Specifications are subject to change without notice (01.12.04)
1
Monitoring Relays
Motor temperature
Types DTA01, PTA01, DTA02, PTA02
Product Description
Ordering Key
Housing
Function
Type
Item number
Output
Power supply
Motor temperature monitoring relay
Measuring ranges: PTC according to EN 44081
Remote and local alarm reset (DTA02, PTA02)
Output: 8 A SPDT relay normally energized
For mounting on DIN-rail in accordance with DIN/EN
50 022 (DTA01, DTA02) or plug-in module (PTA01,
PTA02)
22.5 mm Euronorm housing (DTA01, DTA02) or
36 mm plug-in module (PTA01, PTA02)
LED indication for relay and power supply ON (DTA02,
PTA02)
Galvanically separated power supply
Type Selection
Mounting
Input
(PTC)
DTA01, DTA02:
PTA01, PTA02:
Terminals T1, T2
Terminals 5, 6
Measuring ranges
Max cold PTC resistance
Alarm setpoint
Return setpoint
Short-circuit detection
Measurement voltage
Contact input
DTA02
PTA02
Disabled
Enabled
Alarm reset
1500
3100
± 10%
1650
± 10%
0 to 10
≤
2.5V (acc. to IEC 60034-11)
Terminals Z1, Z2
Terminals 8, 9
> 10 k
< 500
> 500 ms
Input Specifications
Output
Rated insulation voltage
Contact ratings
(AgSnO
2
)
Resistive loads
SPST or SPDT relay
250 VAC
μ
8 A @ 250 VAC
5 A @ 24 VDC
2.5 A @ 250 VAC
2.5 A @ 24 VDC
≥
30 x 10
6
operations
≥
10
5
operations
(at 8 A, 250 V, cos
= 1)
≤
7200 operations/h
AC 1
DC 12
Small inductive loads AC 15
DC 13
Mechanical life
Electrical life
Operating frequency
Dielectric strength
Dielectric voltage
Rated impulse withstand volt. 4 kV (1.2/50 μs)
≥
2 kVAC (rms)
Output Specifications
DTA 01 C 230
DTA01, DTA02, PTA01 and
PTA02 are precise thermistor
monitoring relays.
They can be used to monitor
the temperature of the coils of
a motor with built-in PTC’s.
The alarm status of the relay
can be reset by either an
external contact or an internal
button (DTA02, PTA02).
The test button allows the
simulation of the fault condi-
tion (DTA02, PTA02).
The red LED indicates the
alarm status.
DTA01, DTA02
PTA01, PTA02
Output
Supply: 24 VDC
Supply: 24 VAC
Supply: 115 VAC
Supply: 230 VAC
DIN-rail
Plug-in
DIN-rail
Plug-in
SPST
SPDT
SPDT
SPDT
DTA 01 C 724
PTA 01 C 724
DTA 02 C 724
PTA 02 C 724
DTA 01 C 024
PTA 01 C 024
DTA 02 C 024
PTA 02 C 024
DTA 01 C 115
PTA 01 C 115
DTA 02 C 115
PTA 02 C 115
DTA 01 C 230
PTA 01 C 230
DTA 02 C 230
PTA 02 C 230