Grounding; Relay Outputs; Auxiliary Inputs /Self-Test Inputs - Interlogix FlexZone Series Product Manual

Chapter 2: Installation

Grounding

Each FlexZone processor, or connected block of FlexZone processors, requires
a single ground reference. For a connected block of processors sharing power
over the sensor cables, the power supply ground serves as the ground reference
for each processor. For a single (standalone) processor that is not connected to
other FlexZone processors, and for processors receiving PoE, connect the
ground lug on the bottom of the enclosure to an approved earth ground at the
processor's location. For a connected block of processors that are not sharing
power over the sensor cables, connect the ground lug on the bottom of one of
the enclosures to an approved earth ground at that processor's location. This
single ground connection will serve as the ground reference for the other
connected processors. The earth ground connection must be stable and noise
free. An improper or unstable earth ground can induce noise in the FlexZone
sensor. Do not use the fence structure as an earth ground. Avoid sharp bends in
the ground wire. Consult the local electrical code for grounding information.

Relay outputs

The FlexZone processor includes four Form C relay outputs available through a
removable terminal block. Each relay has a common connection to either a
Normally Open (NO) or Normally Closed (NC) contact. Each relay has an
associated LED, which indicates when the relay is active (LED ON = relay
active).
Relay contact ratings
The dry contact relays are Form C, latching, rated for 30 V @ 1 A max. In
Remote control mode, you can configure the relays as latching (ON by
command, OFF by command), in flash mode (ONOFF-ON-OFF... by command,
then OFF by command), or pulse mode (ON for a period, then OFF). For flash
and pulse modes, the relay Active/Inactive times are selectable. In Local control
mode the relays remain active for the event's duration or for the selectable Hold
Time, whichever is longer.

Auxiliary inputs /Self-test inputs

Caution: The contact closure inputs to AUX 1 and AUX 2 MUST be voltage-free.
AUX 1 and AUX 2 are voltage sensing inputs. The processor determines an
input's status via an internal reference voltage, and the configuration of the
contact closures and supervision resistors. Figure 53 below provides wiring
diagrams for self-test and auxiliary device inputs. In Local control mode the
inputs activate an internal self-test with AUX 1 activating the relays assigned to A
Side cable alarms and AUX 2 activating the relays assigned to B side cable
alarms. In Remote control mode the AUX inputs serve as auxiliary device inputs
for reporting their status to the SMS.
FlexZone™ Product Guide
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