ECKELMANN UA 300 D User manual

eckelmann.de
VORSTAND: DR.-ING. GERD ECKELMANN, VORSITZENDER − DR.−ING. PETER CORDES, DR.-ING. FRANK-THOMAS MELLERT
VORSITZENDER DES AUFSICHTSRATES: HUBERTUS G. KROSSA AMTSGERICHT WIESBADEN HRB 12636
UA 300 D Case Controller (Discounter controller) V1.18

Table of contents
i
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
1 System Design of UA 300 D 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Application of UA 300 D 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Versions 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1 Controller types 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.2 Version update 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Function of UA 300 D 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Selecting sensor type 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 Required and optional sensors 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Controller function 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1 Cooling (solenoid valve) 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2 Compressor control 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.1 Control by temperature according to majority (UA 111 X only) 8. . . . . . . . . . . . . . . . . . . .
3.2.2.2 Antifreeze protection 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.3 Control by pressure switch with neutral zone (UA 111 XP only) 8. . . . . . . . . . . . . . . . . . .
3.2.2.4 Disabling compressors 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.5 Limiting compressor starts 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.6 Compressor load/unload delay 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.7 Forced actuation (bypass interval) 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.8 On−off control by all supply air sensors 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.9 On−off control by room air sensor 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.10 Continuous running monitoring 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2.11 Two temperature zones 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.3 Defrosting 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.4 Fan control with case controllers 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.5 Fan control with coldroom controllers 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.6 Door contact 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.7 Temperature reading offset 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.8 Setpoint toggle (day/night operation) 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.9 Lighting control 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.10 Archiving operating data 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.10.1 Temperature recording 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.11 Temperature recording to EU Regulation 37/2005 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.12 Clock 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Installation and Startup of UA 300 D 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Connection and safety notes 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Installation 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.1 UA 300 D xC DIN rail mounting 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.2 UA 300 D xS control panel mounting 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of contents
ii Version 2.03 27. Juni 2008
4.3 Basic parameter settings 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.1 Setting the CAN bus address 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.2 Setting the controller type 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.3 First start – Loading basic settings 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.4 Setting basic parameters 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Maintenance and battery replacement 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.1 Replacing battery on UA 300 D xC 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.2 Replacing battery on UA 300 D xS 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Pin and Terminal Assignments of UA 300 D 35. . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 UA 300 D xC as case controller 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 UA 300 D xC as coldroom controller 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 UA 300 D xS as case controller 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 UA 300 D xS as coldroom controller 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Operation of UA 300 D 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Operation with CI 3000 Store Computer / AL 300 Operator Terminal 41. . . . . . . .
6.2 Menus and screens 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2.1 Remote operation/parameter setting of case/coldroom controller 45. . . . . . . . . . . . . . . . . .
6.3 Entering refrigeration point parameters 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4 Operation with BT 300 x Operator Interface 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4.1 Defining the refrigeration point 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4.2 Defining the controller 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Menu structure UA 300 D 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Controller type UA 111 X − Menu tree 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.1 Menu 0 Main menu 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.2 Menu 1 Actual Values 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.3 Menu 2 Setpoints 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4 Menu 3 Clock 58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.5 Menu 4 Messages 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.6 Menu 5 Archive 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.7 Menu 6 Configuration 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of contents
iii
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
7.2 Controller type UA 111 XP − Menu tree 64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.1 Menu 0 Main menu 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.2 Menu 1 Actual Values 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.3 Menu 2 Setpoints 68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.4 Menu 3 Clock 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.5 Menu 4 Messages 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.6 Menu 5 Archive 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.7 Menu 6 Configuration 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 Controller type UR 141 − Menu tree 79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.1 Menu 0 Main menu 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.2 Menu 1 Actual Values 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.3 Menu 2 Setpoints 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.4 Menu 3 Clock 88. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.5 Menu 4 Messages 90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.6 Menu 5 Archive 90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.7 Menu 6 Configuration 91. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Alarms and Messages of UA 300 D 95. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1 Alarms 96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Messages 97. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.3 Transient alarms and messages 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.4 Message log 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Specifications of UA 300 D 99. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1 Electrical data 99. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Mechanical data 100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.1 DIN rail mounting of UA 300 D xC 100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.2 Panelmounting of UA 300 D xS 101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of contents
iv Version 2.03 27. Juni 2008
Notice:

System Design of UA 300 D
1
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
1 System Design of UA 300 D
The UA 300 D Case Controller is a component of the new LDS System. It is based on the hardware of the
UA300 Case Controller and has been designed for application in discount stores. The controller is a package unit
without optional expansion modules. A BT 300 x Operator Interface can be connected to the controller when re-
quired. Electrical connections are described in Section Pin and Terminal Assignments of UA 300 D.
TTY
CAN Bus
CI 320
E•LDS
new
ZNR. 51203 69 030 E2
Digital outputs:
4 x normal open contact
3 x two-way-contacts
2x24VDC/50mA
3 x digital inputs
230 V AC
10 x analog inputs:
2-wire-NTC-
temperaturs sensors
UA 300 D CC
UA 300 D CS
1..99UA300Dxy
Case Controllers
CAN Bus address: 1..99
(0..1)
BT 300
ESC
RESET
Digital outputs:
4 x normal open contact
3 x two-way-contacts
2x24VDC/50mA
(0..1)
BT 300
ESC
RESET
3 x digital inputs
230 V AC
10 x analog inputs:
2-wire-NTC-
temperaturs sensors
1 x switch for
possible external circuit
CAN Bus
UA 300 D x - DIN rail mountingCUA 300 D x - panel mountingS
TTY
CI 320
CI 3000 / AL 300
MODEESC
PRIO 1
PRIO 2
,
9
WXYZ
7
PQRS
8
TUV
6
MNO
4
GHI
5
JKL
3
DEF
2
ABC
1
0
ALARM
RESET
Interfaces:
CAN bus: Communication within the LDS System, UA 300 D Cx/Ax only
Display: Connection for BT 300 x Operator Interface
TTY: Communication with LDSWin PC software
Digital inputs/outputs:
3 x digital inputs 230 V, floating
7 x relay outputs 230 V / 6 A / (4 N.O., 3 changeover)
2 x transistor outputs 24 V DC / 50 mA
1 x universal switching contact to control external devices (UA 300 D xS only)
Analog inputs:
10 x analog inputs Connection for two−wire NTC temperature sensors
Real−time clock: Battery−backed (lithium cell), UA 300 D Tx/ Ax only (stand−alone operation)

System Design of UA 300 D
2Version 2.03 27. Juni 2008
Notice:

Application of UA 300 D
3
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
2 Application of UA 300 D
2.1 Versions
The UA 300 D Case Controller is produced in different versions varying for networked or stand−alone operation
and mounting location:
- UA 300 D CC
- UA 300 D CS
- UA 300 D TC
- UA 300 D TS
- UA 300 D AC
- UA 300 D AS
For control of chiller and freezer coldrooms the UA 300 D CS/TS/AS is designed to install in a casing in the con-
trol panel or in the UA 300 D CC/TC cap rail casing on the mounting plate. A digital output (24 V DC / 50 mA) is
provided on the controller to connect an external signalling device.
Integration in CAN bus
Type UA 300 D CC / CS / AC / AS controllers are designed to integrated in the CAN bus of the new LDS Sy-
stem. The suffix CC stands for "CAN in Cabinet/DIN rail mounting" (CAN bus connection, controller installs in
display case, cap rail mounting). The suffix CS stands for "CAN in Switchbox" (CAN bus connection, controller
installs in system control panel).
The UA 300 D does not allow of disabling CAN refrigeration points by the compressor pack con-
troller.
Stand−alone operation
Type UA 300 D TC / TS / AC / AS controllers are designed for stand−alone operation independent of the LDS
System, meaning that the case or coldroom controller works on its own and is not connected to the CAN bus.
The suffix TC stands for "Timer in Cabinet/DIN rail mounting" (internal real−time clock, controller installs in dis-
play case, cap rail mounting). The suffix TS stands for "Timer in Switchbox" (internal real−time clock, controller
installs in control panel).
Type UA 300 D TC / TS / AC / AS controllers have an internal battery−backed real−time clock and internal data
recording memory. The clock continues running in any electric power failure.
All−in−one
The controllers UA 300 D AC/ AS have been developed for integration in the CAN bus and for stand−alone ope-
ration. The suffix AC stands for All in Cabinet/DIN rail mounting (controller installs in display case, cap rail moun-
ting), the suffix AS stands for All in Switchbox (controller installs in system control panel).

Application of UA 300 D
4Version 2.03 27. Juni 2008
2.1.1 Controller types
The following three controller types are combined in the UA 300 D Case Controller:
Controller type Application
Case controller UA 111 X Corresponds largely to the existing UA 111 D (UA 300) controller for multitasks without defrost
heater, but has a second zone for roll−in display cabinets and different temperature sensor
grouping (8 for supply air, 2 for return air).
UA 111 XP Corresponds largely to the UA 111 (UA 300) controller for multidecks without defrost heater,
but has a different temperature sensor grouping (8 for supply air, 2 for return air) and the capa-
bility of controlling a refrigeration pack equipped with up to 3 compressors as a function of
pressure.
Coldroom controller UR 141 Corresponds largely to the UR 141 TK and UR 141 NK (UA 300) controllers for coldrooms, but
has one zone 1 for low−temperature refrigeration and one zone 2 for normal−temperature coo-
ling.
The controller type is selected by DIP switch S3 located in the middle of the circuit board (UA 300 D xC) or on
the rear of the controller (UA 300 D xS) − See Section 4.3.2 Setting Controller Type and Master/Slave Mode.
Selection of the controller type defines the controller properties and default controller settings. The UA 300 D
Case Controller can be operated by:
SHost computer via modem connected to CI 3000 Store Computer.
SAL 300 Operator Terminal.
SCI 3000 Store Computer.
SLocal BT 300 x Operator Interface connected to the controller.
2.1.2 Version update
Replacement of the EPROM may only be carried out by trained personnel or at the manufacturer’s
works. Improper EPROM replacement can result in damage to the controller and impairment of con-
troller functions.
As a rule, all setpoints previously defined will be retained when updating the controller version (inserting a new
EPROM).
Exception: This does not apply when updating from Version V1.16 or earlier to Version V1.17 or later.
In this instance all previously defined setpoints will be replaced automatically by the basic settings of the new
version when updating (inserting a new EPROM).
The previously defined setpoints can be preserved by first saving them to the LDSWin PC software
via CAN bus. After inserting the new EPROM, the saved data can then be downloaded to the con-
troller (See Section LDSWin for further details).

Function of UA 300 D
5
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
3 Function of UA 300 D
Parameters mentioned in this section are described in the Menu Structure section. It will normally not
be necessary to change the default settings of these parameters. Parameters that do not allow chan-
ging are termed fixed parameters below.
3.1 Selecting sensor type
The UA 300 D case controller used temperature sensors to perform control. All sensors connected must be the
same type and parameters are not set separately for the sensors. The type of sensor used can be defined by
the Sensor Type parameter (Menu 6−2−5). The following sensor types are usable:
L243 (K243) Temperature range −50 .. 50°C
Type K243 sensor can be used in place of type L243.
Characteristics of these two sensors are identical.
K277 Temperature range −50 .. 50°C
5K3A1 Temperature range 0 .. 100°C
All leads running to and from the UA 300 D − especially those of the CAN bus − must be shielded! No
shielding is required on sensor leads when installed exclusively inside the refrigerated display case
and when external interference (for example from parallel power wires) is not to be expected.
3.1.1 Required and optional sensors
Temperature sensors used with the UA 300 D may be either required or optional depending on the set controller
type and operating mode. If required sensors are not connected, alarm is always generated in a sensor break.
With optional sensors, alarm is only generated when the sensors are included in sensor scan. Sensor scan
takes place automatically on first start of the controller. The number of sensors canned can be checked in Menu
(6−1) or with the LDSWin software. Required and optional sensors are listed below:
Single−zone operation
Controller type Required sensors Optional sensors
UA 111 X
UA 111 XP
R2.1 R2.2 R2.3 R2.4 R2.5 R2.6 R2.7 R2.8 R4.1
UR 141 R1.1 R4.1 R1.2 R1.3 R1.4 R4.2 R4.3 R4.4

Function of UA 300 D
6Version 2.03 27. Juni 2008
Two−zone operation
Controller type Required sensors Optional sensors
UA 111 X
UA 111 XP
R2.1 R2.8 R2.2 R2.3 R2.4 R2.5 R2.6 R2.7 R4.1 R4.8
UR 141 R1.1 R1.3 R4.1 R4.3 R1.2 R1.3 R1.4 R4.2 R4.4
Sensor identification
Legend: Rx.y
x = Sensor type 1Defrost sensor (evaporator sensor)
2Supply air sensor
4Return air sensor / room air sensor
y = Case part 1..8 Case part 1..8
ZNR. 51203 72 930 DEF
R4.y R1.y R2.y
Sensor break alarm
If required sensors are not connected, alarm is always generated in a sensor break. With optional sensors,
alarm is only generated when the sensors are included in sensor scan. Sensor scan can be initiated from a
menu (see Section Menu Structure).
The CI 3000 Store Computer does not archive actual temperature values for optional sensors that are not inclu-
ded in sensor scan.
3.2 Controller function
The sections following describe the various functions of the UA 300 D for control of refrigeration points. Availabi-
lity of certain controller functions depends on the controller type set on DIP switch S3 (see Section 4.3.2 Setting
Controller Type).
The separate controller types are summarized below:
UA 111 X UA 111 XP UR 141
Refrigeration Zone 1 Switches with compressor Majority of supply air sensors
Zone 1
On−off control by room air
sensors Zone 1
Compressor Zone 1 /
Compressor Zone 2
Majority of supply air sensors
Zone 1
Neutral zone pressure switch
(digital inputs)
−−−
Refrigeration Zone 2 On−off control by supply/return
air sensors Zone 2
On−off control by supply/
return air sensors Zone 2
On−off control by room air
sensors Zone 2

Function of UA 300 D
7
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
3.2.1 Cooling (solenoid valve)
Twin control by majority (UA 111 X Zone 1 only)
With the UA 111 X controller, the compressors are controlled as a function of the supply air sensors for the first
temperature zone (see description below, Section 3.2.2.1). The cooling relay energizes as a function of the com-
pressors whenever a minimum of one compressor is started.
Majority explained (varying with version):
Version 1.09 and lower Above Version 1.09
Even number of supply air sensors 1): Half supply air sensors + 1 2): Half supply air sensors
Odd number of supply air sensors 3): Half supply air sensors rounded up
Example:
1): Total 6 supply air sensors: 4 or more sensors = Majority
2): Total 6 supply air sensors: 3 or more sensors = Majority
3): Total 5 supply air sensors: 3 or more sensors = Majority
On−off control by all connected supply air sensors (UA 111 XP Zone 1 only)
Control is made by all supply air sensors of the first zone. The cooling relay de−energizes when temperature re-
aches the setpoint (switch−off value) on all connected supply air sensors or the setpoint for antifreeze protection
on one supply air sensor. The cooling relay re−energizes when temperature has passed the switching differential
on the majority of the connected supply air sensors (e.g. 3 out of 5).
On−off control (UA 111 X Zone 2, UA 111 XP Zone 2 and UR 141 only)
Control is made by one temperature sensor (supply air for UA 111, room air for UR 141). The cooling relay de−
energizes when temperature reaches the setpoint (switch−off value) on the respective temperature sensor. The
cooling relay re−energizes with the set hysteresis.
Cooling relay operation
Operation of the cooling relay takes place according to the cooling safety requirements and is governed by the
controller type selected:
UA 111 X, UA 111 XP, UR 141 Zone 2 (NT): N.O. control, i.e. cooling is OFF when case controller is
de−energized.
UR 141 Zone 1 (LT): N.C. control, i.e. cooling is ON when case controller is de−energized.

Function of UA 300 D
8Version 2.03 27. Juni 2008
3.2.2 Compressor control
3.2.2.1 Control by temperature according to majority (UA 111 X only)
A maximum of two compressors are controlled by the base load/peak load principle. Control is made by case
temperature through all supply air sensors. The peak load compressor is stopped when temperature has re-
ached the setpoint (switch−off value) on the majority of the connected supply air sensors (e.g. 3 out of 5).
The base load compressor is stopped when temperature reaches the setpoint on the last supply air sensor. It is
started again when temperature has passed the switching differential on the majority of the supply air sensors.
ON delay always expires consecutively for Compressors 1 and 2, meaning that they will never start simulta-
neously even when two compressors are demanded at once by all sensors.
OFF delay may expire concurrently (when all sensors turn cold at once), meaning that both compressors may
stop.
The peak load compressor is restarted when temperature has passed the switching differential on all supply air
sensors. Base load rotation is provided to avoid varying run times of the base and peak load compressors.
Base load rotation takes place not later than after 3 hours of operation or when the following control operations
occur.
(P = 0 / B = 0) ³(P = 0 / B = 1) or
(P = 1 / B = 1) ³(P = 0 / B = 1)
P = peak load compressor / B = base load compressor / Transition from one control state to the next.
Both compressors are stopped immediately if the set antifreeze protection temperature is reached. They are
both restarted after an adjustable time delay has elapsed.
3.2.2.2 Antifreeze protection
The supply air sensor on which temperature is the coldest causes cooling to be stopped if temperature drops
below the set antifreeze protection level. This prevents freeze−up and damage to merchandise in individual dis-
play cases controlled at very cold temperature to accommodate special requirements of placement or the like.
3.2.2.3 Control by pressure switch with neutral zone (UA 111 XP only)
Control is made as a function of pressure by a pressure switch with neutral zone connected to two digital inputs.
This pressure switch is installed in the refrigerant line and compares pressure in the refrigerant line with a refe-
rence pressure.
If the pressure is lower or higher, the pressure switch actuates a 230V digital input at the refrigeration point.
When a 230 V signal is applied to the compressor loading input, one additional compressor is started after an
adjustable load time. When a 230 V signal is applied to the compressor unloading input, one additional com-
pressor is stopped after an adjustable unload time. A maximum of three compressors can be controlled. They
can be enabled separately. A maximum number of compressor starts per hour can be defined.
Base load rotation takes place every time a compressor is loaded or unloaded, not later than after 2 hours. Both
compressors are stopped immediately if the set antifreeze protection temperature is reached. They are both re-
started after an adjustable time delay has elapsed.
Forced actuation can also be set in minutes. This means that a compressor will be actuated if none has been
demanded by the pressure switch within the set interval. The time is started as soon as a cooling relay is energi-
zed. If forced actuation is active, the pressure switch will not be interrogated again until an adjustable bypass
interval has expired.
This allows the system to build up pressure with the forced−control compressor and, in the least favorable in-
stance, to move the pressure switch out of the unload position.

Function of UA 300 D
9
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
3.2.2.4 Disabling compressors
Controller type: UA 111 X and UA 111 XP only
The compressors not required must be tagged as disabled in the corresponding menu. In the same manner, the
compressors used must be tagged as enabled.
3.2.2.5 Limiting compressor starts
Controller type: UA 111 XP only
As a means of protecting the compressors from motor damage, the maximum allowed number of compressor
starts per hour can be defined jointly for all compressors.
3.2.2.6 Compressor load/unload delay
Controller type: UA 111 X and UA 111 XP
A load delay can be defined for each compressor, requiring the set time to expire after exceeding the tempera-
ture setpoint before the compressor is started. In the same manner, an unload delay can be defined for stopping
the compressor.
3.2.2.7 Forced actuation (bypass interval)
Controller type: UA 111 XP
In certain operating states it may happen that the pressure switch does not demand any additional compressor
over an extended period although the refrigeration point requires additional refrigeration output. Accordingly, a
time interval can be defined in minutes for forced actuation, after which the controller will load a compressor re-
gardless of none being demanded by the pressure switch.
This interval is reset every time a cooling relay is energized. Actuation takes place for the duration of the bypass
interval set in seconds. After that time, control of the compressors is restored to the pressure switch.

Function of UA 300 D
10 Version 2.03 27. Juni 2008
3.2.2.8 On−off control by all supply air sensors
Controller type: UA 111 X, UA 111 XP
Control takes place through all connected first−zone supply air temperature sensors.
Single−zone operation: In single−zone operation, Cooling Relay 1 and the compressor outputs are actuated.
Valve 1
Return
air
R4.1
R2.1
Supply
air
Verdampfer 1Evaporator 1
ZNR. 51203 72 230 E1
R2.2 R2.8
(optionally)
Compressor 1
Compressor 2
Compressor 3
only UA 111 XP /
optionally
Refrigeration point
controller
UA 300 D
R2.1 .. R2.8: Supply air sensor (Terminal Z11/12; Terminal Z31/32 .. Terminal Z91/92)
R4.1: Return air sensor (Terminal Z21/22)
Valve 1: Solenoid Valve 1 relay (Terminal 25/26/28)
Compressor 1 relay (Terminal 43/44)
Compressor 2 relay (Terminal 53/54)
Compressor 3 relay (Terminal 63/64 − UA 111 XP ONLY)
When connecting the supply air sensors, make sure there are no free locations between the connec-
ted sensors. For example, when connecting four supply air sensors, the consecutive inputs R2.1 to
R2.4 must be used.

Function of UA 300 D
11
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
Two−zone operation:
Valve 1
Return
air
R4.1
R2.1
Return
air
Valve 2
R4.8
R2.8
Supply
air
Supply
air
Verdampfer 1 Evaporator 1
Verdampfer 2
Evaporator 8
Refrigeration point
controller
UA 300 D
ZNR. 51203 72 130 E1
R2.2 R2.7
(optionally)
Compressor 1
Compressor 2
Compressor 3
only UA 111 XP /
optionally
R2.1 .. R2.7: Supply air sensor (Terminal Z11/12; Terminal Z31/32 .. Terminal Z81/82)
R4.1: Return air sensor (Terminal Z21/22)
R2.8: Supply air sensor (Terminal Z91/92)
R4.8: Return air sensor (Terminal Z01/02)
Valve 1: Solenoid Valve 1 relay (Terminal 25/26/28)
Valve 2: Solenoid Valve 2 relay (Terminal 35/36/38)
Compressor 1 relay (Terminal 43/44)
Compressor 2 relay (Terminal 53/54)
Compressor 3 relay (Terminal 63/64 − UA 111 XP ONLY)
When connecting the supply air sensors, make sure there are no free locations between the connec-
ted sensors. For example, when connecting four supply air sensors, the consecutive inputs R2.1 to
R2.4 must be used.

Function of UA 300 D
12 Version 2.03 27. Juni 2008
3.2.2.9 On−off control by room air sensor
Controller type: UR 141
Plain on−off control: Cooling is controlled by the coldroom air temperature sensor. The cooling relay is de−energi-
zed when temperature reaches the setpoint (switch−off value) on the room air sensor and is restarted with adju-
stable hysteresis.
Single−zone operation (LT rooms):
Valve 1
Room
air
R4.1
Supply
air
Verdampfer 1
Evaporator 1
UA 300 D
ZNR. 51203 72 430 E0
Refrigeration point
controller
R4.1: Room air sensor (Terminal Z21/22)
Ventil 1: Solenoid Valve 1 relay (Terminal 25/26/28)
Two−zone operation (Zone 1: LT rooms / Zone 2: NT rooms):
Valve 1
Room
air
R4.1
Room
air
Valve 2
R4.3
Supply
air
Supply
air
Verdampfer 1
Evaporator 1
Verdampfer 2
Evaporator 2
UA 300 D
ZNR. 51203 72 330 E1
Refrigeration point
controller
R4.1: Room air sensor (Terminal Z21/22)
R4.3: Room air sensor (Terminal Z71/72)
Valve 1: Solenoid Valve 1 relay (Terminal 25/26/28)
Valve 2: Solenoid Valve 2 relay (Terminal 35/36/38)

Function of UA 300 D
13
E2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON [phone] | FAX [phone] | eckelmann.de
Version 2.03 27. Juni 2008
In the interests of compatibility with UA 300 coldroom controllers, it must be remembered that the
UR 141 does not have a heating circuit/counter circuit.
3.2.2.10 Continuous running monitoring
Controller type: UA 111 X and UA 111 XP
Continuous running of refrigerated cases, e.g. in aggravated ambient conditions, has negative effects especially
with multidecks. It results in icing of the evaporator and reduced air curtain cooling. Run time limiting provides
for automatic forced shutdown of cooling as a means of preventing icing. As a result, the duration of cooling at
any one time is limited.
Duration of forced shutdown is adjustable. Commencement of forced shutdown is predefined. When necessary,
forced shutdown always takes place 1.5 hours after commencement of defrosting and after each additional hour.
The following condition also applies:
If both compressors have been shut down, continuous run monitoring is deactivated in this zone for one cycle
(1.5 or 1 h).
When forced shutdown is active, it will be terminated before the set duration elapses if temperature
rises 4K on supply air sensor.
3.2.2.11 Two temperature zones
Controller type: UA 111 X and UA 111 XP
The controller allows of controlling one refrigerated display case in single−zone operation (maximum eight add−
on cases/supply air sensors) or two refrigerated display cases with two temperature zones and maximum seven
add−on cases/supply air sensors in the first zone and one case in the second zone.
Controller type: UR 141
With coldrooms, a LT coldroom is always controlled with the first zone and a NT coldroom is always controlled
with the second zone.
CAN disabling of refrigeration points by the compressor pack controller is not available on the
UA 300 D.

Function of UA 300 D
14 Version 2.03 27. Juni 2008
3.2.3 Defrosting
Controller type: UA 111 and UA 111 XP
These two controller types do not have a defrost heater. Off−cycle defrosting is controlled by the supply air sen-
sors.
Controller type: UR 141
Defrosting frees the evaporator of ice forming from normal operation. Defrosting takes place either by heating
the evaporator (electric heating element) or off−cycling the compressor. During defrosting, temperature control of
the refrigeration point is inactivated.
Defrosting has a different effect in single−zone or two−zone operation. In single−zone operation, sensors R1.1
and optionally R1.2 (only when connected) act on Defrost Relay 1.
Verdampfer 1 Evaporator 1
Valve1
Return
air
R1.1 R1.2 (optionally)
Supply
air
Defrost
heater 1
UA 300 D
ZNR. 51203 72 630 E0
Refrigeration point
controller
R1.1: Defrost sensor (Terminal Z31/Z32)
R1.2: Optional defrost sensor (Terminal Z51/Z52)
Valve 1: Solenoid Valve 1 relay (Terminal 25/26/28)
Defrost heater 1: Defrost relay 1 (Terminal 43/44)
On the UR 141, parameters cannot be set for a second defrost stage or heating circuit control.