gefran 850 User Manual

80209C_MHW_850-1650-1850_01-2020_ENG_pag. 212
5.13.4. Programmer behavior
The change in local setpoint, which occurs during a program
stop phase, causes the restart of the step in execution, with
conservation of the set ramp time.
If the controller is switched off and then on again, program
execution can continue, or restart from the first step, or
search for the step with the setpoint closest to process vari-
able PV.
Behavior at restart is defined by the value of the parameter
Strt on the PR.OPT submenu.
STOP/START switching at end of program resets the pro-
gram and restarts the program.
The Autoreset function implies that programmer reset is ac-
tive in the stop phase, with consequent acquisition of PV
value as active setpoint and resetting of the time base.
With the controller in manual, or with remote absolute set-
point, the programmer time base is stopped.
When switching from remote to local setpoint, the setpoint
assumes the value of the remote setpoint at the time of
switching if the parameter LO.rE = BUMPL.
When the programmer reaches the END state, the third bar-
graph, used for example on models 1650-1850 to display
delivered power, lights up completely.
At exit from programmer END state, the third bargraph once
again shows the value of the quantity set in parameter bAr.3
(HOME.1 menu or HOME.2 menu).
5.13.5. Program examples
5.13.5.1. ONE STEP program
Project conditions:
• ramp time = 0;
• hold;
• HBB enabling;
• switch-off
PV
SP
RSET STRT
tempo
Wait band
Wait band
END display
END output
Soak time
Setpoint
5.13.5.2. ONE STEP program
Project conditions:
• ramp time = 0;
• hold;
• HBB enabling;
• hold at end of program.
PV
SP
RSET STRT
tempo
Wait band
Wait band
END display
END output
Soak time
Setpoint

gefran 850 Specifications

General

Brand	gefran
Model	850
Category	Temperature Controller
Language	English