PAGE 6
CONNECTING EMERGENCY OVERRIDING PORT
C
ONT
R
ELAY
12
15
S
Z
D
C 24V
+
T
RIG
R
ELAY
1
24V DC
(PS9400)
-VE
TO VOLUME CONTROL
OVERRIDING RELAY OR
OTHER E/CY. INDICATOR OR
EMERGENCY INTERFACE
LOAD : 24V DC 2 AMPS
EMER. PAGING
MICROPHONE
SWITCH OR
OTHER EMER. TRIGGER
More than often, volume controllers are installed at areas that requires sound level to be attenuated, eg. conference
room, etc.
Overriding is required when an emergency switch is pressed, normally via firemen paging mic with a dry contact.
With the connection shown, whenever the switch is pressed, it would trigger the internal relay which shall then
provide a dry contact. It can be used to trigger overriding relay at volume controller or other external device such as
emergency light indicator. It can also be used to trigger ALL CALL.
Please ensure the loading does not exceed the limits as indicated. Polarity must also be observed when connecting
this port.
to trigger volume controller
overriding relay, etc.
ampereselectronics.com
PIN 8-CO M
PIN 7-24V
PIN 6-Z6
PIN 5-Z5
PIN 4-Z4
PIN 3-Z3
PIN 2-Z2
PIN 1-Z1
PIN 8-CO M
PIN 7-24V
PIN 6-Z6
PIN 5-Z5
PIN 4-Z4
PIN 3-Z3
PIN 2-Z2
PIN 1-Z1
Triggering from
EP1200 Emergency
Paging Mic
24V Power supply for VC
overriding
to volume controllers
to volume controllers
Link these ports
ALL CALL paging can be
performed from Emergency
Paging Mic ( EP1200 ), which
when Relay Trigger port is
energised, it shall provide a
voltage free relay contact.
Connect 24V DC power supply
from PSU to trigger external
volume controllers for Overrid-
ing purpose.
When multiple ZS are used, link
the Relay Trig ports together,
thus any triggering from
EP1200 shall perform ALL
CALL paging to all zones at all
the zone selectors.
Note :
Pressing ALL CALL at individual
zone selector shall only trigger
all zones at the unit, without
triggering the relay output ; ie.
this shall not override the
volume controllers
