Sigma C4 manual Internal Error Shutdown Conditions

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1.5.7 Internal Error Shutdown Conditions

The C4 monitors system health by keeping track of three additional areas; they are:

Processor health

Tracked by watchdog timer

Memory condition

Checked at startup

Setup parameter table

Checked continuously as used

Some detected internal errors can be repaired on the fly. If this is possible, the C4 will recover from the error and you will not know the error existed. If, however, the error is not repairable and the system must be shut down, an error message will be displayed to help you understand what happened and how to prevent or cope with it. See Section 3.7.

1.5.8 Fahrenheit Temperature Scale Supported

The controller will now operate in either Celsius /C or Fahrenheit /F mode. See Section 3.4.

1.5.9 Temperature Probe Correction (Calibration)

The C4 will allow you to enter data via the Setup mode that will correct anomalies in the temperature readings and control. Such adjustments are sometimes necessary to optimize accuracy at a particular temperature, or to compensate for differences between raw probe temperature data and actual temperatures. These differences can be the result of probe placement, effects of the unit under test on the temperature data, or other causes. See Section 3.8

1.5.10“Bumpless” Temperature Control

(Not in this release. Available in next release, without charge. Check the Sigma Systems FTP or WWW site for downloadable file.)

When the setpoint is changed, the PID control algorithm begins a new “search” for the right amount of heat and/or cooling to maintain the new setpoint. Normally, for each new setpoint, the PID routines begin the search anew... behaving as if the controller was just turned on. The controller will quickly determine that heat or cooling is called for, and while the chamber or platform advances toward the new Setpoint, the PID routine adjusts for the response to heat and cool and methodically settles the chamber or platform in on the new setpoint. For most setpoint changes, where the new and old setpoints are quite different, this is a fast, accurate and appropriate method of control.

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C4 Manual Rev 7.5.2

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Contents Programmable Temperature Controller / Interface Sigma SystemsC4 Manual Rev Table of Contents Intelligent 2 Probe Control C4 Manual Rev C4 Manual Rev C4 Manual Rev C4 Manual Rev Introduction Models C4 & CC-3.5ExplainedGeneral Description Custom Features / Interchangeability Warning Release 7.5.2 FirmwareC4 vs. CC-3 Differences What’s New Firmware Uploads Forced Start from Prom Firmware Internal Error Shutdown Conditions Intelligent 2 Probe Control Probe Averaging Program Mode Step Insert & Delete RSA Remote Mode Setup Parameter Commands Physical Description Front PanelMode Switch Clear Prog Rear Panel Connections J1 TOP200 100c 392 148f General Operation & Error ConditionsC3-5 Rel Startup DisplaysUpdating Firmware Upgrading Firmware by Prom Replacement Making the physical connection for upload Su res Restoring Setup Parameters to Default ValuesRs load Ee busy and then su doneC4 Manual Rev P1f Fahrenheit OperationProbe Out of Range Shutdown System Operating Temperature RangeP1 lo P1 hi P1 err P1 -err All res Internal Error Shutdown ConditionsRes err Su err Software Probe Correction CalibrationStatus and Error Reporting Fail-safe System C4 Manual Rev Intelligent 2 Probe Control How Intelligent 2 Probe Control functions Preparing for Intelligent 2 Probe Control Using Intelligent 2 Probe Control Local Mode Basic Operation Displaying TemperatureDisplaying and Changing the Setpoint S1 102.6 s1fS1 nsp S1f nsp Controlling to a Setpoint Sor -sorSp err C4 Manual Rev Description of a Program Step Program Mode06.0 Ramp time Substep Step Data 00.000.1 00.2Maximizing Ramp Speed & Other Ramp Considerations Clearing Program Memory Reinitializing program steps Displaying Program Steps not during executionPress CLEAR/ENTRY Entering or Changing a Program StepInsert Program Step Running Executing a Program Delete Program stepPress CLEAR/ENTRY Press CLEAR/ENTRY again Program Run Time Information/Considerations 005 sor Sor 007 nop2Loop Special Commands External Compressor On Common Programming Issues C4 Manual Rev IEEE-488 Interface Remote ModeEIA-232 Interface Command Summary by functional group System Information QueriesSystem Information Queries For Celsius mode For parameters numbered 0 through C4 Manual Rev Operation Information Queries & Commands REerror byteCRLF C4 Manual Rev Qccrlf PTnCRLF Setup Parameter Commands SC1 0 2.3 100 WP 6 5 5CRLF Upcrlf System Operation Commands Celsius mode Will hold the current setpoint for 1 hour and 20 minutes U1c 65.0 u1f Error and Status Reporting Overview IEEE-488 GpibTemperature in 20 minutes C4 Manual Rev Error/Status String Bit Definitions C4 Manual Rev Setup Mode PID controller, Integral term Adjustment not Displaying the Field Values Auto-start Mode Setup field Changing the Value of a Setup FieldTwo Probe Mode Setup field Blower Shut-off Mode Setup field Temperature Control Terms PID Setup fields 0, 10, 11Entering probe correction setup data C4 Manual Rev C4 Manual Rev Appendix Programming Examples & Notes00.3 00.000.2 00.4Using shortcuts to shorten program entry time 9900 DISP/CNTLSTART/STOPCLEAR/ENTRY 6 Enter 04.3 04.004.2 04.407.3 07.007.2 07.4C4 Manual Rev Sigma Systems C4 Programming Worksheet Sample Command Structure for IEEE-488 Gpib Operation Disp A$ Installation and Use of TTL Outputs and Input Field Calibration of Model C4 Controller 101102 Troubleshooting 103Noise Immunity 105 Firmware Upload Problems Temperature Control PID Tuning & Problems 107108 109 110 111 U1f 102.7 Technical Support, Repairs & ReturnsIndex 113114 Gpib 115IEEE488 Gpib 117 118 SRQ 119120