LA724I power output module

Outputs per power output module

24

Galvanic isolation from control unit

By means of opto-triac and optocoupler specified according to EN 60747-5-2

Insulation voltage

• Opto-triac

5 kV

• Optocoupler

5.3 kV

Galvanic isolation of power outputs from each other

no

Load voltage (for star connection)

• Rated value

230 V AC

• Permissible range

187 ... 264 V AC (TN system)

• Frequency

50/60 Hz (47 ... 63 Hz)

Max. total current per phase and module

32 A

Current per busbar, max.

120 A

Output voltage

Full or half-waves switched during zero crossing

Output current

• Maximum value

5 A

• Residual current, max.

7 mA

Power loss

Typ.P_V = 0.7 W/A x I + 0.18 W/A² x I²
(I = control current in the channel)

Max. switching capacity (100% simultaneity)

1 150 W per channel at 230 V

Note:

The total current per phase must not exceed 32 A.

Min. 75 W per channel

Parallel connection of heat emitters to one channel

• Number, typ.

5

• Minimum power per heat emitter

200 W

Total switching capacity per LA 724I (T_U = 40 °C)

• Without forced ventilation

14.4 kW

• With forced ventilation

22 kW

Load type

Resistive load with a maximum of 15 times the cold current in the first half wave. (In the case of flash emitters, this can lead to a reduction of the permissible switching capacity. These emitters can be measured at Siemens.)

Overload

5 times the rated current for 20 ms

Protective measures

• Thermal monitoring
  • Response threshold

Yes (by NTC thermistor)

92 °C ± 3 °C: Alarm to higher-level controller via PROFIBUS DP

100 °C ± 3 °C: Deactivation of the power output modules

• Short-circuit protection

One fast blow 5 A/250 V fuse per output

• Overvoltage protection

By Transil diodes

Connecting cable

R _max = 14 W
(this ensures short-circuit protection)

Dimensions (W x H x D)

50 mm x 480 mm x 210 mm

Weight

Approx. 5.3 kg