15 CONTROL INPUTS (SYSTEM INTEGRITY & EMERGENCY PROVISION)
Status control
The system will indicate that it is powered up and working correctly by pulling in a single pole two way relay.
If a fault is detected in either the master unit or any slave units the FAULT relay will be de-energized.
This standard feature allows the means of triggering an external remotely located alarm/indicator (not supplied).
The relay contacts will be rated to carry 500mA at 50VDC.
All three relay contacts are on the Phoenix connector (shown above)
The relay contacts are ‘volt free’, i.e. there is no electrical connection between any of the relay contacts and the QFlex
electronics.
Mode control
It will be possible to make the system change its operating mode in the event of an emergency. For example, switch to a
different audio input with different EQ.
The operating mode change can be activated by either of two means:
a. an input line (line X) on the master unit being grounded or released (by an external switch, relay or open collector
output etc).
b. an input line (line Y) on the master unit detecting the presence or absence of an externally applied voltage greater
than +4.5V.
The operating mode change connections are on the Phoenix connector (shown above)
Two Operating Modes (presets) are available – Operating Mode 1 and Operating Mode 2. These allow differences in input
processing and input selection to be programmed, and selected by means of the Operating Mode control inputs.
Since input selection and input mixing may be automatically adjusted using Operating Modes, this may be useful for
emergency evacuation (Voice Alarm) purposes for example. The Operating Mode thus triggered for VA could select the B
input and may have different equalization and gain to the normal Operating Mode.
Since there are two different ways of selecting the Operating Mode using the Operating Mode control inputs, the particular
Operating Mode used for VA could be either Operating Mode 1 or Operating Mode 2 depending on the way the system is
used.
Although Operating Mode selection is only applied to Master units, the effect will be on all members of the QFlex column
since input selection and input processing is for the entire column.
Setting up each operating mode is carried out within the VNET software package (Podware). Instructions can be found in
the VNET Software operation section of this user manual.
16 INDICATORS
There is a dim green LED on the back of each QFlex master unit (master) that will illuminate if the PSU is running.
All modules within a QFlex product have a blue ‘LOCATE’ LED visible from the front of the unit, operating as follows :
a. it will illuminate for a few seconds when power is applied and the system initialises
b. it will stay illuminated if the system fails to initialise
c. it will flash for a few seconds if the LOCATE (wink) button for that speaker is pressed on the PodWare control panel
d. It will flash continuously if any fault that causes the FAULT relay to be dropped is detected.
Summary of Contents for Qflex
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