Sync set point control. By connecting controllers together using the RS-485 serial communication capability, one controller can control the set point of an entire string.

Use one PD550 Series Ramp & Soak Controller to control the set points of PD540 Series controllers.
All PD540 Series slave controllers will copy set point changes throughout the program.

NOVA PC SOFTWARE

Any Nova Controller with the serial communications option can be configured to interface with the Nova Multi-Monitoring PC software.

Easy to Set Up and Use
Connect up to 30 Nova Controllers
View PV, SP, and Alarm Status Simultaneously
Build and Run Ramp and Soak Programs
Log, View, and Save Data in Spreadsheet Files
Free Download from www.predig.com

Specifications

System Requirements: Windows® 95\98\ME\2000\XP
Communications: An RS-232 to RS-485 or USB to RS-485 converter may be used for communication with a PC and Nova Multi-Monitoring Software.
Number of Units: Up to 30 Nova Controllers
Baud Rate: 9,600 to 19,200 bps
Data Logging: Graph and save data as .hdr format. Each controller saves graphs independently. Data exportable in spreadsheet format.
Logging Interval: 1 second to 24 hours

Simultaneous Monitoring

Simultaneously monitor up to 30 Nova Controllers and view the PV, SP, and alarm status for all connected controllers. The main view screen also displays the basic model numbers of all connected units. Any series of Nova Controllers with the serial communications option may be monitored with this software.

Simultaneously View Up to 30 Nova Controllers

Remotely Operate Programs

Run the two set point programs though a detailed operation screen available for every connected controller. Allows for remote program run, stop, hold, skip, and auto-tuning features.

Monitor and Control Ramp and Soak Programs

Data Acquisition

PV and SP data can be logged independently for each unit. This data can be graphed using the Data Viewer for quick and clear analysis. Logged data can be exported into spreadsheet format.

View Logged Data Graphs and Export Data

Program Editing

Set point programs can be quickly and easily built through the Program Editor. These programs can be saved as independent files, downloaded to a controller, and uploaded from a programmed PD550 Series controller.

Programmable Ramp and Soak Process and Temperature Controller PD550 Program Editing

Build and Load Ramp & Soak Programs

CONNECTIONS

PD550

PD554

PD556

PD558

MODEL NUMBER GUIDE

The following guide describes the possible PD550 Series Nova Programmable Ramp & Soak Process & Temperature Controller model numbers. Refer to the price list for the complete list of models and accessories.

DIMENSIONS AND PANEL CUTOUTS

PD550

1/16 DIN (48 x 48)

PD554

3/16(72 x 72)

PD556

1/8 DIN(V) (48 x 96)

PD558

1/4 DIN (96 x 96)

SPECIFICATIONS

Except where noted all specifications apply to operation at +25°C.

General

Display: Dual 4 digits, red LED, -1999 to 9999

DIN SIZE	PV Display Inch(mm)	SP Display Inch (mm)	Weight oz (g)
1/16	0.45 (11.3)	0.37 (9.5)	7.0 (198)
3/16	0.55 (14.0)	0.47 (12.0)	12.4 (352)
1/8 (V)	0.54 (13.6)	0.41 (10.5)	11.8 (333)
1/4	0.81 (20.5)	0.43 (11.0)	14.9 (421)

Front Panel: Panel gasket provided. 1/16 & 1/8 DIN: IP65, 3/16 & 1/4 DIN: IP55
Programming Methods: Four front panel buttons and Modbus
Ramp & Soak Programs: 2 with 15 segments each
Noise Filter: Programmable 1 to 120 seconds or off
Display Update Rate: 4/second
Password: Restricts modification of programmed settings.
Non-Volatile Memory: Settings stored for a minimum of 10 years
Power: 100-240 VAC, 50/60 Hz, 10 W
Required Fuse: UL Recognized, 1 A, 250 V, slow-blow
Isolation: 2300 V input/output-to-power line; 4 kV relay output-to-input/output/power line.
Operating Temperature: 10 to 50°C
Storage Temperature: -40 to 85°C
Relative Humidity: 20 to 90% non-condensing
Enclosure: 1/16, 3/16, 1/8, & 1/4 DIN available; impact-resistant plastic; color: black
UL File Number: E244207; Process Control Equipment
Approvals: UL & C-UL Recognized, CE Compliant
Warranty: 3 years parts & labor
Extended Warranty: 1 or 2 years, refer to Price List for details.

Process Inputs

Inputs: Field selectable: 0.4 to 2.0 V, 1 to 5 V, 0 to 10 V, -10 to 20 mV, 0 to 100 mV. 4-20 mA input requires 100 Ω resistor connected across input terminals (order P/N: PDX-RES1).
Accuracy: ±0.1% FS ±1 count or 9999
Calibration: All inputs are calibrated at the factory
Scale Range: User programmable over entire range
Transmitter Supply: 14 to 18 VDC @ 20 mA; available at terminals OUT2 or OUT3, instead of retransmitting analog output; selection is made through the front panel

Relays

Ratings: 1 Form C (SPDT) standard; rated 3 A @ 30 VDC or 3 A @ 250 VAC resistive load. 1 or 2 Form A (SPST) optional; rated 1 A @ 30 VDC or 1 A @ 250 VAC resistive load.
Relay Operation: Time proportional PID control, forward or reverse (fail-safe) alarms, inner signal PV or SP zones, program segment time signals, or program run or end alerts
Cycle Time: 1 to 300 seconds; time proportional PID control only.
High/Low Alarm: User may program any alarm for absolute high or low trigger values.
Deviation Alarm: User may program any relay for high, low, or high/low range set point deviation alarm.
Alarm Deadband: 0-100% FS, user selectable
Alarm Delay: 0 to 99 minutes and 59 seconds
Reverse Operation (Fail-Safe): Programmable, independent for each alarm. Relay coils are energized in non-alarm condition. In case of power failure, relays will go to alarm state.
Forward Operation: Relay coils are energized in alarm condition. In case of power failure, relays will go to non-alarm state.
Inner Signal Zones (IS): Relay activates with inner signal 1 or 2 states, based on the value of the PV, SP, or target >SP of the program segment. Two programmable trigger value ranges.
Time Signal (TS): Relay activates during program segments with time signals.
Program Run (RUN): Relay activates during program operation.
Program End Alert (PEND): Relay activates for 15 seconds following reset at program completion.
Auto Alarm Initialization: Normal and standby operation independent for each alarm. Normal alarms will reflect the state of the input to the controller at all times. Standby alarms will not trigger if the change to alarm state is a result of power up cycle, set point change, or alarm configuration change.

Temperature Inputs
Inputs: Factory calibrated, field selectable: J, K, T, E, B, R, S, L, U, N, W, and Platinel II thermocouples and 100 Ω platinum RTD (0.00385 or 0.00392 curve)
Cold Junction Reference:Automatic or off
Offset Adjustment: Four programmable input bias zones
Sensor Break: Up or down scale, user selectable; display reads S.OPN; alarm relays will follow the up or down scale selection.

Type		Range (°C)	Range (°F)	Accuracy
	K1	-200 to 1370	-300 to 2500	>0ºC: ±0.1% FS ±1 count <0ºC: ±0.2% FS ±1 count
	K2	-199.9 to 999.9	0 to 2300
	J	-199.9 to 999.9	-300 to 2300
	T	-199.9 to 400.0	-300 to 750
	E	-199.9 to 999.9	-300 to 1800
	B	0 to 1800	32 to 3300	>400ºC: ±0.15% FS ±1 count <400ºC: ±5% FS ±1 count
	R	0 to 1700	32 to 3100	±0.15% FS ±1 count
	S	0 to 1700	32 to 3100	±0.15% FS ±1 count
	L	-199.9 to 900.0	-300 to 1600	>0ºC: ±0.1% FS ±1 count <0ºC: ±0.2% FS ±1 count
	U	-199.9 to 400.0	-300 to 750	>0ºC: ±0.1% FS ±1 count <0ºC: ±0.2% FS ±1 count
	N	-200 to 1300	-300 to 2400	>0ºC: ±0.1% FS ±1count <0ºC: ±0.25% FS ±1 count
	W	0 to 2300	32 to 4200	±0.2% FS ±1 count
	Platinel II	0 to 1390	32 to 2500	±0.1% FS ±1 count

	PtA	-199.9 to 850.0	-300 to 1560	±0.1% FS ±1 count
	PtB	-199.9 to 500.0	-199.9 to 999.9	±0.1% FS ±1 count
	Ptc	-19.99 to 99.99	-4.0 to 212.0	±0.2% FS ±1 count
	JPtA	-199.9 to 500.0	-199.9 to 999.9	±0.1% FS ±1 count
	JPtB	-150.0 to 150.0	-199.9 to 300	±0.1% FS ±1 count

*Performance within recommended operating conditions (10 to 50 ºC, 20 to 90% RH)

Digital Outputs
Configuration: 2 or 4 open collector transistor
Operation Modes: Alarms, inner signal zones (IS), program segment time signals (TS), SP status (ramp up/down or soak), program running (RUN) or end alerts (PEND). See Relays above for operation mode details.
Transistor Rating: 24 VDC @ 50 mA

Analog Outputs

Scaling Range: Retransmitting 4-20 mA outputs can be scaled for any range.
Accuracy: ±0.1% FS
Availability:1/16 & 3/16 DIN: 1 standard, 1 optional, 1/8 & 1/4 DIN: 2 standard
Output Operation: 4-20 mA PID control, time proportional voltage pulse PID control, or 4-20 mA retransmitting
Ratings: Continuous 4-20 mA PID or retransmitting: 600Ω max. Time Proportional PID: 15 VDC pulse high, less than 0.1 VDC pulse low; 600 Ω minimum, current limited at 30 mA
Cycle Time: 1 to 300 seconds; time proportional PID control only
Power: Internally powered 4-20 mA output
Isolation: 500 V input-to-output
Output Loop Resistance: 600 Ω max

Digital InputsConfiguration: Two contacts, two operating modes
Contacts: Normally open switches (external excitation not required) or open collector transistor
Open Circuit Voltage: Approximately 5 VDC
Logic Levels: LO = 0 to 0.8 VDC, HI = 4.7 to 28 VDC
Operation Modes: Mode 1: Program hold and step;
Mode 2: Program run or reset.
Serial Communications

Compatibility: EIA-485
Protocol: PC, Modbus (ASCII, RTU), Sync (Master SP Control)
Address: 1 to 99 (Max 31 units connected)
Baud Rate: 600 to 19,200 bps
Data: 7 or 8 bit, automatic when using Modbus protocol
Transmit Time Delay: 0 to 100 ms
Stop Bit: 1 or 2
Parity: None, even, or odd

ORDERING INFORMATION Products
Model	Description	Price
PD550-6RA-00	Ramp & Soak Controllers; 1 Relay, 1 Analog Output; 1/16 DIN	$249.00
PD550-6RA-02	Ramp & Soak Controllers; 1 Relay, 1 Analog, 2 Digital Outputs; 1/16 DIN	$309.00
PD550-6RA-03	Ramp & Soak Controllers; 1 Relay, 1 Analog, 4 Digital Outputs; 1/16 DIN	$359.00
PD550-6RA-11	Ramp & Soak Controllers; 2 Relays, 1 Analog, 2 Digital Inputs; 1/16 DIN	$279.00
PD550-6RA-14	Ramp & Soak Controllers; 2 Relays, 1 Analog, RS/485; 1/16 DIN	$309.00
PD550-6RA-31	Ramp & Soak Controllers; 1 Relay, 2 Anlog, 2 Digital Inputs; 1/16 DIN	$279.00
PD550-6RA-34	Ramp & Soak Controllers; 1 Relay, 2 Analog, RS-485; 1/16 DIN	$309.00
PD554-6RA-00	Ramp & Soak Controllers; 1 Relay, 1 Analog Output; 3/16 DIN	$279.00
PD554-6RA-02	Ramp & Soak Controllers; 1 Relay, 1 Analog, 2 Digital Outputs; 3/16 DIN	$339.00
PD554-6RA-03	Ramp & Soak Controllers; 1 Relay, 1 Analog, 4 Digital Outputs; 3/16 DIN	$389.00
PD554-6RA-04	Ramp & Soak Controllers; 1 Relay, 1 Analog, RS-485; 3/16 DIN	$339.00
PD554-6RA-51	Ramp & Soak Controllers; 3 Relays, 2 Analog, 2 Digital Inputs; 3/16 DIN	$319.00
PD554-6RA-52	Ramp && Soak Controllers; 3 Relays, 2 analog, 2 Digital Outputs; 3/16 DIN	$369.00
PD554-6RA-53	Ramp & Soak Controllers; 3 Relays, 2 Analog, 4 Digital Outputs; 3/16 DIN	$429.00
PD554-6RA-54	Ramp & Soak Controllers; 3 Relays, 2 Analog, RS-485; 3/16 DIN	$369.00
PD556-6RB-00	Ramp & Soak Controllers; 1 Relay, 2 Analog Outputs; 1/8 (V) DIN	$299.00
PD556-6RB-21	Ramp & Soak Controllers; 3 Relays, 2 Analog, 2 Digital Inputs; 1/8 (V) DIN	$349.00
PD556-6RB-24	Ramp & Soak Controllers; 3 Relays, 2 Analog, RS-485; 1/8 (V) DIN	$359.00
PD556-6RB-25	Ramp &Soak Controllers; 3 Relays, 2 Analog, 2 Digital Inputs, 4 Digital Outputs; 1/8 (V) DIN	$419.00
PD556-6RB-26	Ramp & Soak Controllers; 3 Relays, 2 Analog, RS-485, 4 Digital Outputs; 1/8 (V) DIN	$469.00
PD558-6RB-00	Ramp & Soak Controllers; 1 Relay, 2 Analog Outputs; 1/4 DIN	$319.00
PD558-6RB-21	Ramp & Soak Controllers; 3 Relays, 2 Analog, 2 Digital Inputs; 1/4 DIN	$369.00
PD558-6RB-24	Ramp & Soak Controllers; 3 Relays, 2 Analog, RS-485; 1/4 DIN	$389.00
PD558-6RB-25	Ramp & Soak Controllers; 3 Relays, 2 Analog, 2 Digital Inputs, 4 Digital Outputs; 1/4 DIN	$449.00
PD558-6RB-26	Ramp & Soak Controllers; 3 Relays, 2 Analog, RS-485, 4 Digital Outputs; 1/4 DIN	$499.00

Accessories
Model	Description	Price
PDA7485-I	RS-232 to RS-422/485 Isolated Converter	$169.00
PDA7485-N	RS-232 to RS-422/485 Non-Isolated Converter	$139.00
PDA8485-I	USB to RS-422/485 Isolated Converter	$189.00
PDA8485-N	USB to RS-422/485 Non-Isolated Converter	$159.00
PDX-RES1	100 Ω Precision Resistor for NOVA 4-20 mA Input	$5.00

Documentation
The documentation can be downloaded from these links:

PD550: Instruction Manual

PD550: Data Sheet

Nova FAQs

Nova Multi-Monitoring Software

NOVA Virtual Meter

Setup and Calibration Services Order Form

Nova Software Instruction Manual

App Note: 4-20 mA Output Control Using the Set Point

Nova Series Overview Video

Nova Series Programming Video

Nova Series Monitoring Software

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