Here are some examples of control systems using the SC-20 including diagrams of supported
installations, tips for programming and diagrams of electric connections.
5.2. Heater with external alarm control system.
5.3. Heater and fan control system.
6. DIGITAL INPUT.
7. ALARM MESSAGES.
Controller has digital input D1 for emergency states signalling, such as system failure,
pressure control or safety thermostat activation, etc. Input type (normally opened, normally
closed) is programmed by F50 parameter. After opening/closing circuit of 4-5 digital input, the
controller turns off the main output and turns on the sound signaller (beep) and an auxiliary output
and the display shows A11 code. Emergency state sound signalling can be maintained, until the
alarm reset by using the buttons (F50=2 or 4).
When alarm activates the indicator starts to blink and the sound signaller (beep) activates
(when F83=1). According to the occurence controller turns on/off output and the front panel
displays one of the following alarm messages:
8
Statement
Occurence
digital input activation F50
T1 sensor error:
open circuit or short circuit
Output operation
auxiliary output active, the main inactive
auxiliary output active, the main inactive
T2 sensor error:
open circuit or short circuit
auxiliary output active, the main inactive
high temperature alarm F15
auxiliary output active, the main depends on
the setting of F52
low temperature alarm F16
auxiliary output active, the main depends on
the setting of F52
T1+T2
2
5.7. Chamber, incubator and boiler with adjustment calculated from the arithmetic
mean of the measurements from two temperature sensors T1 and T1 PRECISE
control system.
F12=1
°C
F12=1
°C
79°C
80°C
Main
output
Time
Time
Temp.
0
1
81°C
Functions performed by the controller in the system:
–heater control
–external acoustic signaller control
–system protection against overheating and freezing
–emergency states sound signalling
Tips for parameters programming:
F10 = 2 (temperature measurement from two sensors T1
and T2)
F11 = temperature setting
F12 = heater switching hysteresis, for example 1 °C
F15 = high temperature alarm, for example 85 °C
F16 = low temperature alarm, for example 5 °C
F17 = 0.1; F21 = 0;
F29 = HEATING;
F50 = 0; F51 = 1; F52 =0
Auxiliary
output
1
85°C
5°C
F15
F11
F16
Time
0
F12=1
°C
F12=1
°C
79°C
80°C
Main
output
Time
Time
Temp.
0
1
81°C
Functions performed by the controller in the system:
–heater control (boiler, electric heater, etc.)
–external acoustic signaller control
–system protection against overheating and freezing
–emergency states sound signalling
Tips for parameters programming:
F10 = 0 (system temp. measurement from T1 sensor)
F11 = temperature setting
F12 = heater switching hysteresis, for example 1 °C
F15 = high temperature alarm, for example 85 °C
F16 = low temperature alarm, for example 5 °C
F17 = 0.1; F21=0; F29=HEATING
F50 = 0 or 2 (2 – if you used the external safety thermostat
STB connected to the D1 input)
F51 = 1 (sound signaller active)
F52 = 0 (heater off in danger point)
Auxiliary output
Time
0
1
85°C
5°C
F15
F11
F16
F12=1
°C
F12=1
°C
19°C
20°C
Main
output
Time
czas
Temp.
0
1
21°C
Functions performed by the controller in the system:
–heater heating up the chamber control
–fan cooling the chamber control
–emergency states sound signalling
Tips for parameters programming:
F10 = 0 (temperature measurement from T1 sensor)
F11 = temperature setting
F12 = heater switching hysteresis, for example 1 °C
F15 = temperature setting of switching the fan cooling the
chamber, for example 30 °C
F16 = OFF
F17 = 0.1; F21 = 0
F29 = HEATING
F50 = 0 or 2 (2 – if you used the external safety thermostat
STB connected to the D1 input)
F51 = 0; F52 = 0
Auxiliary output
1
30°C
F15
F11
Time
0
SC-20
T1 - boiler temperature sensor
T2 - fireplace temperature sensor
Heater max. 3200W, Signaller 230V~
Power supply
230V~
20(8)A
8(2)A
T2
Electr.
Heater
Alarm
13 14 15 16
12
11
Alarm
Heater
SC-20
T1 - main temperature sensor
D1 - external safety thermostat STB
Heater max. 3200W, signaller 230V~
Power supply
230V~
20(8)A
8(2)A
Thermostat
STB
13 14 15 16
12
11
Wentylator
Grzałka
SC-20
T1 - main temperature sensor
D1 - external safety thermostat STB
Heater max. 3200W, fan 400W 230V~
Power supply
230V~
20(8)A
8(2)A
Termostat
STB
13 14 15 16
12
11
BOILER
T1
T2
Heater
~
2
3
0
V
Alarm
M
set
T1
Alarm
Heater
M
set
T1
Fan
Heater
M
set
