Veris Industries H970LCA Install - Manual (Page 2)

H970LCA
Z203252-0E PAGE 2 ©2010 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected] 10101
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INSTALLATION GUIDE
TM
opEration
The H970LCA is a current-sensitive device that monitors DC current (amperage)
in the conductor passing through it. The unit combines a Hall Effect sensor with
proven transducer circuitry, with a status output suitable for connection to building
controllers or other appropriate data acquisition equipment operating at up to
30 volts. The H970LCA requires supply voltage to generate its output. Selectable
amperage ranges and output types maximize the installation flexibility.
The H970LCA housing offers unprecedented mounting flexibility. The mounting
bracket can be attached in three different places. Additionally, the bracket is
compatible with the Veris AH01 DIN Rail clip, allowing DIN mounting.
notEs
For load currents less than sensor minimum rating:
Wrap the monitored conductor through the center hole and around the sensor body
to produce multiple turns through the “window.” This increases the current measured
by the transducer.
Controller must be programmed to account for
the extra turns. e.g., if four turns pass through
the sensor (as shown) the normal controller
reading must be divided by 4.
CAUTION
RISK OF EQUIPMENT DAMAGE
• Derate the product’s maximum current for the number of turns
through the sensing window using the following formula.
Rated Max. Amps ÷ Number of Turns = Max. monitored Amps
e.g. : 100A ÷ 4 Turns = 25 Amps max. in monitored conductor
• Failure to follow these instructions can result in overheating
and permanent equipment damage.
4x
1A
< 3.5 A (Sensor Min.)
Failure to observe the following can result in distorted product calibration:
Observe the arrow on the product showing orientation to current source. 1.
Do not expose the product to current levels greater than the maximum amperage 2.
range.
sEt-up anD Wiring
Slide Switch
Amp Ranges
0-20
0-40
0-80
Amperage Range
Selector Switch
Amp Ranges
0-20
0-40
0-80
To
Load
To
Load
4-20
mA
0-5
VDC
Gnd Power
15-24 VAC/DC
Blink=Normal
Off=No Power
Solid=Overrange
Wiring Diagram
Digital Control
(+) Power
(-) GND
0-5 VDC
4-20mA
AI
Amp Ranges
0-20
0-40
0-80
To
Load
To
Load
4-20
mA
0-5
VDC
Gnd Power
15-24 VAC/DC
Blink=Normal
Off=No Power
Solid=Overrange
scaling
SENSED AMPS
20/40/80A*
4mA/0VDC
0A
20mA/5VDC
SENSOR OUTPUT
*Slide-Switch Selectable
troublEshooting
Problem Solution
The LED is off and no signal is
produced
Verify that power is applied to PWR (+) and GND (-)
terminals
The LED is on solid and the output
is at maximum
Verify that the amperage range selection switch is
in the proper position for the current applied to the
conductor.