CSNZ-904 Honeywell, CSNZ-904 Datasheet

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CSNZ-904

Manufacturer Part Number
CSNZ-904
Description
Manufacturer
Honeywell
Datasheet

Specifications of CSNZ-904

Lead Free Status / RoHS Status
Compliant
CSNZ-904 Series
Split-Core Adjustable Set
Point Digital Output Variable
Frequency Drive Current
Sensors
DESCRIPTION
The CSNZ-904 Series microprocessor-based current
sensors provide a unique solution for monitoring the
status of motors controlled by variable frequency drives
(VFD). The CSNZ-904 Series stores the sensed
amperage values for normal operation at various
frequency ranges in non-volatile memory. This
information allows the sensor to distinguish between a
reduced amperage draw due to normal changes in the
frequency and abnormal amperage drop due to belt loss,
coupling shear or other mechanical failures.
• Amperage range of 3.5 A to 135 A, 20 Hz to 75 Hz
• 0.1 A at 30 Vac/dc output rating
• Self-adjusting trip set point
• 100% solid state
• Microprocessor-based
• Normal and alarm status LEDs
• Self-gripping mounting teeth
• Split-core design
• cULus approved
FEATURES
The self-adjusting trip set point is factory programmed to
detect belt loss in undercurrent conditions. The sensor
monitors both frequency and amperage, and
automatically compensates for change effects
associated with VFDs. There is no need to calibrate the
CSNZ-904 Series in live starter enclosures.
Status LEDs indicate normal and alarm conditions. The
split-core allows fast retrofit installation.
A DIN rail clip set (available separately) increases
mounting flexibility.
NOTE: The CSNZ-904 Series is not intended for use in
staged pump or variable inlet vane applications.
• Monitoring positive status on motors controlled by
• Replacement for pressure switches
POTENTIAL APPLICATIONS
VFDs

Related parts for CSNZ-904

CSNZ-904 Summary of contents

Page 1

... Status LEDs indicate normal and alarm conditions. The split-core allows fast retrofit installation. A DIN rail clip set (available separately) increases mounting flexibility. NOTE: The CSNZ-904 Series is not intended for use in staged pump or variable inlet vane applications. POTENTIAL APPLICATIONS • Monitoring positive status on motors controlled by VFDs • ...

Page 2

... CSNZ-904 Series SPECIFICATIONS Characteristic Amperage range Sensor power Status output rating Output Off state leakage Insulation class Frequency range Temperature range Humidity range Off delay Trip setpoint LED status* Dimensions ( Sensor hole size ( Approvals *Do not use the LED indicators for evidence of applied voltage. ...

Page 3

... Split-Core Adjustable Set Point Digital Output Variable Frequency BELT LOSS/COUPLING SHEAR DETECTION The CSNZ-904 Series detects when drive belts slip, break or pump couplings shear by sensing a drop in current. A typical HVAC motor that loses its load has a current reduction draw 50%. APPLICATION/WIRING EXAMPLE ORDER GUIDE ...

Page 4

... In no event shall Honeywell be liable for consequential, special, or indirect damages. While we provide application assistance personally, through our literature and the Honeywell web site the customer to determine the suitability of the product in the application. Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this printing ...

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