DTA01C024 Datasheet, PDF (2/3 Pages) List of Unclassifed Manufacturers – Monitoring Relays Motor temperature

DTA01, DTA02, PTA01, PTA02
Supply Specifications
Power supply
Rated operational voltage
through terminals:
A1, A2 (DTA01, DTA02)
2, 10
(PTA01, PTA02)
724:
024:
115:
230:
Dielectric voltage (1.2/50 µs)
Supply to input
Supply to output
Input to output
Rated operational power
AC
DC
Overvoltage cat. III
(IEC 60664, IEC 60038)
24 VDC ± 20%, insulated
24 VAC ± 15%
45 to 65 Hz, insulated
115 VAC ± 15%
45 to 65 Hz, insulated
230 VAC ± 15%
45 to 65 Hz, insulated
DC supply
2 kV
4 kV
4 kV
AC supply
4 kV
4 kV
4 kV
2.5VA
1.5W
Mode of Operation
DTA01, DTA02, PTA01 and
PTA02 monitor the resis-
tance value of the PTC
resistors connected to the
terminals T1 and T2 (or 5
and 6). This value is related
with their temperature (often
the three coils of a motor) so
to offer a prompt reaction to
over temperature.
Example 1 - DTA01 or PTA01
The relay operates as long
as the measured resistance
is below the rated value. The
relay releases if the mea-
sured resistance (i.e. the
temperature of the motor
coils) exceeds the rated val-
ue.
Example 2 - DTA02 or PTA02
The relay operates and the
yellow LED is ON as long as
the measured resistance is
below the rated value. The
relay releases and the yellow
LED is OFF if the measured
resistance (i.e. the tempera-
ture of the motor coils)
exceeds the rated value.
Provided that the resistance
has dropped below the rat-
ed value (i.e. the tempera-
ture of the motor coils has
returned cold), the relay
operates when the intercon-
nection between terminals
Z1, Z2 or 8, 9 is interrupted
or the reset button on the
front of the unit is pressed.
General Specifications
Reaction time
Alarm ON delay
Reset delay
Accuracy
Temperature drift
Repeatability
Indication for
Power supply ON
Relay ON
Environment
Degree of protection
Pollution degree
Operating temperature
Storage temperature
Housing dimensions
DIN-rail version
Plug-in version
Weight
Screw terminals
Tightening torque
Approvals
CE Marking
EMC
Immunity
Emission
< 150 ms
(resistance rising from
-20% to +20% set value)
< 500 ms
(resistance decreasing from
+20% to -20% set value)
(15 min warm-up time)
± 1000 ppm/°C
± 0.5% on full-scale
LED, green
LED, yellow
(EN 60529)
IP 20
3 (DTA01, DTA02),
2 (PTA01, PTA02)
-20 to 60°C, R.H. < 95%
-30 to 80°C, R.H. < 95%
22.5 x 80 x 99.5 mm
36 x 80 x 87 mm
Approx. 150g
Max. 0.5 Nm
acc. to IEC 60947
UL, CSA
Yes
Electromagnetic Compatibillity
According to EN 61000-6-2
According to EN 50081-1
Wiring Diagrams
DTA01
T1 _T
T2
L
A1
A2
N (-)
µm
14
11
PTA01
7T
5
L
µm
2
4
3
10
1
N (-)
2
Specifications are subject to change without notice (01.12.04)