User Guide - Eurotherm Ltda

nanodac RECORDER/CONTROLLER: USER GUIDE4.8.3 Programmer Set Up Menu (Cont.)Prog Edit Access Sets the minimum access level (Logged off, Operator, Supervisor, Engineer) for loadingprograms, and for allowing edits to the current program including permission to advancea segment.Prog Store Access Sets the minimum access level (Logged off, Operator, Supervisor, Engineer) that allowsusers to copy, store and delete programs.Rate Resolution Sets the resolution (0 to 4 decimal places) of ramp rates when read from / written to viascaled integer comms.Ch1 Units Five-character (max.) descriptor for channel 1 units. If wired, the units will be those ofthe wire source.Ch1 Resolution Number of decimal places for channel 1 value. If wired, the value will be that of the wiresource.Ch1 Servo To Determines whether the programmer starts running channel 1 from the control loop'sconfigured set-point (servo to SP), or from the current process value (servo to PV).Ch1 PV Input Various programmer functions (for example Ch1 Servo to PV), require the PV value ofthe loop that the programmer is trying to control. The parameter is normally wired fromthe loop's Track PV parameter.Ch1 SP Input Various programmer functions (for example Ch1 Servo to SP), require the SP value ofthe loop that the programmer is trying to control - it is normally wired from the loop'sTrack SP parameter.Ch2 Units As ‘Ch1 Units’, above but for channel 2. Appears only if ‘Channels’ is set to ‘2’.Ch2 Resolution As ‘Ch1 Resolution’, above, but for channel 2. Appears only if ‘Channels’ is set to ‘2’.Ch2 Servo To As ‘Ch1 Servo To’, above, but for channel 2. Appears only if ‘Channels’ is set to ‘2’.Ch2 PV Input As ‘Ch1 PV Input’, above, but for channel 2. Appears only if ‘Channels’ is set to ‘2’.Ch1 SP Input As ‘Ch1 SP Input’, above, but for channel 2. Appears only if ‘Channels’ is set to ‘2’.Power Fail Action If the power supplied to the instrument is interrupted, the program status is retainedand when power is restored, the instrument performs the selected power fail action.Continue: The programmer set-point returns immediately to its last value prior to thepower down and the program continue to run from that point.Reset: The program resets.Ramp Back: The programmer servos the programmer set-point to the channel PV, andramps to the target set-point at the rate prior to the power-fail. The time remaining forthe segment is recalculated.Notes:1. If the interrupted segment was a 'time to target' ramp, then when power is returned the calculatedramp rate prior to the interruption is used.2. If the interrupted segment was ‘Dwell’, then the ramp rate is determined by the previous rampsegment. On achieving the dwell set-point, the dwell period continues.3. If a previous ramp segment does not exist (i.e. the first segment of a program is a dwell), the dwellcontinues at the 'servo to PV' programmer set-point.Max Events Configures the maximum number of event outputs (0 to 8).Reset Event N Sets the state of event output ‘N’ when the program is in reset. Appears only if ‘MaxEvents’ is > (N-1).Reset Ch1 UV Enter the value to be written to user value 1 when the program is in reset. Appears onlyif ‘User Value’ feature is enabled in Programmer.Features configuration (Section 4.8.1).Reset Ch2 UV Enter the value to be written to user value 2 when the program is in reset. Appears onlyif ‘User Value’ feature is enabled in Programmer.Features configuration (Section 4.8.1)and ‘Channels’ = ‘2’RunThe input that causes the programmer to place the current program in Run mode.HoldThe input that causes the programmer to place the current program in Hold mode.HA030554Issue 7 Nov 12Page 129