Relay outputs.
LES-RACK-M1 has 4 relay outputs with one switching contact. Individual relays
switching during extinguishing can be user adjusted. The software can be set so that these relays also
react in the “TEST ”mode.
The maximum switching voltage and currents are given in Table No. 4.
Table No. 4 :
Network:
Umax
Imax / Un
AC
60V
0.5
DC
24V
0.5
Door contact
blocks extinguishing when the door is opened.
Opening the door activates the door switch and extinguishing is blocked. When the door is opened,
the extinguishing agent would escape outside the monitored space and its concentration for
effectively extinguishing a fire would be insufficient. The integrity of the circuit of the door contact is
continuously monitored.
The connection diagram for the door contact is in Fig. No.:5
The extinguishing blocked state is displayed on the front panel
by a yellow shining signal “EXTINGUISHING ”light
The resistance values in the diagram are as follows:
Rp: 1K8 Ohm, 0.1 W
Rs: 470 Ohm, 0.1 W
2x RJ12 - temperature sensors
input
from the left, first line 1, second
4x output –
potential-free
contact relay
3x input –
signal
from external
sensors
button for
external
extinguishing
input /
output
RS485
blocking when the
door is open
external horn
Fig. No. 4
Fig. No. 5
Summary of Contents for LES-RACK-M1
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