The LA 716 provides 16 channels for switching resistive loads. Up to 650 W can be used per output channel.
Дизайн
- Connection of heat radiation devices over 8-pole front connector (not included in scope of supply →see documentation)
- Mains infeed over 3-pole terminal (Lx/N/Ly) on the front
- 16 channel fuses in accessible holders
- Cooling is possible using an optional fan unit
Функции
Output power
- 16 power channels, each 230 V (8 outputs per phase)
- Up to 650 W switching capacity per output with 100% concurrence
- Up to 10400 W switching capacity per module
- Zero-crossing power triacs
- Protection of triacs and opto-triacs by transil diodes against overvoltage
Forced ventilated
Depending on the switching capacity and ambient temperature, the power output may require forced ventilation. For this purpose, an optional fan unit is available as an accessory (see accessories). For further details, see the manual.
Temperature monitoring
For monitoring the heat-sink temperature, there is an NTC thermistor on the heat sink. In the event of overheating, this temperature dependent resistor outputs an alarm to the higher-level control system.
Fuses
For each channel of the LA 716, a 5 A fusible link for protection of the power triacs is accessible externally. A safety cover is provided for protection against finger touch.
Diagnostic capability
Diagnostic functions are available as standard for detecting the following faults:
- Triac circuit-breaker, high-resistance or fused junction
- Channel fuse on module defective
- External fault such as fuse rupture, break in radiation device or wire
Технические данные
| Supply voltage | |
|---|---|
| for control section | provided internally over the bus module |
| Power outputs | |
| Number per power output | 16 |
| Galvanic isolation | |
| - to control section | through opto-triac and opto-coupler which are specified in acc. with VDE 0884 |
| - between power outputs | No |
| Load voltage | |
| - Rated value | 230 V AC |
| - Permissible range | 187 ... 264 V (TN network) |
| - Frequency | 50/60 Hz (47 ... 63 Hz) |
| Output voltage | full-wave switched at zero crossover |
| Output current per channel | |
| - Rated value | 2.82 A |
| - Permissible range | 0.1 ... 2.82 A |
| - Residual current | ≤ 10 mA |
| Maximum switching power per channel without ventilation and with ventilation (rate of flow ≥ 2 m/s) | 650 W at 230 V |
| Loads | |
| - Load type | Resistive load with a maximum of 15-times the cold current in the first half-wave |
| - Overload | Five-times rated current for 20 ms |
| Protective measures | |
| - Thermal monitoring | Yes (through NTC thermistor) |
| - Short-circuit protection | One 5 A/250 V F fuse per output |
| - Overvoltage protection | Yes |
| Connecting cables | |
| - Resistance | max. 14 Ohm(to guarantee short-circuit protection) |
| - Length | 100 m unshielded500 m shielded |
| Mechanical data | |
| Dimensions W x H (mm) | 237 x 233.4 |
| Degree of protection to DIN 40050 | IP00 |
Дополнительно
| Description | Type | Manufacturer | Manufacturer Type No. | Siemens Type No. |
|---|---|---|---|---|
| Replacement fuse for power module | F5AH250V | Littelfuse | 216005.MA000 | 200021116 |
| 230 V fan unit with 3 fans | On request | Rittal | On request | On request |
| 8-pole, terminal strip with screw terminals | SLT 5.08/8B SN OR | Weidmüller | 1611770000 | On request |
Please contact:
Siemens AG
A&D SE EWF EMS 3 schmidt.bernhard@siemens.com
A&D MC PM1 wolfgang.zapf@siemens.com