Precision Digital PD540 Nova Process & Temperature Controller

Last Updates: 14/08/2020

Precision Digital PD547-6RB-24


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Part Number: PD547-6RB-24  Categories: ,
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  • SKU: PD547-6RB-24 
    Product Type: Auto-Tune PID Controller 
    Input: Current (4-20 mA), Voltage (0-10 V), Thermocouple, RTD 
    Output Options: (3) Relays, (2) 4-20 mA, Heating and Cooling 
    Power: 100-240 VAC 
    Approvals: CE, C-UL Recognized 
    Display Category: LED, Dual Line 
    Display: Dual Line, 4 Digits, Red LED 
    DIN Size: 1/8 DIN (Vertical) 
    Serial Comms: RS-485 Modbus 
    Warranty: 3 years 
    Digital Inputs: None 
    Product Series: Nova 
    Product Family: PD540 
    Product category: Temperature Controllers 
    Product Application: Temperature, Process

    The Nova PD540 is a digital temperature controller with auto-tuning PID capabilities that is available in 1/16, 3/16, 1/8, and 1/4 DIN sizes. Models include standard one-directional control (i.e. heating or cooling) or bi-directional heating and cooling control. One of four user programmable set points may be selected for PID control in the form of time proportional relay on/off output, time proportional voltage pulse output, or 4-20 mA signal control. Its universal input accepts 23 input varieties, including thermocouple, RTD, and voltage inputs, and it can be easily configured for a 4-20 mA input. It is available with up to three (3) relays, two (2) 4-20 mA analog outputs, two (2) digital inputs, and an RS485 serial communication option which includes protocols for master/slave set point control, Modbus® ASCII and RTU, as well as PC software.

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

    DIN SIZEPV Display
    Inch (mm)
    SP Display
    Inch (mm)
    oz (g)
    1/160.45 (11.3)037 (9.5)7.0 (198)
    3/160.55 (14.0)0.47 (12.0)11.4 (324)
    1/8 (H)0.78 (19.8)0.45 (11.5)10.8 (306)
    1/8 (V)0.54 (13.6)0.41 (10.5)10.7 (304)
    1/40.81 (20.5)0.43 (11.0)13.7 (389)

    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
    Number of Set Points: Four programmable set points
    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(H), 1/8(V), 1/4 DIN; impact-resistant plastic; color: black
    Approvals: UL & C-UL Recognized, CE Compliant
    UL File Number: E244207; Process Control Equipment
    Warranty: 3 years parts & labor

    Temperature Inputs

    Inputs: Factory calibrated, field selectable: J, K, T, E, B, R, S, L, U, N, W, 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.

    TypeRange (°C)Range (°F)Accuracy

    Thermocouple Inputs

    K1-200 to 1370-300 to 25002500>0ºC: ± 0.1% FS ± 1count
    <0ºC: ± 0.2% FS ± 1 count
    K2-199.9 to 999.90 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
    B0 to 180032 to 3300>400ºC: ± 0.15% FS ± 1 count
    <400 ºC: ± 5% FS± 1 count
    R0 to 170032 to 3100±0.15% FS ± 1 count
    S0 to 170032 to 3100
    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
    N-200 to 1300-300 to 2400>0ºC: ± 0.1% FS ± 1 count
    <0ºC: ± 0.25% FS ± 1 count
    W0 to 230032 to 4200±0.2% FS ± 1 count
    Platinel II0 to 139032 to 2500±0.1% FS ± 1 count

    RTD Inputs

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

    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
    Decimal Point: Up to 3 decimals: 9.999, 99.99, 999.9 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 through front panel.


    Ratings: 1 Form C (SPDT) standard; rated 3 A @ 30 VDC or 3 A @ 250 VAC resistive load. 1 or2 Form A (SPST) optional; rated 1 A @ 30 VDC or 1 A @ 250 VAC resistive load.
    Relay Operation: Time proportional PID control, on/off control, forward or reverse (fail-safe) alarm, or run status
    Cycle Time: 1 to 300 seconds; time proportional PID control only
    On/Off Hysteresis: For standard models, 0-10.0% of sensor range for independent high and low hysteresis limit. For heating & cooling models, 0-10.0% of sensor range full hysteresis band.
    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.
    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.
    Run Status: Relays will energize when PID outputs are running.

    Analog Outputs

    Scaling Range: Retransmitting 4-20 mA outputs can be scaled for any display 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: 600 Ω 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 Inputs

    Configuration 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: Control output run or stop, selection of set point 1 or 2. Mode 2: Selection of set points
    1 to 4.

    Serial Communications

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

    Nova Multi-Monitoring PC Software

    Any Nova Controller with the serial communications option can be configured to interface with the Nova Multi-Monitoring PC software. Up to 30 controllers can be monitored and operated, and each can use independent data logging.

    • Easy to Set Up and Use
    • Connect up to 30 Nova Controllers
    • View PV, SP, and Alarm Status Simultaneously
    • Control Set Points
    • Log, View, and Save Data in Spreadsheet Files
    • Free Download (click here)


    System Requirements: Windows® 9598ME2000XPVista7
    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 Control Set Points

    Program each of the 4 set points through a detailed operation screen available for every connected controller. In addition, control outputs can be set to run or stop, autotuning enabled, and automatic or manual control established.

    Monitor and Control Common Parameters

    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

    PD540 & PD541 Connections


    PD542 & PD543 Connections

    PD544 & PD545 Connections

    PD546 & PD547 Connections

    PD548 & PD549 Connections

    PD540 & PD541 Cutouts

    1/16 DIN (48 x 48)

    PD542 & PD543 Cutouts

    1/8 DIN (H) (96 x 48)

    PD544 & PD545 Cutouts

    3/16 DIN (72 x 72)


    PD546 & PD547 Cutouts

    1/8 DIN (V) (48 x 96)

    PD548 & PD549 Cutouts

    1/4 DIN (96 x 96)

    Data Sheet:LDS540_1 Datasheets

    Instruction Manual: LIM540_1 Instruction Manuals

    Quick Start Manual:

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