Dorma AC-228 Installation & Programming Manual

DORMA ARCHITECTURAL HARDWARE
DORMA Drive, Drawer AC Reamstown, PA 17567 • (800) 523-8483
www.dorma-usa.com
INTRODUCTION
The AC-228 keypad is a digital keyless entry system designed for
access control applications. The keypad is housed in a rugged, plastic
enclosure and is designed to be mounted in a standard single-gang
electrical box. The die-cast keys have bright, easy-to-read yellow
graphics.
Up to 480 entry codes, from 1 to 6 digits in length, can be programmed.
They can activate either, or both of the relay outputs. The "anti-
passback" feature prevents using the same code again before the
programmed time elapses.
All system indicators are long-lasting, solid state LEDs. Two indicators
show the status of the entry system. The left indicator lights red to
indicate power, then turns green when access is granted. The right
indicator lights yellow when the keypad is in "lockout" condition (from
too many incorrect code entries). An internal sounder beeps when each
key is pressed. An internal jumper sets the sounder volume high or low
The SENSE input can be used two ways. If programmed for "door
sense" the input is wired to a normally closed switch on the door to
detect when the door is opened or closed. Forced entry or door ajar
situations can then be detected. Using door sense, the "Auto-relock"
feature will prevent "tailgating" by turning off the Main Relay output
immediately when the door is closed after access has been granted. If
the SENSE input is programmed for "inhibit", the input can be wired to a
"service" switch or automatic timer that will disable the Main Relay when
required.
The REQUEST-TO-EXIT input can be wired to a pushbutton to provide
codeless activation of Main Relay, Auxiliary Relay, Output #3 or Output
#4 (programmable).
The ALARM SHUNT output activates when access is granted. This
output can be wired to shunt alarm contacts on the access door/gate to
prevent triggering of an alarm when authorized access occurs.
The AC-228 keypad is powered from a 12-24V AC or DC source.
Power can be obtained from the access device or a separate power
supply. The EEPROM memory retains all entry codes and
programming, even without power. An internal jumper is provided to
reset the master code. The Main Relay has a 5 Amp capacity. The
Auxiliary Relay has a 1 Amp capacity. Two solid state outputs, capable
of switching 100 mA to common, are programmable to signal forced
entry, door ajar, lockout, alarm circuit shunting, request-to-exit, and
keypad active conditions.
INSTALLATION/PROGRAMMING INSTRUCTIONS
AC-228 Keypad
Page 1
Features
Keypad programmable
480 user codes
1 to 6 digit user codes
4 independent outputs
4 independent timers
2 Form C relay contacts
2 solid state open collector outputs
Program entry codes to activate one or
two relays
Disable input
Door sense input
Request-to-exit/enter input
Keypad tamper lockout
Timed anti-passback
Anti-tailgate
Two LED status indicators
Tactile key feel
Audible code entry verification
12 or 24V, AC or DC operation
08279830 Rev.01/07 Page 1 of 8