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Switch/shutter actuator 8/4gang 16A RMD
75318003
Switch/shutter actuator 16/8gang 16A
RMD
75310002
Technical
Documentation
© Berker GmbH & Co KG 2007
Version: 04.04.2007
Part 5
(Subject to prior change)
75310002.doc
Seite: 90 / 174
Safety function
The switching/shutter actuator can handle up to five different safety functions: 3 x wind alarm, 1 x rain
alarm, 1 x frost alarm. Each safety function has a communication object of its own so that the functions can
be activated or deactivated independently of one another. The safety functions are programmed and
configured for all outputs in shutter mode together (cf. chapter "4.2.4.1 Description of channel-independent
functions – safety functions").
The different outputs in shutter mode of the actuator can be separately assigned to all or to individual safety
functions. Only assigned outputs react to a change of state of the safety objects. The reactions at the
beginning of an alarm ("1" telegram) can be parameterized for each alarm separately whereas the reaction
at the end of an alarm ("0" telegram) can be parameterized for all alarms in common (cf. Fig. 30).
Object
"Wind alarm"
Object
"Wind alarm"
Object
"Wind alarm 1"
Object
"Wind alarm 2"
Object
"Wind alarm 3"
caclical
monitoring
1)
1)
1)
1): common monitoring time, different timers
outputs 3...4
p
rio
rit
y
e
v
a
lu
a
tio
n
h
ig
h
-
->
m
e
d
iu
m
--
>
lo
w
assignment to
wind alarms
assignment to
rain alarm
assigment to
frost alarm
behaviour in
case of
rain alarm
behaviour in
case of
frost alarm
behaviour in
case of
wind alarm
Output
* = optional parameterizable
*
*
*
*
*
behaviour at
the end
of saftey
caclical
monitoring
caclical
monitoring
caclical
monitoring
caclical
monitoring
Fig. 30: Function diagram of channel-oriented safety functions
An output can be assigned independently to the wind alarms, the rain alarm and the frost alarm. If an output
is associated with several alarms, the preset priority decides which of the alarms will prevail and be
executed. An alarm with a higher priority overrides the alarms with the lower priorities. When safety alarm
with the higher priority has ended, the safety alarm with the lower priority is executed on condition that it is
active.
The order of priority of the wind alarms with respect to the frost alarm or to the rain alarm can be
parameterized independent of the channel on the "Safety" parameter page. The three wind alarms have the
same priority with respect to one another (logic OR). The last telegram update to the wind alarm objects
decides which of the wind alarms will be executed. The wind alarm is completely deactivated only after all
three objects are inactive ("0").
An output in the active safety alarm state is locked, i.e. the control of the output concerned via the bus by
direct operation (short-time, long-time telegram, scenes, positioning, central) or by a sun protection function
is prevented. Only a forced position and a manual control locally on the device itself have a higher priority so
that these functions may override a safety interlock. At the end of a forced position or of a manual control,
the safety reaction is re-executed if an assigned safety alarm is still active.