Page 1
CN32Pt, CN16Pt, CN16PtD, CN8Pt, CN8PtD Temperature & Process Controllers...
Page 2
PLATINUM Series User’s Guide Introduction The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice. Omega Engineering | www.omega.com...
Some additional standard features are remote Setpoint for cascaded control setups, High-high/Low-low Alarm functionality, external latch reset, external Ramp and Soak program initiation, combination Heat/Cool Control Mode, configuration save and transfer, and configuration password protection. Omega Engineering | www.omega.com...
Reference Section (the blue section headers however, are not hyperlinks). In addition, the Table of Contents on pages 3 through 6 is hyperlinked to all of the entries throughout the manual that are listed in it. Omega Engineering | www.omega.com...
Failure to follow all instructions and warnings is at your own risk and may result in property damage, bodily injury and/or death. Omega Engineering is not responsible for any damages or loss arising or resulting from any failure to follow any and all instructions or observe any and all warnings.
Digital input signal (latch reset, etc), Positive at > 2.5V, ref. to ISO GND ISO GND Isolated ground for serial communications, excitation, and digital input RX/A Serial communications receive TX/B Serial communications transmit Table 1.1 – 10-Pin Input Connector Wiring Summary Omega Engineering | www.omega.com...
Page 12
RTD (100 Ω) 2-WIRE (requires pin 1 to be jumpered to pin 4) Figure 1.4 – RTD Wiring Diagram 0–24 mA 0–24 mA Internal Internal Excitation Excitation External Jumper Excitation Figure 1.5 – Process Current Wiring Hookup with Internal and External Excitation Omega Engineering | www.omega.com...
AC power hot in pin N.C. Normally closed relay load Negative DC power in pin DC Ground Positive DC power in pin Load for DC pulse V/C+ Load for analog Table 1.5 – Definitions for Abbreviations in Table 1.4 Omega Engineering | www.omega.com...
Programming Mode: These settings are frequently changed. They include Setpoints, PRoG Control Modes, Alarms, etc. These settings can be password-protected. Operating Mode: This mode allows users to switch between Run Mode, Standby Mode, oPER Manual Mode, etc. Omega Engineering | www.omega.com...
Page 16
Alarm 2 status mapped to “1” oUt# Output state selections by name ANN.2 ALM.2 Alarm 2 status mapped to “2” ALM.1 Alarm 1 status mapped to “2” oUt# Output state selections by name NCLR Default display color: Green AMbR Amber Omega Engineering | www.omega.com...
Page 17
PRot Ethernet port configuration AddR ____ Ethernet “Telnet” requires Address PRot Serial port configuration C.PAR bUS.F 232C Single device Serial Comm Mode Multiple devices Serial Comm Mode bAUd 19.2 Baud rate: 19,200 Bd 9600 9,600 Bd Omega Engineering | www.omega.com...
Page 18
VER.U ENTER downloads firmware update F.dFt ENTER resets to factory defaults I.Pwd No required password for INIt Mode ____ Set password for INIt Mode P.Pwd No password for PRoG Mode ____ Set password for PRoG Mode Omega Engineering | www.omega.com...
____ Delay turning off Alarm (sec), default = 0.0 ALM.2 Alarm 2 oUt1 oUt1 is replaced by output type Note: This submenu is the same for all other outputs. ModE Output does nothing PID Control Mode Omega Engineering | www.omega.com...
Page 20
Remote analog Input sets SP1; range: 4–20 mA Note: This submenu is the same for all RM.SP ranges. RS.Lo ____ Min Setpoint for scaled range IN.Lo ____ Input value for RS.Lo RS.HI ____ Max Setpoint for scaled range Omega Engineering | www.omega.com...
Manual Mode, the RIGHT and LEFT buttons simulate the input for testing PAUS Pause and hold at current process value, display flashes StoP Stop controlling, turn off outputs, process value rotating flash, Alarms remain L.RSt Clears any latched Alarms; Alarms menu also allows digital input reset Omega Engineering | www.omega.com...
Select the indicated setting. 4.1.1 Thermocouple Input Type (INIt > INPt > t.C.) Select Thermocouple (t.C.) as the input type (factory default). Then specify a specific type of thermocouple or the last selected type will be used. Omega Engineering | www.omega.com...
• 385.5 – European curve for 500 Ω • 385.t – European curve for 1000 Ω • – Old US standard (rarely used), at 100 Ω only • 3916 – Japanese standard, at 100 Ω only Omega Engineering | www.omega.com...
Gain = (Rd.2 – Rd.1) / (IN.2 – IN.1) Offset = Rd.1 – (Gain * IN.1) Therefore scaling can be done over a subset of the applicable range as this scaling calculation linearly extrapolates in both directions. Select the scaling method to be used. Omega Engineering | www.omega.com...
F.FFF – Three decimal places (not a choice with temperature inputs) Select the indicated format. 4.2.2 Temperature Units (INIt > RdG > °F°C) Select the Temperature Units (°F°C) parameter, and the current temperature unit selection is then displayed. Omega Engineering | www.omega.com...
The ANN.1 and ANN.2 parameters work the same way except that they control the “1” and the “2” front display annunciators, respectively, and have different default values. Omega Engineering | www.omega.com...
5 V – 5 Volt excitation voltage (factory default) • 10 V – 10 Volt excitation voltage • 12 V – 12 Volt excitation voltage • 24 V – 24 Volt excitation voltage • 0 V – Excitation turned off Select the indicated option. Omega Engineering | www.omega.com...
Select the Protocol (PRot) parameter. Navigate to the desired setting. Settings include the following: • oMEG – (factory default) Omega’s Protocol, using standard ASCII encoding. Further detail on this format is covered in the Communications Manual. • M.bUS – Modbus protocol, available as Modbus RTU (RtU, default) or Modbus/ASCII (ASCI).
Select the Address (AddR) parameter. Set the Address value. The Modbus protocol requires an address field to correctly identify the selected device. The Omega protocol supports an optional address field which is required for Serial channels configured for RS485. Accept the entered value.
Page 30
EVEN – Even parity used to verify communications • NoNE – Parity is not used to verify communications Select the indicated option. 4.4.3.4 Data Bits (INIt > CoMM > SER > C.PAR > dAtA) Select the number of Data Bits (dAtA). Omega Engineering | www.omega.com...
ENTER button again will start running the current program Select the desired setting. 4.5.3 Setpoint Limits (INIt > SFty > SP.LM) Select Setpoint Limits (SP.LM) to set limits on the values that can be used for the all Setpoints. Omega Engineering | www.omega.com...
This capability can be especially useful for editing complex multi ramp and soak programs. For more information on the configuration file format, see the “Load and Save File Format Manual”. Select a numeric file name from the range 0–99. Omega Engineering | www.omega.com...
INIt Select the indicated setting. If yES, set the numeric password from the range 0000–9999. Confirm the password. 4.13 Password-Protect Programming Mode Access (INIt > P.Pwd) Select the Password Protect Programming Mode Access (P.Pwd) function. Omega Engineering | www.omega.com...
– The value specified for SP2 indicates an offset (positive or negative) from SP1; this allows SP2 to track any changes to SP1 automatically Select the indicated setting. Set the correct value. Confirm the value. Omega Engineering | www.omega.com...
(Absolute Mode) or within the band around the specified Setpoint as determined by ALR.L and ALR.H (Deviation Mode) Note: Table 5.1 compares the Alarm range options, and Figure 5.1 represents the Alarm range options graphically. Select the indicated setting. Omega Engineering | www.omega.com...
Set the Alarm High Reference value. Confirm the value. 5.3.4 Alarm Low Reference (PRoG > ALM.1, ALM.2 > tyPE > ALR.L) Select the Alarm Low Reference (ALR.L) parameter. Set the Alarm Low Reference value. Confirm the value. Omega Engineering | www.omega.com...
– Alarm latches and can be unlatched either by using oPER > L.RSt from the front panel or via the digital input • RMt – Alarm latches and can be unlatched only via the digital input Select the indicated option. Omega Engineering | www.omega.com...
5.3.11 Alarm Off Delay (PRoG > ALM.1, ALM.2 > dE.oF) Select the Alarm Off Delay (dE.oF) parameter. Set the number of seconds to delay cancelling the Alarm. (The default is 0.) This setting can be used to prevent Alarm chatter. Confirm the value. Omega Engineering | www.omega.com...
ALM.2 – Set the output to be an Alarm using the ALM.2 configuration • RtRN – Set up the output for Retransmission • RE.oN – Turns on the output during Ramp events • SE.oN – Turns on the output during Soak events Select the indicated setting. Omega Engineering | www.omega.com...
Page 41
For dEAd, set the desired value. (The default is 5.0.) Select the indicated ACtN setting, or confirm the dEAd value. 5.4.1.4 Output as Alarm 1 (PRoG > oUt1–oUt3 > ModE > ALM.1) Select this Output to be an Alarm using the Alarm 1 (ALM.1) configuration. Omega Engineering | www.omega.com...
5.4.2 Output Cycle Pulse Width (PRoG > oUt1–oUt3 > CyCL) Select the Output Cycle Pulse Width (CyCL) parameter. This parameter is used to set the control signal pulse width in seconds for DC pulse, mechanical relay, and solid state relay (SSR) outputs. Omega Engineering | www.omega.com...
Navigate to the desired setting. Settings include the following: • RVRS – “Reverse Action”: Increase to SP1, such as heating (factory default) • dRCt – “Direct Action”: Decrease to SP1, such as cooling Select the indicated setting. Omega Engineering | www.omega.com...
The P, I, and d factors can initially be set using the autotune function and then fine-tuned manually. Default numeric formats for these parameters are ###.# for P and I and ##.## for d, but the entries can autorange based on the autotune results. Omega Engineering | www.omega.com...
%power to analog outputs or %on time for PWM control with the other output types. (The default and maximum setting is 100.0%.) Set the desired value. Confirm the value. 5.5.7 Adaptive Tuning (PRoG > PId > AdPt) Select the Adaptive Tuning (AdPt) parameter. Omega Engineering | www.omega.com...
RS.HI – Maximum Setpoint value. Setpoint 1 is set to this value when the analog input signal is IN.HI. • IN.HI – Input value in mA or V for RS.HI Select the indicated setting. Set the desired value. Confirm the value. Omega Engineering | www.omega.com...
(FT). The output of the secondary (flow) controller is a control signal for the proportional valve controlling the flow of the steam. By isolating the slowly changing effluent temperature control loop from the rapidly changing flow control loop, a more predictable, robust, and tighter control scheme results. Omega Engineering | www.omega.com...
Navigate to the desired setting. Settings include the following: • No – Multi-Ramp/Soak Mode off • yES – Multi-Ramp/Soak Mode on; must be started from front panel • RMt – Multi-Ramp/Soak Mode on; front panel or digital input to start Select the indicated setting. Omega Engineering | www.omega.com...
Pressing the right arrow at that point will change the setting for that segment to the other time format. 5.7.5 Program End Action (PRoG > M.RMP > E.ACT) Select the End Action (E.ACT) parameter. Omega Engineering | www.omega.com...
– Enable Soak events for this segment. At least one output must be set MoDE = RE.oF for an enabled soak event to actually do anything. Select the indicated setting. Navigate to the correct setting, or set the desired value. Select the indicated setting, or confirm the value. Omega Engineering | www.omega.com...
The Ramp and Soak function attempts to provide a controlled increase to the process variable such that the target setpoint is reached within the specified time. Options are provided to track the specified RAMP time, the specified SOAK time or the overall CYCLE time. Omega Engineering | www.omega.com...
Setpoint value is displayed in the secondary display. With the unit remaining active, the oPER menu selections can be navigated to using the LEFT and RIGHT buttons. Omega Engineering | www.omega.com...
Select the Pause Operating Mode (PAUS) to pause the controller and hold the process input at its current value. If in a Multi-Ramp/Soak program, the timer for the current Ramp or Soak segment is paused as well. The current process value display will flash while in pause mode. Omega Engineering | www.omega.com...
Navigate to any desired initialization or programming settings to change them or to adjust the process. Return to RUN Mode or to displaying “RUN” depending on the Operating Safety parameter setting (4.5.2 Operating Mode Confirmation (INIt > SFty > oPER)). Omega Engineering | www.omega.com...
Up to 99 Saved Ramp and Soak programs • Up to 8 Ramp and 8 Soak segments with individually selectable events per program • Definable End Actions include program linking • Ramp and Soak segment times: 00.00 to 99.59 (for HH:MM and MM:SS) Omega Engineering | www.omega.com...
Ethernet Standards Compliance IEEE 802.3 10/100 Base-T Auto-switching, TCP/IP, ARP, HTTPGET Serial Software Selectable RS/232 or RS/485. Programmable 1200 to 115.2 K baud. Protocols Omega ASCII, Modbus ASCII / RTU Isolation Approvals UL, C-UL, and CE (8. Approvals Information) Power to •...
Page 57
NEMA-4x/Type 4x/IP65 front bezel: 32Pt, 16Pt, 16DPt • NEMA-1/Type 1 front bezel: 8Pt, 8DPt Weight • 8Pt Series: 295 g (0.65 lb) • 16Pt Series: 159 g (0.35 lb) • 32Pt Series: 127 g (0.28 lb) No CE compliance above 60 Hz Omega Engineering | www.omega.com...
Page 58
Failed attempt to write to a communications device E015 Bad reboot, attempt to reboot from an unknown source E016 Signal too unstable to perform autotune E017 Can’t autotune because input signal is on wrong side of setpoint Table 7.2 – Error Code Descriptions Omega Engineering | www.omega.com...
Low-voltage DC power option: Units configured for external low power DC voltage, 12–36Vdc. Ibid. I/O signal and control lines require shielded cables, and these cables must be located on conductive cable trays or in conduits. The length of these cables should not exceed 30 meters. Omega Engineering | www.omega.com...