Remak VCS Installation And Operating Instructions Manual page 102

PLC Controller for Compressor Output Control
Viewing Temperatures and Alarms
Viewing Temperatures
1. Briefly press the SET button to display "Pen".
2. Using the arrows, scroll to "Prb" and press the SET
button to confirm.
3. Scroll to the temperature analogue input (Anxx) and
press the SET button to confirm.
4. The display shows the temperature of the corresponding
sensor.
Viewing Analogue Output Values
1. Briefly press the SET button to display "Pen".
2. Using the arrows, scroll to "AO" and press the SET
button to confirm.
3. Scroll to the analogue output (AOnxx) and press the SET
button to confirm.
4. The display shows the value of the corresponding
analogue output.
Viewing Alarms
1. Briefly press the SET button to display "Pen".
2. Using the arrows, scroll to "AL" and press the SET
button to confirm.
3. A corresponding alarm is displayed. If more than one
alarm is displayed, use the arrows to scroll between
them.
Main Functions
Viewing and Changing Basic Parameters
1. Briefly press the SET button to display "USr".
2. Press the SET button to confirm.
3. Using the arrows, scroll to the desired parameter and
press the SET button to confirm.
4. Using the arrows, change the value and press the SET
button to confirm.
5. To return to the menu, press the ESC button.
Changing Values of any Parameter
Simultaneously press the SET + ESC buttons to switch the
device to the programming mode (the indicator comes ON).
At the same time, the "Par" is displayed. Press the SET but-
ton to confirm.
Using the or buttons, select the parameter group and
press the SET button to confirm.
Using the or buttons, select the parameter.
Press the SET button to display its current value.
Using the or buttons, set the new value of the parameter.
Press the SET button to save the value.
Exit: To return to the main screen, press the ESC button or
wait 60 seconds.
Note: Some parameters require a code to be displayed.
Hidden Parameters
To display hidden parameters, enter a code when opening the
programming menu.
1. Simultaneously press the SET + ESC buttons to switch
the device to the programming mode (the indicator
comes ON). At the same time, "Par" is displayed.
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2. Using the buttons, select "PASS" and press the
SET button to confirm.
3. Using the buttons, enter the numerical code
required for the parameter group in question (Level 1 or
2) and press the SET button to confirm.
4. Then proceed in the same way as in point 6.2. Now the
parameters are visible.
Exit: To return to the main screen, press the ESC button or
wait 60 seconds.
Parameters
User Parameters (S---)
n S-00 Pre-set evaporation temperature
(-10.0 to 10.0°C):
A value limiting the unit's output depending on the
evaporation temperature.
n S-01 Pre-set condensation temperature
(30.0 to 90.0°C): A value limiting the unit's output
depending on the condensation temperature.
n S-02 Condenser settings (20.0 to S-01°C):
A pre-set value of the condensation pressure to control
the condenser fans. If used.
n S-04 Start (Yes/No): If "Yes" is set, the unit is started
at 100 % output regardless of the input signal control
value. Level 1 (PASS = 1) – only for service (P---)
n P-16 Maximum compressor discharge temperature
(90.0 to 140.0 °C): When this temperature is exceeded,
the compressor is switched off.
n P-20 Minimum compressor runtime (5 to 120 sec):
If the compressor is switched on, it can only be switched
off once this time has elapsed. This is a safety value.
P-21 Minimum compressor off time (30 to 300 sec):
n
If the compressor is switched off, it can only be switched
on once this time has elapsed. This is a safety value.
P-22 PWM valve switching period (10 to 20 sec):
n
Switching period of the digital compressor power valve
P-23 Pen HP (3 to 10 sec):
n
Allowed number of high-pressure pressostat failures per
P-24 time.
n P-24 Pei HP (15 to 60 sec):
Time interval for counting high-pressure pressostat
failures.
n P-25 Pen LP (3 to 10 sec):
Allowed number of low-pressure pressostat failures
per P-24 time.
n P-26 Pei LP (15 to 60 sec):
Time interval for counting low-pressure pressostat failures.
Level 2 (PASS = 2) – only for service (P---)
n P-01 PID LP Udz: PID control upper insensitive zone.
n P-02 PID LP Ldz: PID control lower insensitive zone.
n P-03 PID LP Bp: PID control proportionality zone.
n P-04 PID LP Ti: PID control integration constant.
n P-05 PID LP Td: PID control derivative constant.
n P-06 PID LP Arw: PID control anti-reset lift.
n P-07 PID LP Speed: Maximum number of PID
output changes per 1 sec.
n P-10 Hyst UP Ext: Upper hysteresis for the cooling
unit start. When this limit is exceeded, the input analogue
signal is accepted.