Clipsal C-Bus Spezifikationen PDF herunterladen (Seite 53)

1C. C-Bus Hardware

2.3 Sending Input Messages

When a C-Bus input or output unit receives a message, it performs a function described in

Table 1. Any internal timers (input units only) on the same Group Address will be forced to cancel.

On A unit’s internal level is set to maximum and its status is set to on.

Off A unit’s internal level is set to zero and its status is set to off.

Ramp To Level A unit’s internal level is set to the level contained in the message. Output

dimmer units ramp to the new level. Two possible status levels exist:

• if the new level is zero, the status is set to off

• if the level in the message is not zero, the status is set to on.

Timer Options Interval timers reside on input units. When activated, time is decremented in

one second intervals. The maximum timeout range is 18 hours, 12 minutes

and 15 seconds (65,535 seconds). Upon reaching a count of zero, the timer

will send an expiry command message.

Table 1 – Command function types performed in response to a C-Bus message

3.0 C-Bus Output Units

C-Bus output units are used to control external loads. They switch these loads in response to

messages received from associated input units. Output units can be programmed in various ways, to

suit the need of various installations.

There are various types of output unit:

• voltage free relays

• voltage free changeover relays

• Professional Series dimmers

• DIN rail dimmers

• DSI Gateway

• analogue outputs (0 to 10Vd.c.)

• infrared transmitters.

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Clipsal C-Bus Spezifikationen Seite 53