0x90/Marlin
12
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

Separate the maximum integral power for the bed from PID_INTEGRAL_DRIVE_MAX / PID_MAX.

Browse source 
My PID_INTEGRAL_DRIVE_MAX was at 96, which was insufficient for my bed
to reach its intended temperature. The head requires a low maximum power since
I run on 24 volts and it has a somewhat low thermal mass.
This commit is contained in:
Jonathan Bastien-Filiatrault 2015-05-28 11:30:56 -04:00
parent a8a8f236d2
commit e86f2342c0
2 changed files with 4 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
Marlin/Configuration.h
View file

@ -243,6 +243,8 @@ Here are some standard links for getting your machine calibrated:
//#define PID_BED_DEBUG // Sends debug data to the serial port.
#ifdef PIDTEMPBED
#define PID_BED_INTEGRAL_DRIVE_MAX MAX_BED_POWER //limit for the integral term
//120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
//from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
#define DEFAULT_bedKp 10.00

4
Marlin/temperature.cpp
View file

@ -361,7 +361,7 @@ void updatePID() {
}
#endif
#ifdef PIDTEMPBED
temp_iState_max_bed = PID_INTEGRAL_DRIVE_MAX / bedKi;
temp_iState_max_bed = PID_BED_INTEGRAL_DRIVE_MAX / bedKi;
#endif
}
@ -844,7 +844,7 @@ void tp_init() {
#endif //PIDTEMP
#ifdef PIDTEMPBED
temp_iState_min_bed = 0.0;
temp_iState_max_bed = PID_INTEGRAL_DRIVE_MAX / bedKi;
temp_iState_max_bed = PID_BED_INTEGRAL_DRIVE_MAX / bedKi;
#endif //PIDTEMPBED
}