Pixsys DRR244 - Page 31

User manual - DRR244 - 31
77 d . t. 1 Derivative Time 1
Derivative time for process 1 P.I.D. regulation (Normally ¼ of integral time).
0.0...1000.0 secondi (0.0 = derivative disabled), Default 0
78
d. b. 1 Dead Band 1
Dead band of process 1 P.I.D..
0...10000 [digit
1 p. 54
] (degrees.tenths for temp. sensors) (Default: 0)
79
p. b. c.1 Proportional Band Centered 1
Defines if the proportional band 1 must be centered or not on the setpoint. In double loop
functioning (heating/cooling), always disabled.
diS a b. Disabled. Band under (heating) or over (cooling)(Default)
Enab. Centered band
80
o . o .s.1 Off Over Setpoint 1
In P.I.D. enables the command output 1 switching off, when a certain threshold is exceeded
(setpoint + Par.81)
diS a b. Disabled (Default)
Enab. Enabled
81
o.d.t.1 Off Deviation Threshold 1
Selects deviation from command setpoint 1, to calculate the intervention threshold of “Off Over
Setpoint 1“ function.
-9999...+9999 [digit
1 p. 54
] (degrees.tenths for temp. sensors) (Default: 0)
82
c. t. 1 Cycle Time 1
Cycle time for P.I.D. regulation of process 1 (for P.I.D. on remote control switch 15 s; for PID on SSR
2s). For valve refer to parameter 47
va.t.1
1-300 seconds (Default:15 s)
83
c o . F.1 Cooling Fluid 1
Type of refrigerant fluid for heating / cooling P.I.D. for process 1. Enable the cooling output on
parameter AL.1 .. AL.6.
Air Air (Default)
oiL Oil
Water Water
84
P. b .M.1 Proportional Band Multiplier 1
Proportional band multiplier for heating/cooling P.I.D. for process 1. Proportional band for
cooling action is given by parameter P.B. 1 multiplied for this value
1.00...5.00. Default: 1.00
85
o.d.b.1 Overlap / Dead Band 1
Dead band combination for heating / cooling P.I.D. (double action) for process 1.
-20.0%...50.0%
Negative: Dead band.
Positive: overlap. Default: 0.0%
86
c. c. t.1 Cooling Cycle Time 1
Cycle time for cooling output in hating/cooling P.I.D. mode for process 1.
1-300 seconds (Default:10 s)
87
L. L.P.1 Lower Limit Output Percentage 1
Selects min. value for command output 1 percentage.
0%...100%, Default: 0%.