Power output modules

Заказные данные
(2)
Аксессуары
(1)

Информационные материалы

Дизайн

Modules enclosed in metal housing
Connection of the phases via conductor rails
Connection of the heat emitters by means of mating connectors (the heat emitter and mating connector must be ordered separately.)
Channel fuses at the front
Cooling is possible with the optional fan module for LA724I and LA724I HP power output modules, see "Fan module"
Internal parallel bus interface
4 diagnostic LEDs for indicating channel/module faults

Функции

Power switching elements

LA724I and LA724I HP power output modules

Power triacs with zero crossover switching
Protection of triacs and opto-triacs against overvoltages by Transil diodes

LA724I SSR power output module

There are no power triacs here. The load is activated via external Solid State Relays (SSR).

Output power

LA724I power output module

24 power channels of 230 V each (8 outputs per phase)
Max. 1 150 W switching capacity per output
Max. 7 360 W switching capacity per phase

LA724I HP power output module

12 power output channels for 230 V/400 V (4 outputs per phase)
Max. 2 300 W/4 000 W switching capacity per output
Max. 9 200 W switching capacity per phase for star connection and max. 16 000 W switching capacity for delta connection

LA724I SSR power output module

24 channels with one digital control signal of 24 V (8 outputs per phase)

Forced ventilation

LA724I and LA724I HP power output modules

Depending on the switching capacity and ambient temperature, the power output modules may have to be forced ventilated. A fan module is available as an option for this purpose, see "Fan module".

For detailed information, refer to the "SIPLUS HCS724I Heater Control System" Operating Instructions, http://support.automation.siemens.com/WW/view/en/55336534.

Temperature monitoring

LA724I and LA724I HP power output modules

There is an NTC thermistor on the heat sink for monitoring its temperature. This temperature-dependent resistor outputs a signal to the SIMATIC S7‑300 at 92 °C ± 3 °C. A second switching threshold at 100 °C ± 3 °C switches off the power outputs of the module.

Supply voltage monitoring

LA724I SSR power output module

The connected 24 V DC supply is monitored for failure. In the event of a failure, the outputs to the Solid State Relay (SSR) are deactivated.
The drivers for the control outputs are monitored for correct functioning.

Fuses

LA724I power output module

Each power output has a 5 A fuse in a fuse holder that is accessible from the front to protect the power triac, and one 32 A fuse per phase to limit the phase current.

LA724I HP power output module

Each power output has a 10 A fuse in a fuse holder that is accessible from the front to protect the power triac, and one 40 A fuse per phase to limit the phase current.

LA716I SSR power output module

Protection for each channel is to be provided externally.

Diagnostics facilities

LA724I and LA724I HP power output modules

Diagnostics functions are provided as standard to detect the following faults:

Internal fuse defective or triac at high-resistance
Triac failed
External fault such as blown fuse, heat emitter or cable breakage

If several heat emitters are connected to one output in parallel, failure of an individual heat emitter is detected by means of extended diagnostics.

LA724I SSR power output module

Two different diagnostics methods are possible:

Diagnostics of voltages from the load circuit allows the following faults to be detected:
- Solid State Relay (SSR) cannot be closed, supply line to the SSR is interrupted, or external channel fuse has ruptured
- Solid State Relay (SSR) cannot be opened, break in emitter or wiring
Diagnostics using the external current measuring module (see "Current measuring module") allow the following faults to be detected in addition (these diagnostics are recommended for fault detection in emitters connected in parallel):
- Rated voltage for channel has been exceeded
- Rated voltage for channel has been undershot

Технические данные

Order number	6BK1700-2BA00-0AA0	6BK1700-4BA70-0AA0
	HCS Power output module LA724I	HCS Power Output Modul LA724I HP
General information
Product designation	Power module LA724I	Power module LA724I HP
Type of control of heat emitters	Half-wave control
Installation type/mounting
Mounting type	Screws in fixing lugs at top and bottom
Mounting position	vertical
Type of ventilation	Self ventilation or forced ventilation
Supply voltage
Rated value (AC)	230 V	400 V
Relative negative tolerance	18 %
Relative positive tolerance	15 %
Line frequency
● Rated value 1	50 Hz
● Rated value 2	60 Hz
● Relative symmetrical tolerance	5 %
Resistance thermometer (RTD)
● Design of electrical connection for supply voltage	Bus bar or ring cable lug
Power supply for the electronics
Design of the power supply	Power supply via central connection
Power electronics
Type of load	Ohmic load
Power capacity, max.	22 kW	48 kW
● for delta connection with fan at 40 °C, max.		36.5 kW
● for delta connection without fan at 40 °C, max.		22.6 kW
● for star connection with fan at 40 °C, max.	22 kW	21 kW
● for star connection without fan at 40 °C, max.	14.4 kW	13 kW
Switching capacity current per busbar, max.	120 A
Switching capacity current per phase, max.	32 A	40 A
Heating power
● Number of digital outputs	24	12
● Number of heat emitters per output, max.	5
● Output voltage for delta connection		400 V
● Output voltage for star connection	230 V
● Power carrying capacity per output, min.	75 W
● Power carrying capacity per output, max.	1 150 W	4 000 W
● Output current for heating power	5 A	10 A
● Design of short-circuit protection per output	Fuse 5 A	Fuse 16 A
● Design of overvoltage protection	Transil diodes
Integration and conversion time/resolution per channel
● Design of electrical connection at output for heating and fan	Socket strip, 8-pole
— Connectable conductor cross-sections, solid	1x (0.2 ... 1.5 mm²)
— Connectable conductor cross-sections, finely stranded with wire end processing	1x (0.2 ... 1.5 mm²)
— Connectable conductor cross-sections for AWG cables, stranded	28 ... 16
Interfaces
Interfaces/bus type	system interface
Interrupts/diagnostics/status information
Number of status displays	4
LED status display	1 LED green = LA status indicator, 3 LEDs red = fault indicator LA per phase
Diagnostics function	Voltage and current diagnosis
Diagnostic messages
● Wire-break	Yes
● Fuse blown	Yes
● Heat emitter defect	Yes
Integrated Functions
Monitoring functions
● Temperature monitoring	Yes
● Type of temperature monitoring	NTC thermistor
Measuring functions
● Current measurement	Yes
Measuring inputs for current
— Design of electrical connection at the measuring inputs for current	Internal
Potential separation
Design of electrical isolation	Optocoupler between main circuit and SELV / PELV
between the outputs	No
Isolation
Overvoltage category	III
EMC
EMC interference emission	Limit value class A to EN 55011 group 1
Electrostatic discharge acc. to IEC 61000-4-2	4 kV contact discharge / 8 kV air discharge
Field-related interference acc. to IEC 61000-4-3	10 V/m (80 ... 1 000 MHz), 3 V/m (1.4 ... 2.0 GHz), 1 V/m (2.0 ... 2.7 GHz)
Conducted interference due to burst acc. to IEC 61000-4-4	2 kV voltage supply cables / 2 kV signal cables
Conducted interference due to surge acc. to IEC 61000-4-5	on power supply and signal cables: 1 kV symmetrical, 2 kV unsymmetrical
Conducted interference due to high-frequency radiation acc. to IEC 61000-4-6	10 V (0.15 ... 80 MHz)
Degree and class of protection
IP degree of protection	IP20
Standards, approvals, certificates
Certificate of suitability	CE, KCC
Degree of pollution	2
Device tag according to DIN EN 81346-2	Q
Ambient conditions
Ambient temperature during operation
● min.	0 °C
● max.	55 °C
Ambient temperature during storage/transportation
● Storage, min.	-40 °C
● Storage, max.	70 °C
● Transportation, min.	-40 °C
● Transportation, max.	70 °C
Air pressure acc. to IEC 60068-2-13
● Operation, min.	860 hPa
● Operation, max.	1 080 hPa
● Storage, min.	660 hPa
● Storage, max.	1 080 hPa
● Installation altitude above sea level, max.	2 000 m
Relative humidity
● at 25 °C, max.	95 %
Vibrations
● Vibration resistance during operation acc. to IEC 60068-2-6	10 ... 58 Hz / 0.15 mm, 58 ... 150 Hz / 1 g
● Vibration resistance during storage acc. to IEC 60068-2-6	5 ... 9 Hz / 3.5 mm, 9 ... 500 Hz / 1 g
Shock testing
● Shock resistance acc. to IEC 60068-2-27	15 g / 11 ms / 3 shocks/axis
● Shock resistance acc. to IEC 60068-2-29	25 g / 6 ms / 1 000 shocks/axis
Dimensions
Width	50 mm
Height	480 mm
Depth	210 mm

Дополнительно

Design	for power output module	Type
Mating connectors
for connection of heat emitter (3 units required for each power output module)	LA724I, LA724I HP	40018384
for the 24 V DC supply	LA724I SSR	A5E00210675
for connection of Solid State Relay (SSR) (3 units required for each power output module)	LA724I SSR	A5E00043661
for connecting the current measuring module	LA724I SSR	A5E00210670
for voltage diagnosticss (3 units required for each power output module)	LA724I SSR	41818384
Data link
5 A quick blow/250 V	LA724I	200021116
16 A slow blow/500 V (3 units required for each power output module)	LA724I HP	A5E01204540

Recommended Solid State Relay (SSR)

SIRIUS SC semiconductor relay/contactor,
e.g. 3RF2350‑1AA02:
semiconductor contactor 50 A,
40 °C,
control voltage 24 V,
screw connection