Altronix AT4B Installation Instructions
AT4/AT4B
Annual Event Timer
Installation Guide
Rev. 110805
AT4/AT4B - Annual Event Timer
Overview:
These units are extremely versatile 24 Hour 365 Day Event Timers designed to support a wide range of applications.
Such applications include: Home and Building Automation, Security, Access Control, Lighting Control, Etc.
AT4/AT4B is equipped with four independently controlled form “C” relay contacts that provide many latching and/or
momentary operations during a program schedule of your choice. The EE prom memory allows for programming of unit
prior to/or during field installation. Events may be set for single or multiple operations on a daily and/or weekly
schedule. The block programming feature enables repeating an event on any combination of consecutive days. AT4/AT4B
will compensate for daylight savings time if desired. It automatically adjusts for leap year. Individually selected holiday
exceptions can be programmed to over-ride regularly scheduled events.
Specifications:
• 12 to 24 volts AC or DC operation.
• Stand-by current: 20mA with relays off combined with 40mA for each relay on.
• Four (4) Form “C” relay contacts are rated 10amp @120VAC/28VDC.
• Each relay operates independently.
EE Prom memory protects against loss of programming due to power failure.
•
• Accurate crystal controlled clock.
• Momentary and/or Latching Events.
• 254 individually pro
• Block programming capacity can accommodate a total of 1778 events per week.
• 254 pro
• “First man in” option.
• Alphanumeric LCD display simplifies programming.
• Standard or Daylight Sa
• Automatic compensation for leap year.
• Built-in charger for 12VDC sealed lead acid or gel type batteries
(Max char
• Lithium battery backup maintains clock (Altronix part # LB2032).
• User friendly programming.
Enclosure dimensions: 12.25”H x 7.75”W x 4.5”D
AT4B board level product. Board dimensions (approximate): 7”H x 5.5”W x 1.2”D
grammable Holiday events.
ge current 300mA).
grammed daily/weekly events.
vings Time settings.
Installation Instructions:
1. Mount AT4 enclosure in desired location.
Carefully Review:
Basic Oper
erminal Identif
T
Keyboard Layout and Description (pg. 4)
Programming Instructions (pgs. 4-6)
2. Connect 12 to 24 Volts AC or DC to terminals marked [-DC+]. (when using DC carefully observe polarity).
3. Connect 12VDC battery (optional) to terminals marked [BAT-] and [BAT+] .
4. Insert lithium battery (not supplied or required. Altronix part# LB2032) in battery holder as shown in
ith the (+) positi
W
Note: Lithium Battery (LB2032) must only be installed after initial power up of AT4/AT4B.
5. Connect de
Note: It is impor
Strikes, Bells, Relays, etc. to install a catch diode across the pos (+) and neg (-) terminals of the device.
Connect diode as close to the device as possible with the banded side facing the pos (+) terminal. This will
reduce the possibility of interference.
6. Program clock and desired event schedule (
ation
able (pg. 3)
ication
vices to be controlled to dry outputs marked RLY1 [NC, NO, C] - RLY4 [NC, NO, C]
tant w
T
e side f
v
acing up.
hen connecting DC po
(pg. 3)
(Fig. 1, pg. 4).
wered electromechanical devices such as Mag Locks, Electric
Programming Instructions pg. 4-6).
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Basic Operation:
SET CLOCK NOW!
01/01/05 SU 00:00 DS
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 prog
rammed 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
RLY2: NC, NO, C
RLY3: C, NC, NO
Dry Contact output used to switch controlled de
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 ter
vices.
minals are open.
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 rela
At that time rela
ys will remain in their present position until this connection is terminated.
ys will resume nor
mal operation and latest scheduled events will occur
Fig. 1
Lithium Battery Socket
(Altronix part # LB2032)
12-24 Volt
AC/DC input
12VDC
Rechargeable Battery
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