Buy Gefran PID Temperature Controller, 48 x 48 (1/16 DIN)mm, 3 Output Relay, Also featuring soft start as well as an auto and manual function, the . View and Download Gefran user manual online. SINGLE DISPLAY TEMPERATURE CONTROLLER WITH UNIVERSAL INPUT. Temperature Controller. Gefran Pdf User Manuals. View online or download Gefran User Manual .

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Indicates the contents of the various manual sections, the general warnings, notes, and other points to which the reader’s attention should be drawn. Indicates a particularly delicate situation that could affect the safety and correct working operation of the controller, or a rule that must be strictly observed to avoid dangerous situations Indicates a suggestion based on the experience of the GEFRAN Technical Staff, which could prove especially useful under given circumstances Indicates a reference to Detailed Technical Documents available on the GEFRAN web site www.

The instruments provides a complete operator interface, protected by a Lexan R membrane that ensures level IP65 faceplate protection.

The main input for the process variable is universal and provides the possibility to connect many types of input sensor: Model can have an auxiliary input for a 50mAac current transformer to monitor the load current. It is also possible to set an alarm point related to the current transformer input gsfran order to check eventual load malfunction.

All the programming procedures of the instruments are facilitated by the grouping of the parameters in function blocks CFG for the control parameters, Inp for the inputs, Out for the outputs, etc.

To kanual the configuration even further, a programming kit is available for PC, which includes a menu driven configuration program for Windows and the necessary cable to connect the instrument see technical data code WINSTRUM.

A configurable personal software protection code password protection can be used to restrict the levels of editing and displaying the configuration parameters.

Electrical Interface All connection terminals power supply, inputs, outputs, options are grouped together on the back of the instrument. For technical specifications and performance details refer to Section 13 “Technical Specifications”. This will allow the controller to be put into service more quickly and will avoid certain problems which may mistakenly be interpreted as malfunctions or limitations of the controller. These details must always be kept close at hand and referred to the personnel involved in the event of help from Gefran Customer Service Assistance.

In the event of presumed instrument malfunction, before contacting Gefran Technical Service Assistance, refer to the F. Installation with Panel Fixing in Section 2. Any inconsistencies, omissions or evident signs of damage should be reported immediately to your Gefran sales agent.

Check that the order code corresponds with the configuration requested for the application the instrument is needed for. For the order code refer to Section 14 “Accessories”. Before proceeding with installation read the following warnings carefully! Remember that lack of observation of these warnings could lead to problems of electrical safety and electromagnetic compatibility, as well as invalidating the warranty.


Electrical power supply essential to connect it up to auxiliary alarm equipment. It is advisable to make sure that alarm signals are also triggered during normal operation. The instrument must NOT be installed in flammable or explosive environments; it may be connected to equipment operating in such atmospheres only by means of appropriate and adequate types of interface, conforming to the applicable safety standards.

EN immunity in industrial environment EN emission in residential environment EN safety. As regards electromagnetic compatibility, the strictest generic standards have been adopted, as indicated in the table below.

The switch must be located in the immediate vicinity of the instrument and must be within easy reach of the operator. One switch may control more than one controller. The electronic instruments and electromechanical power devices such as relays, contactors, solenoid valves, etc. When the electronic instrument power supply is strongly disturbed by the commutation of transistor or power units or motors, an isolation transformer should be used for the controllers only, earthing the screen.

It is essential that the plant has a good earth connection: In the proximity of high frequency generators or arc welders, use adequate mains filters. The power supply lines must be separate from the instrument input and output ones. To connect the analogue inputs and analog outputs the following is necessary: To connect the relay outputs contactors, solenoid valves, motors, fans, etc. The resistances must be at least 2W. Fit a 1N diode in parallel with the coil of the inductive loads that operate in Direct Current.

Use wires of adequate thickness min. It therefore contains essential information for correct programming and configuration of the controllers. Deviation indicator On if deviation is between 0.

Single display controller – Gefran

These gefarn are vefran for any operation that requires a numerical parameter to be raised or lowered. It Integral heating time 0, X Maximum limit heating power 0, Default Custom 22 tr 0 tyP Type of sensor, signal and main input scale 0 dP.

S Position of decimal point for main input scale 0 Lo. S Minimum limit of main input scale min S Maximum limit of main input scale min S 0 1 2 3 Format xxxx xxx. Default Custom 0 aI. Current transformer input variable AL.

Default Custom 0 S. SP Cooling setpoint relative to heating set It Integral cooling time 0, S Digital filter on main input 0, CtrL 0 1 2 3 4 5 6 7 8 9 10 11 Default Custom tr 22 Type of control [ ALn is forced to 1 only for mod. L Lower limit for local setpoint and absolute alarms Lo.

L Upper limit for local setpoint and manyal alarms Lo. RTD 3 wires 16 17 Max. To return to normal functioning, press key F for 5 secs. It signals variations of load absorption by discriminating the level of current at the transformer input in the range It is enabled with configuration code AL. Select the type of functioning and the assigned control output gefraan means of code Hb. The alarm limit setting is A. The direct HB alarm trips if the value of the current transformer manaul is below the set limit for Hb.



The HB alarm can be activated only with ON times longer than 0. HB alarm function also includes control of load current in the OFF interval of the cycle time for the selected output: A in InP for Hb. The alarm is reset automatically if the cause of the alarm is eliminated. Setting a limit of A.

Indication of load current is displayed by selecting term C. If the Integral Time value is too long Weak integral actiondeviation between the controlled variable and the setpoint may persist. B Set the proportional band at 0. C Switch to automatic manua observe the behavior of the variable.

It will be similar to that in the figure: D The PID parameters are calculated s follows: Return to PID action by setting the appropriate relay output cycle time, and switch back to Automatic. F If possible, to optimize parameters, change the setpoint and check temporary response.

If an oscillation persists, increase gefrxn proportional band. If the response is too slow, reduce it.

All outputs alarms and controls are OFF logic level 0, relays de-energized and all unit functions are disabled except the switch-on function and digital communication. How to switch the unit ON: This function can be assigned to a digital input d.

G and excludes deactivation from the keyboard. It can be one of two types: It continuously reads system oscillations, immediately seeking the PID parameter values that reduce the current oscillation. It does not engage if the oscillations drop below 1. It is interrupted if the set-point is changed, and automatically resumes with a constant set-point. The calculated parameters are not saved if the instrument is switched off, if the instrument is switched to manual, or if the configuration code is disabled.

The controller resumes with the parameters programmed before auto-tuning was enabled. It is activated via the Stu parameter as can be seen on the table, the values to be set depend on whether Self-tuning or Soft-start is enabled.

It is useful for calculation of PID parameters when the system is around the set-point. PL hotc. PL coldand assesses the effects in timed overshoot. The calculated parameters are saved. The same time has to run after one-shot. The self-tuning action calculates optimum control parameter values during process startup.

The variable for example, temperature must be that assumed at zero power room temperature. The controller supplies maximum power until an intermediate value between starting value and setpoint is reached, after which it zeros power. PID parameters are calculated by measuring overshoot and the Process time needed to reach peak.