Electrothermal MC810B MKII - Page 15

Page 15 of 24 M6493 Issue 10.3
7.11. Configuring Parameters.
7.11.1. To select the parameter, enter Programming mode press and
button for 5 seconds.
Use the and buttons to select the parameter for modification.
Press the button to display the value.
By keeping the button pressed, use the and buttons to
set the desired value.
When the button is release, the newly programmed value will be stored.
The newly programmed value is stored and the following parameter is displayed.
To exit from the setup, press the or wait for 30 seconds.
PAR
RANGE
DESCRIPTION
SCL
1°C;
2°C;
°F
Read out scale (see table of input specifications)
Caution: upon changing the SCL value, it is the absolutely necessary to reconfigure the
parameters relevant to the absolute and relative temperatures (SPL, SPH, 1SP, 1HY ect…).
SPL
-50°..SPH Minimum limit for 1SP setting.
SPH
SPL..150°C Maximum limit for 1SP setting.
1SP
SPL..SPH Set-point (value to be maintained in the room).
1CM
HY;PID Control mode.
With 1CM=HY you select control with hysteresis: parameters 1HY, 1T0 and 1T1 are used.
With 1CM=PD you select a Proportional-Integral-Derivative control mode: parameters 1PB, 1IT,
1DT, 1AR, 1CT will be used.
1CH
REF;HEAS Refrigerating (REF) or Heating (HEA) control mode.
1CM=HY
1HY
0…19.9°C OFF/ON thermostat differential. With 1HY =0 the output is always off.
1TO
0…30min Minimum off time.
After output 1 has been turned off’ it remains inactive for 1TO minutes regardless of the
temperature value measured.
1T1
0…30 min Minimum on time. (The following parameter will be 1PF).
After output 1 has been turned on, it remains active for 1T1 minutes regardless of the
temperature value measured.
1CM=PID
1PB
0.19.0°C
Proportional bandwidth.
Temperature control takes place by changing the
ON time o the output: the closer the temperature to
the set-point, t he less time to activate. A small
proportional band increases the promptness of the
response of the system to temperature variations,
but tends to make it less stable. A purely
proportional control stabilises the temperature
within the proportional band but does not cancel
the deviation from the set-point.
With 1PB=0 the output is always off.