Application 4: Light and Load Control

Presentation

The light-control application is used to switch the lights on and off remotely. The lights are controlled by an impulse relay. The switch order can be either delayed or not.
The load-control application is used to switch the loads on and off remotely. The loads are controlled by a contactor. The switch order can be either delayed or not.

The light and load orders are issued from:

The local FDM121 display.
The local push-buttons (S1, S2...) connected to the impulse relay (light control).
A remote controller using the communication network.
The IFE or EIFE webpages, only when the IO module is connected to a circuit breaker.

The orders issued from a remote controller using the communication network correspond to IO module commands. These orders require a communication interface module (IFM, IFE, or EIFE interface).

Input/Output Assignment

Input	Assignment
I1	Lighting pulse relay feedback
I2	Load contactor feedback
I3, I4, I5, I6	Available

Output	Assignment
O1	Lighting pulse relay command
O2	Load contactor command
O3	Available

Wiring Diagram

Light Control Block Diagram

The light is controlled by an impulse relay. The relay is switched off and on after receiving a command pulse delivered by the IO module or local push-buttons.

The delayed switching order specifies the waiting time in seconds before execution of the order by the IO module.

I1	Lighting impulse relay feedback
FDM121 light on	Instantaneous light switch on order from the FDM121 display
COM light on	Instantaneous light switch on order from a remote controller using the communication network
COM light on/t	Delayed light switch on order with t seconds delay from a remote controller using the communication network
FDM121 light off	Instantaneous light switch off order from the FDM121 display
COM light off	Instantaneous light switch off order from a remote controller using the communication network
COM light off/t	Delayed light switch off order with t seconds delay from a remote controller using the communication network
O1	Lighting impulse relay command

Load Control Block Diagram

The load is controlled by a contactor. The contactor is switched on and off by the IO module. The delayed switching order specifies the waiting time in seconds before execution of the order by the IO module.

I2	Load contactor feedback
FDM121 load on	Instantaneous load switch on order from the FDM121 display
COM load on	Instantaneous load switch on order from a remote controller using the communication network
COM load on/t	Delayed load switch on order with t seconds delay from a remote controller using the communication network
FDM121 load off	Instantaneous load switch off order from the FDM121 display
COM load off	Instantaneous load switch off order from a remote controller using the communication network
COM load off/t	Delayed load switch off order with t seconds delay from a remote controller using the communication network
O2	Load contactor command

Application Events

The following events are generated by the application. For more information on IO module events, refer to Events and Alarms.

Code	Description	Type	Priority	Reset
2560 (0x0A00)	Aux contact of the load contactor 1 is not closed	Alarm	Medium	Manual or remote
2561 (0x0A01)	Aux contact of the load contactor 1 is not opened	Alarm	Medium	Manual or remote

Recommended action: Check operation of the load and the inputs/outputs of the IO module.