ECKELMANN Case Controller UA 4 E Series, Operating Instruction

Page: 442 / 466

Firmware V3.13 21.04.2021 442/466
ANALOG INPUTS POS: XXXXX Entry Default
RfrSy. tcLT xxx Pack controller CAN bus address for receipt of tc
via CAN bus
Can also be used as backup option in the event of
the failure of the local pressure transmitter
Deactivated with '--'
Can only be used when parameter ”Fct. AIN2” set
to ”tc LT”.
--, 1..9 --
tcZ2-max xxx°C tc maximum value for the dynamically determined
tc setpoint -10..10 -2 °C
tcZ2-min xxx°C tc minimum value for the dynamically determined tc
setpoint -20..10 -10 °C
tcZ2-ramp/m xxxK Maximum increase / change of the dynamically
evaluated tc setpoint
Dynamic evaluation of the tc setpoint switched off
with '--'; in this case the setpoint R4.x is used.
Can only be used when parameter ”Fct. AIN2” set
to ”tc LT”.
--1..100 --
tcZ2-toZ1df xxxK Difference between to and tc for the dynamic
determination of the tc setpoint 0..20 5 K
*Supported refrigerants: R404A, R744 (CO2), R134a, R410A, R717 (NH3), R22, R290, R407C, R507, R1270,
R402A, R502, R407F, R422A, R422D, R408A, R407D, R407A, R427A, R438A, R152a, R170, R600, R600a,
R449A, R450A, R448A, R455A, R447B, R1234ze, R1233zd, R1234yf, R513A
Praxis tip using the example of the ”connection of a pressure transmitter - 1 .. 7 bar”:
Here the indication on the pressure transmitter is clear (-> -1 bar) relative to the ambient pressure The
adjustment of the pressure transmitter in the controller is carried out using absolute pressure values
(the absolute pressure cannot be negative). In order to parameterise the above pressure transmitter
with the relative pressure indication - 1 bar (at 4 mA, i.e. 0 V) at 7 bar ( at 20mA, i.e. 10 V) the ambient
pressure (1 bar) must be added.
The entry is carried out as follows: 0..8 bar.
