Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 154)

T400 Controller Facilities Manual

667/EB/20200/000 Page 15-14 Issue 9

If the detector is active for greater than 60 minutes.

If the detector is inactive for greater than 2 hours.

Note that in Group 1 during time set D, the value is 255, this disables the DFM timer.

15.9.2 Switched DFM

It is possible for a detector or pedestrian push-button to have switched DFM, i.e. at

certain times of day the DFM facility is removed.

To achieve this, two inputs are required for each detector or pedestrian push-button

requiring the switched DFM.

One input has DFM associated with it and the other one does not. The inputs are then

switched inactive by timetable settings such that only one input is operational at any

time of day.

Special Conditioning Software is necessary to prevent the inactive inputs DFM

function from timing off. See section 12.3.

This facility is implemented in firmware for later issues of PB321 firmware. See Option

2 Section 15.9.1.

15.9.3 Cabinet Alarm From Special Conditioning

The Cabinet Alarm LED can be controlled from Special Conditioning. The Special

Conditioning output is OR-ed with the normal DFM output, so either active output

will light the led. If the Cabinet Alarm flashes due to a red lamp failure report from an

LMU, then the outputs from Special Conditioning and the normal DFM are ignored.

15.9.4 Fixed I/O for specific contracts

Certain contracts require that the Controller Inputs and Outputs be fixed for all

Controllers. This is achieved by entering dummy inputs/outputs at the time of

configuration.

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Siemens EH.75M.11. Especificaciones Pagina 154