ECKELMANN Case Controller UA 4 E Series, Operating Instruction

Page: 33 / 466

Firmware V3.13 21.04.2021 33/466
5.5.1 Necessary and optional sensors
Depending on the controller type and the operating mode, there are necessary and optional sensors for the
case controller. A sensor scan is performed automatically during the
first start of the controller. The number of
scanned sensors can be checked in the menu (6-1) or with the LDSWin PC software. This allows unconnected
sensors to be removed from the monitoring for sensor fault.
The following lists show required and optional sensors in the complete design:
Controller type Sensors necessary for regulation Optional sensors - extended functionality
(if terminal available;
see chapter
Versions )
Single-zone operation
UA 121 E
UA 131 E / UA 131 E LS
UA 141E Zone 1: R1.1, R2.1, R4.1, R6.1 Zone 1: R5.1
R1.2, R2.2, R4.2, R5.2, R6.2 (or R4.3, R4.4)
UR 141 NE
UR 141 TE Zone 1: R1.1, R4.1, R6.1 Zone 1: R2.1, R5.1
R1.2, R2.2, R4.2, R5.2, R6.2
UK 100 E **
KR 160 E ** Zone 1: R4.1, R6.1 Zone 1: R1.1, R5.1
R1.2, R4.2, R5.2, R6.2
Two-zone operation - only UA 400 E CC / UA 410 E AC
UA 121 E
UA 131 E / UA 131 E LS
UA 141E Zone 1: R1.1, R2.1, R4.1, R6.1
Zone 2: R1.2, R2.2, R4.2, R6.2
Zone 1: R5.1 (or R4.3)*
Zone 2: R5.2 (or R4.4)*
UR 141 NEUR 141 TE Zone 1: R1.1, R4.1, R6.1
Zone 2: R1.2, R4.2, R6.2
Zone 1: R2.1, R5.1
Zone 2: R2.2, R5.2
UK 100 E **
KR 160 E ** Zone 1: R4.1, R6.1
Zone 2: R4.2, R6.2
Zone 1: R1.1, R5.1
Zone 2: R1.2, R5.2
*only UA 131 E LS for operation with 4 return air sensors (R4.3 / R4.4 are activated)
** only UA 410 E AC
•
•
ATTENTION
Compressor damage! Danger due to liquid refrigerant on the suction side of the compressor!
Operating mode t
0
via CAN bus (menu 6-2-6)
The evaporator inlet sensors R5.1 and R5.2 should also be connected in the t
0
via CAN
bus operating mode. This results in improved emergency running characteristics in the event of
failure of the CAN bus transmission. In standalone operation (without local pressure transmitter),
the sensors, R5.1 and R5.2
must be connected; see chapter Standalone operation using
evaporator inlet sensors !
Operating mode t
0
local Z1 / Z2 (menu 6-2-6)
In the case of evaporators with high cooling capacity which require high control dynamics , the
superheat control should be realised via a local pressure transmitter (only UA 410 E AC); see
chapters
Standalone operation using activated local pressure transmitter and Emergency Op. .
Superheat control only via sensors R5.1 and R5.2 is not recommended, as there is a risk of
evaporator flooding due to the slow response behaviour!
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