Access control system power requirements are uniquely different
from other systems. Unlike camera system power requirements,
access control systems draw more current for locking hardware
and during access control-related events. 75 – 85% of access
control operating problems and technical support calls are due to
power issues.* Access control systems require steady and clean
(filtered) low-voltage DC current with surge suppression to protect
printed circuit boards and connected devices from damage due to
dirty power (transients and voltage spikes).
SDC power supplies have been developed specifically to help
reduce power system issues and to support electric locks and
access control requirements. Our hybrid design combines the
efficiency of switching power supplies with the inductive load
handling capability of linear power supplies in various 12/24 VDC
current output capabilities and enclosure sizes. Filtering and output
voltage regulation provide protection and ensure the longevity of all
system components.
The high performance, heavy-duty circuitry is ideal for inductive
loads and multi-door applications. With the addition of SDC
programmable controllers or relay modules, the user-friendly
modular designs ensure versatility, interface capability and easy
installation of virtually any electric locking devices, access controls
and related fire & life safety equipment.
• Field selectable dual voltage
• Regulated and filtered linear DC power
• Class 2 output
• Fire/emergency release input
• Isolated battery charging circuit
• Low battery disconnect
• Input and output surge protection
• Visual status indicator (LED)
• Cabinet enclosures with pre-configured control module mounting holes
Optional Features
• 230 VAC, 50/60 Hz input
• Key lock cover
• 6’ power cord
• System on/off switches
• Choice of compatible door control modules
FIRE/EMERGENCY RELEASE INPUT
A fire alarm input provides simultaneous release of all fail safe
locks and door holders in case of an emergency.
ISOLATED BATTERY CHARGING CIRCUIT
A separate charging output provides 13.5 or 27 volts to
fully charge the batteries. The secondary output is always
precisely maintained at 12 or 24VDC to protect locking
devices and components from over voltage while the
batteries are charging. The specified secondary output
current is also maintained while batteries are charging. Derating of the secondary output current is not required when
charging batteries.
LOW BATTERY DISCONNECT
Batteries are disconnected from the output circuit prior to
deep discharge, preventing battery destruction. Batteries are
not included and should be ordered separately.*
DOOR CONTROL MODULES
Door control relay modules are available to meet virtually
any application need. All wiring for lock hardware, access
controls, remote controls and monitoring is terminated at one
central location. Installation and troubleshooting is simplified.
Modules may be factory installed or ordered separately for
field installation as needed. Cabinet enclosures are preconfigured with mounting holes to accommodate door
control modules. All modules are individually fused for
protection of multiple station systems.
INPUT & OUTPUT SURGE PROTECTION
Input and output surge protection is built-in. The AC input
voltage is circuit breaker protected and the outputs are PTC
protected.
VISUAL STATUS INDICATOR (LED)
LED tri-color status indicators provide information regarding
the AC input, DC output and battery backup status. Outputs
for remote annunciation are available.
SYSTEM ON/OFF SWITCHES
Optional System On/Off switches are available both inside
the cabinet enclosure or on the cabinet enclosure cover.
6’ POWER CORD
An optional 6’ power cord simplifies installations that do not
require conduit where permitted by code.
KEY LOCK COVER
Optional key lock cover available where tamper-resistance is
required.
INTERNATIONAL STANDARD INPUT
Additionally an alternative 230VAC international standard
input is an available option