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Operating Instructions
Electronic Temperature Controller
Type UTR-524 72
A
B
Attention 1!
The separately mounted unit must not be
opened except by authorised persons, and
this should not be attempted unless it is
isolated from the power supply. For the con-
nections refer to the circuit diagram provid-
ed inside the cover. It is mandatory in all
work on the unit to observe the current
safety regulations of the VDE, or its nation-
al equivalent, and those of the local power
supply companies.
In order to qualify for protection class II, it is
necessary to comply with the guidelines of
VDE 0100, or national equivalent standards.
1. Applications
The controller is suitable for universal use,
e. g. for:
Floor direct, floor storage or open area
heating systems, swimming pool control, air
conditioning.
2. . Function
The controller is suitable for:
– heating
– cooling
U
U (Terminal -5)
a) Heating
If the temperature measured by the sen-
sor (actual value) is below the setpoint,
the controller is switched ON (relay picks
up).
If the temperature measured is above the
setpoint, the controller is switched OFF
(relay in de-energized position).
P (Terminal -4)
P
b) Cooling
If the temperature measured by the sen-
sor (actual value) is below the setpoint,
the controller is switched OFF (relay de-
energized).
If the temperature measured exceeds the
setpoint, the controller is switched ON
(relay picks up).
c) Hyseresis
Apart from the setpoint, the temperature
at which the controller switches over
depends also on the hysteresis adjusted
(switching differential), see Fig. 1. It can be
changed by means of the adjuster "hys-
teresis."
d) Temperature setback 9:
(lowered setpoint) is effected by closing a
external-floating contact between termi-
nal 10-11, e. g. by means of an external
timer.
The green indicating lamp is lighted when
the relay is in on state.
The red indicating lamp warns of sensor
failure.
In the event of sensor failure, controller is
switched ON. This state is maintained until
the fault has been remedied. (Another variant
is available which will be in off state if a sen-
sor failure occurs).
D
3. Installation / Connection
Fix base of housing by means of the 4 holes
provided to a suitable surface. Enter cable for
power supply and load through the M 16
screwed
s-switching contact and sensor through the
C
PG-16 screwed gland. Cut out s-cable
opening. Firmly tighten up screwed glands;
tightening torque is 25 Nm.
Tightly seal unused screwed glands using
suitable material.
Modifikation for internal temperature setting
Proceed as follows:
1. Remove cover by taking out 4 screws
2. Lever out cap at top of adjusting knob.
See Fig 2
3. Slacken screw and pull off adjusting knob
4. Push spindle down into the interior
5. Firmly press the closure plug supplied into
the hole from the outside (see Fig. 3)
6. Re-place cover.
Attention 2!
In order to qualify for degree of protec-
tion class IP 65, it is necessary that the
closure plug should be pressed in solid-
ly with the rubber gasket.
Fig. 2
Cable for sensor and s-contact:
Use screened cables where leads are installed
in cable ducts or where they are run in parallel
with power cables for some distance.
For sensors:
May be extended to a maximum of 100 m
with 1.5 mm
For s-contact:
May be extended to a maximum of 10 m with
1.5 mm
2
Cable diameter: 8.6 mm ±0.3 mm.
Installation of sensors:
When installing the sensor, make sure that
satisfactory contact exists with the heat
source. The sensor should be able to follow
the temperature changes in the medium to be
controlled.
When installing the standard type of sensor
in liquid media or in areas where access is
difficult, it is absolutely necessary to provide
a protective tube (to facilitate replacement).
A pipe-mounted sensor should contact the
pipe as fully as possible.
In the case of in-air sensors, care should be
taken to ensure that the slot openings are
positioned in the direction of the air flow.
For electric connection, refer to the circuit
diagram provided inside the controller. All
leads to the controller must be fixed in place.
Attention 3!
The timer contact must be floating (basic
insulation); parallel connection of sever-
al timer contacts is not permissible.
Never apply mains voltage to a floating
timer contact (this will cause destruction of
the controller).
glands.
Enter
cable
Fig. 3
2
conductor area.
conductor area.
4. Drawing
for
5. Wiring diagram
6. Technical data:
Order No.
UTR 20
UTR 60
UTR 100
UTR 160
EDP No.:
0524 72 14 x xxx
Operating voltage:
230 V AC (207...244 V)
48 V...62 Hz
≤4 VA
Power consumption:
Operating temperature: –20°C...50°C
Storage temperature:
–40°C...70°C
Controller type:
ON/OFF
Switching contact:
Relay 1 x c/o contact, floating*
≤16 A cos ϕ = 1
Switching current:
≤ 4 A cos ϕ = 0.6
(250 VAC):
±0.5...± 5K (T ≤100°C)
Hysteresis:
±0.5...±10 K (T >100°C)
Temperature setbacks: Approx. 5 K fixed
Type of sensor:
PTC (KTY 83-110)
Protection class:
II (see Attention 1)
Degree of protection:
IP 65
Cable entry:
Screwed glands: 2 x M 16; 1 x PG 16
Ordering No. PG 16:
000 19 3829 000
Weight:
Approx. 440 g
*Also for switching safety extra-low voltage (SELV)
Technical data of sensors:
A
Standard sensor:
Ordering No.
Ambient
temperature
F 894 002
– 50...175°C
F 891 000
– 5... 70°C
Pipe-mounted sensors:
B
Ordering No.
Ambient
temperature
F 892 002
– 40...120 °C
Air-monitoring sensors:
C
Ordering No.
Ambient
temperature
F 893 002
– 40...10 0°C
Outdoor sensors:
D
Ordering No.
Ambient
temperature
F 897 001
– 40...80 °C
Sensor characteristics:
C
Ohm
C
-55
500
25
-50
525
30
-40
577
40
-30
632
50
-20
691
60
-10
754
70
0
820
80
10
889
90
20
962
100
Specification subject to change without prior notice
( –40°C... 20°C)
(
0°C... 60°C)
( 40°C...100°C)
( 100°C...160°C)
Cable
Protection
Time con-
lenght
class
stant approx
1.5 m
IP 67
30 s
4.0 m
IP 67
30 s
Cable
Protection
Time con-
lenght
class
stant approx
1.5 m
IP 67
60 s
Cable
Protection
Time con-
lenght
class
stant approx
1.5m
IP 30
10 s
Cable
Protection
Time con-
lenght
class
stant approx
none
IP 65
180s
(for all types):
Ohm
C
Ohm
1000
110
1774
1039
120
1882
1118
125
1937
1202
130
1993
1288
140
2107
1379
150
2225
1472
160
2346
1569
170
2471
1670
175
2535
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