Acroprint HandPunch 4000 - Manual (Page 14)

Planning An Installation
12
Wiring
Four basic circuits typically connect to the HandPunch:
• Power Input
• Earth Ground and Shielding
• Networking and Communications
• External Devices
The minimum wire size for these circuits is AWG 22; the maximum wire size
is AWG 18. Schlage Biometrics recommends using Belden 82732 or its
equivalent when wiring for RS-422 communications.
The HandPunch uses an internal switching regulator to obtain internal
operational power. It accepts input voltages from 12 to 24 VDC or 12 to 24 VAC
at 50 to 60 Hz. The HandPunch comes with a 120 VAC to 13.5 VDC power
supply (Class 2, Model No. P48131000A010G-120 VAC, 60 Hz, 21 W, 13.5
VDC output @ 1000mA), if need an optional 220 VDC power supply is also
available (this power supply was not evaluated for UL 294).
To power the HandPunch with this power supply, a 120 VAC (or 220 VAC as
applicable) duplex outlet must be within 5 feet of the HandPunch. The power
supply has a 6-foot cable to provide a comfortable reach between power
outlet and HandPunch. The barrel jack at the of the power supply’s cable is
connected to J12 on the HandPunch PCB.
J6 terminal 1 and the center pin of power jack J12 are connected together.
J6 terminal 2 and the sleeve of power jack J12 are connected together.
Neither terminal 1 or terminal 2 is connected to the HandPunch ground.
Do not connect a HandPunch’s power supply to a switched duplex outlet. The
HandPunch must have a constant source of power for proper operation.
The HandPunch uses an internal switching regulator to obtain internal
operational power. It accepts input voltages from 12 to 24 VDC or 12 to 24
VAC at 50 to 60 Hz. An optional power-fail protection circuit board can be
attached to the main circuit board to provide and control battery backup.
The design of the internal power supply is such that any range of the above
input voltages may be used and still provide proper battery charge voltage
and battery backup operation. Switch-over to battery power is automatic and
occurs when the input voltage falls to approximately 10.5 volts. At that time the
internal battery charger is disabled to save power and uninterrupted operation
continues on battery power.
NOTE
NOTE
NOTE
Battery
Backup
Power
Input