Dwyer Model BPS-015 User manual
PC-BPS:TEMPLATE
7/9/09
11:14 AM
Page 1
Bulletin PC-BPS
Model BPS-015 Low Cost DC Power Supply
Specifications - Installation and Operating Instructions
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SNAPTRACK
The Series BPS Building Automation Power Supply is used to convert
24 VAC to a regulated DC power source for transmitters with 4 to 20 mA
outputs. The output voltage can be field adjusted from 1.5V to 27V using
a potentiometer. The 3A fuse protects the power supply from over-current
conditions. The snap-on bracket can be quickly surface mounted to any
flat surface.
CAUTION: TO PREVENT OVERHEATING, THE OUTPUT CURRENT MUST NOT EXCEED THE RATIO OF THE OUTPUT
VOLTAGE TO THE INPUT VOLTAGE TIMES THE RATED
CURRENT.
SPECIFICATIONS
Input: 24 VAC/VDC 50/60 Hz.
Output: 24 VDC (full wave rectified and regulated) adjustable 1.5 to 27
VDC.
Maximum Current Output: 1.5A (de-rated to 400 mA for non-isolated
circuits).
Operating Temperature: 32 to 130°F (0 to 55°C).
Humidity Limits: 95% (non-condensing).
Weight: 0.4 lb.
WIRING DIAGRAM
J1
J2
J3
Example:
For output voltage set at 5 VDC, the output current should not exceed 313
mA.
(5V/24V) x 1.5A = 0.313A
OUTPUT
VOLTAGE
ADJUSTMENT
Isolation:
If the DC ground is connected to the AC ground, the fuse will open.
If the AC and DC circuit grounds cannot be isolated, move the shorting
jumper from J1 to J2 and add a shorting jumper to J3. In this case the output current is limited to 400 mA.
©Copyright 2009 Dwyer Instruments, Inc.
REGULATED
DC VOLTAGE 24 VAC IN
OUTPUT
LINE VOLTAGE
TRANSFORMER
Printed in U.S.A. 7/09
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Phone: 219/879-8000
Fax: 219/872-9057
FR# R6-443738-00
www.dwyer-inst.com
e-mail: [email protected]
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