Controller operating manual
15.11.2020 – Version 1.1
TCS.2 series –
thermofin
®
control system 2
nd
generation
Page: 93/162
Operating manual - translation into English © thermofin GmbH
Picture 69
With these two values the user limits the
possible shift up and down. Depending on the
requested setpoint (NC – normal c FC –
free cooling or HR – heat recovery), both
setpoints react to the same shift value from the
bus.
The value written by the bus (divided by 10) is
added to the setpoint. In this example Picture
68, register 4 (SPS circuit 1 is 100
≙
10.0 °C
and register 5 (circuit 2) is 65
≙
6.5 °C.
With direct communication via MODBUS, the following setting values and limits apply (equally for
circuit 1 + circuit 2:
Circuit
Register
Register value
(signed integer)
Converted to °C/°F
1
4
“Setpoint shifting circuit 1”
-250 ... 250
-25.0 ... 25.0 °C
-450 ... 450
-45.0 ... 45.0 °F
2
5
“Setpoint shifting circuit 2”
-250 ... 250
-25.0 ... 25.0 °C
-450 ... 450
-45.0 ... 45.0 °F
Night time reduction
With this function, the manipulated variable of the fans (speed output) is limited to a maximum value.
The aim is to minimize the noise during rest periods, especially at night and on Sundays and public
holidays. The following 3 control options are available to the user:
In principle, the percentage limit of the speed output can also be sent via the bus (setting
option from 40 ... 100 %). This applies to all three types of control. The value entered in the
menu always forms the upper limit. As a result, as can be seen in the example in Picture 69,
a value of 40 ... 50 % can be sent via the bus. If the sent value is outside the permissible
range, the user receives a message “Values outside the permissible range”. If the register is
not written to (register value: 0), there is no error message.
Register
Register value (INT)
Night time reduction in %
13
“Max speed at night”
400 ... 1000*
40.0 ... 100.0 %*
* A maximum register value of 1000 (
≙
100%) is possible, if the value set in the “Setpoints” menu is also at
100%.
If this value is lower, it represents the upper limit for the value sent via the bus (
.
