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KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
14
The meaning of the individual control parameters is:
S (%
or
°C)
–
setpoint.
P (%
or
°C)
–
current value.
O (%
or
°C)
– PID controller output.
TI (s) –
integration component.
KP
–
proportional constant.
TD (s)
–
derivative component.
PID–Regulation
values are only available for some components.
OrderHeat
,
OrderCool
(--/1/2/3/…)
– this parameter determines the order of the component
in the heating or cooling sequence. Selection -- means that the component will not be
included in the sequence. The order used depends on the number of components in every
sequence. For example, in the case of three heating components in the order of mixing,
recuperation and water heating, the order is set to mixing 1, recuperation 2, and water
heating 3. In the case of two cooling components in the order of heat recovery and
condensing unit, the heat recovery is set to order 1 and condensing unit to 2. The components
may not have the same order in the same sequence.
Control
(0–10V/
2–10V/10–0V/10–2V
)
– this parameter determines the range of the output
control signal for the actuator typically controlling the valve or damper. This value is selected
according to the type of actuator used.
0–10V
– Output signal 0% = 0V, 100% = 10V.
2–10V
– Output signal 0% = 2V, 100% = 10V.
10–0V
– Output signal 0% = 10V, 100% = 0V.
10–2V
– Output signal 0% = 10V, 100% = 2V.
0–5V
– Output signal 0% = 0V, 100% = 5V. It applies for glycol only.
TimeOpen
(90s)
– time for the actuator to move from one extreme position to the other.
When monitoring the actuator position feedback signal, the difference between the predicted
and actual position may indicate a malfunction of a device mechanically connected to the
actuator (damper, valve, etc.). If the actuator position feedback signal is not monitored, this
value of the assumed damper position is only informative.
Nonsensitive
(20%)
– this parameter is only meaningful when monitoring the damper position
feedback signal. If the difference between the predicted and actual damper position is greater