Acromag microBlox uBSP-P-1, User Manual, Page: 30 / 32

microBlox® Signal Splitter Model uBSP-P-1
Acromag, Inc. Tel: 248-295-0880 - 30 -
http://www.acromag.com
- 30 - https://www.acromag.com
Power
Connect power at TB3-1 (+) and
TB3-2 (-).
CAUTION: A terminal voltage at or
above 6V min should be maintained
to the unit during operation. Do
not exceed 36VDC peak to avoid
damage to the unit.
Observe proper polarity. Reverse
voltage protection up to 60V is
built-in. Your supply should be
rated at twice the maximum
current draw to allow for potential
inrush current.
Connect 6-32V DC SELV (Safety Extra Low Voltage), up to 2.1W including input
module. Your current draw will be dependent on your choice of input module,
whether you use one or both splitter output channels, output current or voltage,
voltage load, and AUX load. You can approximate power consumption by
combining power of major features you are using and this applies quite well for
voltage levels from 9-32V (multiply this by 1.07 below 9V). A uB41 module is
represents a standard load, and a uB42 represents the largest module load.
POWER FEATURE TYP REQD POWER AT SUPPLY
uBSP-P-1 Splitter w/o Module 0.44W
+uB41 Input Module (Standard Load) 0.29W
..or uB42 Input Module (Maximum Load) 0.66W
+Current Output at 4mA
1
0.08W each
or Current Output at 20mA
1
0.40W each
+5mA AUX Voltage Output (10V/2KΩ) 0.06W
+Voltage Output of 10V into 2KΩ 0.12W
MAX TOTAL w/uB41or equivalent 1.59W Typical
MAX TOTAL w/uB42 or equivalent 1.96W Typical
1
Note : Incremental power consumption of current output is ~0.02W/mA.
POWER REQUIRED BY FEATURE BY MODULE TYP
MODEL BASE V-OUT I-OUT AUX uB41 uB42 Ptot
uBSP-P-1/uB41 0.44 0.12 x2 0.40 x2 0.06 0.29 0.68 1.59
uBSP-P-1/uB42 0.44 0.12 x2 0.40 x2 0.06 0.29 0.66 1.96
The rightmost column represents typical input power with a 9-32V supply, a
module installed, and full-scale outputs. For voltage below 9V, multiply Ptot by
1.07. To calculate current draw, divide Ptot for your splitter/module/feature
combination by your supply voltage to get typical current ±5% for loaded
conditions (see Table 3 below for computed values).
Power...
Note:
It is recommended that
supplies capable of supplying more
than 2.5A to the carrier be fused
with a surge tolerant fuse.
Choose a fuse rated for 2x current.
Limit maximum fuse rating below
3A Supplies capable of supplying
more than 2.5A to a carrier should
be fused with a surge tolerant fuse
Multiply current by 1.1 for maximum current. Current provided below assume a
loaded carrier with uB module installed, full-scale output currents, and AUX
voltage output loaded w/1KΩ.
Table 3 uBSP-P-1 Current Draw uBSP-P-1 Current Draw
POWER w/Standard uB41 Module w/Loaded uB42 Module
SUPPLY TYP MAX TYP MAX
6V 284mA 312mA 350mA 384mA
9V 177mA 194mA 218mA 240mA
12V 133mA 146mA 163mA 180mA
15V 106mA 117mA 131mA 144mA
24V 66mA 73mA 82mA 90mA
32V 50mA 55mA 61mA 67mA
Power Supply Effect: Less than

0.001% of output span effect per volt DC
change.