Page 17
2)
Connection mode 3 should be selected for it. When the connection mode A without an open circuit
fault detection function is selected, corresponding jumper JP17 (for the detector circuit 2) or JP13
(for the detector circuit 1) on the master control board should be set to the ON position as shown in
Table 3.1.2 and Fig.4.1, and the built-in termination resistors in the control board should be used;
when connection mode B with an open circuit fault detection function is selected, corresponding
jumper JP17 (for the detector circuit 2) or JP13 (for the detector circuit 1) on the master control
board should be set to the OFF position, the built-in termination resistors in the control board should
not be used, and a 10K
Ω
termination resistor should be arranged at the end of the circuit shown in
connection mode B.
3)
In case of a fire alarm of the detector or a short circuit of the circuit, the system will give a fire alarm
of the corresponding circuit. When the connection mode with an open circuit fault detection function
is selected and the circuit has an open circuit or the detector is removed, the system will report a
fault of the corresponding circuit.
4.3 Use of output terminals
4.3.1 Connection modes of output terminals
For the +24V active output mode, the system will provide a short or open circuit fault detection function
for the output circuits; for the passive output mode, the system will not provide such a function but a pair
of normally open dry contacts only. The connection modes of passive output circuits are related to the
actual use and will not be introduced here.
Connection modes of the output circuits:
Connecti
on mode
Type of
load
Connection mode A of the output circuit
(without short/open circuit fault detection)
Connection mode B of the output circuit (with
short/open circuit fault detection)
1
Resistiv
e load
2
Inductiv
e load
The loads in the table above refer to the devices to be driven, such as electromagnetic valves, alarm bell,
horn/strobe, etc. Resistive loads refer to the loads with resistance characteristics, such as the
horn/strobe, the RELEASE indicators, etc.; inductive loads refer to the loads with inductance
characteristics, such as the alarm bell, the electromagnetic valves, etc.
When stopping a driving signal output, an inductive load will generate a counter electromotive force that
may affect or even damage the driving circuit and pose a threat to the stability of system operation, and it
is therefore necessary to mount a freewheel diode on the inductive load to absorb and inhibit the counter
electromotive force.
When mounting a freewheel diode at the end of a circuit, do pay attention to
the direction of the freewheel diode and the polarity of the circuit as incorrect connection may
result in an overcurrent phenomenon of the output circuit.
Generally speaking, the freewheel diode
should be IN4007, etc.
The table above gives a connection mode A without a short or open circuit fault detection function and a
connection mode B with a short or open circuit fault detection function. In connection mode B, an
isolation diode and a 10K
Ω
termination resistor are mounted, and they should be both mounted on the
Summary of Contents for JB-QBL-QM200
Page 1: ...1 JB QBL QM200 Fire Alarm Control Panel Agent Releasing Control Panel...
Page 10: ...Page 7 Fig 2 7 Wiring Diagram of the Fire Alarm Controller Active Output...
Page 11: ...Page 8 Fig 2 8 Wiring Diagram of the Fire Alarm Controller Partial Passive Output...
