Basic Operation:
AT4/AT4B controls four (4) independently operated dry form “C”relay outputs. Relays, can be programmed to: turn on
(latch), turn off (latch) or pulse (toggle) at a specified time and day (this is referred to as an event). Events are pro
grammed via the keyboard and LCD display. These events can be designated to operate any one of the four (4) relays
independently. Relay 1 corresponds to RL01, Relay 2 corresponds to RL02, etc. on the display.
Events may be programmed to occur on any day of the week at any time. In addition, events may be repeated at a
specific time on two (2) or more consecutive days (i.e. M-F, Sun-Th, etc) Multiple combinations of individual and block
events may be programmed. Holiday exceptions are individually selected by date and will over-ride all regularly
scheduled events.
The four (4) output relay modes consist of:
Relay OFF - De-energizes the relay(s) selected until a relay On event is detected
Relay ON - Energizes the relay(s) selected until a Relay OFF event is detected.
Disable - Used to cancel and existing programmed event.
Pulse - Momentarily energizes the relay(s) for a selectable time period of 1 sec. to 15 sec
Output relays are designated by the following:
RL01 = Relay 1, RL02 = Relay 2, RL03 = Relay 3, RL04 = Relay 4
Time is displayed in 24 hr military format.
Terminal Identification:
Terminal Legend
Function/Description
RLY1: NC, NO, C
Dry Contact output used to switch controlled devices.
When these relays are energized (On) the NC and C terminals are open and
the NO and C terminals are closed. When these relays are de-energized (Off)
the NC and C terminals are closed and the NO and C terminals are open.
RLY2: NC, NO, C
RLY3: C, NC, NO
RLY4: C, NC, NO
- DC +
AC or DC Input 12 to 24 volt. When using DC carefully observe polarity.
- BAT+
12VDC stand-by battery input (battery leads provided).
FM
When this terminal is connected to DC neg. (-) the “First Man in” feature is enabled.
All relays will remain in their present position until this connection is terminated.
At that time relays will resume normal operation and latest scheduled events will occur
Lithium Battery Socket
12-24 Volt
(Altronix part # LB2032)
AC/DC input
SET CLOCK NOW!
01/01/05 SU 00:00 DS
Fig. 1
12VDC
Rechargeable Battery
- 3
Available from A1 Security Cameras
www.a1securitycameras.com email: [email protected]
