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Momentary
Switch
Clo
ck/ON
OFF Gnd
Clock Inputs on GR 2404 with ON and OFF
Momentary Push Buttons.
4 Off
4 On
3 Off
3 On
2 Off
2 On
1 Off
1 On
Gnd
+ 5 V
Momentary Switch
Zone 1 ON
Zone 1 OFF
Digital
Bus
Connector
Programmer Jack
Terminator
GR 2404
Control Card
Los Angeles,CA
800-345-4448
4 Off
4 On
3 Off
3 On
2 Off
2 On
1 Off
1 On
Gnd
+ 5 V
Gnd
Input
Occupancy Sensor
Occupancy Sensors
Occupancy Sensors can be used with the GR 2404 but
only in limited ways, Basicly all ON/OFF or one input at a
time. For most applications it is better to order a GR
2404-iDH.
Clock/ON OFF Gnd
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Maintained Switch
ON
OFF
The "Clock" input of a GR 2404 acts as a momentary input
for the first three seconds of the contact closure. After three
seconds it becomes a maintained type input. This means
that if it is connected to a push button and the button is held
for less than 3 seconds the 4 relays will just turn ON. But if
held for more than three seconds and then released the
relays will turn ON when the button is pushed and turn OFF
when it is released.
Hard wired switch input buttons may have pilot lamps on
them if they are Chelsea or Knightsbridge "1 Wire“ switches
by LC & D.
The wire should be shielded with the shield connected to the
GND connection at the panel only.
If connected to a maintained contact such as that from an
inexpensive time clock it will turn ON all 4 zones on contact
closure and all 4 off when the contact is released.
If the zones have been programmed as a Group with a
2 hour sweep and an OFF Sweep Warning then the
OFF sweep will be disabled while the CLOCK contact
is closed (pulled to equipment Gnd) and re-enabled
when released.
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