Veris Industries H922 Install - Manual (Page 2)

6%2)3 INSTALLATION GUIDE H922
Z201167-0E PAGE 2 ©2009 Veris Industries USA 800.354.8556 or 503.598.4564 / [email protected] 05092
Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.
opEration
The H922 is a current transducer that senses current (amperage) in any of three
field-selectable ranges; zero-to-thirty, zero-to-sixty, or zero-to-one hundred twenty
amperes. These ranges represent the maximum current that can be applied to the
monitored conductor. The H922 transforms the monitored current into a 0-5VDC
output suitable for connection to building controllers or other appropriate data
acquisition equipment. The H922 requires no external power supply to generate its
output.
The H922 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.
3x
1A
DANGER: 5A CTs can present hazardous voltages.
Install CTs in accordance with manufacturer's instructions.
Terminate the CT secondary before applying current.
H68xx‑5A CT
240A
300A: 5A
4A
> 120A (Sensor max.)
For load currents greater than sensor maximum rating:
Use a 5 Amp (H68xx series) Current Transformer (CT) as shown.
CAUTION
RISK OF EQUIPMENT DAMAGE
t
%FSBUF
UIF
QSPEVDUT
NBYJNVN
DVSSFOU
GPS
UIF
OVNCFS
PG
UVSOT

UISPVHI
UIF
TFOTJOH
XJOEPX
VTJOH
UIF
GPMMPXJOH
GPSNVMB
3BUFE
.BY
"NQT
Ÿ
/VNCFS
PG
5VSOT

.BY
NPOJUPSFE
"NQT
FH


"
Ÿ

5VSOT


"NQT
NBY
JO
NPOJUPSFE
DPOEVDUPS
t
'BJMVSF
UP
GPMMPX
UIFTF
JOTUSVDUJPOT
DBO
SFTVMU
JO
PWFSIFBUJOH

BOE
QFSNBOFOU
FRVJQNFOU
EBNBHF
Controller must be
programmed to account for the
extra turns. e.g., if three turns
pass through the sensor (as
shown) the normal controller
reading must be divided by 3.
< 3 A (Sensor Min.)
troublEshooting
Problem Solution
No Reading at Controller • Check polarity of sensor output connections.
• Check for output voltage at sensor.
• Check for amperage in the monitored conductor.
• Assure that sensor core mating surfaces are clean and
that the core clamp is completely closed.
scaling
Set range switch. 1.
120
60
30
Amperage Range
Selector Switch
120
60
30
Scale controller 2.
software to match
selected output.
SENSED AMPS
Selected Range*
0 VDC
0A
5 VDC
SENSOR OUTPUT
*Factory calibrated ranges selected
with the amperage range switch