ELREHA TAR 1810-2 User manual

ELEKTRONISCHE REGELUNGEN GMBH
Dear Customer
The Cold Storage Controllers of the TAR x810 series are advanced now and got the add-on -2 in their name
to distinguish them from older types.
Please consider the changed functions and the added new functions.
The single differences:
• Changed terminal assignment. Be careful while replacing older types!
• Error messages now shown as codes and displayed as listing at P52.
• Unlock/Acess code entry now possible at each parameter.
• 3 new parameters added.
- "Display Hold"-function
- Emergency mode while sensor failures
- Current failure + listing
- Access code parameter is now P53
Don't hesitate to contact us if you have any questions.
Your ELREHA GmbH
Cold Storage
Controller
TAR x810 ->> x810-2

Please read these instructions carefully before applying power. Your attention is drawn to the fact
that the warranty is subject to the application of power sources that are within the limits specied
in this manual. This documentation was compiled with utmost care, however, we cannot guarantee
for its correctnesss in every respect. Technical details can be changed without notice, especially the
software. Please note that the described functions are only valid for units containing the software
with the version-number shown on page 1. Units with an other software number can work a little bit
different. You will nd this software number on the label of the unit too.
ELREHA Gmbh
D-68766 Hockenheim, Schwetzinger Str. 103
Telefon 0 62 05 / 2009-0 - Fax 0 62 05 / 2009-39 - [email protected]
Please note Safety Instructions !
While replacing older types please note
changed functions!
Technical Manual 5311009-50/26E
Software Vers. from Software Vers. 1.9x
Cold Storage Controller
Type
TAR 1810-2
TAR 3810-2
TAR 5810-2
ELEKTRONISCHE REGELUNGEN GMBH
Operating Elements
Brief Description
• Cold Storage Controller with
4 relays for Solenoid Valve,
Defrost Heater, Alarm Device
and Fan
• Digital Input for door-contact
• Defrost Mode selectable,
Manual Defrost
• Defrost Termination by time /
temperature
• Fan Control by time / temperature
• Over-/Undertemperature Alarm
• Alarm Buzzer and Alarm Relay
Applications
• Cold rooms, refrigeration units,
refrigerated shelfs, etc. with
• One evaporator
• Evaporator fan
• Defrost heater,
Free-Air Defrost,
Hot Gas Defrost
Parameters
All selectable parameters hold a parameter number (e.g. P03), you will nd
a listing on the next page.
Calling up and editing
Press key 'P' ...................parameter number appears
Use '/' .......................select desired parameter (hold key for autoscroll)
Press "P" again...............parameter value appears
Use keys '/'................adjust parameter value (hold key for autoscroll)
Press 'P' again................value is stored, back to parameter no.
Unlock Keys / Access code
To prevent un-authorized persons from editing parameter values, there is a
lockingfunctionwhichallowsonly themost importantparameterstobechanged
at any time. All other parameters must be unlocked as follows:
- enter access code before programming at parameter P53
- directly at the parameter to be changed. If a code no. is necessary the
display shows "C00". Set the matching code no. by the "/"-keys (70 or
80, see parameter listing) and conrm by "P".
If no key is hit for about four minutes, the access code is cancelled and the
editing function is locked automatically.
Manual Defrost
While the actual value is visible:
- Press key "" for more than 2 seconds = Defrost ON
- Press key "" for more than 2 seconds = Defrost OFF.
Start-up behavior
Directly after start-up the display shows "810" (controller type), after that a
display test passes.
How to nd out the controller type
- Press key "P" for > 2 sec. = Display shows controller type (810)
- Key "" additionally = Software version is displayed
Manual controller "wake-up"
If the controller is switched off via interface (e.g. from a PC), the display shows
"oFF". By holding key "" for > 3 sec. the controller unit engage.
Reset parameters to factory settings
Switch OFF supply voltage, press and hold "P"-key, switch supply voltage
ON again. Code request "C" appears. Enter "88", conrm by "P". One by
one software version, date and "def" appear. With this, all values are reset to
factory settings.
Changes of the -2 types in comparison to the older ones
- Different terminal assignment
- Error messages now as codes + error listing
- Unlock code entry now possible at each parameter
- Storage of the last actual value while defrost
- Emergency operation while sensor failures
- 3 new parameters, new codeparameter is (P53)
Technical Data (see parameter listing for more information)
Supply Voltage.................................................................................. see above
Power Consumption.......................................................................max. 5,5 VA
TAR 1810-2 at 12V / max. supply voltage..........appr. 2,7 VA / 5,5 VA
Output Relays.......................................................................... 4x potential free
Contact Rating ................................................... 8A cos phi = 1, 1/4 HP / 250V
Operating-/Storage Temp............ -10..+55°C (14..131°F)/-30..+70°C (-22..158°F)
Relative Humidity.............................................max. 80% r.H., not condensing
Temperature Sensors................................. TF 201 (PTC) or TF 501 (Pt1000)
Display ...............................LED,7-segment,red,character height 13mm (.51)
Resolution / Accuracy...................................................0,1°C / 0,2°F / typ. ±1K
Control-/Display Range
with TF 201 ................................................ -55...+105°C / -67...221°F
with TF 5xx (depending on type) up to.. -110...+120°C / -166...248°F
Data storage parameters ....................................................................unlimited
Clock backup ....................................................typ. 10 days after mains is lost
Relay indicators .................................................................................3 mm, red
Digital input (DI) ................................................230V, max. 3mA, optocoupler
TAR 1810-2: external, potential free N/O contact
Interface ...................................................................................E-Link (RS-485)
Electrical connection..............................................screw terminals 2,5mm (.1)
Housing / Protection
TAR 1810-2..........................77x 35 mm front frame, IP 54 from front
TAR 3810-2..................................................... for rail mounting, IP 30
TAR 5810-2...........................................96 x 48 mm, IP 54 from front
Accessories (please order separately)
- Temperature sensors TF 201 or TF 501
- Transformer 107-1300-0052 (230V/12V/5VA)
All TAR types are
marked similarly
TAR 1810-2
panel mounting
12-24V AC, 18-33V DC
TAR 3810-2
rail mounting
230V AC, 50-60 Hz
TAR 5810-2
panel mounting
230V AC, 50-60 Hz
Blinking:
Night Setpoint
TAR
Increase
Values
Decrease
Values
Cooling
ON/OFF
1/ 2/
Defrost
ON/OFF
Program-
ming /
Selection
P
Blinking:
Data Transmission
ELREHA
Alarm
4/3/
Fan
ON/OFF

Page 4 Technical Manual TAR x810-2 Cold Storage Controllers
If your controller has 44 parameters only, it is an old product,
produced up to the year 1998. A matching parameter listing
you can nd under "www.elreha.de / data sheets / T/x810alt-
If your controller has 50 parameters only, it is a unit without the
annex -2 in its name, which doesn't hold the functions described by
parameters P50-53. A matching parameter listing you can nd under
"www.elreha.de / data sheets / T/x810altversionen.pdf".
Failure handling
Sensor short circuit or broken
If one of the sensors is broken, disconnected or hot-wired, or the value is
located outside of the specied range, the display shows "- - -" at rst. After
1 minute the display ashes and shows an error code, internal buzzer and
alarm relay are activated, as selected with P30.
Error codes
E00 ................................... no failure
E01 ...............control sensor broken
E02 ...........control sensor hot-wired
E03 .... excess temp. control sensor
Emergency operation of temperature control
While a control sensor failure, the unit starts an emergency mode. The cooling
relay is clocking with a %-part (P51) of a 30 minutes interval, the fan relay is
de-activated. If switching mode 'freezing' is selected, the fan relay switches
on to prevent glaciation.
E04 .......... low temp. control sensor
E05 .................evap. sensor broken
E06 .............evap. sensor hot-wired
E09............failure at the digital input
E12......................door contact open
While an evaporator sensor failure, the tem-
perature controlfunctionsworknormally, but
no defrost function can be initiated.
With P51 = 0 or 100 you can preselect if,
while a failure, the relay is switched on or
off permanently.
Display shows "oFF" if:
1. ...controller unit is switched OFF via
digital input DI1 or via network.
2. ...you select P02 or P20 and the
evaporator sensor is switched off.
3. Code "70" has been entered
Para. Disp. Code Description Range Default (factory settings)
No. only
P01 .......X.......................Actual temperature control sensor (°C / °F)
P02 .......X.......................Actual temperature evaporator sensor (°C / °F)
P03 ..................no ..........Control setpoint .....................................................................Low limit P08...high limit P07......................0°C
P04 ..................88 ..........Control setpoint 2 (night setpoint).........................................Low limit P08...high limit P07......................0° C
P05 ..................88 ..........ON-time control setpoint 2 (e.g. 193=19:30)........................0...235, oFF ................................................. oFF
P06 ..................88 ..........OFF-time control setpoint 2 (e.g. 060=06:00)......................0...235, oFF .................................................oFF
P07 ..................88 ..........Highest adjustable control setpoint ......................................P08...+100 °C (-148...212 °F).....................+50 °C
P08 ..................88 ..........Lowest adjustable control setpoint .......................................-100°C / -148°F up to (P07)........................ -50°C
P09 ..................88 ..........Control differential (Hysteresis) of control setpoint ..............0,3...20,0 K resp. F......................................2 K
P10 ..................88 ..........Switching mode of cooling relay K1......................................1= refrigeration, 2= freezing, 3= Heat.........1 (refrigeration)
P11 ..................88 ..........Refrigeration/Compressor Idle Time.....................................0...59 minutes..............................................2 minutes
P12 ..................88 ..........Fan stop/go temperature ......................................................-100°C... +100°C (Hyst. 3K xed)...............50°C
P13 ..................88 ..........Fan mode ..............................................................................1=, 2=, 3=, 4= see text 1
P14 ..................88 ..........Fan delay after defrost ..........................................................0...30 minutes..............................................3 minutes
P15 .......X.......................Minutes remaining until defrost termination
P16 .......X.......................Minutes remaining unitil refrig. restarts after defrost
P17 .......X.......................Minutes remaining until fan restarts
P18 .......X.......................Minutes remaining until alarm is activated
P19 ..................88 ..........Control sensor correction......................................................+/-10,0 K/F................................................... 0 K
P20 ..................88 ..........Evaporator sensor correction, switch off ..............................+/-10,0 K/F, oFF ..........................................0 K
P21 ..................70 .........Sensor type, physical dimensions ........................................1= TF 501 / °C / -110...+120°C ................... 2
2= TF 201 / °C / -55...+105°C
3= TF 501 / °F / -166...248°F
4= TF 201 / °F / -67...221°F
5= not used
P22 ..................88 ..........Defrost termination temperature...........................................0,0...30,0°C / 118,0°F..................................10°C
P23 ..................88 ..........Defrost method .....................................................................1= electric, 2= hot gas,
3= electric+AZV, 4= hot gas+AZV..............1
P24 ..................88 ..........Defrost time 1 000...235, oFF ..........................................(1.+.2 position = hours, ..............................oFF
P25 ..................88 ..........Defrost time 2 000...235, oFF ..........................................3rd position = minutes x 10)........................oFF
P26 ..................88 ..........Defrost time 3 000...235, oFF ................................................................................................................oFF
P27 ..................88 ..........Defrost time 4 000...235, oFF ................................................................................................................oFF
P28 ..................88 ..........Defrost (safety) time ..............................................................1...120 minutes............................................30 minutes
P29 ..................88 ..........Drain time (refrigeration delay after defrost).........................0...99 minutes.............................................. 0 minutes
P30 ..................88 ..........Alarm mode ...........................................................................0= Alarm relay active ON
1= Alarm relay active OFF ..........................1
2= like "0", but internal buzzer OFF
3= like "1", but internal buzzer OFF
4= Alarm relay sw. like internal buzzer
5= Rel.4 switches with contr. setpoint 2
alarm message by buzzer/LED
6= Alarm relay switched via DDC only
P31 ..................88 ..........Alarm delay............................................................................1...99 minutes, if sensor fails always .........5 minutes
automatically < 1 minute
P32 ..................88 ..........Alarm high limit temperature (relative to P03)......................0...100 K ......................................................100K
P33 ..................88 ..........Alarm low limit (absolute value) ............................................± 100 °C (-148...212 °F)..............................-100°C
P34 ..................88 ..........Digital input DI1 .....................................................................oFF = input de-activated ........oFF
1= door contact (fan OFF immediately,
refrig OFF after 3 min., alarm after P35)
2= alarm input
(alarm after P35)
3= control setpoint 2 ON (after P35,
priority higher than by time)
4= defrost ON (after delay P35)
5= controller OFF
P35 ..................88 ..........Digital input DI1 delay ...........................................................0...99 minutes..............................................2
P36 ..................88 ..........no function
bis
P40 ..................88 ..........no function
P41 ..................no ..........Date year
P42 ..................no ..........Date month
P43 ..................no ..........Date day
P44 ..................no ..........Time hours
P45 ..................no ..........Time hours
P46 ..................no ..........Time seconds
P47 ..................88 ..........Baudrate (data transfer speed via interface) .......................1= 1200, 2= 2400, 3= 4800, 4=9600 .........4
5= 19200, 6= 28800, 7= 57600
P48 ..................88 ..........Address of the unit in a network ...........................................1...78............................................................78
P49 ..................no ..........Manual defrost.......................................................................""= start defrost cycle, ""= terminate
P50 ..................88 .........."Display Hold" (DH) while defrost ........................................0 = on, 1 = off ..............................................0
P51 ..................88 ..........ON-time of the cooling relay while a sensor failure
(emergency operat.). Part depends on a 30 min.-interval....0...100% ......................................................50
P52 .................................Current failure + failure listing ...............................................Multiple failures: Scroll by arrow keys
P53 ..................no ..........Access code ..........................................................................0...99............................................................00
30 minutes
On-time cooling
relay in %
refrigeration Off
refrigeration On
On
Off

Technical Manual TAR x810-2 Cold Storage Controllers Page 5
Functional Description
Display & Sensors
The controller is able to work with temperature
sensors of the TF 201 or TF 501 (Pt1000) series,
set by P21.
Ranges:
P21 = 1 (TF 201).................... -50...+100°C
P21 = 3 (TF 501/Pt1000)....... -100...+300°C
Please note the specic temperature restric-
tions of the used sensors (e.g. -40...+80°C of
the standard-TF-types) and ask for matching
types if necessary.
Sensor 2 (evaporator sensor) can be disabled.
Temperature Control
Theactualtemperaturefromthecontrolsensor(P01)
is compared with the control setpoint (P03). Depen-
ding on the result, the cooling relay switches power
relaysofcompressors orsolenoidvalves.Aswitching
hysteresis (P09) prevents from short cycling, an idle
time (P11) prevents a compressor from switching
ON again immediately. In order to be fail-safe in case
of any internal power failure, there is a possibility of
selecting the correct switching mode (P10). In refri-
geration mode the N/O relay contacts are used so
that the load is shut off in case of failure. In freezing
mode the load is connected to the N/C contact, with
the load running constantly in case of failure.
Setpoint range
With parameters P07/P08 you can limit the setpoint
range.
Switching mode of relay K1
The switching characteristic of relay K1 (= cooling
mode) is dened by parameter P10 (as explained
above).
1= refrigeration
Load is switched by the N/O contact,
If actual value = P03+P09 : Relay K1 activated
2= freezing
Load is switched by the N/C contact,
If actual value = P03+P09 : Rel. K1 de-activated
3= Heating
If actual value = P03-P09 : Rel. K1 is now a
heating relay and will be activated
2. Setpoint / day-night-shift
To economize energy, e.g. at night, the unit is able
to work with a 2nd setpoint (P04). This setpoint can
be activated by the internal time-switch (P05/P06) or
the digital input DI1. The decimal point of the display
ashes while the 2nd setpoint is present.
Temperature alarm
Analarmrelay(K4)andabuilt-in buzzer areavailable
for warning purposes. If the temperature measured
by the control sensor exceeds the range set by
P32/P33, then the display ashes and a time delay
(P31) starts. After this timer is run down, the alarm
relay and the buzzer will be activated. P32 is relative
to setpoint P03, so P32 will be shifted the same
amount as the setpoint.
-- Any keypress resets the buzzer. --
If the temperature has left the range, P18 shows the
remaining time until an alarm occurs.
If the temperature comes back to the working range,
relay and buzzer will be reset automatically.
Alarm relay operation modes
With parameter P30 you select the mode of alarm
relay and internal buzzer:
0= Alarm relay active ON
1= Alarm relay active OFF
2= Alarm relay active ON, buzzer de-activated
3= Alarm relay active OFF, buzzer de-activated
4= Alarm relay works like the built-in buzzer, to
connect an external horn
5= Continuous ON of relay K4 if control setpoint 2
is being activated. Alarm messages will be
forwarded by buzzer/alarm-LED only. With this
function, light can be switched by time control.
6= Alarm relay can be switched via data interface
only. This works as well as the controller is de-
activated by interface or digital input. The swit-
ching command keeps stored, so the relay
position will be restored after a breakdown of
supply voltage.
Additionally, the alarm function can be started by
interrupting the digital input DI1 (see P34).
Real time clock
TheTAR ColdStorageController containsa realtime
clock which allows you to initiate four (8 with AZV)
defrost cycles a day. The timer has a power backup
for about 10 days in case of power failure.
The time of the day and the date can be set with
parameters P41...P45.
The defrost times are set with P24...P27 in 10 minute
increments in a 24 hour (military) format. Example:
13.20 = 01:20 p.m.
The second setpoint switch is made with P05/P06.
Because the display has only three digits, the time
value comes in the following format:
Switch times can be de-activated by setting to
'oFF'.
While the data recording function is active, time and
date cannot be adjusted.
To adjust the clock, rst de-activate data logger
(P39=0).
Defrost
One relay output is used to control a defrost de-
vice.
Defrost Initiation
A. by internal timer, four times available
(P24...P27)
B. by digital input DI1 (see chapter 'digital input').
In this case P35 will take effect as a 'defrost
OFF' time.
C. manually (P49).
The defrost device is always driven from the n/o
contact of relay K2. There is no need for external
interlocking the defrost output with the cooling output
since the temperature controller is disabled while a
defrost cycle. With P23 you can select four different
defrost modes.
Parameter P15 shows the remaining time of the
momentary defrost cycle until termination by time.
Defrost Modes
With P23 a defrost mode can be set, which works in-
dependent from the behaviour of the control relay.
1 = Heater or Free Air Defrost
If a defrost cycle starts, the defrost relay is
energized (= heater ON) and K1 terminates
cooling. (relay de-activated if P10=1, activated
if P10=2 )
2 = Hot Gas Defrost
If a defrost cycle starts, the defrost relay is
energized (bypass-valve open) and also K1
(solenoid valve open/relay activated if P10=1,
de-activated if P10=2 ).
3 = like 1, but with additional
defrost time doubling (AZV)
4 = like 2, but with additional
defrost time doubling (AZV)
Defrost time doubling (AZV)
This is a simple function to double the quantity of the
potential defrost cycles (4 --> 8). The unit generates
new defrost times automatically by adding 12 hours
to existing times.
Example:
If a defrost cycle is xed at 14:30, the unit starts
an additional cycle at 2:30 (am) without entering
this time.
3rd Position=
minutes x 10
1st and 2nd
Position=hours
Manual Defrost Initiation
A. At parameter P49 with key ""
B. While the display shows the actual
temperature by holding the "" key (> 2,5 sec.)
Defrost Termination
A defrost cycle can be terminated as follows :
A: Thermal termination.
Whenever the evaporator sensor temperature
(P02) exceeds the temperature limit set with
parameter P22, defrosting will be terminated.
If not necessary, switch off the evaporator
sensor at P20.
B: Termination by (safety) time.
The time set by parameter P28 is the
maximum time a defrost cycle can last before
it is terminated automatically.
C: Manual termination.
With parameter P49 you can terminate a
defrost cycle by pressing the "" key.
While the actual temperature (P01) is on the
display, a defrost cycle can be terminated by
holding the "" key (> 2,5 sec.)
D. If the defrost limit sensor fails, the defrost cycle
will be stopped immediately.
After the defrost cycle is terminated, the beginning of
the cooling function is delayed (P29). This prevents
freezing water drops on the evaporators surface.
P16 shows the remaining time until cooling starts
again.
(DH) Display Hold Function
This function allows to hold the last measured actual
temperature value on the display during a defrost
cycle. After the defrost cycle has been terminated,
the displayshows the current measuredvalue again.
The DH-function can be initiated by P50.
Evaporator Fan Control
Fourdifferentmodes offanoperationcanbeselected
with parameter P13.
A temporal fan-ON delay is active after a defrost
cycle (P14).
A thermostatic delay is always active. That means
the fan starts only if the temperature measured with
the evaporator sensor is 3K below the fan stop/go
temperature (P12). If this function is not desired, P12
can be set to its upper border to make it inefcient.
While the drain time (P29) the fan remains stop-
ped.
Fan Modes (P13)
1 = Fan runs if compressor output (K1) is on.
After defrosting the fan output is OFF until the
programmed Fan Delay Time (P14) is
complete. .
2 = Fan runs continously, except during defrost
and Fan Delay Time (P14) after defrost.
Thermostatic fan delay: The fan stops if the
temperature measured with the evaporator
sensor exceeds (P12). If this function is
not desired, P12 can be set to its upper border
to make it inefcient.
3 = Fan runs if the compressor output (K1) is on,
and during defrost.
The temporal fan delay must be set to "0".
This mode can be used for free air defrost.
4 = Fan runs permanently, except if unit is
switched off via interface.
(P17) informs about the remaining time until the fan
starts again.
Special case
If digital input DI1 is used for door monitoring, the fan
will stop immediately if the door opens.
Practical conditions
The fan is always switched by the n/o contact of
relay K3.
If you want to realize a thermostatic delay, select fan
mode 2and adjust setpoint P12.
If you want to realize a thermostatic delay and free
air defrost, please realize a parallel connection of fan
relay and defrost relay.

Page 6 Technical Manual TAR x810-2 Cold Storage Controllers
Digital Input
Digital input DI1 is normally connected to mains
voltage (not 1810-2). If this voltage is interrupted,
thefunctionsetwithP34 isinitiatedafteratimedelay
(P35), which is adjustable within 0...99 min, at '0' the
minimum delay is appr. 4 seconds.
P34=0 Digital input DI1 is de-activated
P34=1 Input DI1 works as a door-switch.
- The fan stops immediately,
- Refrigeration stops after 3 minutes,
- after P35 is run down an alarm will
be generated, alarm relay and
buzzer will be activated, refrigeration
switches ON again.
P34=2 Digital input DI1 works as alarm input.
After P35 is run down, alarm relay and
buzzer will be activated.
P34=3 Control Setpoint 2 (night-setpoint) is
active.
P34=4 External defrost by time switch or
similar. A defrost cycle will be started
and terminated by time or temperature.
After the cycle has been started, no
more cycle can be initiated while the
time set with P35.
P34=5 Controller unit oFF. All control
functions will be disabled, the display
shows "oFF". This allows to switch off
the unit without an alarm message in
the network. Relay 1-3 are de-
activated, the alarm relay remains in a
neutral position.
Networking of TAR-controllers
All TAR/TARP-x8xx controllers can be networked via
their built-in RS-485-interface. This network can be
controlled by a host unit.
This host can be a PC with a qualied software or a
SMZ-Frontend-System which allows remote control
of units and recording of all parameters.
Using the TAR 1810-2 this function
must be started by opening an exter-
nal, potential free switch connected
to terminals 11/12. Never connect mains
voltage to these terminals, danger of
destruction! This external contact must be
suitable for 5VDC/1mA.
• Because all units are connected parallel on the
data bus, every unit has its own network address
(P48) to ensure a specic communication.
• The communication speed is xed with P47,
(Default value 9600 Baud).
• Connection is done by commercial databus
cable.
• Shielding and ground connectors must be
connected to the nearest ground terminal.
• The unshielded part of the data cable must be as
short as possible.
Dimensions / Wiring TAR 1810-2
If networked controllers (18xx-2 types only) are supplied by
onetransformer onlyandthesinglepositionsmustbeswitched
off, use double-pole switches only.
If not, the unit will be supplied partially over the shielding of
thedata connectionandcontinues operationdependingon the
secondary voltage of the transformer. Please note: If a unit is
not supplied, the PC-software noties a unit breakdown with
complete justication !
Abetterwayisnottoswitch-offthesupplyvoltagebuttodisable
the unit by digital input (P34 = 5).
Never connect secondary coil of the
transformer to PE !
Danger of destruction with networking!
Front frame can be removed
Snap in xing
frame from
rear side.
RS
485
DO
NDO
RS
485
NDO
DO
N PE
DO NDO
N PE
PE
T
24V AC
DO NDO
T
N PE N PE
T T
DO NDO DO NDO
Attention if
supplied by
one transformer
only :
Switch-OFF
positions
with DPST-
contacts !
shielding
P
TAR ELREHA
76 (3.0)
1/ 2/ 3/ 4/
35 (1.38)
Rear view with xing frame
Rückansicht mit Befestigungsrahmen
75 (2.95)
91 2 3 4 5 76 8
202122 19 18 16172324
37 (1.46)
1110 12
1415 13
28 (1.1)
70 (2.76)
11
12
8
10
9
7
6
K3
3
5
4
K2
1
2
12
(.47)
Kühlstellenregler Cold Storage Controller
12-24VAC
18-33VDC
50/60Hz
max. 5,5VA
14
13
DI1
NDO
DO
15
16
K4
17
18
ELREHA
24
F2
22
23
K1
F1
56 (2.2) 3 (.12)

Technical Manual TAR x810-2 Cold Storage Controllers Page 7
Dimensions / Wiring TAR 3810-2
13
32
105 (4.13)
21 3 4 5 976 8 10 1211
25232220 21 24
TAR
2726 2928 3130
46 (1.81)
63 (2.48)
91 (3.58)
ELREHA
1614 15 17 18 19
P
3433 35 36 37 38
RS
485
NDO
cooling
(K1)
1
PE
N
32 4 65 87
N
TAR 3810-2
mains
NL L L
DI1
L
AC
2423
DO
0-10V OUT
DC
2625 27
limitation sensor (F2) control sensor (F1)
1613119 10 12 1514
defrost
(K2)
fan
(K3)
17 18 19
alarm
(K4)
3528 29 30 31 32 33 34 36 37 38
Panel housing dep. on DIN 43700/IEC 61554
Cut-out: 92 x 45 mm (b x h)
Tolerances max: +0,8 (b), +0,6 (h)
2/ 4/
ELREHA
1/ 3/
P
TAR
45 (1.77)
49 (1.93)
1
30
12131415
23
2425
4567891011
2627282930
1
1617181920212223
119 (4.69)
DI 1
92 (3.62)
22
7
29 30 3125 2623 24
13 15141210 118 9
K 4K 3K 2
DO
GND
NDO
3 4 5 62
L NPE
1
21
K 1
2017 18 19
F2
16
F1
97 (3.81)
Made in Germany
ELREHA
8
35(1.38)
59 (2.32)
26 (1.02)
39 (1.54)
For all described products there is a declaration of conformity which describes that, when operated in accordance with the technical manual, the
criteria have been met that are outlined in the guidelines of the council for alignment of statutory orders of the member states on EMC-Directive
(2004/108/EC) and the Low Voltage Directive (LVD 2006/95/EC). This declarations are valid for those products covered by the technical manual
which itself is part of the declaration. To meet the requirements, the currently valid versions of the relevant standards have been used.
This statement is made from the manufacturer / importer by:
ELREHA Elektronische Regelungen GmbH Werner Roemer, Technical Director
D-68766 Hockenheim
www.elreha.de Hockenheim.............11.06.2008.......................................................
(name / adress) city date sign
EG-Conformity
Dimensions / Wiring TAR 5810-2

Page 8 Technical Manual TAR x810-2 Cold Storage Controllers
Installation / Run-Up
Applications with Airow Defrost
If this defrost method is used, there is no need for mounting a
defrost sensor at the evaporator. In this case the sensor can
be disabled. If the correction parameter P20 is set to -10,1,
the display shows "oFF" and the sensor is disabled. Correcting the
parameter upward enables the sensor again.
The controller then terminates a defrost cycle only by time which is
set by parameter P28.
Upon applying voltage to the controller the display shows the tem-
perature of the control (room) sensor. After you have entered the
access code (see chapter "unlock keys") you have to program the
configuration of the controller to suit your application:
• kind of temperature sensor and display value (°C/°F)
• Please note that you need the special access code '70' to
change sensors. Please note that all temperature setpoints will
be set to default.
• switching mode of relay K1: parameter P10
• defrost method: P23
• evaporator fan mode: P13
• alarm mode: P30
The basic setup is now complete and you can edit the missing set-
points, delay times etc.
Sensor correction
If for any reason the actual sensor values displayed should not match
with the temperature you read from a high accuracy thermometer, you
can correct the error with parameters P19/P20.
org. created: 4.3.09, tkd/jr checked: 8.4.2009, ek/ha released: 27.4.2009, mkt/sha translated: 11.5.09, tkd/jr
CONNECTION INFORMATION & SAFETY INSTRUCTIONS
The guarantee will lapse in case of damage caused by failure
to comply with these operating instructions! We shall not be
liable for any consequent loss! We do not accept liability for
personal injury or damage to property caused by inadequate
handling or non-observance of the safety instructions! The
guarantee will lapse in such cases.
This manual contains additional safety instructions in the
functional description. Please note them!
If you notice any damage, the product may not be connected
to mains voltage! Danger of Life!
A riskless operation is impossible if:
• The device has visible damages or doesn't work
• After a long-time storage under unfavourable conditions
• The device is strongly draggled or wet
• After inadequate shipping conditions
• Never use this product in equipment or systems that are
intended to be used under such circumstances that may
affect human life. For applications requiring extremely
high reliability, please contact the manufacturer rst.
• The product may only be used for the applications
described on page 1.
• Electrical installation and putting into service must be
done from qualied personnel.
• During installation and wiring never work when the
electricity is not cut-off ! Danger of electric shock!
• Never operate unit without housing.
Danger of electric shock!
• All ‘PE’ terminals must be connected to ground.
Danger of electric shock! Additionally, the internal noise
lter will not work, faulty indicated values may occur.
• Please note the safety instructions and standards of your
place of installation!
• Before installation: Check the limits of the controller and
the application (see tech. data). Check amongst others:
- Make sure that all wiring has been made in accordance
with the wiring diagram in this manual.
- Supply voltage (is printed on the type label).
- Environmental limits for temperature/humidity.
- Maximum admitted current rate for the relays. Compare
it with the peak start-up currents of the controlled loads
(motors, heaters,etc.).
Outside these limits malfunction or damages may occur.
• Sensor/probe cables must be shielded. Don’t install them
in parallel to high-current cables. Shielding must be
connected to PE at the end close to the controller.
If not, inductive interferences may occur.
• Please note for elongation: The wire gauge is not critical,
but should have 0,5mm² as a minimum.
• Mounting the controller close to power relays is
unfavourable. Strong electro-magnetic interference,
malfunction may occur!
• Take care that the wiring of interface lines meets the
necessary requirements.
• All used temperature sensors must be identical. Never
use different types at the same time. This will not work.
• TF-type sensors are not designed for being immersed in
uids permanently. In such a case, always use dip-ttings.
With extreme temperature variations, the sensor may be
damaged.
Cleaning
The use of a dry, lint-free cloth and household agents is
sufcient to clean the product.
Never use acids or acidic uids! Risk of damage!