JBL Ivx HP-DS170 Installation Manual - page 14
14
FAULT MONITORING
The Intellivox includes a single-pole changeover relay
whose contacts are accessible on a 3-pole 3.81 mm-pitch
screw terminal connector, and should be wired as shown
in the table and diagrams below (Fig.12). The conditions
under which the relay operates are defined as part of the
Intellivox configuration in WinControl.
PIN NO. FUNCTION
1
Failure relay CO (common)
2
Failure relay NC
3
Failure relay NO
The relay connections may be configured either as
volt-free, or with additional internal resistors to allow
them to be connected directly to impedance-sensing line
monitoring equipment such as the AXYS Cerberus. This
selection is made by moving PCB jumper K7, located on
the input board - see Fig. 13 on page 15 for location.
• Volt-free mode: In volt-free operation, CO is connected
to NC; a failure condition causes CO to be connected to
NO. This is the factory default configuration, and is
enabled when the jumper K7 is placed on contact pins
p1 and p2.
201601/IvxHPDS_v1.2
JBL
®
Intellivox HP series Installation Manual Rev 1.2
INTERNAL RELAY
Connect to NO or NC as required.
Note: Relay shown in energised
state - i.e., ‘no fault’.
CO
1
NC
2
NO
3
CO
1
NC
2
NO
3
INTERNAL RELAY
Note: Relay shown in energised
state - i.e., ‘no fault’.
2 x 10 kohm
resistors
Volt-free configuration.
Impedance-sensing configuration.
Fig.12 Failure Relay Connector