Datasheet

ManualsBrandsCarlo Gavazzi ManualsAutomationThermistor Motor Protection Relay

Specifications are subject to change without notice (01.12.04) 1

Monitoring Relays

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

Input (PTC) DTA01, DTA02: Terminals T1, T2

PTA01, PTA02: Terminals 5, 6

Measuring ranges

Max cold PTC resistance 1500 Ω

Alarm setpoint 3100 Ω ± 10%

Return setpoint 1650 Ω ± 10%

Short-circuit detection 0 to 10 Ω

Measurement voltage

≤2.5V (acc. to IEC 60034-11)

Contact input

DTA02 Terminals Z1, Z2

PTA02 Terminals 8, 9

Disabled > 10 kΩ

Enabled < 500 Ω

Alarm reset > 500 ms

Motor temperature

Types DTA01, PTA01, DTA02, PTA02

Input Specifications

Output SPST or SPDT relay

Rated insulation voltage 250 VAC

Contact ratings (AgSnO

)µ

Resistive loads AC 1 8 A @ 250 VAC

DC 12 5 A @ 24 VDC

Small inductive loads AC 15 2.5 A @ 250 VAC

DC 13 2.5 A @ 24 VDC

Mechanical life ≥ 30 x 10

operations

Electrical life ≥ 10

operations

(at 8 A, 250 V, cos ϕ = 1)

Operating frequency ≤ 7200 operations/h

Dielectric strength

Dielectric voltage

≥ 2 kVAC (rms)

Rated impulse withstand volt. 4 kV (1.2/50 µs)

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

Mounting Output Supply: 24 VDC Supply: 24 VAC Supply: 115 VAC Supply: 230 VAC

DIN-rail SPST DTA 01 C 724 DTA 01 C 024 DTA 01 C 115 DTA 01 C 230

Plug-in SPDT PTA 01 C 724 PTA 01 C 024 PTA 01 C 115 PTA 01 C 230

DIN-rail SPDT DTA 02 C 724 DTA 02 C 024 DTA 02 C 115 DTA 02 C 230

Plug-in SPDT PTA 02 C 724 PTA 02 C 024 PTA 02 C 115 PTA 02 C 230

Summary of content (3 pages)

PAGE 1
Monitoring Relays Motor temperature Types DTA01, PTA01, DTA02, PTA02 • • • • • 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.
PAGE 2
DTA01, DTA02, PTA01, PTA02 Supply Specifications General Specifications Power supply Rated operational voltage through terminals: A1, A2 (DTA01, DTA02) 2, 10 (PTA01, PTA02) 724: 024: Reaction time Alarm ON delay Overvoltage cat. III (IEC 60664, IEC 60038) Reset delay 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 AC supply 2 kV 4 kV 4 kV 4 kV 4 kV 4 kV 115: 230: Dielectric voltage (1.
PAGE 3
DTA01, DTA02, PTA01, PTA02 Wiring Diagrams (cont.) L L Z1 T1 Z2 A1 12 7 A2 9 8 14 T T2 µm µm 5 11 2 4 3 T 10 1 N (-) N (-) PTA02 DTA02 Operation Diagrams DTA01, PTA01 DTA02, PTA02 Power supply Power supply 3100 W Reset contact 1650 W Relay ON 3100 W 1650 W Relay ON Dimensions DIN-rail Plug-in 94 90 63 28.5 Specifications are subject to change without notice (01.12.04) 80 36 63 99.5 83.5 80 22.5 28.