Current Monitoring | Current Switches: Auto Calibration, Narrow Limit Process Control
H10F
Automatically Learns at Initial Power-Up
H10F
Maximize Reliability
The Hawkeye TruStat H10F is a microprocessor based, self-learning, selfcalibrating current switch. It provides calibration-free status, for both
under-current and over-current conditions. At initial power-up,
the H10F automatically learns the average current on the line with
no action required by the installer. Once a current is learned, the switch
monitors for changes in current greater than ±20% of the learned load.
TM
Adjustable trip
point
Automatic adjustable trip point
(3.5 to 100 A)…precise control of
current trip point
100% solid state
No moving parts to fail
Microcontroller
based learning
technology
Automatically learns load upon
initial power-up…minimizes
calibration labor
APPLICATIONS
• Monitoring fans, pumps,
motors, and other electrical
loads for proper operation
• Detecting belt loss and motor
failure…ideal for fan and pump
status
Reduced costs
Automatic calibration…reduced
errors and installation costs
Flexibility
Removable mounting bracket for
installation flexibility
• Verifying lighting circuit loads
• Monitoring critical motors
(compressor, fuel, etc.)
• Monitoring industrial process
equipment status (OEM)
Sensor Power
Isolation
Temperature Range -15 to 60 °C (5 to 140 °F)
Humidity Range 10 to 90% RH non-condensing
Frequency Range 50/60 Hz
Trip Point Calibration Learn Period 30 sec. learn period
Normal-to-Alarm Status Output Delay 1 second max.
Alarm-to-Normal Status Output Delay 30 sec. nominal
Status Output
Terminal Block Wire Size 24 to 14 AWG (0.2 to 2.1 mm2)
Terminal Block Torque 3.5 to 4.4 in-lbs (0.4 to 0.5 N-m)
WARRANTY
Limited Warranty 5 years
AGENCY APPROVALS
Agency Approvals
Induced from monitored
conductor
600 Vac RMS (UL); 300 Vac RMS
1
(CE
)
2
±20% of learned current to trigger
alarm; ±15% of learned current to
release alarm (see graph)
UL 508 open device listing;
CE: EN61010-1, CAT III,
Pollution Degree 2,
basic insulation
PRODUCT FUNCTIONS
ALARM RESET
5% Typical
Upper Alarm
Trip Limit +20%
NOMINAL
LEARNED
CURRENT
NORMAL
ØAAC
POWER
ON
1 . The CE mark indicates RoHS2 compliance. Please refer to the CE Declaration of
Conformity for additional details.
2. If current switch experiences a momentary loss of power, 30 second delay may or may
not apply.
Note: Do not use the LED status indicators as evidence of applied voltage.
LEARN
(MODE)
30 SEC
(CURRENT
MONITOR
MODE)
1 SEC. DELAY 30 SEC. DELAY
ALARM
(MODE)
NORMAL
(CURRENT
MONITOR MODE)
POWER LOSS
ALARM (MODE)
ØAAC
Normal
Current
Lower Alarm
Trip Limit -20%
TM
HQ0001757.F 0117
Current Monitoring | H10FCurrent Monitoring | Current Switches: Auto Calibration, Narrow Limit Process Control
DIMENSIONAL DRAWING MONITORING FAN/PUMP MOTORS FOR
POSITIVE PROOF OF FLOW (H11D)
Wiring Diagram
Removable Mounting Bracket
0.6"
(16 mm)
2.1"
(54 mm)
0.4” x 0.2”
(10 mm x 5 mm)
Slot (2x)
* Terminal block may extend up to 1/8” over the height dimensions shown.
0.5"
(13 mm)
2.1"
(54 mm)
2.9"
(74 mm)
0.7"
(18 mm)
3.5"
(89 mm)
1.2"
(31 mm)
Self-gripping Iris
2.5" *
(64 mm)
1.0"
(26 mm)
HOW IT WORKS
The compact split-core H10F current switch monitors a learned load current
to detect power loss and electrical overload. The push-button initiated
LEARN MODE allows resetting of the monitored current when the load
changes due to system alterations.
Learn Mode
• Unit automatically enters LEARN MODE upon initial power-up
• Auto-calibration is achieved by averaging the load current for
30 seconds
• During this stage, green and red LEDs alternately blink on/o
• STATUS OUTPUT contacts are closed
• LEARN MODE may be initiated manually
Normal Mode
• Initiated after the 30-second learning period, or immediately upon
power-up if sensor has already learned a load
• The red LED is o, and the green LED is blinking
• STATUS OUTPUT contacts are closed
CONTACTOR
Insulated
conductor
only
Motor
DDC CONTROLLER
Digital
Input
Pump or Fan
Alarm Mode
• The ALARM state signals low current, high current, or power loss
conditions
• Initiated within 1 second when any load current excursion exceeds a
nominal ±20%
• ALARM will persist until the load current returns to within a nominal
±15% of the learned current value, or when power is restored to normal
• The 5% ALARM-to-NORMAL MODE reentry margin prevents alarm
signal oscillations. This feature is enhanced by a 30 second delay,
to insure true nominal load current conditions when returning to
NORMAL MODE from an ALARM state
• The green LED is o, and the red LED blinks
• STATUS OUTPUT contacts are open
OPERATING MODES
STAT U S L E DS
STATUS OUTPUT
GREEN RED
LEARN (30 secs) Alternating Blink On/Off Contacts Closed
NORMAL Blink Off Contacts Closed
ALARM* Off Blink Contacts Open
* 1 sec maximum after detection.
ORDERING INFORMATION
MODEL
H10F 3.5 to 100 A
1. For best performance, monitor 5 A or more current. At currents less than 5A, these ranges are approximate. 2. Listed for use on 75°C insulated conductors.
HQ0001757.F 0117
AMPE RAG E
RANGE
STATUS OUTPUT
N.O.1.0 A @ 30 Vac/
dc
NOMINAL TRIP POINT
TARGET RANGE
±20% ±15% Split-core •
TM
1
NOMINAL ALARM
RESET RANGE
1
HOUSING
STAT U S
LED
UL CE
2
•
•