Resistor – Hoyles Zoneguard Grade 3 Zone Omit EN50131-3:2009 Env. Class II User Manual
Page 3
A
B
A
B
Z1
Z1
Y1
Y1
X1
X1
X2
X2
A1
A1
A2
A2
-
-
-
-
+
+
+
+
UNIT
TAMPER
UNIT
TAMPER
NC
NC
T2
T2
C2
C2
A2
A2
T1
T1
C1
C1
A1
A1
-
-
+
+
F +
F +
POWER
POWER
TO
TO
PANEL
PANEL
J1
J1
OPERATIONAL MODE
OPERATIONAL MODE
PROGRAMMING MODE
PROGRAMMING MODE
Z2
Z2
Y2
Y2
-
-
+
+
SDR
SDR
RMT 2
RMT 2
R COM
R COM
RMT 1
RMT 1
KSW
KSW
TO
TO
PANEL
PANEL
NO
NO
C
C
OMITTED
OMITTED
-
-
+
+
OPTIONAL
REMOTE
SOUNDER
OPTIONAL
REMOTE
SOUNDER
Any unused alarm loop on the detection side must be linked out.
This is required is for the Zoneguard to be allowed to reinstate.
The Zoneguard provides a local warning if a zone is not secure
when you try to reinstate it onto the security system. It will leave
both zones omitted if a fault is present. Normally the closed loop
comes from a closed door or a detector that is not detecting. In the
case of an unused zone, the loop allows the Zoneguard to
reinstate the other used zone (if it is clear).
Shunt
Switch
ZG800
A1(2)
A1(2)
C1(2)
X1(2)
Y1(2)
EOL
EOL
Classic fully supervised loop
Fully supervised loop with ZG800 zone omit
The EOL is always monitored by the intruder alarm electronic circuitry. When the shunt switch of the ZG800 is switched,
the ZG800 circuitry starts to monitor the alarm loop (A1 or A2). This is why it is essential that there are no electrical
connections external to the ZG800 between the Alarm loop and the EOL loop. Connections include resistors and links.
The ZG800 alarm loop monitoring is required to prevent faults from being reinstated onto the security system.
Any connections to the X and Y terminals pass through the Zoneguard without interference eg EOL and anti-mask. Anything
across the ‘A’, terminals gets omitted.
Unused zones
Double Doors with DCS/G3 contacts (Only one zone shown for clarity)
Zone omit theory
The main reason to use a Zone Omit Module, is to isolate a 24 hour protected zone from a security system without having full
access to the security system and having isolation rights. It is NOT a local alarm.
One way to isolate a device is to short circuit the monitoring contact, so that when the monitored contact opens it appears as closed
to the system. The simplest way of doing this is with a low cost keyswitch. However with just a keyswitch, an open contact will
switch back onto the security system and cause a false alarm if accidentally left open when switching back. The zone omit module
ensures that this does not happen and gives a local warning if you attempt to reinstate the open omitted device.
The Zoneguard ZG800 achieves this and does not isolate tampers thus allowing end of line monitoring by the security system.
Tamp
Tamp
Alarm
Alarm
W
W
Y
Y
X
X
A
A
1
1
B
B
2
2
C
C
3
3
D
D
4
4
5
5
Z
Z
H
H
Std
Std
EOL
EOL
Alarm
Alarm
Mag
Tamp
Byps
Mag
Tamp
Byps
Alarm shunt resistor to suit control panel
No Alarm
Jumpers set
No Alarm
Jumpers set
Set EOL
No EOL
Jumpers set
Control
Jumpers
Control
Jumpers
Contact 1
Contact 2
Resistor
Resistor