ZIEHL TR250 User manual

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 1 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Operating manual
Temperature-Relay TR 250
ATTENTION, new factory settings in Pr2
MINIPAN
®
digital panel meters, temperature
-
and mains controlling,
special purpose instruments for customer requirements www.ziehl.com

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 2 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Index Page
Application and Short Description..................................................................................3
Function Overview and Connection Plan.......................................................................3
Display and Operating Elements ...................................................................................4
Detailed Description.......................................................................................................5
Preset Programs..........................................................................................................5
Operation.......................................................................................................................6
Display Mode...............................................................................................................6
Programming Mode .....................................................................................................6
Sensor Simulation........................................................................................................8
Hints.............................................................................................................................8
Operation (flow chart) ..................................................................................................9
Important Notes .............................................................................................................10
Trouble shooting and remedies .....................................................................................11
Technical Data...............................................................................................................12
Design V4......................................................................................................................14

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 3 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Application and short description
Short Description
Thermostats TR 250 monitor up to 3 sensors at the same time. Output-relays and sensors can
be associated freely. Basic settings like monitoring 3 sensors for the same switching point with
common alarm (e.g. for monitoring motors or transformers) are preset.
Applications
•Protection of motors or generators against overload, also with simultaneous monitoring of
temperatures in bearings
•Protection of dry transformers against overload, also with control of a forced cooling
•General protection of motors and machines against over-temperatures
•Temperature-controller, also for refrigerating systems
•Monitoring of differences in temperature
•Resolution 0.1 °C for measuring range –19,9...99.9 selectable
Approval
USL, CNL Industrial Control Equipment 82VN
Function Overview
•3 sensor-inputs, Pt 100
(RTD) or Pt 1000 in 2- or 3-
wire-connection
•KTY 83, -84, PTC
(thermistors)
•3 relay-outputs (1 change-
over-contact each)
•universal power-supply
AC/DC 24-240 V
Displays
•Built-in 3 digit display for
temperature
•3 LEDs Alarm (state of
relays)
•3 LEDs Sensor
•Stored Values of MIN- and
MAX- temperature can be
displayed
•Programming
Reset
Us
DC +
AC ~ – ~
ϑ ϑ ϑ
3x PTC (KTY 2-L, Pt100 2-L)
TR 250
Temperaturrelais
1163 1203
1T31T21T1
12A2A1 11 14 22 21 24 3432 31
2T32T22T1 3T33T23T1 Y2Y1
°C
Pt 100 / Pt 1000
KTY 83 / KTY 84
PTC
~
+~ –
U s
.com
Alarm 1 Alarm 2 Alarm 3
Sensor 1 Sensor 2 Sensor 3
Set /
Reset
2 s
= exit , = sensor error
= hysteresis
= delay
= relay ( = locked)
= =
= test relay (h)
= simulation
- KTY + - KTY + - KTY +

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 4 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Function Diagram
ϑ 1
ϑ sensor
ϑ2
LED Alarm
Relay (r)
Reset
t
t M
LED Alarm
(locked)
Relay (locked)
t M = measuring time
ϑ 1= LIMIT
ϑ2 = LIMIT+Hysteresis
doF
t M
dAL
Time of Response – Measuring-time t
M
The time of response depends on the number of connected sensors and the measuring
function. At continuously change temperatures, measuring-time t
M
is app. 2 s. At rapidly
changing temperature, such as appears when simulating temperatures with a potentiometer,
measuring time t
M
is app. 4 … 6 s. At sensor-error the measuring time t
M
is up to 7…10 s.
Relay locked switching
In this mode, relay will only switch back, when switching-back-temperature has been
reached, switching back delay time has passed and a reset has been made (button, contact
Y1-Y2 or switching off and on of the TR 250). Readiness is displayed by flashing (1:1) of
appropriate alarm-LED.
Display and
operating elements
1 LED alarm 1
2 LED alarm 2
3 LED alarm 3
4 Display, 3 digits
5 push button up
6 push button down
7 push button Set/Reset
8 LED sensor 3
9 LED sensor 2
10 LED sensor 1
TR 250
Temperaturrelais
1T31T21T1
12A2A1 11 14 22 21 24 3432 31
2T32T22T1 3T33T23T1 Y2Y1
°C
Pt 100 / Pt 1000
KTY 83 / KTY 84
PTC
~
+~ –
U s
.com
Alarm 1 Alarm 2 Alarm 3
Sensor 1 Sensor 2 Sensor 3
Set /
Reset
2 s
= exit , = sensor error
= hysteresis
= delay
= relay ( = locked)
= =
= test relay (h)
= simulation
1 2 3
4
5
6
78910

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 5 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Detailed Description
Pre-Settings
Ex works, 4 programs are pre-set. Based on these settings, the relay can be easily adapted to
the application. Normally only the temperatures of the alarms have to be changed.
Press button "SET" for 10 s when switching on supply voltage. After that the preset program
(Pr1 ... Pr4) can be selected with up/down and confirmed with "SET“
Pr1: Protection of motors/generators with 3 sensors Pt 100. AL1 = pre-alarm, AL2 = tripping,
AL3 = sensor-alarm (all sensors). Pr 1
Pr 1Pr 1
Pr 1 is pre-set ex works.
Pr2: Protection of transformers with 3 sensors Pt 100. AL1 = forced cooling with a periodically
test 1/week, AL2 = pre-alarm and sensor-alarm (all sensors), AL3 = tripping
Pr3: Protection of transformers with 1 sensor Pt 100 and 2 PTC-circuits. AL1 = forced cooling
with a periodically test 1/week (Pt 100), AL2 = pre-alarm and sensor-alarm (all sensors)
(PTC), AL3 = tripping (PTC)
Pr 4: Single association S1 – AL1, S2 – AL2, S3 – AL3
Pr-Nr. Pr1 * Pr2 Pr3 Pr4
Application Explanation Motor- protection
3x Pt 100
Transformer-
protection
3x Pt 100
Transformer-
protection 2xPTC
+1xPt 100
1 Sensor/ 1
Relay
S1/S2/S3
S1/S2/S3S1/S2/S3
S1/S2/S3 Sensor-type 100 (3-L) 100 (3-L) 100(3-L)/ PTC/PTC
100(3-L)
Alarm 1+2 1+2+3 1/2/3 1/2/3
AL/ AL2/ AL3
AL/ AL2/ AL3AL/ AL2/ AL3
AL/ AL2/ AL3 Temperature (°C) 120/130/(250)
130/140/155**
90/PTC/PTC 50/50/50
H Hysteresis (°C) -5/-5/(-5) -10/-5/-5 -10/-/- -2/-2/-2
dAL Switching-delay-time (s) 0 0 0 0
doF Switching-back-delay (s) 0 999/0/0 999/0/0 0
rEL Function of Relay r A/r/A A/r/A r
Err Error (from sensor) -/-/1+2+3 -/1+2+3/- -/1+2+3/- 1/2/3
tSt
tSttSt
tSt Periodically testing - 1 1 -
AL1/AL2/AL3 Alarm - (on)/-/- (on)/-/- -
don Test period (h) --- 168/---/--- 168/---/--- ---
doF Test time (h) 0.01 0,2/0,01/0,01 0,2/0,01/0,01 0.01
Si
SiSi
Si Simulation displays sensor values
Cod
CodCod
Cod Code-lock on/off oF oF oF oF
PIN-Code 504 504 504 504
* Factory settings
** ATTENTION, new factory settings in Pr2

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 6 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Operation :
Display Mode
Indication of the actual temperature of the warmest sensor. LEDs (yellow) show, which
sensor or group of sensors is selected. Change with Set.
Indication of the stored minimum- resp. maximun-value: Press up or down for 2 s. Reset
min/max with Reset for 2 s.
Leave Display Mode with up/down.
Sensors type Pt ... resp. KTY ..: indication of temperature in °C (optional °F)
Sensor type PTC (thermistor): indication of resistance of sensor in kΩ
LEDs Sensor in Display Mode
ON Value of this sensor is being displayed
Flash Sensor Error
2 or more LEDs Sensor ON warmest of those sensors in display
LEDs Alarm in Display Mode
OFF Switching point not exceeded
ON Switching point exceeded, relay switches
Flash Switching delay time dAL runs
Flash Switching back delay time doF runs.
Flash Ready for Reset, switching interlocked.
Reset by button RESET or closing of a contact at terminals Y1-Y2. A continuously closed
contact at Y1-Y2 doesn’t result in a reset.
During periodical relay-test the appropriate LED lights up.
Programming Mode
Programming of sensors 1-3 (S1/S2/S3):
Select menue item with up/down until S1 and type of sensor are alternating in the display ,
e.g. S1/100 for Pt 100.
Here it can be clearly read out, which type of sensor is selected and which alarms are
effected by this sensor (red LED Alarm on).
Enter into programming with Set.
- Select type of sensor with up/down (diF can be selected at S3, if S1 and/or S2
are not PtC. with S3 = diF it is handled as difference sensor 2 minus sensor 1).
- Compensate line-resistance (enter value of resistance of line) or select 3-wire or nc (not
connected, if no sensor is connected to this input). At setting PtC no compensation of line-
resistance is necessary/possible.
- 2-wire, compensation of line-resistance:
To compensate the line resistance schort-circuit the wires nearby the sensor and measure
the line resistance.
With 2-wire connection and a common line for all signals, all sensor measuring currents will
be added on the common line. Thus the value of the compensation line resistance RK must
be calculated as follows:
RK=(n+1) x RL/2 (RL = line resistance of two wires, n = number of sensors)
We recommend using 2 or bettering 3 wires for each sensor.
- Combination of sensor and Alarms (AL/E), important: Here it is programmed, which alerms
(=relays) are affected by the sensor.. Select alarm with up/down. Set switches alarm on or
off (see red LED at alarm-contacts). The LEDs of the activated alarms are alight.
Leave menue item with button Set when Eis in display (on to next menue item)

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 7 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Programming of Alarms 1-3 (AL1/AL2/AL3):
Select menue item with up/down until AL1 and Limit (value) alternate in display, e.g. AL1 and
130 for 130 °C.
Here it can be clearly read out, which limit is programmed and of which sensors the alarm is
effected (yellow LEDs sensor on).
Enter into programming with Set.
- Set limit with up/down. At sensors type PtC no limit can be programmed.
- Hysteresis. Negative hysteresis = MAX-alarm, the relay switches at the programmed limit
and switches back after the temperature is below the limit by the value of the hysteresis.
E.g limit 130 °C and hysteresis -5 °C: Relay switch es at 130 °C and back at 125 °C.
Positive hysteresis everything inverted = MIN-limit . At sensors PTC no hysteresis can be
programmed.
- Alarm delay dAL: An alarm is beeing suppressed for this time. Short exceedings of the limit
do not result in an alarm.
- Switch-back delay doF: An alarm is switched off this time after the temperature is below the
limit, e.g. a cooling fan can cool down a transformer for this additional time to ensure, that it
needn't be started again after a short time.
- Function of relays:
r
rr
r-closed-circuit current mode, relay is picked up in GOOD condition (=limit not exceeded)
and releases when the limit is reached. Advantage: Errors and malfunctions will
normally result in an alarm. Disadvantage: with switched off device and shortly after
switching on the supply voltage an alarm is reported. Disadvantageous when the
supply-voltage of the device is created by the monitored transformer.
A
AA
A-operating current mode. Relay is released in GOOD condition and releases when the
limit is exceeded. No alarm when supply-voltage is off. This mode is applied normally
with heatings, fans or for tripping of transformers.
rL/AL
rL/ALrL/AL
rL/AL: Alarm switches interlocked. Reset only after the temperature is below the limit (+
hysteresis) and after switching-back delay time has passed.
- Error: At Err/SE it can be programmed, if the relay switches at troubles (short-circuit or
interruption) at a sensor. (or error of device Er3/4). Select sensor with up/down. Set
switches sensor on or off (yellow LED at the sensor input changes). LEDs of aktivated
sensors light up. Leave menue item with button Set when Eis in display (on to next menue
item). We recommend to program this error message for a pre-allarm (Pr2 und Pr3) or a
relay that bis not used for other purposes (Pr1).
•LEDs in Programming Mode
Sensor-programming appropriate LED Alarm is alight
Alarm-programming appropriate LED Sensor is alight
Err, Error at Sensor appropriate LED Alarm is alight
Test Relay (tSt):
At this menue item it can be programmed, z´that a relay switches after a time don, e.g. 1
week (= 168 hours) for the time doF, e.g. 0,2 h (12 minutes) into alarm state, for starting a
pump or a fan for a short time to make them move and thus to ensure, that bearings are not
damaged by long lasting times without activity.
Select alarm with up/down. Set switches on to don and doF.
don = --- = test not avtive.
Leave menue item with button Set when Eis in display.
At programs Pr2 and Pr3 a test is programmed for relay 1 (168h/0,2h).
Sensor Simulation (Si):

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 8 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
At this menue item a sensor can be selected and with the buttons up/down a measured
temperature can be simulated. All functions of the device act as if the temerature was
measured in real.
15 minutes after the last button has been pushed, the device automatically returns to normal
measuring mode.
Code (Cod):
After setting all parameters they can be protected by activating the code lock. After pushing
Set, the display indicates Pin.
Adjust with buttons up/down Pin 504 (factory setting). After pushing Set, code lock can be
activated or switched off. After pushing Set again, an individual Pin can be selected (write
down).
When code lock is activated all parameters can be seen but not be changed anymore.
In case of problems with the code lock (forgotten Pin) the lock can be switched off and the
Pin can be set back to 504, by pushing button set while connecting the device to supply-
voltage until Code / ofF is indicated in the display.
Hints:
- With programs Pr1 to Pr4 the most important parameters can be pre-set for various
applications. After that only slight changes should be necessary, e.g. setting of the limits for
the alarms.
- After a menue-item has been finished, it is automatically switched to the next menue-item.
E.g. after programming the combination of sensor and alarm for sensor 1 it is switched to
sensor 2 when set is pushed.
- When the right decimal-point in the 7 segment-disply is alight, you have left the display-
mode and you can select the different menue-items with up/down (left vertical column in
flow chart).
- When the right decimal-point in the 7 segment-disply is flashes, you are i a menue-item.
Parameters can be changes with up/down in this mode (right side of flow chart).
- Longer pushing of up or down accelerates the changes in the display.
- Button up/down pushed at the same time sets actual programmed parameter to zero.
- With a reset (push Set/Reset for 2 s) you return to display-mode from any position in the
programming-mode (last programmed parameter is stored).

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 9 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Operation:
RESET / 30 s / 15 Min.Simulation
2s=Max
2s=Min
Reset
Reset
Sensor
1-3 Max.
Sensor 3
Sensor 2Sensor 1
Sensor 1
Typ
100
1.0
83
84
PtC
DIF
nc
99.9
0..
3-L
AL
E
Sensor 2
Sensor 3
.....
.....
Alarm 1
Limit
PtC
Alarm 2
Alarm 3
Limit
-199..999 ° -99..99 °
H dAL
0..999 s
doF
0..999 s
rEL
r
A
rL
AL
Err SE
.....
.....
Test Relay
AL
E
don
0..999 h
doF
h
0.01-9.99
Simulation
S 1
S 2
S 3
Code
PiN
999
..000
OK
PtC / 0..999 kΩ
100, ..84 /
-199...999 °
3xErr
on
oF
PIN
...
000..999
3xon/oF
Up
Set
Down
Reset
= >2s Set
1)
2)
E
AL1
AL2
AL3
SE
S1
S2
S3
E
AL1
AL2
AL3
S1
l1
tst
si
Cod
1) Change of sensor-type Temp. / PTC clears
association sensors/alarms
2) Monitoring of difference in temperature
selectable for sensor 3, only when type of
sensor 1 and 2 are identical
(dif = sensor 2 minus sensor 1)
3) 0,1 °C measuring range –19.9...99.9
LEDs on type-plate display appropriate inputs
and outputs
Programming level 1/2: dot lights/flashes
Up/Down simultaneously sets value to Zero
Code-Reset = 2s SET when switching on device
(PIN = 504)
Pre-Settings = 10 s SET when switching on
device
Different pre-settings and °C / °F / 0.1 °C can be
selected factory reset with Up/Down
Legend:
3-L = 3-wire-connection
AL = alarm (or Relay-function)
Cod = Code (PIN)
DAL = delay until alarm
DoF = delay until switching back
DiF = measuring of difference in temperature
E = exit (leave loop)
Err/SE = association which relay
reports / Sensor Exit
H = hysteresis
on/of = on/off
rEL = function of relay
r = closed circuit current mode
A = operating current mode
rL, AL = with locked switching
S = sensor
100 = Pt 100 (RTD-sensor)
1.0 = Pt 1000
83, 84 = KTY-sensor 83, 84
PTC = Thermistor
Nc = not connected
Si = simulation
Tst = relay-test, periodical test after time don
duration doF (both in hours)
don = --- = no test
Error reports:
Er 1 = short-circuit in sensor or line
Er 2 = break of sensor or line
Er 3/4 = internal error of device
Err = common error
EEE = measured values too high
-EE = measured values too low

(datum / name): 06.05.10 Fu Z. Nr.: 1163 0711.9
Page 10 of 16 Type: TR 250
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: [phone], Fax: -56, e-mail: [email protected]e
Important notes
ATTENTION
Dangerous electrical voltage!
May lead to electrical shock and burn.
Before beginning of work switch unit and equipment free of voltage.
To use the equipment flawless and safe, transport and store properly, istall and start
professionally and operate as directed.
Only let persons work with the equipment who are familiar with installation, start and use and
who have appropriate qualification corresponding to their function. They must abserve the
contents of the instructions manual, the information which are written on the equipment and
relevant security instuctions for the setting up and the use of electrical units.
The equipments are built according to EN and checked and leave the plant according to
security in perfect condition. To keep this condition, observe the security instructions with the
headline „Attention“ written in the instructions manual. Ignoring of the security instructions may
lead to death, phyical injury or damage of the equipment itself and of other apparatus and
equipment.
If, in any case the information in the instructions manual is not sufficient, please contact our
company or the responsible representative.
Instead of the industrial norms and regulations written in this instructions manual valid for
Europe, you must observe out of their geographical scope the valid and relevant regulations of
the corresponding country.
Attention!
When all relays are programmed in operation current mode (= pick up at alarm),
a loss of the supply voltage or an instrument failure can remain unidentified. When
the relay is applied as control instrument, the operator must ensure, that this error is
recognized by regular examinations. We recommend to program and accordingly
evaluate at least one relay in the closed-circuit current mode.
Attention! Connection of Sensors
Temperature sensors must be connected to the plug-in terminals 1T1, 1T2, 1T3 .... To ensure
proper operation this plug-in terminals have gold-plated contacts. Do not use these plugs for
other terminals.
Universal power supply
The TR 250 universal power supply works within the range AC/DC 24-240 V. Before switching
on make sure, that the rated supply voltage Us of the type- plate and the mains voltage are the
same.
!