H909

H909
INSTALLATION GUIDE
CURRENT MONITORING
TM
H909
TM
909
Split-Core Current Switch, Adjustable Trip Point,
120VAC/DC Output
Installer’s Specifications
Sensor Power
Induced from monitored current
Insulation Class
600VAC RMS (UL)
Frequency Range50/60Hz
Temperature Range-15° to 60°C (5° to 140°F)
Humidity Range
10-90% RH non-condensing
Amperage Range
2.5 - 135A Continuous
Output N.O. [email protected]/DC, not polarity sensitive
Hysteresis
10% of setpoint, typical
Output Resistance - Off-State
>1 MΩ
Terminal Block Maximum Wire Size
14 AWG
Terminal Block Torque (nominal)
4 in-lbs (0.45 N-m)
Agency Approvals
UL 508, IEC 61010-1: 2001 CAT III
The product design provides for basic insulation only.
DANGER
INSTALLATION
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
•
•
•
•
•
Follow safe electrical work practices. See NFPA 70E in the USA, or applicable local codes.
This equipment must only be installed and serviced by qualified electrical personnel.
Read, understand and follow the instructions before installing this product.
Turn off all power supplying equipment before working on or inside the equipment.
Use a properly rated voltage sensing device to confirm power is off.
DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION
• Only install this product on insulated conductors.
Failure to follow these instructions will result in death or serious injury.
1. Locate a mounting surface for the removable mounting bracket that will allow
the monitored conductor to pass through the center window when it is installed
and that will keep the device at least 1/2” from any uninsulated conductors.
Determine cable routing for the output connection, allowing wiring to reach the
mounting location.
2. Drill holes to mount the bracket to the chosen surface using the included screws.
3. Wire the output connections between the sensor and the controller (solid-state
contact).
NOTICE
•
•
•
•
Disconnect and lock out power to the conductor to be monitored.
This product is not intended for life or safety applications.
Do not install this product in hazardous or classified locations.
The installer is responsible for conformance to all applicable codes.
Mount this product inside a suitable fire and electrical enclosure.
WIRING EXAMPLE
4. Snap the sensor over the wire to be monitored and clip the assembly to the
mounting bracket.
5. Calibrate the sensor (see page 2) with the load running normally.
DIMENSIONS
Removable Mounting Bracket
CONTACTOR
1.0”
(25 mm)
CONTROLLER
Insulated Conductor
Digital
Input
1.1”
(26 mm)
Bracket can be mounted
on either side for added
installation flexibility.
0.8”
(21 mm)
3.1”
(79 mm)
Self-gripping
Iris
2.8”
(70 mm)
1.4”
(36 mm)
Ø = 0.3”
(8 mm)
MOTOR
2.5”
(64 mm)
Fan or Pump
Z201495-0C
PAGE 1
3.0”
(76 mm)
©2011 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected]
Use DIN Rail
Mounting clip
(Veris part
number AH01) to
mount on standard DIN rail.
08114
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.
INSTALLATION GUIDE
H909
TM
OPERATION
CALIBRATION
The H909 is a current-sensitive switching device that monitors current (amperage) in
the conductor passing through it. A change in amperage in the monitored conductor
that crosses the switch (setpoint) threshold plus the hysteresis value will cause
the resistance of the FET status output to change state, similar to the action of a
mechanical switch. In this model, the setpoint is adjustable through the action of a
twenty (20) turn potentiometer (see the CALIBRATION section). The status output is
suitable for connection to building controllers or other appropriate data acquisition
equipment operating at up to 120 volts. The H909 requires no external power supply
to generate its output.
Before beginning calibration, establish normal load conditions.
The H909 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
OK!
OK!
A
Then choose either A or B below.
A. To monitor under-current (belt loss, coupling shear, status)
!
STATUS
OK!
OK!
A
Status
Open Setpoint
1. Turn setpoint screw
clockwise until Status OPEN
LED turns ON.
For load currents greater than sensor maximum rating:
Use a 5 Amp (H68xx series) Current Transformer (CT) as shown. This technique can be
combined with wrapping (see below) when added safety is desired for a low current
load on a high current source.
240A
> 135A (sensor max.)
STOP
2. Slowly turn the screw counter‑clockwise until the Status CLOSED LED just
turns ON.
3.Turn the screw an
Setpoint
Status
Setpoint Closed
additional 1/4 turn
counter‑clockwise for
1/4 operational margin.
+
STOP
B. To monitor over-current (mechanical problems, seized impeller)
300A:5A
4A
H68xx-5A CT
STATUS
!
OK!
OK!
A
DANGER: 5A CTs can present hazardous voltages.
Install CTs in accordance with manufacturer's instructions.
Terminate the CT secondary before applying current.
1.Turn setpoint screw
counter‑clockwise until Status
CLOSED LED turns ON.
Status
Setpoint Closed
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
STOP
2. Slowly turn the setpoint screw clockwise until the Status OPEN LED just turns ON.
Status
Open Setpoint
+
e.g. : 100A ÷ 4 Turns = 25 Amps max. in monitored conductor
• Failure to follow these instructions can result in overheating
and permanent equipment damage.
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 center window. This increases the current
measured by the transducer.
Program controller to account
for the extra turns. e.g., if four
turns pass through the sensor
(as shown) divide the normal
controller reading by 4.
Z201495-0C
PAGE 2
< 2.5 A (Sensor Min.)
STOP
Setpoint
1/4
3. Turn the setpoint
screw an additional
1/4 turn clockwise for
operational margin.
TROUBLESHOOTING
Problem
Solution
No Reading at Controller
• Check sensor calibration (see above)
• Check for control voltage at sensor (<120V)
• Check for amperage in monitored conductor (> 2.5A)
• Assure that sensor core mating surfaces are clean and
that the core clamp is completely closed
Setpoint screw has no stops
The setpoint screw has a slip-clutch at both ends of its
travel to avoid damage. Twenty turns CCW will reset
the sensor to be most sensitive. Repeat calibration
above.
Both LEDs are lit
Setpoint screw is too far clockwise. See solution above.
4x
1A
©2011 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected]
08114
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.
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