Pamux User’s Guide 133
POWER SUPPLIES
Each non-terminated Pamux station requires a power supply of 5 VDC at 0.5 A. The final Pamux station
on a bus requires an additional 0.5 A for a TERM1 or TERM2 terminator board, bringing the total current
requirements for terminated stations to 1 A. To assure proper operation, the voltage at each Pamux station
should be between 4.9 and 5.1 VDC.
In addition, the analog I/O modules at each B6 analog station require additional power supplies of +15
VDC and -15 VDC (±0.25 VDC). The requirements for current for these analog Pamux stations depend on
the quantity and type of modules used. Table B-6 on the following page lists the current required for each
type of analog I/O module.
Although switching power supplies are typically acceptable, Opto 22 recommends that linear power
supplies be used to power Pamux systems. Linear power supplies offer tight regulation (typically
±0.05%) and low noise (typically 5 mV peak-to-peak).
The following manufacturers provide power supplies that meet Pamux requirements. Contact these
vendors directory for more information.
Acopian Technical Company
P.O. Box 638
Easton, PA 18044
800/523-9478
Condor Electronics
580 Weddell Drive
Sunnyvale, CA 94089
408/745-7141
Power-One Linear Products
740 Calle Plano
Camarillo, CA 93012
800/678-9445
Sola/Heavy Duty
1717 Busse Road
Elk Grove Village, IL 60007
800/879-7652
Unipower
3900 Coral Ridge Drive
Coral Springs, FL 33065
305/346-2442
Note: Always check all power supply polarities before powering up any system.
SPECIFICATIONS
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