Honeywell International Inc. RTU-L19 Manuale Utente
1.5.6 Output Cable Relay 2 – Signal Light
Output Relay 2 is used for signaling the status of the door (gateway
occupied / free ) and provides both NO and NC contacts.
occupied / free ) and provides both NO and NC contacts.
The external load can be powered directly from AC or DC power, in
accordance with the following limits:
accordance with the following limits:
Voltage
Working Current
Peak Current (max
0.5 Sec)
0.5 Sec)
Suppressor
30VDC
0.5 A
2 A
1N4004 Diode
30VAC
0.5 A
2 A
MOV 75Vrms
• Inductive load with direct current:
In this case, it is mandatory to use a repeater relay and a 1N4004 diode
in parallel to the coil for the electrical locking device in order to increase
the life of the relay inside the RTU
in parallel to the coil for the electrical locking device in order to increase
the life of the relay inside the RTU
− see Figure 12.
• Inductive load with alternating current:
In this case, it is mandatory to use a repeater relay and the MOV
(75VAC) in parallel to the coil for the electrical locking device in order to
increase the life of the relay inside the RTU see Figure 13.
(75VAC) in parallel to the coil for the electrical locking device in order to
increase the life of the relay inside the RTU see Figure 13.
• Life: assuming the relay is activated 200 times a day and that the
voltage/current limits of the preceding table are respected, the life is
guaranteed for at least 6 years; if the relay is activated less frequently,
the life of the relay increases proportionally.
guaranteed for at least 6 years; if the relay is activated less frequently,
the life of the relay increases proportionally.
• In case of excessive use (> 200 operations / day) it is suggested to use
an external relay.
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